English
Language : 

MAX5156 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – Low-Power, Dual, 12-Bit Voltage-Output DACs with Configurable Outputs
19-1317; Rev 1; 12/97
Low-Power, Dual, 12-Bit Voltage-Output DACs
with Configurable Outputs
_______________General Description
The MAX5156/MAX5157 low-power, serial, voltage-out-
put, dual 12-bit digital-to-analog converters (DACs)
consume only 500µA from a single +5V (MAX5156) or
+3V (MAX5157) supply. These devices feature Rail-to-
Rail® output swing and are available in space-saving
16-pin QSOP and DIP packages. Access to the invert-
ing input allows for specific gain configurations, remote
sensing, and high output current capability, making
these devices ideally suited for industrial process con-
trols. These devices are also well suited for digitally
programmable (4–20mA) current loops.
The 3-wire serial interface is SPI™/QSPI™ and
Microwire™ compatible. Each DAC has a double-
buffered input organized as an input register followed
by a DAC register, which allows the input and DAC reg-
isters to be updated independently or simultaneously.
Additional features include a programmable shutdown
(2µA), hardware-shutdown lockout, a separate voltage
reference for each DAC, power-on reset, and an active-
low clear input (CL) that resets all registers and DACs to
zero. The MAX5156/MAX5157 provide a programmable
logic output pin for added functionality, and a serial-
data output pin for daisy chaining.
________________________Applications
Industrial Process Control
Digital Offset and Gain
Adjustment
Remote Industrial Controls
Motion Control
Digitally Programmable
4–20mA Current Loops
Automatic Test Equipment
____________________________Features
o 12-Bit Dual DAC with Configurable Output
Amplifier
o Single-Supply Operation: +5V (MAX5156)
+3V (MAX5157)
o Rail-to-Rail Output Swing
o Low Quiescent Current: 500µA (normal operation)
2µA (shutdown mode)
o Power-On Reset Clears DAC Outputs to Zero
o SPI/QSPI and Microwire Compatible
o Space-Saving 16-Pin QSOP Package
_______________Ordering Information
PART
TEMP. RANGE
MAX5156ACPE
MAX5156BCPE
MAX5156ACEE
MAX5156BCEE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
INL
(LSB)
16 Plastic DIP ±1/2
16 Plastic DIP ±1
16 QSOP
±1/2
16 QSOP
±1
Ordering Information continued at end of data sheet.
Pin Configuration appears at end of data sheet.
_________________________________________________________Functional Diagram
DOUT CL
PDL
DGND AGND VDD
REFA
DECODE
INPUT
REG A
DAC
REG A
DAC A
OUTA
CONTROL
16-BIT
SHIFT
REGISTER
MAX5156
FBA
MAX5157
INPUT
DAC
DAC B
OUTB
LOGIC
REG B
REG B
OUTPUT
SR
FBB
CONTROL
CS DIN SCLK UPO
REFB
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd. SPI and QSPI are trademarks of Motorola, Inc.
Microwire is a trademark of National Semiconductor Corp.
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.