TEXAS INSTRUMENTS THS1206, THS12082, THS10064, THS10082 Technical data
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User’s Guide
January 2001 AAP Data Conversion
SLAU042B
About This Manual
Information About Cautions and Warnings
Preface
Read This First
This user’s guide serves as a reference book for the THS1206/THS12082/
THS10064/THS10082 evaluation module. It describes the operation and
usage of the 12-bit THS1206/THS12082 and 10-bit THS10064/THS10082
analog-to-digital converter (ADC) evaluation modules.
How to Use This Manual
This document contains the following chapters:
- Chapter 1 EVM Description
- Chapter 2 Common-Connector Interface
- Chapter 3 Physical Description
- Chapter 4 Schematics
Information About Cautions and Warnings
This book contains cautions.
This is an example of a caution statement.
A caution statement describes a situation that could potentially
damage your software or equipment.
The information in a caution is provided for your protection. Please read each
caution carefully.
Read This First
iii
Related Documentation From Texas Instruments
Related Documentation From Texas Instruments
Data Sheets:
THS1206 data sheet (literature number SLAS217B) contains electrical
specifications, available temperature options, general overview of the device, and application information.
THS12082 data sheet (literature number SLAS216) contains electrical
specifications, available temperature options, general overview of the device, and application information.
THS10064 data sheet (literature number SLAS255) contains electrical
specifications, available temperature options, general overview of the device, and application information.
THS10082 data sheet (literature number SLAS254) contains electrical
specifications, available temperature options, general overview of the device, and application information.
iv
Running Title—Attribute Reference
Contents
1 EVM Description 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Purpose 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Power Supply Requirements 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 EVM Basic Function 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 EVM Setup 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Common-Connector Interface 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Daughtercard Interface 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Physical Description 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Printed-Circuit Board 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Bill of Materials 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Schematics 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter Title—Attribute Reference
v
Running Title—Attribute Reference
Figures
3–1 Silkscreen (Top) 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–2 Silkscreen (Bottom) 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–3 Printed-Circuit Board Layer 1 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–4 Printed-Circuit Board Layer 2 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–5 Printed-Circuit Board Layer 3 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–6 Printed-Circuit Board Layer 4 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables
2–1 Jumper J6, Expansion Peripheral Interface Pinout 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–2 Jumper J7, Expansion Peripheral Interface Pinout 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–1 Bill of Materials 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
vi
Chapter 1
EVM Description
This chapter gives a general description and overview of the THS1206/
THS12082/THS10064/THS10082 evaluation module (EVM), and describes
the requirements for using this module.
Topic Page
1.1 Purpose 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Power Supply Requirements 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 EVM Basic Function 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 EVM Setup 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1
Purpose
1.1 Purpose
The evaluation module provides a platform for lab prototype evaluation of the
Texas Instruments 12-bit THS1206/THS12082 and the 10-bit THS10064/
THS10082 high-speed analog-to-digital converters. In addition, it provides the
interface to Texas Instruments digital signal processor kits or evaluation
modules, which provide the common-connector interface (C6201, C6701,
C6211, C5402).
1.2 Power Supply Requirements
- The EVM is designed to be powered by a lab dc power supply (red and
black inputs V
6 V to 10 V. It can also be powered by a DSP starter kit or evaluation
module, which features the common-connector interface. The selection is
done with jumpers J1 and J2.
Voltage Limits
Exceeding the 10-V maximum supply voltage range can damage
EVM components.
and AGND). The required supply voltage range is from
DD
1.3 EVM Basic Function
The EVM allows evaluation of the THS1206, THS12082, THS10064, and
THS10082 analog-to-digital converters. Typically, a processor is used for
evaluating these devices. The EVM is specifically designed for interfacing to
the DSP starter kits or evaluation modules, which feature the commonconnector interface (C6201, C6701, C6211, C5402).
The different operation modes for the analog input configuration of the
THS1206, THS12082, THS10064, and THS10082 are available on the
evaluation module. Any channel selection can be done according to the data
sheet of each device.
- Single-ended analog input
The THS1206/THS10064 (THS12082/THS10082) provide up to four
(two) single-ended analog input channels. These four (two) single-ended
inputs are provided on the EVM via the four BNC connectors, which are
labeled AINP, AINM, BINP, and BINM. BNC connectors AINP and AINM
do not have any function with the THS12082 and THS10082, which only
feature two single-ended analog input channels. The analog input voltage
range is from –1 V to 1 V . The analog input is level-shifted into the analog
input range of the analog-to-digital converter (1.5 V to 3.5 V) by using an
operational amplifier in an inverting configuration. The voltage used for the
level shift is generated by the REFOUT (2.5 V) of the analog-to-digital
converter. A resistor divider provides the 1.25 V from the 2.5-V output
voltage. The analog input signal is dc-coupled.
1-2
EVM Setup
- Differential analog input
The THS1206/THS10064 (THS12082/THS10082) provide up to two
(one) differential analog input channels to the analog-to-digital converter .
These two (one) differential inputs are provided on the EVM via the two
BNC connectors, which are labeled ADIFF and BDIFF. The BNC
connector ADIFF does not have any function with the THS12082 and
THS10082, which only feature one differential analog input channel. The
analog input voltage range is from –2 V to 2 V . T o use the differential mode,
a single ended signal is applied to ADIFF or BDIFF. This signal is
converted into a differential signal by a transformer, and is therefore
ac-coupled. The center tap of the transformer is connected to the common
mode output voltage REFOUT of the analog-to-digital converter. As a
result, the input signal is shifted to the common-mode voltage REFOUT.
- Clock circuit
An external clock with frequency up to 6 MHz (8 MHz for the THS10082
and THS12082) is required for operation of the analog-to-digital converter
in the continuous-conversion mode. The external clock source is required
to drive the 50-Ω BNC input EXT-CLK. The clock signal can also be
generated from the connected processor. J7 should be set to the
appropriate position.
1.4 EVM Setup
- Digital output
The digital output of the analog-to-digital converter is applied to connector
block J9 and is also connected to the data bus of the common connector
interface. No latch is used between the analog-to-digital converter and J9.
The analog-to-digital converter is able to drive up to 30 pF at the data bus
D0–D11 (D0–D9 for the THS10064 and THS10082).
The EVM provides a platform for lab-prototype evaluation. Typically, it is
operated by using a Texas Instruments DSP kit or evaluation module.
- J1: selection of the analog supply voltage:
J1 inserted between 1 and 2: the supply voltage (5 V) is taken from the
DSP starter kit or evaluation module with the common-connector interface. No external analog supply voltage is required in this configuration.
J1 inserted between 2 and 3: for use of an external dc power supply (6 V
to 10 V). The supply voltage, ranging from 6 V to 10 V , is regulated to 5 V by
using the Texas Instruments low-dropout regulator TPS7250.
- J2: selection of the digital supply voltage:
J2 inserted between 1 and 2: the supply voltage (3.3 V) is taken from the
DSP starter kit or evaluation module with the common-connector
interface. No external digital supply voltage is required in this
configuration.
J2 inserted between 2 and 3: for use of an external dc power supply (6 V
to 10 V). The supply voltage, ranging from 6 V to 10 V , is regulated to 3.3 V
by using the Texas Instruments low-dropout regulator TPS7233.
EVM Description
1-3
EVM Setup
J3: selection of the analog input configuration:
-
J3 inserted between 1 and 4: selection of the differential input ADIFF (in
combination with J4 set between 1 and 4)
J3 inserted between 2 and 5: selection of the single ended input AINP
J3 inserted between 3 and 6: required for the THS12082 and THS10082,
where pin 31 (input AINP of the THS1206) functions as an internal FIFO
overflow indicator (OV_FL). This pin can be monitored during data
converter software debugging.
- J4: selection of the analog input configuration:
J4 inserted between 1 and 4: selection of the differential input ADIFF (in
combination with J3 set between 1 and 4)
J4 inserted between 2 and 5: selection of the single ended input AINM
J4 inserted between 3 and 6: required for the THS12082 and THS10082,
where the input AINM of the THS1206 functions as RESET input. Pin 3 of
J4 is connected to the RESET signal of the common-connector interface.
- J5: selection of the analog input configuration;
J5 inserted between 1 and 2: selection of the single ended input BINP
J5 inserted between 2 and 3: selection of the differential input BDIFF (in
combination with J6 set between 2 and 3)
- J6: selection of the analog input configuration:
J6 inserted between 1 and 2: selection of the single ended input BINM
J6 inserted between 2 and 3: selection of the differential input BDIFF (in
combination with J5 set between 2 and 3)
- J7: selection of the clock source:
J7 inserted between 1 and 2: the clock input of the data converter is
connected to the common connector interface. In this case, the DSP
should generate the clock signal.
J7 inserted between 2 and 3: the clock signal should be applied to the
BNC connector EXT_CLK in this configuration.
- J8: J8 is a connector block where the following digital signals can be
monitored:
Pin Description Pin Description
Pin 1 GND Pin 6 WR/
Pin 2 CLK Pin 7 GND
Pin 3 GND Pin 8 OV_FL
Pin 4 DATA_AV Pin 9 GND
1-4
Pin 5 GND Pin 10 RESET
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