MAX5154 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – Low-Power, Dual, 12-Bit Voltage-Output DACs with Serial Interface

19-1316; Rev 1; 12/97
Low-Power, Dual, 12-Bit Voltage-Output DACs
with Serial Interface
_______________General Description ____________________________Features
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.
o 12-Bit Dual DAC with Internal Gain of +2V/V
o Rail-to-Rail Output Swing
o 12µs Settling Time
o Single-Supply Operation: +5V (MAX5154)
+3V (MAX5155)
o Low Quiescent Current: 500µA (normal operation)
2µA (shutdown mode)
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.
o SPI/QSPI and Microwire Compatible
o Available in Space-Saving 16-Pin QSOP Package
o Power-On Reset Clears Registers and DACs
to Zero
o Adjustable Output Offset
______________Ordering Information
PART
TEMP. RANGE
MAX5154ACPE 0°C to +70°C
MAX5154BCPE 0°C to +70°C
PIN-PACKAGE
INL
(LSB)
16 Plastic DIP ±1/2
16 Plastic DIP ±1
________________________Applications
Industrial Process Control Remote Industrial Controls
Digital Offset and Gain
Adjustment
Microprocessor-
Controlled Systems
MAX5154ACEE 0°C to +70°C 16 QSOP
MAX5154BCEE 0°C to +70°C 16 QSOP
Ordering Information continued at end of data sheet.
Pin Configuration appears at end of data sheet.
±1/2
±1
Motion Control
Automatic Test
Equipment (ATE)
_________________________________________________________Functional Diagram
DOUT CL
PDL
DECODE
CONTROL
16-BIT
SHIFT
REGISTER
SR
CONTROL
LOGIC
OUTPUT
DGND AGND ^VDD
REFA
INPUT
REG A
INPUT
REG B
DAC
REG A
DAC A
MAX5154
MAX5155
DAC
REG B
DAC B
OSA
R
R
OUTA
OSB
R
R
OUTB
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.
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