MAX5742AUB-T Maxim Integrated, MAX5742AUB-T Datasheet

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MAX5742AUB-T

Manufacturer Part Number
MAX5742AUB-T
Description
Digital to Analog Converters - DAC
Manufacturer
Maxim Integrated
Datasheet

Specifications of MAX5742AUB-T

Number Of Converters
4
Number Of Dac Outputs
4
Resolution
12 bit
Interface Type
QSPI, SPI, Serial (3-Wire, Microwire)
Settling Time
10 us
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Package / Case
UMAX
Minimum Operating Temperature
- 40 C
Output Type
Voltage
Supply Voltage - Max
5.5 V
Supply Voltage - Min
2.7 V
Voltage Reference
External
The MAX5742 quad, 12-bit, low-power, buffered volt-
age-output, digital-to-analog converter (DAC) is pack-
aged in a space-saving 10-pin µMAX package (5mm
3mm). The wide supply voltage range of +2.7V to
+5.5V and 229µA supply current accommodates low-
power and low-voltage applications. DAC outputs
employ on-chip precision output amplifiers that swing
Rail-to-Rail
voltage range from 0 to V
ence input is high impedance, further reducing the sys-
tem’s total power consumption.
The 20MHz, 3-wire SPI™, QSPI™, MICROWIRE™ and
DSP-compatible serial interface saves board space
and reduces the complexity of opto- and transformer-
isolated applications. The MAX5742 on-chip power-on
reset (POR) circuit resets the DAC outputs to zero and
loads the output with a 100k
provides additional safety for applications that drive
valves or other transducers that need to be off on
power-up. The MAX5742’s software-controlled power-
down reduces supply current to less than 0.3µA and
provides software-selectable output loads (1k , 100k ,
or high impedance) while in power-down. The MAX5742
is specified over the -40°C to +125°C automotive tem-
perature range.
19-2122; Rev 2; 7/03
Functional Diagram appears at end of data sheet.
Rail-to-Rail is a registered trademark of Nippon Motorola, Inc.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor, Corp.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Automatic Tuning
Gain and Offset Adjustment
Power Amplifier Control
Process Control I/O Boards
Battery-Powered Instruments
VCO Control
®
. The MAX5742’s reference input accepts a
12-Bit, Low-Power, Quad, Voltage-Output
________________________________________________________________ Maxim Integrated Products
General Description
DD
. In power-down the refer-
resistor to ground. This
Applications
DAC with Serial Interface
o Ultra-Low Power Consumption
o Wide +2.7V to +5.5V Single-Supply Range
o 10-Pin µMAX Package
o 0.3µA Power-Down Current
o Guaranteed 12-Bit Monotonicity (±1LSB DNL)
o Safe Power-Up Reset to Zero Volts at DAC Output
o Three Software-Selectable Power-Down
o Fast 20MHz 3-Wire SPI, QSPI, and MICROWIRE-
o Rail-to-Rail Output Buffer Amplifiers
o Schmitt-Triggered Logic Inputs for Direct
o Wide -40°C to +125°C Operating Temperature
MAX5742EUB
MAX5742AUB
Impedances (100k , 1k , Hi-Z)
Compatible Serial Interface
Interfacing to Optocouplers
Range
TOP VIEW
PART
229µA at V
271µA at V
SCLK
GND
V
DIN
CS
DD
DD
DD
-40°C to +125°C
1
2
3
4
5
-40°C to +85°C
TEMP RANGE
= +3.6V
= +5.5V
Ordering Information
MAX5742
MAX
Pin Configuration
10
9
8
7
6
OUTD
OUTC
OUTB
OUTA
REF
10 µMAX
10 µMAX
PIN-PACKAGE
Features
1

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MAX5742AUB-T Summary of contents

Page 1

... Fast 20MHz 3-Wire SPI, QSPI, and MICROWIRE- Compatible Serial Interface o Rail-to-Rail Output Buffer Amplifiers o Schmitt-Triggered Logic Inputs for Direct Interfacing to Optocouplers o Wide -40°C to +125°C Operating Temperature Range Applications PART MAX5742EUB MAX5742AUB TOP VIEW Features = +3. +5.5V DD Ordering Information TEMP RANGE PIN-PACKAGE -40° ...

Page 2

Low-Power, Quad, Voltage-Output DAC with Serial Interface ABSOLUTE MAXIMUM RATINGS V to GND ..............................................................-0.3V to +6V DD OUT_, SCLK, DIN, CS, REF to GND...............-0 Maximum Continuous Current Into Any Pin......................±50mA Continuous Power Dissipation (T = +70°C) A ...

Page 3

Low-Power, Quad, Voltage-Output ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.5V, GND = REF V = +5V +25°C PARAMETER SYMBOL DIGITAL INPUTS (SCLK, DIN, CS) Input High Voltage Input Low Voltage Input ...

Page 4

Low-Power, Quad, Voltage-Output DAC with Serial Interface __________________________________________Typical Operating Characteristics ( +25°C, unless otherwise noted.) REF DD A INTEGRAL NONLINEARITY vs. CODE + +5V DD ...

Page 5

Low-Power, Quad, Voltage-Output ( +25°C, unless otherwise noted.) REF DD A WORST-CASE INL AND DNL vs. TEMPERATURE MAXIMUM INL MAXIMUM DNL MINIMUM DNL -8 MINIMUM INL -12 -16 ...

Page 6

Low-Power, Quad, Voltage-Output DAC with Serial Interface ( +25°C, unless otherwise noted.) REF DD A FULL-SCALE SETTLING TIME (V = +5V s/div HALF-SCALE SETTLING TIME (V = +3V s/div EXITING ...

Page 7

Low-Power, Quad, Voltage-Output ____________________________Typical Operating Characteristics (continued +25°C, unless otherwise noted.) REF DD A DIGITAL-TO-ANALOG GLITCH IMPULSE ( s/div DIGITAL-TO-ANALOG GLITCH IMPULSE ( s/div POWER-ON RESET, SLOW RISE TIME ...

Page 8

Low-Power, Quad, Voltage-Output DAC with Serial Interface ( +25°C, unless otherwise noted.) REF DD A POWER-ON RESET, SLOW RISE-TIME ( s/div CLOCK FEEDTHROUGH (V = +3V s/div LINE TRANSIENT RESPONSE ...

Page 9

Low-Power, Quad, Voltage-Output PIN NAME CS 1 Chip-Select Input 2 SCLK Serial-Clock Input 3 V Power-Supply Input DD 4 GND Ground 5 DIN Serial Data Input 6 REF External Reference Voltage Input DAC Voltage Outputs. Power-on reset sets DAC ...

Page 10

Low-Power, Quad, Voltage-Output DAC with Serial Interface Table 1. Power-Down Mode Control EXTENDED DATA BITS CONTROL D11– ...

Page 11

Low-Power, Quad, Voltage-Output CONTENTS OF SHIFT REGISTER D15 (MSB D11 Figure 1. 16-Bit Input Word SCLK DIN CSPWH CSS CS Figure 2. Timing Diagram Applications ...

Page 12

Low-Power, Quad, Voltage-Output DAC with Serial Interface Table 2. Serial-Interface Programming Commands CONTROL DATA BITS D11– ...

Page 13

Low-Power, Quad, Voltage-Output Table 3. Unipolar Code Table DAC CONTENTS ANALOG OUTPUT 1111 1111 1111 1000 0000 0001 1000 0000 0000 0111 1111 1111 0000 0000 0001 0000 0000 0000 Chip Information TRANSISTOR COUNT: 14,458 PROCESS: BiCMOS ______________________________________________________________________________________ DAC ...

Page 14

Low-Power, Quad, Voltage-Output DAC with Serial Interface V DD INPUT DAC REGISTER A REGISTER A INPUT DAC REGISTER B REGISTER B INPUT DAC REGISTER C REGISTER C INPUT DAC REGISTER D REGISTER D INPUT CONTROL LOGIC AND SHIFT REGISTER ...

Page 15

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 © 2003 Maxim Integrated Products ...

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