Texas Instruments AMC7812EVM-PDK User Manual

User's Guide

SBAU177D–September 2010–Revised August 2014

AMC7812EVM-PDK User’s Guide

This user's guide describes the characteristics, operation, and use of the AMC7812 evaluation module (EVM). This user’s guide also discusses the proper setup and configuration of software and hardware and reviews various aspects of program operation. A complete circuit description, schematic diagram, and bill of materials are also included.

Contents

1 Overview...................................................................................................................... 3

2 AMC7812EVM Hardware Setup........................................................................................... 4

3 AMC7812EVM Software Setup ............................................................................................ 7

4 AMC7812EVM Hardware Overview....................................................................................... 9

5 AMC7812EVM Software Overview ...................................................................................... 13

6 AMC7812EVM Documentation........................................................................................... 22

List of Figures

1 AMC7812EVM Hardware Setup........................................................................................... 4

2 AMC7812 Test Board Block Diagram..................................................................................... 4

3 SDM-USB-DIG Platform Block Diagram.................................................................................. 6

4 AMC7812EVM Installer Directory.......................................................................................... 7

5 AMC7812EVM Install Path ................................................................................................. 8

6 Typical Hardware Connections on the AMC7812EVM................................................................ 10

7 Confirmation of SDM-USB-DIG Platform Driver Installation.......................................................... 10

8 AMC7812EVM GUI Location ............................................................................................. 13

9 AMC7812EVM GUI – Power On ......................................................................................... 13

10 Software Reset Button..................................................................................................... 14

11 Low-Level Configuration Page............................................................................................ 14

12 ADC Page................................................................................................................... 15

13 ADC Block Activation Sequence ......................................................................................... 15

14 ADC Channel MUX ........................................................................................................ 15

15 ADC CH0 to CH3 Config.................................................................................................. 15

16 ADC External Ref Value................................................................................................... 16

17 ADC Report Window....................................................................................................... 17

18 DAC Page................................................................................................................... 17

19 Program DAC Registers................................................................................................... 17

20 DAC Gain Button........................................................................................................... 18

21 DAC External Ref Value................................................................................................... 18

22 DAC Clear and Latch Settings............................................................................................ 18

23 DAC Clear Triggers ........................................................................................................ 18

24 ALARMS Page.............................................................................................................. 19

25 Alarm LEDs ................................................................................................................. 19

26 Alarm LEDs Activated ..................................................................................................... 19

27 Alarm Control Registers................................................................................................... 20

28 GPIO + Temp Page........................................................................................................ 20

SBAU177D–September 2010–Revised August 2014 AMC7812EVM-PDK User’s Guide

Submit Documentation Feedback

www.ti.com

29 Temperature Read......................................................................................................... 20

30 Threshold Limit Configuration ............................................................................................ 21

31 Temperature Conversion Rate ........................................................................................... 21

32 GPIO Page.................................................................................................................. 21

33 GPIO Write/Read........................................................................................................... 21

34 AMC7812EVM Schematic (1 of 3)....................................................................................... 22

35 AMC7812EVM Schematic (2 of 3)....................................................................................... 23

36 AMC7812EVM Schematic (3 of 3)....................................................................................... 24

37 AMC7812EVM PCB Components Layout............................................................................... 25

List of Tables

1 Contents of AMC7812EVM Kit............................................................................................. 3

2 Related Documentation..................................................................................................... 3

3 J1 Signal Definition.......................................................................................................... 5

4 Default Jumper Settings .................................................................................................... 9

5 AMC7812EVM Jumper and Shunt Resistor Settings.................................................................. 11

6 AMC7812EVM ADC Signal Connections ............................................................................... 11

7 AMC7812EVM DAC Signal Connections ............................................................................... 12

8 AMC7812EVM GPIO Signal Definition.................................................................................. 12

9 Conversion Rates .......................................................................................................... 16

10 Bill of Materials ............................................................................................................. 26

AMC7812EVM-PDK User’s Guide SBAU177D–September 2010–Revised August 2014

Submit Documentation Feedback

www.ti.com

1 Overview

This EVM features the AMC7812, a highly-integrated, low-power, complete analog monitoring and control solution that includes a 16-channel (12-bit) ADC, 12-channel (12-bit) DAC, eight GPIOs, and two remote/one local temperature sensor channels. The device also features input out-of-range alarms, and configurable I2C-compatible/SPI interface with 5-V/3-V logic.

1.1 AMC7812EVM Kit Contents

Table 1 details the contents of the EVM kit. Contact the Texas Instruments Product Information Center

nearest you if any component is missing. TI highly recommends to check the TI website (www.ti.com) to verify that you have the latest versions of the related software.

Table 1. Contents of AMC7812EVM Kit

AMC7812EVM PCB evaluation board 1

SDM-USB-DIG platform PCB 1

USB extender cable 1

+24-V wall supply 1

1.2 Related Documentation from TI

The following document provides information regarding TI integrated circuits used in the assembly of the AMC7812EVM. This user's guide is available from the TI website, literature number SBAU177. Newer revisions may be available from the TI website at www.ti.com, or call the TI Literature Response Center at (800) 477-8924 or the Product Information Center at (972) 644-5580. When ordering, identify the document by both title and literature number.

Overview

ITEM QUANTITY

Table 2. Related Documentation

Document Literature Number

AMC7812 Product Data Sheet SBAS513

SDM-USB-DIG Platform User’s Guide SBOU136

Microsoft, Windows are registered trademarks of Microsoft Corporation. All other trademarks are the property of their respective owners.

SBAU177D–September 2010–Revised August 2014 AMC7812EVM-PDK User’s Guide

Submit Documentation Feedback

Default:

LDO Regulated

Power

20-Pin

Conn. To

SDM-

USB-DIG

16-CH ADC

Input

8 GPIO

Connection

12-CH DAC

Vout

Optional:

External Power

(Terminal Blocks)

AMC7812

SPI

Power

AMC7812EVM

USB Bus

from

Computer

+24-V Wall Adapter

Optional External Power

20-Pin

Connector

SDM-USB-

DIG

J1 connection or

terminal blocks

Personal

Computer

(PC)

AMC7812EVM Hardware Setup

2 AMC7812EVM Hardware Setup

This section provides the overall system setup for the EVM. A PC runs software that communicates with the SDM-USB-DIG platform, which generates the power and digital signals used to communicate with the EVM board. The EVM includes a +24-V wall supply that provides power to on-board power regulators (LDOs) that regulate the analog and digital supplies. Connectors are also included on the EVM board for optional, external power supplies. Figure 1 displays the system setup for the AMC7812EVM.

Figure 1. AMC7812EVM Hardware Setup

www.ti.com

2.1 Theory of Operation for AMC7812 Hardware

Figure 2 shows a block diagram of the AMC7812EVM test board. The EVM board provides testpoints for

the supplies, internal reference, ground connections, SPI inputs, ADC inputs, and DAC outputs.

Figure 2. AMC7812 Test Board Block Diagram

AMC7812EVM-PDK User’s Guide SBAU177D–September 2010–Revised August 2014

Submit Documentation Feedback

www.ti.com

2.2 Signal Definitions of J1 (20-Pin Male Connector Socket)

The AMC7812EVM includes a 20-pin connector socket used to communicate between the EVM and the SDM-USB-DIG platform. The pin out of the J1 connector is shown in Table 3.

Table 3. J1 Signal Definition

Pin on J1 Signal Description

1 SCL I2C clock signal (SCL) 2 DIG_GPIO2 GPIO – Control output or measure input 3 DIG_GPIO0 GPIO – Control output or measure input 4 DIG_GPIO3 GPIO – Control output or measure input 5 SDA I2C data signal (SDA) 6 DIG_GPIO4 GPIO – Control output or measure input 7 DIG_GPIO1 GPIO – Control output or measure input 8 DIG_GPIO5 GPIO – Control output or measure input 9 MOSI SPI data output (MOSI) 10 DIG_GPIO6 GPIO – Control output or measure input

11 VDUT 12 DIG_GPIO7 GPIO – Control output or measure input

13 SCLK SPI clock signal (SCLK) 14 DIG_GPIO8 GPIO – Control output or measure input 15 GND Power return (GND) 16 DIG_GPIO9 GPIO – Control output or measure input 17 CS SPI chip select signal (/CS) 18 DIG_GPIO10 GPIO – Control output or measure input 19 MISO SPI data input (MISO) 20 DIG_GPIO11 GPIO – Control output or measure input

Switchable DUT power supply: +3.3 V, +5 V, Hi-Z (disconnected). Note: When VDUT is Hi-Z all digital I/O are Hi-Z as well.

AMC7812EVM Hardware Setup

SBAU177D–September 2010–Revised August 2014 AMC7812EVM-PDK User’s Guide

Submit Documentation Feedback

MSP430F5528

Microcontroller

USB Bus

from

Computer

3.3-V

Regulator

+3.3 V

USB

+5.0 V

Level

Translators

Power

Switching

Vdut

(Hi-Z, 3.3 V or 5 V)

Switched Power

I2C SPI

GPIO

Power on

Reset

SDM-USB-DIG

To Test Board

To Computer and Power Supplies

+3.3 V

USB +5.0 V

AMC7812EVM Hardware Setup

2.3 Theory of Operation for SDM-USB-DIG Platform

The SDM-USB-DIG platform is a general-purpose data acquisition system that is used on select TI EVMs. The core component of the platform is the MSP430F5528, an ultra-low power 16-bit MCU. The

microcontroller receives information from the host PC and translates it into I2C, SPI, or other digital I/O patterns. The connected device (in this case, the AMC7812 device) connects to the I/O interface of the platform. During digital I/O transactions, the platform obtains information from the AMC7812 device and sends it to the host PC for interpretation. Figure 3 shows a block diagram of the platform.

www.ti.com

Figure 3. SDM-USB-DIG Platform Block Diagram

AMC7812EVM-PDK User’s Guide SBAU177D–September 2010–Revised August 2014

Submit Documentation Feedback

www.ti.com

3 AMC7812EVM Software Setup

This section provides the procedure for EVM software installation.

3.1 Operating Systems for AMC7812EVM Software

The EVM software was tested on the Microsoft®Windows®XP and Windows 7 operating systems with the United States and European regional settings. The software should also be compatible with other Windows operating systems.

3.2 AMC7812EVM Software Installation

The software is available through the EVM product folder (AMC7812EVM) on the TI website. After the software is downloaded on the PC, navigate to the AMC7812EVM_Installer folder, and run the setup.exe file as shown in Figure 4. When the software is launched, an installation dialog opens and prompts the user to select an installation directory. If left unchanged, the software location defaults to C:\Program Files (x86)\AMC7812EVM (Windows 7), as shown in Figure 5. The software installation automatically copies the required drivers for the SDM-USB-DIG and AMC7812EVM to the PC. After the software is installed, connecting the SDM-USB-DIG to a USB port may launch a driver installation dialog. Choose the Install this driver software anyway option to continue with installation. (Note: On XP machines, choose to have the system automatically find the driver or software.)

AMC7812EVM Software Setup

Figure 4. AMC7812EVM Installer Directory

SBAU177D–September 2010–Revised August 2014 AMC7812EVM-PDK User’s Guide

Submit Documentation Feedback

AMC7812EVM Software Setup

www.ti.com

Figure 5. AMC7812EVM Install Path

AMC7812EVM-PDK User’s Guide SBAU177D–September 2010–Revised August 2014

Submit Documentation Feedback

www.ti.com

4 AMC7812EVM Hardware Overview

The subsequent sections provide detailed information on the EVM hardware and jumper configuration settings. To use the +24-V wall supply, set the AVDDand IOVDDjumper connections to the default configuration listed in Table 4. The table also displays the default configurations of all jumper connections on the AMC7812EVM. Connect the USB extender cable from the SDM-USB-DIG to the PC, and the +24V wall adapter to the J5 terminal.

Table 4. Default Jumper Settings

Jumper Default Position Function

JP1 Shunt on 1-2

JP2 Shunt on 1-2

JP3 Shunt on 1-2

JP4 Shunt on 1-2

JP5 Shunt on 1-2

JP6 Not installed

J7 Default OPA to GND for protection

Shunt on 5-6 Shunt on 7-8

AMC7812EVM Hardware Overview

Selecting bus

• 1~2: (Default) SPI

• 2~3: (I2C)

Selecting DAC reference

• 1~2: (REF-OUT to REF-DAC)

• 3~4: (DACREF to REF-DAC)

• 5~6: (2.5 V REF to REF-DAC)

Selecting AVDD/DVDDvoltage

• 1~2: Onboard 5-V supply

• 2~3: External supply

Selecting AVCCvoltage

• 1~2: (On board 14-V supply)

• 2~3: (External supply)

Selecting IOVDDvoltage

• 1~2: (On board VDUT)

• 2~3: (External supply)

• Installed: Onboard temp sensors

• Not installed: External temperature sensors

4.1 Electrostatic Discharge (ESD) Caution

Many of the components on the AMC7812EVM are susceptible to damage by ESD. Observe proper ESD handling precautions when unpacking and handling the EVM, including the use of a grounded wrist strap at an approved ESD workstation.

4.2 Connecting the Hardware

To connect the SDM-USB-DIG to the EVM board, align and firmly connect the female and male ends of the 20-pin connectors (see Figure 6). Verify the connection is snug, as loose connections may cause intermittent operation.

SBAU177D–September 2010–Revised August 2014 AMC7812EVM-PDK User’s Guide

Submit Documentation Feedback

AMC7812EVM Hardware Overview

Figure 6. Typical Hardware Connections on the AMC7812EVM

www.ti.com

4.3 Connecting the USB Cable to the SDM-USB-DIG

Figure 7 shows the typical response when connecting the SDM-USB-DIG platform to a USB port of a PC

for the first time. The PC usually responds with a Found New Hardware, USB Device popup dialog window. The popup window then changes to Found New Hardware, Virtual COM Port (CDC). This popup indicates that the device is ready for use. The CDC driver is used for communication between the SDMUSB-DIG and PC.

Figure 7. Confirmation of SDM-USB-DIG Platform Driver Installation

AMC7812EVM-PDK User’s Guide SBAU177D–September 2010–Revised August 2014

Submit Documentation Feedback

www.ti.com

4.4 AMC7812EVM Power Configurations

This section describes the various power configurations that can be used by the EVM. The AMC7812EVM provides onboard power conditioning to convert the 24-V supply into a 14-V, 5-V, and

3.3-V supply. Jumpers JP3 and JP5 allow the AVDDand IOVDDinputs to be configured to use these onboard supplies, or external supplies through the J6 terminal block. The AVCCinput is configured to use the onboard regulated supplies, but can be connected externally by populating the shunt resistors as shown in Table 5.

Table 5. AMC7812EVM Jumper and Shunt Resistor Settings

Jumper Default Position Function

JP3 Shunt on 1-2

JP4 Shunt on 1-2

JP5 Shunt on 1-2

R62, R63

R65, R66, R67 R66 - Not populated

R69, R70, R71 R70 - Not populated

R62 - 0-Ω shunt R63 - Not populated

R65 - 0-Ω shunt R67 - Not populated

R69 - 0-Ω shunt R71 - Not populated

AMC7812EVM Hardware Overview

Selecting AVDD/DVDDvoltage

• 1~2: Onboard 5-V supply

• 2~3: External supply

Selecting AVCC voltage

• 1~2: (Onboard 14-V supply)

• 2~3: (External supply)

Selecting IOVDDvoltage

• 1~2: (Onboard VDUT)

• 2~3: External supply

• (R62) +5-V LDO supply (default)

• (R63) +3.3-V LDO supply

• (R65) +14-V LDO supply (default)

• (R66) +5-V LDO supply

• (R67) +3.3-V LDO supply

• (R69) SDM-USB-DIG supply (default)

• (R70) +5-V LDO supply

• (R71) +3.3-V LDO supply

Additionally, IOVDDis supplied by the SDM-USB-DIG but can be externally sourced by setting the JP5 jumper, and connecting the external source to the J6 terminal block.

4.5 ADC Signal Pins

The AMC7812 device contains 16 analog inputs, 12 of which are single-ended (ADC4 through ADC15) and have an input range of 0 to 5 V. The other four inputs (ADC0 through ADC3) can be configured as four single-ended inputs for two fully differential channels, depending on the setup of the ADC channel registers. These signal pins are connected to the J2, J3, and J7 connectors, which are described in

Table 6.

Table 6. AMC7812EVM ADC Signal Connections

Name Connector Description

ADC0 J7-1 ADC channel 0 input ADC1 J7-3 ADC channel 1 input

(1)

ADC2 ADC3 ADC4 J2-4 ADC channel 4 input ADC5 J2-6 ADC channel 5 input ADC6 J2-8 ADC channel 6 input

(1)

J7-5 ADC channel 2 input

(1)

J7-7 ADC channel 3 input

The AMC7812EVM includes two OPA2320 devices, which are configured to buffer the ADC2/ADC3 inputs. By default, the two inputs are connected to ground; this is accomplished by using the J7 shunts.

Table 4 shows the default configuration for the shunts. To use the

channels, remove the shunts and apply the desired voltage input to ADC2 or ADC3.

SBAU177D–September 2010–Revised August 2014 AMC7812EVM-PDK User’s Guide

Submit Documentation Feedback

AMC7812EVM Hardware Overview

Name Connector Description

ADC7 J2-10 ADC channel 7 input ADC8 J2-12 ADC channel 8 input ADC9 J2-14 ADC channel 9 input ADC10 J3-4 ADC channel 10 input ADC11 J3-6 ADC channel 11 input ADC12 J3-8 ADC channel 12 input ADC13 J3-10 ADC channel 13 input ADC14 J3-12 ADC channel 14 input ADC15 J3-14 ADC channel 15 input

4.6 DAC Signal Pins

The 12 DAC voltage outputs of the AMC7812 device are accessible through the J2 and J3 connectors, as shown in Table 4. The DAC voltage ranges are configurable through software to either 5 or 12.5 V.

www.ti.com

Table 6. AMC7812EVM ADC Signal

Connections (continued)

Table 7. AMC7812EVM DAC Signal Connections

Name Connector Description

DACC0 J2-3 DAC-C0 output DACC1 J2-5 DAC-C1 output DACD2 J2-7 DAC-D2 output DACD3 J2-9 DAC-D3 output DACD4 J2-11 DAC-D4 output DACD5 J2-13 DAC-D5 output DACB6 J3-3 DAC-B6 output DACB7 J3-5 DAC-B7 output DACA8 J3-7 DAC-A8 output

DACA9 J3-9 DAC-A9 output DACA10 J3-11 DAC-A10 output DACA11 J3-13 DAC-A11 output

4.7 GPIO Signal Pins

The four GPIO signals on the EVM can be measured on the J4 header. Table 8 provides a signal description of the J4 header.

Name Connector Description

GPIO0 J4-4 General-purpose I/O (GPIO0) GPIO1 J4-3 General-purpose I/O (GPIO1) GPIO2 J4-2 General-purpose I/O (GPIO2) GPIO3 J4-1 General-purpose I/O (GPIO3)

(1)

The remote sensor channels, D1+/D1– and D2+/D2–, can be configured as GPIO, if remote temperature sensors are not needed. Use a shunt to connect JP6 to remove the connection to the onboard remote temperature sensors.

AMC7812EVM-PDK User’s Guide SBAU177D–September 2010–Revised August 2014

Table 8. AMC7812EVM GPIO Signal Definition

(1)

Submit Documentation Feedback

www.ti.com

5 AMC7812EVM Software Overview

This section discusses how to use the AMC7812EVM software.

5.1 Starting the AMC7812EVM Software

After the hardware connections are established and jumper settings configured, launch the software located in the AMC7812EVM folder of the Start All Programs menu, and select the AMC7812EVM icon.

Figure 8. AMC7812EVM GUI Location

If the SDM-USB-DIG is properly connected to the AMC7812EVM, the GUI should automatically power on the system and display CONNECTED: Power On in the upper right area of the GUI (see Figure 9).

AMC7812EVM Software Overview

Figure 9. AMC7812EVM GUI – Power On

If the SDM-USB-DIG has a faulty connection, or is not connected at all, the GUI launches in simulation mode. In simulation mode, NOT CONNECTED: Simulating is displayed in the top-right area of the GUI. If this text appears while the SDM-USB-DIG device is connected, then unplug the SDM-USB-DIG and close the GUI. Reconnect the SDM-USB-DIG, and ensure that the connectors are correctly aligned. After doing those steps, verify the USB extender cable is properly connected to both the SDM-USB-DIG and PC, and relaunch the GUI. This connection issue can also occur if the CDC driver is installed incorrectly. The AMC7812EVM software may need to be reinstalled.

5.2 AMC7812EVM Software Features

The following subsections describe the functionality of each page of the AMC7812EVM GUI.

5.2.1 Software Reset

The AMC7812 Software Reset button, shown in Figure 10, resets the AMC7812 device and resets all registers to their default settings.

SBAU177D–September 2010–Revised August 2014 AMC7812EVM-PDK User’s Guide

Submit Documentation Feedback

AMC7812EVM Software Overview

Figure 10. Software Reset Button

5.2.2 AMC7812EVM Low-Level Configuration Page

The AMC7812EVM features a register map page that allows access to low-level communication by directly writing to and reading from the AMC7812 registers. Selecting a register on the Register Map list presents a description of the values in that register and also displays information such as the register’s address, default value, size, and current value. The register values can be modified through the Hex Write Register field, or set through Boolean checkboxes in the Register Data column, as displayed in Figure 11.

www.ti.com

This low-level configuration page also provides the option to save the register map settings as a configuration file, which is done by pressing the Save Config button. Additionally, the configuration files can be accessed through the Load Config button.

5.2.3 AMC7812EVM ADC Page

This page provides insight into the functionality of the AMC7812’s 16-channel 12-bit ADC. The ADC block can be configured as 16 single-ended inputs (ADC0 to ADC15) or 2 differential inputs (ADC0 to ADC3) plus 12 single-ended (ADC4 to ADC15). The analog input range for the device can be selected as 0 V to Vref (2.5 V) or 0 V to 2 × Vref (5 V). Figure 12 displays the ADC Page.

AMC7812EVM-PDK User’s Guide SBAU177D–September 2010–Revised August 2014

Figure 11. Low-Level Configuration Page

Submit Documentation Feedback

www.ti.com

AMC7812EVM Software Overview

Figure 12. ADC Page

To completely activate the ADC block, the Enable Reference Block must be enabled, along with the Enable Internal Reference Buffer and Power ADC Block. Figure 13 shows this sequence.

Figure 13. ADC Block Activation Sequence

After the device is configured, individual channels can be enabled by selecting their respective ADC MUX button, as shown in Figure 14.

Figure 14. ADC Channel MUX

CH0 to CH3 can be selected by using the dropdown menu and choosing various options such as differential mode, single-ended mode, and so forth, as shown in Figure 15.

Figure 15. ADC CH0 to CH3 Config

SBAU177D–September 2010–Revised August 2014 AMC7812EVM-PDK User’s Guide

Submit Documentation Feedback

AMC7812EVM Software Overview

The input range can be adjusted by clicking the button next to each ADC channel on the right-hand side of the page. Conversions can be triggered by pressing the Start Conv button or can be automatically triggered before every read by enabling the Auto-Trigger check box. The ADC data registers, displayed on the right side of the GUI, are updated with the converted results when the Read ADC button is pressed.

NOTE: The AMC7812EVM includes two OPA2320 devices, which are configured to buffer the

ADC2/ADC3 inputs. By default, the two inputs are connected to ground, this is accomplished by using the J7 shunts. The default configuration for the shunts are located in Table 4. To use the channels, remove the shunts and apply the desired voltage input to ADC2 or ADC3.

Most of the controls listed within the ADC image are used to setup the ADC configuration register. These include the conversion rate and conversion mode parameters, which are selectable through their respective dropdown list. The selectable conversion rates are listed in Table 9.

www.ti.com

Table 9. Conversion Rates

Conversion Rate

00 500 kSPS 01 250 kSPS 10 125 kSPS 11 62.5 kSPS

Throughput (ADC0–ADC11)

(Single-Channel Auto Mode)

The conversion mode can be either Auto or Direct mode. In Direct Mode, the analog inputs, specified in the ADC channel registers, are converted sequentially one time. In Auto Mode, the analog inputs are converted sequentially and repeatedly. After a conversion is completed, the ADC multiplexer returns to the first channel and repeats the process.

The ADCs also have an option to use an External or Internal reference. Select this option by using a dropdown menu, then choosing the External or Internal option. When the Internal option is chosen, the

ADC External Ref Value box is grayed out. But when an External reference option is selected, the ADC External Ref Value box becomes active and the value of external reference voltage can be entered in the

box as shown in Figure 16.

Figure 16. ADC External Ref Value

The ADC Report window displays the decimal value for each activated ADC channel. If the Auto Read button is pressed, the graph periodically updates with the new ADC value. To obtain new data, setup the device for either Auto mode or Direct mode. If in Direct mode, verify that the Trigger ADCs before read? button is enabled. To stop the periodic updates press the Auto Read button once again. Figure 17 shows the ADC Report window. Additionally, the Clear ADC Data button clears the memory of the chart.

AMC7812EVM-PDK User’s Guide SBAU177D–September 2010–Revised August 2014

Submit Documentation Feedback

www.ti.com

5.2.4 AMC7812EVM DAC Page

The DAC page gives the user an interface to observe and control the different data registers, modes, and configurations available for each individual DAC channel. The AMC7812 contains 12 DACs with 12 bits of resolution. The DACs can be used with an Internal (default) or External reference. To fully activate the DAC block, set the Enable Reference Block. To set the DAC channels individually, select their respective checkbox in the Power DAC column (see Figure 18).

AMC7812EVM Software Overview

Figure 17. ADC Report Window

Figure 18. DAC Page

The DAC page also displays two input fields under the Program DAC column, shown in Figure 19.

Figure 19. Program DAC Registers

SBAU177D–September 2010–Revised August 2014 AMC7812EVM-PDK User’s Guide

Submit Documentation Feedback

AMC7812EVM Software Overview

Either one of these windows can be programmed with the desired DAC output voltage or hexadecimal value. The default range upon startup is the 0 to 5 V (0 V to 2x Vref) range. The range can be changed to 0 to 12.5 V (5x Vref) by clicking the 2x Vref button, Figure 20. The range button now displays 5x Vref and the program DAC value is also updated.

The DAC page also has an option to use an External or Internal reference. Select this option by using a dropdown menu, then choosing External or Internal option. When the Internal option is chosen, the DAC

External Ref Value box is grayed out. But when an External reference option is selected, the DAC External Ref Value box becomes active and the value of the external reference voltage can be entered in

the box as shown in Figure 21.

www.ti.com

Figure 20. DAC Gain Button

Figure 21. DAC External Ref Value

To the right of the Program DAC field are additional options that allow the user to configure each DAC for different events, as shown in Figure 22. Starting from left to right, the CLR EN0/ CLR EN1 checkbox allows the user to put the corresponding DAC in a clear state when the DAC-CLR-0 or DAC-CLR-1 pin goes low. The SW CLR checkbox forces the DAC into a clear state through software. Auto CLR forces the DAC to clear based on the DAC Clear Triggers located in the bottom of the page, Figure 23. Last is the

SLDA checkbox, which can be enabled for synchronous load; the registers are updated by pressing the Update DAC Latch button.

Figure 22. DAC Clear and Latch Settings

5.2.5 AMC7812EVM ALARMS Page

The ALARMS page allows the user to access or observe the AM7812 registers and register bits related to common programmable settings and alarms of the AMC7812. Figure 24 displays the ALARMS page of the AMC7812EVM.

Figure 23. DAC Clear Triggers

AMC7812EVM-PDK User’s Guide SBAU177D–September 2010–Revised August 2014

Submit Documentation Feedback

www.ti.com

The ALARMS page displays the name of each alarm, and provides information such as the AMC7812

Local Temperature, D1 Temperature, D2 Temperature status, and the Analog Input (CH0-CH3) Out of Range alarms. Figure 25 shows these indicators.

AMC7812EVM Software Overview

Figure 24. ALARMS Page

Figure 25. Alarm LEDs

The false alarm protection setting for each alarm is also displayed; these settings allow the user to choose how many consecutive triggers must occur before the alarm is activated. Additionally, the bottom left of the GUI includes a checkbox function for enabling or disabling the alarm pin function and alarm latch settings.

Pressing the Read Alarm Status button enables the capture of the current state of the AMC7812, and if an alarm has occurred, it activates the corresponding LED, as seen in Figure 26.

Figure 26. Alarm LEDs Activated

To associate the ALARM pin with an alarm event, select the appropriate event. Figure 27 displays these checkboxes.

SBAU177D–September 2010–Revised August 2014 AMC7812EVM-PDK User’s Guide

Submit Documentation Feedback

AMC7812EVM Software Overview

Figure 27. Alarm Control Registers

5.2.6 AMC7812EVM GPIO + Temp Page

The AMC7812EVM contains one internal local temperature sensor and two temperature measurement ports, D1 and D2, that are used for sensing temperatures from external remote locations. Figure 28 shows the GPIO + Temp page.

www.ti.com

Figure 28. GPIO + Temp Page

The GPIO + Temp page allows the user to access or observe the AMC7812 registers related to the three temperature monitoring functions. Pressing the READ TEMP button enables a temperature conversion and updates the temperature value for all temperature functions in Celsius (°C) and hexadecimal. Additionally, these functions can be modified by adjusting the corresponding Hysteresis and nFactor values.

Figure 29. Temperature Read

The ALARMS page also ties into the functionality of the GPIO + Temp page, as this page determines the low and high threshold for all temperature configurations. Figure 30 shows where to program the limits by entering the desired Celsius values into the low or high limit fields.

AMC7812EVM-PDK User’s Guide SBAU177D–September 2010–Revised August 2014

Submit Documentation Feedback

www.ti.com

The AMC7812 implements a technology to automatically cancel out the effect of series resistance caused by the length of wire attached to any external remote temperature sensor. The resistance cancellation can be disabled or enabled when the RC bit is cleared or set.

The conversion rate of the temperature data can also be set by adjusting the Temp-Conversion Rate dropdown, displayed in Figure 31.

The GPIO + Temp page also features four (GPIO0 through GPIO3) general-purpose I/Os of the AMC7812 device as shown in Figure 32.

AMC7812EVM Software Overview

Figure 30. Threshold Limit Configuration

Figure 31. Temperature Conversion Rate

Figure 32. GPIO Page

Use the GPIO Block section of the GPIO tab, as shown in Figure 33, to set the various GPIO functions. The dropdown menu defaults to general-purpose I/O. To perform a write or read, set the W/R Function pulldown to either Write or Read. The W/R value enables the user to input or observe the Boolean value of the GPIO register. Press the Generate Write/Read button to write to or read from the GPIO pin.

Figure 33. GPIO Write/Read

SBAU177D–September 2010–Revised August 2014 AMC7812EVM-PDK User’s Guide

Submit Documentation Feedback

SCL

DIG_GPIO0

SDA DIG_GPIO1 MOSI

VDUT

DIG_GPIO6

DIG_GPIO2 DIG_GPIO3 DIG_GPIO4 DIG_GPIO5

SCLK

MISO

0R42

TP1 TP2

AGND GND

MOSI/SDA SCLK/SCL CS/A0 MISO/A1

DIG_GPIO6

1B1

1B2

2B1

2B2

3B2

GND

3A93B1

4B2

4B1

VCC

TS5N412PW

R31

R32

R33

R34

R35

R36

R37

R38

R39

R40

R41

R43

R20

R21

R22

R23

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16

1 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16

AGND

0R25

R26

R12

R13

R14

R15

R16

R19

DACREF

AMC D2+

AMC D1+AMC D1-

AMC D2-

DIG_GPIO3 DIG_GPIO4 DIG_GPIO2 DIG_GPIO5 DIG_GPIO1

AGND

GND

AVCC

AGND

AVDD/DVDD

GND

IOVDD

ADC0 ADC1 ADC2 ADC3

AMC D1+

AMC D1-

AMC D2+

AMC D2-

AGND

4.7μF

ADCREF

20.0k

R27

20.0k

R28

20.0k

R29

20.0k

R30

IOVDD

AMC GPIO0 AMC GPIO1 AMC GPIO2 AMC GPIO3

20.0k

R11 20.0k

R10 20.0k

R9 20.0k

R8 20.0k

IOVDD

R40

GNDGND

GND

IOVDD

R18

GND

SDA

SCL

DIG_GPIO6

SCLK/SCL

MOSI/SDA

CS/A0

MISO/A1

IOVDD

DACREF SEL

2.5V REF

DIG_GPIO0

1 2 3 4 5 6

JP2

SCLK

MOSI

MISO

SPI / I2C MUXSDMini Dig Connector

1 3 56

7 910

12 11 14 13 16 15 18 17 20 19

0.1μF

0.1μFC50.1μF

0.1μF

GND

IOVDD

R6 NI

R24

C14NIC13NIC12NIC11NIC10NIC9

C15NIC16NIC17NIC18NIC19NIC20

C32NIC31NIC30NIC29NIC28NIC27NIC26NIC25NIC24NIC23NIC22NIC21

SDMini Dig connector

RESET

DAV

CNVT

SDI/SDA

SCLK/SCL

DGND

IOVDD

DVDD

CS/A0

SDO/A1

SPI/I2C

GPIO-0

GPIO-1

GPIO-2

GPIO-3

DAC-CLR-0

DAC5-OUT

DAC4-OUT

DAC3-OUT

AGND421AGND3

AVCC2

DAC2-OUT

DAC1-OUT

DAC0-OUT

D2-/GPIO-6

D2+/GPIO-7

D1-/GPIO-4

D1+/GPIO-5

ADC-REF-IN/CMP

ADC-GND

CH0

CH1

CH2

CH3

CH4

CH5

CH6

CH7

CH8

CH9

CH10

CH11

CH12

CH13

CH14

CH15

AVDD149AVDD2

DAC6-OUT

DAC7-OUT

DAC8-OUT

AGND154AGND2

AVCC1

REF-OUT

REF-DAC

DAC9-OUT

DAC10-OUT

DAC11-OUT

ALARM

DAC-CLR-1

DGND264PAD

AMC7812SRGC

AGND

20.0k

TP6 TP7 TP8 TP9

GND

IOVDD

0.01μF

C64

0.1μF

C65

GND

JP1

20.0k

R17

AMC7812EVM Documentation

6 AMC7812EVM Documentation

This section contains the schematic diagrams and complete bill of materials for the AMC7812EVM. Documentation information for the SDM-USBDIG platform can be found in the SDM-USB-DIG Platform User’s Guide, SBOU136, available at the TI website at www.ti.com.

6.1 AMC7812EVM Board Schematic

Figure 34 through Figure 36 show the schematics for this EVM.

www.ti.com

Figure 34. AMC7812EVM Schematic (1 of 3)

Submit Documentation Feedback

AMC7812EVM-PDK User’s Guide SBAU177D–September 2010–Revised August 2014

NO1

COM1

NO2

COM2

IN2

IN3

GND

NO3

COM3

COM410NO4

IN4

IN1

V+

TS12A44514PW

V+ V-

U8A OPA2320AIDGK

V+ V-

U8B OPA2320AIDGK

MMBT3904

MMBT3906

12 34 56 78 910 1112

2700pF

C63

2700pF

C60

20.0k

R76

ADCREF

0R79

R74

AVDD/DVDD

AGND

17.4

R77

17.4

R80

AGND

0.1μF

C58

AGND

0R72

R73

ADC3

ADC2

ADC1

ADC0

IOVDD

GND

AMC D2AMC D2+

AMC D1AMC D1+

1 2

JP6

GND

DIODE SELECT

DACREF

Onboard Temperature Diode Selection

Jumper Table:

- JP6 (DIODE SELECT): Remote temperature diode selection. Installed shunt selects external temperature diodes connected to J2-1,2and J3-1,2 Uninstalled shunt selects onboard temperature diodes Q1 and Q2

Onboard ADC Filter and Buffer

0.1μFC54

GND

Note: If onboard buffers are not used,

jumpers should be installed

on J7-5,6 and J7-7,8.

AGND

R75

R78

C53 NI

C55 NI C56

C57

C62 NI

AGND

270pF

C59

270pF

C61

www.ti.com

AMC7812EVM Documentation

Figure 35. AMC7812EVM Schematic (2 of 3)

SBAU177D–September 2010–Revised August 2014 AMC7812EVM-PDK User’s Guide

Submit Documentation Feedback

22μF

C35

4.7μF

C33

4.7μF

C34

5.1V

MMSZ4689-V

49.9k

R44

24.9k

R49

13.7k

R50

178kR51

165k

R48

174k

R45

C42 NI

R54 NI

GND

GNDGND

AGND

DNC

GND_PT

VOUT

PGND

DNC

GND_PT

PGND

VIN

INH/UVLO

SS/TR

STSEL

RT/CLK

PWRGD

VADJ

LMZ35003RKG

GND

OUT

SENSE

6P4V2

6P4V1

3P2V

GND

1P6V

0P8V

0P4V

0P2V

0P1V

OUT

PAD

TPS7A4700RGW

47μF

C36

47μF

C37

R53 NI R55 NI

R56 R57 NI R58 NI

R59 R60 NI R61 NI

10μF

C38

1 Fμ

C39

R47

1 Fμ

C43

10μF

C41

GND

47μF

C40

GND

GNDGND

300

R46

USEWALL WART T1094-P5P-ND19-30V

JP3

GND

JP4

GND

VDUT

JP5

GND

10μF

C46

10μF

C47

10μF

C52

R52 NI

10μF

C48

10μF

C51

0.1μF

C49

1 Fμ

C50

GND

0.47

R68

GND

2.5V REF

DNC

VIN

TEMP

GND

TRIM/NR

VOUT

DNC

REF5025IDGK

IN3OUT

GND

TAB

LM1086CS-3.3

GND

GND GND

10μF

C45

10μF

C44

3.3V

GND

120

R64

R69

TP5

IOVDD

TP4

AVCC

0R65

0R62

TP3

AVDD/DVDD

1 2 3

ED555/4DS

GND

EXT POWER

+5V

+3.3V

+14V

VDUT

AVCC

IOVDD

AVDD/DVDD

Onboard VREF

Power Selection

Supply Regulation

Jumper Table:

- JP3 (AVDD/DVDD): Onboard / external AVDD/DVDD supply select. 1-2 selects onboard supply (default +5V) 2-3 selects external supply (pin J6-1)

- JP4 (AVCC): Onboard / external AVCC supply select. 1-2 selects onboard supply (default +14V) 2-3 selects external supply (pin J6-2)

- JP5 (IOVDD): Onboard / external IOVDD supply select. 1-2 selects onboard supply (default VDUT) 2-3 selects external supply (pin J6-3)

AVDD/DVDD

AVCC

IOVDD

R63 NI

R66 NI

R67 NI

R70 NI

R71 NI

3 2

PJ-102A

+3.3V

AMC7812EVM Documentation

AMC7812EVM-PDK User’s Guide SBAU177D–September 2010–Revised August 2014

www.ti.com

Figure 36. AMC7812EVM Schematic (3 of 3)

Submit Documentation Feedback

www.ti.com

6.2 AMC7812EVM PCB Components Layout

Figure 37 shows the layout of the components for the AMC7812EVM board.

AMC7812EVM Documentation

Figure 37. AMC7812EVM PCB Components Layout

SBAU177D–September 2010–Revised August 2014 AMC7812EVM-PDK User’s Guide

Submit Documentation Feedback

AMC7812EVM Documentation

www.ti.com

6.3 AMC7812 Test Board Bill of Materials

Table 10 lists the BOM for this EVM.

Table 10. Bill of Materials

Item Qty Designator Description Manufacturer Part Number

1 1 Printed Circuit Board Any 6517852 2 11 C1, C2, C3, C4, C5, C6, C7, C49, C54, CAP, CERM, 0.1uF, 25V, +/-5%, X7R, 0603 AVX 06033C104JAT2A

3 1 C8 CAP, CERM, 4.7uF, 10V, +/-10%, X5R, 0603 TDK CGB3B1X5R1A475K055AC 4 0 C9, C10, C11, C12, C13, C14, C15, C16, NI

5 2 C33, C34 CAP, CERM, 4.7uF, 50V, +/-10%, X7R, 1210 MuRata GRM32ER71H475KA88L 6 1 C35 CAP, AL, 22uF, 35V, +/-20%, 1 ohm, SMD Panasonic EEE-FC1V220P 7 3 C36, C37, C40 CAP, CERM, 47uF, 25V, +/-20%, X5R, 1206 TDK C3216X5R1E476M160AC 8 5 C38, C41, C46, C47, C52 CAP, CERM, 10uF, 25V, +/-10%, X7R, 1206 MuRata GRM31CR71E106KA12L 9 2 C39, C43 CAP, CERM, 1uF, 25V, +/-10%, X5R, 0805 TDK C2012X5R1E105K 10 1 C44 CAP, CERM, 10uF, 50V, +/-10%, X7R, 1210 MuRata GRM32ER71H106KA12L 11 1 C45 CAP, TA, 10uF, 10V, +/-10%, 0.9 ohm, SMD AVX TPSA106K010R0900 12 2 C48, C51 CAP, CERM, 10uF, 6.3V, +/-20%, X5R, 0603 TDK C1608X5R0J106M 13 1 C50 CAP, CERM, 1uF, 16V, +/-10%, X5R, 0603 TDK C1608X5R1C105K 14 2 C59, C61 CAP, CERM, 270pF, 50V, +/-5%, C0G/NP0, 0603 TDK C1608C0G1H271J 15 2 C60, C63 CAP, CERM, 2700pF, 25V, +/-10%, X7R, 0603 MuRata GRM188R71E272KA01D 16 1 C64 CAP, CERM, 0.01uF, 50V, +/-10%, X7R, 0603 TDK C1608X7R1H103K 17 1 D1 Diode, Zener, 5.1V, 500mW, SOD-123 Vishay-Semiconductor MMSZ4689-V 18 2 D2, D3 LED, Green, SMD Lumex SML-LX0603GW-TR 19 1 J1 Receptacle, 50mil 10x2, R/A, TH Mill-Max 853-43-020-20-001000 20 2 J2, J3 Header, TH, 100mil, 2x8, Gold plated, 230 mil above insulator Sullins Connector Solutions PBC08DAAN 21 1 J4 Header, TH, 100mil, 4x1, Gold plated, 230 mil above insulator Samtec TSW-104-07-G-S 22 1 J5 Connector, DC Jack 2.1X5.5 mm, TH CUI Inc. PJ-102A 23 1 J6 Terminal Block, 6A, 3.5mm Pitch, 4-Pos, TH On-Shore Technology ED555/4DS 24 1 J7 Header, TH, 100mil, 6x2, Gold plated, 230 mil above insulator Samtec TSW-106-07-G-D 25 4 JP1, JP3, JP4, JP5 Header, TH, 100mil, 3x1, Gold plated, 230 mil above insulator Samtec, Inc. TSW-103-07-G-S 26 1 JP2 Header, TH, 100mil, 3x2, Gold plated, 230 mil above insulator Samtec TSW-103-07-G-D 27 1 JP6 Header, TH, 100mil, 2x1, Gold plated, 230 mil above insulator Samtec TSW-102-07-G-S 28 1 Q1 Transistor, NPN, 40V, 0.2A, SOT-23 Fairchild Semiconductor MMBT3904 29 1 Q2 Transistor, PNP, 40V, 0.2A, SOT-23 Fairchild Semiconductor MMBT3906 30 13 R1, R2, R7, R8, R9, R10, R11, R17, R27, RES, 20.0k ohm, 1%, 0.1W, 0603 Yageo America RC0603FR-0720KL

C58, C65

C17, C18, C19, C20, C21, C22, C23, C24, C25, C26, C27, C28, C29, C30, C31, C32, C42, C53, C55, C56, C57, C62

R28, R29, R30, R76

AMC7812EVM-PDK User’s Guide SBAU177D–September 2010–Revised August 2014

Submit Documentation Feedback

www.ti.com

AMC7812EVM Documentation

Table 10. Bill of Materials (continued)

Item Qty Designator Description Manufacturer Part Number

31 38 R3, R4, R12, R13, R14, R15, R16, R18, RES, 0 ohm, 5%, 0.1W, 0603 Yageo America RC0603JR-070RL

32 0 R5, R6, R24, R52, R53, R54, R55, R57, NI

33 1 R44 RES, 49.9k ohm, 1%, 0.1W, 0603 Yageo America RC0603FR-0749K9L 34 1 R45 RES, 174k ohm, 1%, 0.1W, 0603 Yageo America RC0603FR-07174KL 35 1 R46 RES, 300 ohm, 1%, 0.1W, 0603 Yageo America RC0603FR-07300RL 36 1 R48 RES, 165k ohm, 1%, 0.1W, 0603 Yageo America RC0603FR-07165KL 37 1 R49 RES, 24.9k ohm, 1%, 0.1W, 0603 Yageo America RC0603FR-0724K9L 38 1 R50 RES, 13.7k ohm, 1%, 0.1W, 0603 Yageo America RC0603FR-0713K7L 39 1 R51 RES, 178k ohm, 1%, 0.1W, 0603 Yageo America RC0603FR-07178KL 40 1 R64 RES, 120 ohm, 1%, 0.1W, 0603 Yageo America RC0603FR-07120RL 41 1 R68 RES, 0.47 ohm, 1%, 0.1W, 0603 Panasonic ERJ-3RQFR47V 42 2 R77, R80 RES, 17.4 ohm, 1%, 0.1W, 0603 Yageo America RC0603FR-0717R4L 43 2 TP1, TP2 Test Point, Miniature, Black, TH Keystone 5001 44 7 TP3, TP4, TP5, TP6, TP7, TP8, TP9 Test Point, Miniature, Red, TH Keystone 5000 45 1 U1 4-BIT 1-OF-2 FET MULTIPLEXER / DEMULTIPLEXER HIGH BANDWIDTH BUS Texas Instruments TS5N412PW

46 1 U2 12-Bit ANALOG MONITORING AND CONTROL SOLUTION with Multichannel ADC, Texas Instruments AMC7812SRGC

47 1 U3 7-V to 50-V Input, 2.5-A Step-Down, Integrated Power Solution Texas Instruments LMZ35003RKG 48 1 U4 36-V, 1-A, 4.17-µVRMS, RF LDO Voltage Regulator, RGW0020A Texas Instruments TPS7A4700RGW 49 1 U5 1.5A Low Dropout Positive Regulators, 3-pin TO-263 National Semiconductor LM1086CS-3.3/NOPB 50 1 U6 Low-Noise, Very Low Drift, Precision VOLTAGE REFERENCE, DGK0008A Texas Instruments REF5025IDGK 51 1 U7 LOW ON-STATE RESISTANCE QUAD SPST CMOS ANALOG SWITCHES, PW0014A Texas Instruments TS12A44514PW 52 1 U8 Precision, 20MHz, 0.9pA, Low-Noise, RRIO, CMOS Operational Amplifier with Shutdown, Texas Instruments OPA2320AIDGK

53 4 Bumpon, Hemisphere, 0.44 X 0.20, Clear 3M SJ-5303 (CLEAR) 54 5 Shunt, 100mil, Gold plated, Black 3M 969102-0000-DA

R19, R20, R21, R22, R23, R25, R26, R31, R32, R33, R34, R35, R36, R37, R38, R39, R40, R41, R42, R43, R47, R56, R59, R62, R65, R69, R72, R73, R74, R79

R58, R60, R61, R63, R66, R67, R70, R71, R75, R78

SWITCH, PW0016A

DACs, and Temperature Sensors, RGC0064A

DGK0008A

SBAU177D–September 2010–Revised August 2014 AMC7812EVM-PDK User’s Guide

Submit Documentation Feedback

Revision D History

www.ti.com

Revision D History

Changes from C Revision (June 2014) to D Revision .................................................................................................... Page

• Updated JP1 jumper function description in Default Jumper Settings table....................................................... 9

• Removed jumper table.................................................................................................................. 22

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Revision C History

Changes from B Revision (June 2014) to C Revision .................................................................................................... Page

• Changed title of document to AMC7812EVM-PDK User’s Guide................................................................... 1

Revision B History

Changes from A Revision (May 2013) to B Revision ...................................................................................................... Page

• Changed entire document: format and content. This user guide is now patterned after the AMC7832EVM user's guide. . 1

Revision History SBAU177D–September 2010–Revised August 2014

Submit Documentation Feedback

ADDITIONAL TERMS AND CONDITIONS, WARNINGS, RESTRICTIONS, AND DISCLAIMERS FOR

EVALUATION MODULES

Texas Instruments Incorporated (TI) markets, sells, and loans all evaluation boards, kits, and/or modules (EVMs) pursuant to, and user expressly acknowledges, represents, and agrees, and takes sole responsibility and risk with respect to, the following:

1. User agrees and acknowledges that EVMs are intended to be handled and used for feasibility evaluation only in laboratory and/or development environments. Notwithstanding the foregoing, in certain instances, TI makes certain EVMs available to users that do not handle and use EVMs solely for feasibility evaluation only in laboratory and/or development environments, but may use EVMs in a hobbyist environment. All EVMs made available to hobbyist users are FCC certified, as applicable. Hobbyist users acknowledge, agree, and shall comply with all applicable terms, conditions, warnings, and restrictions in this document and are subject to the disclaimer and indemnity provisions included in this document.

2. Unless otherwise indicated, EVMs are not finished products and not intended for consumer use. EVMs are intended solely for use by technically qualified electronics experts who are familiar with the dangers and application risks associated with handling electrical mechanical components, systems, and subsystems.

3. User agrees that EVMs shall not be used as, or incorporated into, all or any part of a finished product.

4. User agrees and acknowledges that certain EVMs may not be designed or manufactured by TI.

5. User must read the user's guide and all other documentation accompanying EVMs, including without limitation any warning or restriction notices, prior to handling and/or using EVMs. Such notices contain important safety information related to, for example, temperatures and voltages. For additional information on TI's environmental and/or safety programs, please visit www.ti.com/esh or contact TI.

6. User assumes all responsibility, obligation, and any corresponding liability for proper and safe handling and use of EVMs.

7. Should any EVM not meet the specifications indicated in the user’s guide or other documentation accompanying such EVM, the EVM may be returned to TI within 30 days from the date of delivery for a full refund. THE FOREGOING LIMITED WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY TI TO USER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. TI SHALL NOT BE LIABLE TO USER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES RELATED TO THE HANDLING OR USE OF ANY EVM.

8. No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine, process, or combination in which EVMs might be or are used. TI currently deals with a variety of customers, and therefore TI’s arrangement with the user is not exclusive. TI assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or services with respect to the handling or use of EVMs.

9. User assumes sole responsibility to determine whether EVMs may be subject to any applicable federal, state, or local laws and regulatory requirements (including but not limited to U.S. Food and Drug Administration regulations, if applicable) related to its handling and use of EVMs and, if applicable, compliance in all respects with such laws and regulations.

10. User has sole responsibility to ensure the safety of any activities to be conducted by it and its employees, affiliates, contractors or designees, with respect to handling and using EVMs. Further, user is responsible to ensure that any interfaces (electronic and/or mechanical) between EVMs and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electrical shock hazard.

11. User shall employ reasonable safeguards to ensure that user’s use of EVMs will not result in any property damage, injury or death, even if EVMs should fail to perform as described or expected.

12. User shall be solely responsible for proper disposal and recycling of EVMs consistent with all applicable federal, state, and local requirements.

Certain Instructions. User shall operate EVMs within TI’s recommended specifications and environmental considerations per the user’s guide, accompanying documentation, and any other applicable requirements. Exceeding the specified ratings (including but not limited to input and output voltage, current, power, and environmental ranges) for EVMs may cause property damage, personal injury or death. If there are questions concerning these ratings, user should contact a TI field representative prior to connecting interface electronics including input power and intended loads. Any loads applied outside of the specified output range may result in unintended and/or inaccurate operation and/or possible permanent damage to the EVM and/or interface electronics. Please consult the applicable EVM user's guide prior to connecting any load to the EVM output. If there is uncertainty as to the load specification, please contact a TI field representative. During normal operation, some circuit components may have case temperatures greater than 60°C as long as the input and output are maintained at a normal ambient operating temperature. These components include but are not limited to linear regulators, switching transistors, pass transistors, and current sense resistors which can be identified using EVMs’ schematics located in the applicable EVM user's guide. When placing measurement probes near EVMs during normal operation, please be aware that EVMs may become very warm. As with all electronic evaluation tools, only qualified personnel knowledgeable in electronic measurement and diagnostics normally found in development environments should use EVMs.

Agreement to Defend, Indemnify and Hold Harmless. User agrees to defend, indemnify, and hold TI, its directors, officers, employees, agents, representatives, affiliates, licensors and their representatives harmless from and against any and all claims, damages, losses, expenses, costs and liabilities (collectively, "Claims") arising out of, or in connection with, any handling and/or use of EVMs. User’s indemnity shall apply whether Claims arise under law of tort or contract or any other legal theory, and even if EVMs fail to perform as described or expected.

Safety-Critical or Life-Critical Applications. If user intends to use EVMs in evaluations of safety critical applications (such as life support), and a failure of a TI product considered for purchase by user for use in user’s product would reasonably be expected to cause severe personal injury or death such as devices which are classified as FDA Class III or similar classification, then user must specifically notify TI of such intent and enter into a separate Assurance and Indemnity Agreement.

RADIO FREQUENCY REGULATORY COMPLIANCE INFORMATION FOR EVALUATION MODULES

Texas Instruments Incorporated (TI) evaluation boards, kits, and/or modules (EVMs) and/or accompanying hardware that is marketed, sold, or loaned to users may or may not be subject to radio frequency regulations in specific countries.

General Statement for EVMs Not Including a Radio

For EVMs not including a radio and not subject to the U.S. Federal Communications Commission (FCC) or Industry Canada (IC) regulations, TI intends EVMs to be used only for engineering development, demonstration, or evaluation purposes. EVMs are not finished products typically fit for general consumer use. EVMs may nonetheless generate, use, or radiate radio frequency energy, but have not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC or the ICES-003 rules. Operation of such EVMs may cause interference with radio communications, in which case the user at his own expense will be required to take whatever measures may be required to correct this interference.

General Statement for EVMs including a radio

User Power/Frequency Use Obligations: For EVMs including a radio, the radio included in such EVMs is intended for development and/or professional use only in legally allocated frequency and power limits. Any use of radio frequencies and/or power availability in such EVMs and their development application(s) must comply with local laws governing radio spectrum allocation and power limits for such EVMs. It is the user’s sole responsibility to only operate this radio in legally acceptable frequency space and within legally mandated power limitations. Any exceptions to this are strictly prohibited and unauthorized by TI unless user has obtained appropriate experimental and/or development licenses from local regulatory authorities, which is the sole responsibility of the user, including its acceptable authorization.

U.S. Federal Communications Commission Compliance For EVMs Annotated as FCC – FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant Caution

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications could void the user's authority to operate the equipment.

FCC Interference Statement for Class A EVM devices

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at its own expense.

FCC Interference Statement for Class B EVM devices

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

Industry Canada Compliance (English) For EVMs Annotated as IC – INDUSTRY CANADA Compliant:

This Class A or B digital apparatus complies with Canadian ICES-003. Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the

equipment.

Concerning EVMs Including Radio Transmitters

This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.

Concerning EVMs Including Detachable Antennas

Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication.

This radio transmitter has been approved by Industry Canada to operate with the antenna types listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device.

Canada Industry Canada Compliance (French)

Cet appareil numérique de la classe A ou B est conforme à la norme NMB-003 du Canada Les changements ou les modifications pas expressément approuvés par la partie responsable de la conformité ont pu vider l’autorité de

l'utilisateur pour actionner l'équipement.

Concernant les EVMs avec appareils radio

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

Concernant les EVMs avec antennes détachables

Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante.

Le présent émetteur radio a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés dans le manuel d’usage et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de l'émetteur.

Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265

spacer

Important Notice for Users of EVMs Considered “Radio Frequency Products” in Japan

EVMs entering Japan are NOT certified by TI as conforming to Technical Regulations of Radio Law of Japan.

If user uses EVMs in Japan, user is required by Radio Law of Japan to follow the instructions below with respect to EVMs:

1. Use EVMs in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal Affairs and Communications on March 28, 2006, based on Sub-section 1.1 of Article 6 of the Ministry’s Rule for Enforcement of Radio Law of Japan,

2. Use EVMs only after user obtains the license of Test Radio Station as provided in Radio Law of Japan with respect to EVMs, or

3. Use of EVMs only after user obtains the Technical Regulations Conformity Certification as provided in Radio Law of Japan with respect to EVMs. Also, do not transfer EVMs, unless user gives the same notice above to the transferee. Please note that if user does not follow the instructions above, user will be subject to penalties of Radio Law of Japan.

http://www.tij.co.jp

【無線電波を送信する製品の開発キットをお使いになる際の注意事項】本開発キットは技術基準適合証明を受けておりません。本製品のご使用に際しては、電波法遵守のため、以下のいずれかの措置を取っていただく必要がありますのでご注意ください。

1. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用いただく。

2. 実験局の免許を取得後ご使用いただく。

3. 技術基準適合証明を取得後ご使用いただく。。

なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします

上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。

日本テキサス・インスツルメンツ株式会社東京都新宿区西新宿６丁目２４番１号西新宿三井ビル

http://www.tij.co.jp

Texas Instruments Japan Limited

(address) 24-1, Nishi-Shinjuku 6 chome, Shinjuku-ku, Tokyo, Japan

IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the warranty in TI’s terms and conditions of sale of semiconductor products. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by applicable law, testing of all parameters of each component is not necessarily performed.

TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide adequate design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right relating to any combination, machine, or process in which TI components or services are used. Information published by TI regarding third-party products or services does not constitute a license to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of significant portions of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. TI is not responsible or liable for such altered documentation. Information of third parties may be subject to additional restrictions.

Resale of TI components or services with statements different from or beyond the parameters stated by TI for that component or service voids all express and any implied warranties for the associated TI component or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements.

Buyer acknowledges and agrees that it is solely responsible for compliance with all legal, regulatory and safety-related requirements concerning its products, and any use of TI components in its applications, notwithstanding any applications-related information or support that may be provided by TI. Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failures, monitor failures and their consequences, lessen the likelihood of failures that might cause harm and take appropriate remedial actions. Buyer will fully indemnify TI and its representatives against any damages arising out of the use of any TI components in safety-critical applications.

In some cases, TI components may be promoted specifically to facilitate safety-related applications. With such components, TI’s goal is to help enable customers to design and create their own end-product solutions that meet applicable functional safety standards and requirements. Nonetheless, such components are subject to these terms.

No TI components are authorized for use in FDA Class III (or similar life-critical medical equipment) unless authorized officers of the parties have executed a special agreement specifically governing such use.

Only those TI components which TI has specifically designated as military grade or “enhanced plastic” are designed and intended for use in military/aerospace applications or environments. Buyer acknowledges and agrees that any military or aerospace use of TI components which have not been so designated is solely at the Buyer's risk, and that Buyer is solely responsible for compliance with all legal and regulatory requirements in connection with such use.

TI has specifically designated certain components as meeting ISO/TS16949 requirements, mainly for automotive use. In any case of use of non-designated products, TI will not be responsible for any failure to meet ISO/TS16949.

Products Applications

Audio www.ti.com/audio Automotive and Transportation www.ti.com/automotive Amplifiers amplifier.ti.com Communications and Telecom www.ti.com/communications Data Converters dataconverter.ti.com Computers and Peripherals www.ti.com/computers DLP® Products www.dlp.com Consumer Electronics www.ti.com/consumer-apps DSP dsp.ti.com Energy and Lighting www.ti.com/energy Clocks and Timers www.ti.com/clocks Industrial www.ti.com/industrial Interface interface.ti.com Medical www.ti.com/medical Logic logic.ti.com Security www.ti.com/security Power Mgmt power.ti.com Space, Avionics and Defense www.ti.com/space-avionics-defense Microcontrollers microcontroller.ti.com Video and Imaging www.ti.com/video RFID www.ti-rfid.com OMAP Applications Processors www.ti.com/omap TI E2E Community e2e.ti.com Wireless Connectivity www.ti.com/wirelessconnectivity

Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265

Mouser Electronics

Authorized Distributor

Click to View Pricing, Inventory, Delivery & Lifecycle Information:

Texas Instruments: AMC7812EVM-PDK

Texas Instruments AMC7812EVM-PDK User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

AMC7812EVM-PDK User’s Guide

1 Overview

1.1 AMC7812EVM Kit Contents

1.2 Related Documentation from TI

2 AMC7812EVM Hardware Setup

2.1 Theory of Operation for AMC7812 Hardware

2.2 Signal Definitions of J1 (20-Pin Male Connector Socket)

2.3 Theory of Operation for SDM-USB-DIG Platform

3 AMC7812EVM Software Setup

3.1 Operating Systems for AMC7812EVM Software

3.2 AMC7812EVM Software Installation

4 AMC7812EVM Hardware Overview

4.1 Electrostatic Discharge (ESD) Caution

4.2 Connecting the Hardware

4.3 Connecting the USB Cable to the SDM-USB-DIG

4.4 AMC7812EVM Power Configurations

4.5 ADC Signal Pins

4.6 DAC Signal Pins

4.7 GPIO Signal Pins

5 AMC7812EVM Software Overview

5.1 Starting the AMC7812EVM Software

5.2 AMC7812EVM Software Features

5.2.1 Software Reset

5.2.2 AMC7812EVM Low-Level Configuration Page

5.2.3 AMC7812EVM ADC Page

5.2.4 AMC7812EVM DAC Page

5.2.5 AMC7812EVM ALARMS Page

5.2.6 AMC7812EVM GPIO + Temp Page

6 AMC7812EVM Documentation

6.1 AMC7812EVM Board Schematic

6.2 AMC7812EVM PCB Components Layout

6.3 AMC7812 Test Board Bill of Materials

Revision D History

Revision C History

Revision B History