Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsData collecting ICsData acquisition IC - DA converter (DAC) PDIP 8

__________________General Description

The MAX5352/MAX5353 combine a low-power, voltage-

output, 12-bit digital-to-analog converter (DAC) and a

precision output amplifier in an 8-pin µMAX or DIP pack-

age. The MAX5352 operates from a single +5V supply,

and the MAX5353 operates from a single +3.3V supply.

Both devices draw less than 280µA of supply current.

The output amplifier’s inverting input is available to the

user, allowing specific gain configurations, remote

sensing, and high output current capability. This makes

the MAX5352/MAX5353 ideal for a wide range of appli-

cations, including industrial process control. Other fea-

tures include a software shutdown and power-on reset.

The serial interface is compatible with SPI™/QSPI™

and Microwire™. The DAC has a double-buffered input,

organized as an input register followed by a DAC regis-

ter. A 16-bit serial word loads data into the input regis-

ter. The DAC register can be updated independently or

simultaneously with the input register. All logic inputs

are TTL/CMOS-logic compatible and buffered with

Schmitt triggers to allow direct interfacing to opto-

couplers.

________________________Applications

Industrial Process Controls

Automatic Test Equipment

Digital Offset and Gain Adjustment

Motion Control

Remote Industrial Controls

Microprocessor-Controlled Systems

______________________________Features

♦ 12-Bit DAC with Configurable Output Amplifier

♦ +5V Single-Supply Operation (MAX5352)

+3.3V Single-Supply Operation (MAX5353)

♦ Low Supply Current: 0.28mA Normal Operation

2µA Shutdown Mode

♦ Available in 8-Pin µMAX

♦ Power-On Reset Clears DAC Output to Zero

♦ SPI/QSPI and Microwire Compatible

♦ Schmitt-Trigger Digital Inputs for Direct

Optocoupler Interface

♦ +3.3V MAX5353 Directly Interfaces with +5V Logic

MAX5352/MAX5353

Low-Power, 12-Bit Voltage-Output DACs

with Serial Interface

________________________________________________________________

Maxim Integrated Products

MAX5352

MAX5353

OUT

DIN

SCLK

DAC

REF

DAC

INPUT

CONTROL

GND

16-BIT

SHIFT

____________________Functional Diagram

REF

DIN

SCLK

GND

OUT

MAX5352

MAX5353

DIP/µMAX

TOP VIEW

_______________________Pin Configuration

19-1196; Rev 0; 2/97

PART*

MAX5352ACPA

MAX5352BCPA 0°C to +70°C

0°C to +70°C

TEMP. RANGE PIN-PACKAGE

8 Plastic DIP

_________________Ordering Information

Ordering Information continued at end of data sheet.

Contact factory for availability of 8-pin SO package.

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

INL

(LSB)

±1/2

±1

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

MAX5352ACUA

MAX5352BCUA 0°C to +70°C

0°C to +70°C 8 µMAX

8 µMAX

±1/2

±1

Summary of content (16 pages)

PAGE 1
9-1196; Rev 0; 2/97 Low-Power, 12-Bit Voltage-Output DACs with Serial Interface ______________________________Features ♦ 12-Bit DAC with Configurable Output Amplifier The output amplifier’s inverting input is available to the user, allowing specific gain configurations, remote sensing, and high output current capability. This makes the MAX5352/MAX5353 ideal for a wide range of applications, including industrial process control. Other features include a software shutdown and power-on reset.
PAGE 2
MAX5352/MAX5353 Low-Power, 12-Bit Voltage-Output DACs with Serial Interface ABSOLUTE MAXIMUM RATINGS VDD to GND .................................................................-0.3V, +6V REF, OUT, FB to GND ................................-0.3V to (VDD + 0.3V) Digital Inputs to GND ...............................................-0.3V to +6V Continuous Current into Any Pin.......................................±20mA Continuous Power Dissipation (TA = +70°C) Plastic DIP (derate 9.09mW/°C above +70°C) ......
PAGE 3
Low-Power, 12-Bit Voltage-Output DACs with Serial Interface (VDD = +5V ±10%, REF = 2.5V, GND = 0V, RL = 5kΩ, CL = 100pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C. Output buffer connected in unity-gain configuration (Figure 8).) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DIGITAL INPUTS DYNAMIC PERFORMANCE Voltage Output Slew Rate SR Output Settling Time To ±1/2LSB, VSTEP = 2.5V Output Voltage Swing Rail-to-rail (Note 2) 0.
PAGE 4
MAX5352/MAX5353 Low-Power, 12-Bit Voltage-Output DACs with Serial Interface ELECTRICAL CHARACTERISTICS: MAX5353 (VDD = +3.15V to +3.6V, REF = 1.25V, GND = 0V, RL = 5kΩ, CL = 100pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C. Output buffer connected in unity-gain configuration (Figure 8).
PAGE 5
Low-Power, 12-Bit Voltage-Output DACs with Serial Interface (VDD = +3.15V to +3.6V, REF = 1.25V, GND = 0V, RL = 5kΩ, CL = 100pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C. Output buffer connected in unity-gain configuration (Figure 8).
PAGE 6
__________________________________________Typical Operating Characteristics (MAX5352 only, VDD = +5V, RL = 5kΩ, CL = 100pF, TA = +25°C, unless otherwise noted.) MAX5352 360 -0.1 -0.2 -0.3 SUPPLY CURRENT (µA) RELATIVE OUTPUT (dB) -8 -12 -0.4 300 280 260 220 200 -60 -20 0.4 1.2 2.0 2.8 3.6 REFERENCE VOLTAGE (V) 4.4 0 2.5M 3M 5 4 3 300 250 200 1 50 -90 4.0 140 OUTPUT FFT PLOT 4.4 -60 -80 5.6 SUPPLY VOLTAGE (V) FREQUENCY (kHz) FULL-SCALE OUTPUT vs.
PAGE 7
Low-Power, 12-Bit Voltage-Output DACs with Serial Interface MAX5352 (continued) DIGITAL FEEDTHROUGH (fSCLK = 100kHz) MAX5352-11 MAX5352-10 MAJOR-CARRY TRANSITION CS 5V/div SCLK, 2V/div OUT, AC COUPLED 100mV/div OUT, AC COUPLED 10mV/div CODE = 2048 10µs/div 2µs/div CS = 5V MAX5352-12 DYNAMIC RESPONSE OUT 1V/div GND 10µs/div GAIN = 2, SWITCHING FROM CODE 0 TO 4020 _______________________________________________________________________________________ 7 MAX5352/MAX5353 ________________________
PAGE 8
____________________________Typical Operating Characteristics (continued) (MAX5353 only, VDD = +3.3V, RL = 5kΩ, CL = 100pF, TA = +25°C, unless otherwise noted.) MAX5353 -0.1 -0.2 -0.3 SUPPLY CURRENT (mA) RELATIVE OUTPUT (dB) -8 -12 280 260 240 -0.4 220 -0.5 200 -60 1.2 1.6 2.0 REFERENCE VOLTAGE (V) -20 100k 2.4 500k 2.5M 400 2.5 2.0 1.5 350 300 250 200 60 100 140 3.0 3.1 3.2 OUTPUT FFT PLOT -60 -80 3.5 3.6 3.7 3.8 FREQUENCY (kHz) FULL-SCALE OUTPUT vs.
PAGE 9
Low-Power, 12-Bit Voltage-Output DACs with Serial Interface MAX5352/MAX5353 _____________________Pin Description FB PIN NAME FUNCTION 1 OUT 2 CS Chip-Select Input. Active low. 3 DIN Serial-Data Input 4 SCLK Serial-Clock Input 5 FB 6 REF Reference Voltage Input 7 GND Ground 8 VDD Positive Power Supply R DAC Output Voltage 2R DAC Output Amplifier Feedback 2R R 2R OUT R 2R 2R MSB REF AGND SHOWN FOR ALL 1s ON DAC Figure 1.
PAGE 10
MAX5352/MAX5353 Low-Power, 12-Bit Voltage-Output DACs with Serial Interface to recall the output state prior to entering shutdown. Exit shutdown mode by either recalling the previous configuration or by updating the DAC with new data. When powering up the device or bringing it out of shutdown, allow 20µs for the output to stabilize.
PAGE 11
Low-Power, 12-Bit Voltage-Output DACs with Serial Interface 16-BIT SERIAL WORD S0 FUNCTION C2 C1 C0 D11...............D0 MSB LSB S0 X 0 0 12 bits of data 0 Load input register; DAC register immediately updated (also exit shutdown). X 0 1 12 bits of data 0 Load input register; DAC register unchanged. X 1 0 XXXXXXXXXXXX X Update DAC register from input register (also exit shutdown; recall previous state).
PAGE 12
MAX5352/MAX5353 Low-Power, 12-Bit Voltage-Output DACs with Serial Interface DIN SCLK CS1 CS2 TO OTHER SERIAL DEVICES CS3 CS CS MAX5352 MAX5353 CS MAX5352 MAX5353 MAX5352 MAX5353 SCLK SCLK SCLK DIN DIN DIN Figure 7. Multiple MAX5352/MAX5353s Sharing Common DIN and SCLK Lines Figure 7 shows a method of connecting several MAX5352/MAX5353s. In this configuration, the clock and the data bus are common to all devices, and separate chip-select lines are used for each IC.
PAGE 13
Low-Power, 12-Bit Voltage-Output DACs with Serial Interface DAC CONTENTS MSB LSB ANALOG OUTPUT 1 1 1 1 1 1 1 1 11 1 1 ( 0 )  2047  +VREF    2048  1 0 0 0 0 0 0 0 00 0 1 ( 0 )  1  +VREF    2048  1 0 0 0 0 0 0 0 00 0 0 ( 0 ) 0V 0 1 1 1 1 1 1 1 11 1 1 ( 0 )  1  -VREF    2048  0 0 0 0 0 0 0 0 00 0 1 ( 0 )  2047  -VREF    2048  0 0 0 0 0 0 0 0 00 0 0 ( 0 ) The MAX5352’s total harmonic distortion plus noise (THD+N) is typically less than -77dB (full-scale code), and the MAX535
PAGE 14
MAX5352/MAX5353 Low-Power, 12-Bit Voltage-Output DACs with Serial Interface +5V/ +3.3V R1 R2 REF AC REFERENCE INPUT +5V/+3.3V VDD +5V/+3.3V 26k MAX495 V+ FB 500mVp-p 10k VDD REF VOUT DAC OUT DAC V- MAX5352 MAX5353 GND OUT R1 = R2 = 10kΩ ±0.1% MAX5352 MAX5353 GND Figure 10. Bipolar Output Circuit Figure 11. AC Reference Input Circuit Grounding and Layout Considerations +5V/ +3.
PAGE 15
Low-Power, 12-Bit Voltage-Output DACs with Serial Interface PART* TEMP.
PAGE 16
8LUMAXD.EPS ___________________________________________Package Information (continued) CDIPS.EPS MAX5352/MAX5353 Low-Power, 12-Bit Voltage-Output DACs with Serial Interface 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.