19-1316; Rev 1; 12/97
Low-Power, Dual, 12-Bit Voltage-Output DACs
with Serial Interface
_______________General Description
The MAX5154/MAX5155 low-power, serial, voltage-out-
put, dual 12-bit digital-to-analog converters (DACs)
consume only 500µA from a single +5V (MAX5154) or
+3V (MAX5155) supply. These devices feature Rail-to-
Rail
®
output swing and are available in a space-saving
16-pin QSOP package. To maximize the dynamic
range, the DAC output amplifiers are configured with an
internal gain of +2V/V.
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
with a 16-bit serial word. Additional features include
programmable shutdown (2µA), hardware-shutdown
lockout (PDL), a separate reference voltage input for
each DAC that accepts AC and DC signals, and an
active-low clear input (CL) that resets all registers and
DACs to zero. These devices provide a programmable
logic pin for added functionality, and a serial-data out-
put pin for daisy chaining.
____________________________Features
o
o
o
o
o
o
o
o
o
12-Bit Dual DAC with Internal Gain of +2V/V
Rail-to-Rail Output Swing
12µs Settling Time
Single-Supply Operation: +5V (MAX5154)
+3V (MAX5155)
Low Quiescent Current: 500µA (normal operation)
2µA (shutdown mode)
SPI/QSPI and Microwire Compatible
Available in Space-Saving 16-Pin QSOP Package
Power-On Reset Clears Registers and DACs
to Zero
Adjustable Output Offset
MAX5154/MAX5155
______________Ordering Information
PART
MAX5154ACPE
MAX5154BCPE
MAX5154ACEE
MAX5154BCEE
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
16 Plastic DIP
16 Plastic DIP
16 QSOP
16 QSOP
INL
(LSB)
±1/2
±1
±1/2
±1
________________________Applications
Industrial Process Control
Digital Offset and Gain
Adjustment
Motion Control
Remote Industrial Controls
Microprocessor-
Controlled Systems
Automatic Test
Equipment (ATE)
Ordering Information continued at end of data sheet.
Pin Configuration appears at end of data sheet.
_________________________________________________________Functional Diagram
DOUT
CL
PDL
DGND
AGND
V
DD
REFA
OSA
DECODE
CONTROL
R
R
INPUT
REG A
DAC
REG A
DAC A
R
OUTA
OSB
16-BIT
SHIFT
REGISTER
SR
CONTROL
MAX5154
MAX5155
LOGIC
OUTPUT
SCLK
UPO
INPUT
REG B
DAC
REG B
DAC B
R
OUTB
CS
DIN
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.
1
________________________________________________________________
Maxim Integrated Products
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.
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
