Rainbow Electronics MAX5385 User Manual

Page 1

General Description

The MAX5383/MAX5384/MAX5385 low-cost, 8-bit digitalto-analog converters (DACs) in miniature 6-pin SOT23 packages have a simple 3-wire, SPI™/QSPI™/ MICROWIRE™-compatible serial interface that operates up to 10MHz. The MAX5383 has an internal +2V reference and operates from a +2.7V to +3.6V supply. The MAX5384 has an internal +4V reference and operates from a +4.5V to +5.5V supply. The MAX5385 operates over the full +2.7V to +5.5V supply range and has an internal reference equal to 0.9 ✕VDD.

The MAX5383/MAX5384/MAX5385 require an extremely low supply current of only 150µA (typ) and provide a buffered voltage output. These devices power up at zero code and remain there until a new code is written to the DAC registers. This provides additional safety for applications that drive valves or other transducers that need to be off on power-up. The MAX5383/MAX5384/ MAX5385 include a 1µA, low-power shutdown mode that features software-selectable output loads of 1kΩ, 100kΩ, or 1MΩ to ground.

Applications

Automatic Tuning (VCO)

Power Amplifier Bias Control

Programmable Threshold Levels

Automatic Gain Control

Automatic Offset Adjustment

Features

♦ 8-Bit Resolution in a Miniature 6-Pin SOT23

Package

♦ Wide +2.7V to +5.5V Supply Range (MAX5385)

♦ <1µA Shutdown Mode

♦ Software-Selectable Output Resistance During

Shutdown

♦ Buffered Output Drives Resistive Loads

♦ Low-Glitch Power-On Reset to Zero DAC Output

♦ 3-Wire SPI/QSPI/MICROWIRE-Compatible Interface

♦ < ±5% Full-Scale Error (MAX5385)

♦ < ±1LSB max INL/DNL

♦ Low 230µA (max) Supply Current

MAX5383/MAX5384/MAX5385

Low-Cost, Low-Power, 8-Bit DACs with 3-Wire

Serial Interface in SOT23

________________________________________________________________ Maxim Integrated Products 1

Pin Configuration

GND

MC68XXXX

PCS0

OUT

SCK

MOSI

SCLK

DIN

MAX5385

+2.7V TO +5.5V

Typical Operating Circuit

19-1718; Rev 2; 1/02

Ordering Information

SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp.

Selector Guide

For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

PART TEMP RANGE

MAX5383EUT-T -40°C to +85°C 6 SOT23 AADF

MAX5383EZT-T -40°C to +85°C 6 SOT23-Thin AAAH

MAX5384EUT-T -40°C to +85°C 6 SOT23 AADH

MAX5384EZT-T -40°C to +85°C 6 SOT23-Thin AAAI

MAX5385EUT-T -40°C to +85°C 6 SOT23 AADJ

MAX5385EZT-T -40°C to +85°C 6 SOT23-Thin AAAJ

PINPACKAGE

SOT

TOP MARK

PART INTERNAL REFERENCE

MAX5383 2V

MAX5384 4V

MAX5385 0.9 ✕ V

TOP VIEW

OUT

GND

MAX5383 MAX5384 MAX5385

SOT23

5 SCLK

DINV

Page 2

MAX5383/MAX5384/MAX5385

Low-Cost, Low-Power, 8-Bit DACs with 3-Wire Serial Interface in SOT23

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VDD= +2.7V to +3.6V (MAX5383), VDD= +4.5V to +5.5V (MAX5384), VDD= +2.7V to +5.5V (MAX5385), RL= 10kΩ, CL= 50pF, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are TA= +25°C.)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

VDDto GND..............................................................-0.3V to +6V

OUT ............................................................-0.3V to (V

+ 0.3V)

CS, SCLK, DIN to GND ............................................-0.3V to +6V

Maximum Current into Any Pin............................................50mA

Continuous Power Dissipation (T

= +70°C)

6-Pin SOT23 (derate 8.7mW/°C above +70°C)..........696mW

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Maximum Junction Temperature .....................................+150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

STATIC ACCURACY

Resolution 8 Bits

Integral Linearity Error INL (Note 1) ±1 LSB

Differential Linearity Error DNL Guaranteed monotonic ±1 LSB

Offset Error V

Offset Error Supply Rejection MAX5385 (Notes 2, 3) 60 dB

Offset Error Temperature Coefficient

Full-Scale Error C ode = 255, no l oad

Full-Scale Error Supply Rejection

Full-Scale Error Temperature Coefficient

DAC OUTPUT

Internal Reference Voltage (Note 5)

Output Load Regulation

Shutdown Output Resistance to GND

DYNAMIC PERFORMANCE

Voltage Output Slew Rate Positive and negative 0.4 V/µs

Output Settling Time To 1/2 LSB, 50kΩ and 50pF load (Note 6) 20 µs

Digital Feedthrough Code = 0, all digital inputs from 0 to V

REF

(Note 2) ±1 ±25 mV

MAX5383/MAX5384 3

MAX5385 1

C od e = 255 ( N ote 4) M AX 5383/M AX 5384 50 dB

Code = 255

MAX5383 1.8 2 2.2

MAX5384 3.6 4 4.4

MAX5385

Code = 255, 0µA to 100µA0.5

Code = 0, 0µA to 100µA0.5

= 0 to V

OUT

M AX 5383/M AX 5384 10

MAX5385 5

M AX 5383/M AX 5384 ±40

MAX5385 ±10

0.85 × V

[D13, D12] = 0, 1 1k

[D13, D12] = 1, 0 100k

[D13, D12] = 1, 1 1M

0.9 × V

0.95 × V

2 nVs

ppm/ °C

% of

i d eal FS

ppm/ °C

LSB

Ω

Page 3

MAX5383/MAX5384/MAX5385

Low-Cost, Low-Power, 8-Bit DACs with 3-Wire

Serial Interface in SOT23

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VDD= +2.7V to +3.6V (MAX5383), VDD= +4.5V to +5.5V (MAX5384), VDD= +2.7V to +5.5V (MAX5385), RL= 10kΩ, CL= 50pF, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are TA= +25°C.)

TIMING CHARACTERISTICS

(Figures 3 and 4, VDD= +2.7V to +3.6V (MAX5383), VDD= +4.5V to +5.5V (MAX5384), VDD= +2.7V to +5.5V (MAX5385), R

= 10kΩ, CL= 50pF, TA = T

MIN

to T

MAX

, unless otherwise noted. Typical values are TA= +25°C.) (Note 7)

Digital-Analog Glitch Impulse Code 127 to 128 40 nVs

Wake-Up Time From software shutdown 50 µs

POWER REQUIREMENTS

Supply Current I

DIGITAL INPUTS

Input Low Voltage V

Input High Voltage V

Input Hysteresis V

Input Capacitance C

Input Leakage Current I

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

MAX5383 2.7 3.6

MAX5384 4.5 5.5Supply Voltage V

MAX5385 2.7 5.5

No load, all digital inputs at 0 or VDD, code = 255

Shutdown mode 1

(Note 7) 10 pF

0.7 × V

150 230

0.05 × V

0.3 × V

±1 µA

µA

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

SCLK Period t

SCLK Pulse Width High t

SCLK Pulse Width Low t

CS Fall to SCLK Rise Setup Time

SCLK Rise to CS Rise Hold Time

DIN Setup Time t

DIN Hold Time t SCLK Rise to CS Fall Delay t

CSS

CSH

CS0

100 ns

40 ns

0ns

40 ns

0ns

10 ns

Page 4

MAX5383/MAX5384/MAX5385

Low-Cost, Low-Power, 8-Bit DACs with 3-Wire Serial Interface in SOT23

4 _______________________________________________________________________________________

Typical Operating Characteristics

(VDD= +3.0V (MAX5383), V

= +5.0V (MAX5384/MAX5385), TA= +25°C, unless otherwise noted.)

TIMING CHARACTERISTICS (continued)

(Figures 3 and 4, VDD= +2.7V to +3.6V (MAX5383), VDD= +4.5V to +5.5V (MAX5384), VDD= +2.7V to +5.5V (MAX5385), R

= 10kΩ, CL= 50pF, TA = T

MIN

to T

MAX

, unless otherwise noted. Typical values are TA= +25°C.) (Note 7)

Note 1: Guaranteed from code 5 to code 255. Note 2: The offset value extrapolated from the range over which the INL is guaranteed. Note 3: MAX5385 tested at 5V ±10%. Note 4: MAX5383 tested at 3V ±10%; MAX5384 tested at 5V ±10%. Note 5: Actual output voltages at full-scale are 255/256

REF

Note 6: Output settling time is measured by stepping from code 5 to code 255, and from code 255 to code 5. Note 7: Guaranteed by design.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

CS Rise to SCLK Rise Hold t CS Pulse Width High t

INTEGRAL NONLINEARITY vs. CODE

0.075

0.050

0.025

-0.025

INL (LSB)

-0.050

-0.075

CS1

CSW

MAX5383/4/5-01

-0.05

-0.10

INL (LSB)

-0.15

INTEGRAL NONLINEARITY

vs. SUPPLY VOLTAGE

MAX5383/4/5-02

40 ns

100 ns

INTEGRAL NONLINEARITY

vs. TEMPERATURE

-0.025

INL (LSB)

MAX5383/4/5-03

-0.100

0 100 200 300

150

CODE

DIFFERENTIAL NONLINEARITY vs. CODE

0.010

0.005

-0.005

DNL (LSB)

-0.010

-0.015

-0.020 0 100 200 300

CODE

250

MAX5383/4/5-04

DNL (LSB)

-0.20

2.5 4.03.0 3.5 4.5 5.0 5.5 SUPPLY VOLTAGE (V)

DIFFERENTIAL NONLINEARITY

vs. SUPPLY VOLTAGE

-0.005

-0.010

-0.015

-0.020

-0.025

2.5 4.03.0 3.5 4.5 5.0 5.5 SUPPLY VOLTAGE (V)

MAX5383/4/5-05

-0.050

-40 20-20 0 40 60 80 100 TEMPERATURE (°C)

DIFFERENTIAL NONLINEARITY

vs. TEMPERATURE

-0.005

-0.010

DNL (LSB)

-0.015

-0.020

-0.025

-40 20-20 0 40 60 80 100

TEMPERATURE (°C)

MAX5383/4/5-06

Page 5

MAX5383/MAX5384/MAX5385

Low-Cost, Low-Power, 8-Bit DACs with 3-Wire

Serial Interface in SOT23

_______________________________________________________________________________________ 5

Typical Operating Characteristics (continued)

(VDD= +3.0V (MAX5383), V

= +5.0V (MAX5384/MAX5385), TA= +25°C, unless otherwise noted.)

TOTAL UNADJUSTED ERROR vs. CODE

0.15

0.10

0.05

-0.05

TUE (LSB)

-0.10

-0.15

-0.20 0 100 200 300

CODE

FULL-SCALE ERROR vs. SUPPLY VOLTAGE

0.75

0.50

0.25

-0.25

FULL-SCALE ERROR (LSB)

-0.50

OFFSET ERROR vs. SUPPLY VOLTAGE

MAX5383/4/5-07

MAX5384

MAX5383

MAX5385

(mV)

-0.25

-0.50

2.5 4.03.0 3.5 4.5 5.0 5.5 SUPPLY VOLTAGE (V)

MAX5383/4/5-10

1.2

0.8

0.4

-0.4 FULL-SCALE ERROR (%)

-0.8

0.75

0.50

0.25

-0.25

FULL-SCALE ERROR (LSB)

-0.50

FULL-SCALE ERROR vs. TEMPERATURE

MAX5383/4/5-08

OFFSET ERROR vs. TEMPERATURE

(mV)

-0.25

-0.50

-40 20-20 0 40 60 80 100 TEMPERATURE (°C)

MAX5383 MAX5384

MAX5383/4/5-11

MAX5385

1.2

0.8

0.4

-0.4 FULL-SCALE ERROR (%)

-0.8

MAX5383/4/5-09

-0.75

2.5 4.03.0 3.5 4.5 5.0 5.5 SUPPLY VOLTAGE (V)

SUPPLY CURRENT vs. SUPPLY VOLTAGE

200

180

160

140

120

100

SUPPLY CURRENT (µA)

MAX5383

MAX5385

2.5 4.03.0 3.5 4.5 5.0 5.5 SUPPLY VOLTAGE (V)

MAX5384

-1.2

MAX5383/4/5-12

-0.75

-40 20-20 0 40 60 80 100 TEMPERATURE (°C)

SUPPLY CURRENT vs. TEMPERATURE

160

NO LOAD

155

150

145

140

SUPPLY CURRENT (µA)

135

130

-40 20-20 0 40 60 80 100

MAX5384

MAX5385

MAX5383

TEMPERATURE (°C)

-1.2

MAX5383/4/5-13

Page 6

MAX5383/MAX5384/MAX5385

Low-Cost, Low-Power, 8-Bit DACs with 3-Wire Serial Interface in SOT23

6 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(VDD= +3.0V (MAX5383), V

= +5.0V (MAX5384/MAX5385), TA= +25°C, unless otherwise noted.)

1.0

0.6

0.4

0.2

0.8

-40 20-20 0 40 60 80 100

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

MAX5383/4/5-16

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

VDD = +5V

VDD = +3V

2.0

1.5

2.5

3.0

4.0

3.5

4.5

0.1

0.2

021436589710

OUTPUT LOAD REGULATION

MAX5383/4/5-17

LOAD CURRENT (mA)

A: MAX5384/MAX5385, V

= +4.5V, FULL SCALE OR SOURCING

B: MAX5383, FULL SCALE, V

= +2.7V SINKING, VDD = +5.0V SOURCING

C: MAX5383, FULL SCALE, V

= +2.7V SOURCING

D: ZERO CODE, V

= +2.7V SINKING

E: ZERO CODE, V

= +5.5V SINKING

OUT

FULL SCALE (V)

OUT

ZERO CODE (V)

4µs/div

OUTPUT VOLTAGE ON POWER-UP

MAX5383/4/5-18

OUT

50mV/div

2V/div

10µs/div

MAX5383

OUTPUT VOLTAGE

EXITING SHUTDOWN

MAX5383/4/5-19

OUT

500mV/div

3V/div

SHDN TO 0 x 80

1µs/div

MAX5383

OUTPUT SETTLING FROM

1/4FS TO 3/4FS

MAX5383/4/5-20

OUT

0.5V/div

3V/div

1µs/div

MAX5383

OUTPUT SETTLING FROM

3/4FS TO 1/4FS

MAX5383/4/5-21

OUT

0.5V/div

3V/div

160

150

145

140

135

155

130

09632 64 128 160 192 224 256

SUPPLY CURRENT vs. CODE

MAX5383/4/5-14

CODE

SUPPLY CURRENT (µA)

MAX5384 V

= +5V

MAX5385 V

= +5V

MAX5383 V

= +3V

MAX5383 V

= +5V

1.0

0.4

0.2

0.6

0.8

2.5 4.03.0 3.5 4.5 5.0 5.5

SHUTDOWN SUPPLY CURRENT

vs. SUPPLY VOLTAGE

MAX5383/4/5-15

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (µA)

Page 7

Detailed Description

The MAX5383/MAX5384/MAX5385 voltage-output, 8-bit DACs ensure monotonic performance by offering full 8bit performance with less than 1LSB integral nonlinearity error and less than 1LSB differential nonlinearity error. The devices use a simple 3-wire, SPI/QSPI/ MICROWIRE-compatible serial interface that operates up to 10MHz. They include an internal reference, an output buffer, and three low-current shutdown modes, making these devices ideal for low-power, highly integrated applications. Figure 1 shows the devices’ functional diagram.

Analog Section

The MAX5383/MAX5384/MAX5385 employ a currentsteering DAC topology as shown in Figure 2. At the core of the DAC is a reference voltage-to-current converter (V/I) that generates a reference current. This current is mirrored to 255 equally weighted current sources. DAC switches control the outputs of these current mirrors so that only the desired fraction of the total current-mirror currents is steered to the DAC output. The current is then converted to a voltage across a resistor, and this voltage is buffered by the output buffer amplifier.

Output Voltage

Table 1 shows the relationship between the DAC code and the analog output voltage. The 8-bit DAC code is binary unipolar with 1LSB = (V

REF

/256). The MAX5383/ MAX5384 have a full-scale output voltage of (+2V - 1LSB) and (+4V - 1LSB), set by the internal references. The MAX5385 has a full-scale output voltage of (0.9 ✕VDD1LSB).

Output Buffer

The DAC voltage output is an internally buffered unitygain follower that slews up to ±0.4V/µs. The output can swing from 0 to full scale. With a 1/4FS to 3/4FS output transition, the amplifier outputs typically settle to 1/2LSB in less than 5µs when loaded with 10kΩ in parallel with 50pF. The buffer amplifiers are stable with any

MAX5383/MAX5384/MAX5385

Low-Cost, Low-Power, 8-Bit DACs with 3-Wire

Serial Interface in SOT23

_______________________________________________________________________________________ 7

Typical Operating Characteristics (continued)

(VDD= +3.0V (MAX5383), V

= +5.0V (MAX5384/MAX5385), TA= +25°C, unless otherwise noted.)

2µs/div

MAX5383

OUTPUT SETTLING

1LSB STEP UP

MAX5383/4/5-22

OUT

20mV/div

AC-COUPLED

0 x 7F TO 0 x 80

3V/div

MAX5383

OUTPUT SETTLING

1LSB STEP DOWN

MAX5383/4/5-23

OUT

20mV/div

AC-COUPLED

2µs/div

0 x 80 TO 0 x 7F

3V/div

Pin Description

PIN NAME DESCRIPTION

1 OUT DAC Voltage Output

2 GND Ground

3VDDPower-Supply Input

4 DIN Serial Data Input

5 SCLK Serial Clock Input

6 CS Chip-Select Input

Page 8

combination of resistive loads >10kΩ and capacitive loads <50pF.

Power-On Reset

The MAX5383/MAX5384/MAX5385 have a power-on reset circuit to set the DAC’s output to 0 when VDDis first applied or when VDDdips below 1.7V (typ). This ensures that unwanted DAC output voltages will not occur immediately following a system startup, such as after a loss of power. The output glitch on startup is typically less than 50mV.

Shutdown Mode

The MAX5383/MAX5384/MAX5385 include three software-controlled shutdown modes that reduce the supply current to <1µA. All internal circuitry is disabled, and a known impedance is placed from OUT to GND to ensure 0V while in shutdown. Table 2 details the three shutdown modes of operation.

Digital Section

3-Wire Serial Interface

The MAX5383/MAX5384/MAX5385s’ digital interface is a standard 3-wire connection compatible with SPI/QSPI/MICROWIRE interfaces. The chip-select input (CS) frames the serial data loading at the data-input pin (DIN). Immediately following CS’s high-to-low transition, the data is shifted synchronously and latched into the input register on the rising edge of the serial clock input (SCLK). After 16 bits have been loaded into the serial

MAX5383/MAX5384/MAX5385

Low-Cost, Low-Power, 8-Bit DACs with 3-Wire Serial Interface in SOT23

8 _______________________________________________________________________________________

Figure 1. Functional Diagram

Figure 2. Current-Steering DAC Topology

Table 1. Unipolar Code Output Voltage

CURRENT-STEERING

DAC

255

DATA LATCH

SERIAL INPUT REGISTERSCLK

DIN

REF

CONTROL LOGIC

REF

SW1 SW2 SW255

OUT

MAX5383 MAX5384 MAX5385

GND

DAC CODE

[D11–D4]

1111 1111

1000 0000 1V 2V 0.9 × VDD / 2

0000 0001 7.8mV 15.6mV 0.9 × VDD / 256

0000 0000 0 0 0

MAX5383 MAX5384 MAX5385

(255/256)

OUTPUT VOLTAGE

(255/256)

× V

0.9 (255/256)

Page 9

input register, it transfers its contents to the DAC latch on CS’s low-to-high transition (Figure 3). Note that if CS is not kept low during the entire 16 SCLK cycles, data will be corrupted. In this case, reload the DAC latch with a new 16-bit word. The serial clock (SCLK) can idle either high or low between transitions. Figure 4 shows the complete 3-wire serial interface transmission. Table 3 lists serial interface mapping.

Applications Information

Device Powered by an External Reference

Since the MAX5385 generates an output voltage proportional to VDD, a noisy power supply will affect the accuracy of the on-board reference, thereby affecting the overall accuracy of the DAC. The circuit in Figure 5 rejects this power-supply noise by powering the device directly with a precision voltage reference, improving overall system accuracy. The MAX6103 (+3V, 75ppm) or the MAX6105 (+5V, 75ppm) precision voltage references are ideal choices due to the low power requirements of the MAX5385. This solution is also useful when the required full-scale output voltage is different from the available supply voltages.

Digital Inputs and Interface Logic

The digital interface for the 8-bit DAC is based on a 3-wire standard that is compatible with SPI, QSPI, and MICROWIRE interfaces. The three digital inputs (CS, DIN, and SCLK) load the digital input serially into the DAC.

All the digital inputs include Schmitt-trigger buffers to accept slow-transition interfaces. This means that optocouplers can interface directly to the MAX5383/ MAX5384/MAX5385 without additional external logic. The digital inputs are compatible with CMOS logic levels and can be driven with voltages up to +5.5V regardless of the supply voltage.

Power-Supply Bypassing and Layout

Careful PC board layout is important for best system performance. To reduce crosstalk and noise injection, keep analog and digital signals separate. To ensure that the ground return from GND to the supply ground is short and low impedance, a ground plane is recommended. Bypass VDDwith a 0.1µF capacitor to ground as close as possible to the device. If the supply is excessively noisy, connect a 10Ω resistor in series with the supply and VDDand add additional capacitance.

MAX5383/MAX5384/MAX5385

Low-Cost, Low-Power, 8-Bit DACs with 3-Wire

Serial Interface in SOT23

_______________________________________________________________________________________ 9

Table 3. Serial Interface Mapping

X = Don’t care

Table 2. Shutdown Modes

DAC CODE

[D13 AND D12]

01 Shutdown 1k 1

10 Shutdown 100k 1

11 Shutdown 1M 1

MODE

OUTPUT RESISTANCE TO

GROUND (Ω)

MAXIMUM SUPPLY

CURRENT (µA)

MSB LSB OUTPUT

XX00 0000 0000 XXXX 0V Normal operation

XX00 1111 1111 XXXX

XX00 0000 0001 XXXX V

XX00 1000 0000 XXXX V

XX01 XXXX XXXX XXXX 0V

XX10 XXXX XXXX XXXX 0V

XX11 XXXX XXXX XXXX 0V

16-BIT SERIAL WORD

ANALOG

× (255/256)

REF

× (1/256) Normal operation

REF

× (128/256) Normal operation

REF

FUNCTION

Normal operation

Shutdown,

1kΩ to GND

Shutdown,

100kΩ to GND

Shutdown,

1MΩ to GND

Page 10

MAX5383/MAX5384/MAX5385

Chip Information

TRANSISTOR COUNT: 2160

Low-Cost, Low-Power, 8-Bit DACs with 3-Wire Serial Interface in SOT23

10 ______________________________________________________________________________________

Figure 3. 3-Wire Serial Interface Timing Diagram

Figure 4. Complete 3-Wire Serial Interface Transmission

Figure 5. Powering the MAX5385 with a Precision Voltage Reference

CSH

SCLK

DIN

CSO

CSS

D15 D14

SCLK

DIN

D15 D8 D7 D6 D5 D4 D3 D2 D1 D0

D14 D13 D12 D11 D10 D9

CS1

DAC

UPDATED

+3.2V TO +12V

MAX6103

OUT

GND

+3.00V

CS DIN SCLK

MAX5385

GND

0.1µF

OUT

0 TO +2.7V

Page 11

MAX5383/MAX5384/MAX5385

Low-Cost, Low-Power, 8-Bit DACs with 3-Wire

Serial Interface in SOT23

Package Information

______________________________________________________________________________________ 11

Page 12

MAX5383/MAX5384/MAX5385

Low-Cost, Low-Power, 8-Bit DACs with 3-Wire Serial Interface in SOT23

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

Package Information (continued)