MAX5104 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – Low-Power, Dual, Voltage-Output, 12-Bit DAC with Serial Interface

19-1587; Rev 0; 11/99
Low-Power, Dual, Voltage-Output, 12-Bit DAC
with Serial Interface
General Description
The MAX5104 low-power, serial, voltage-output, dual
12-bit digital-to-analog converter (DAC) consumes only
500µA from a single +5V supply. This device features
Rail-to-Rail® output swing and is 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™/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 registers to be updated
independently or simultaneously with a 16-bit serial
word. Additional features include programmable power-
down (2µA), hardware power-down 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 output pin for
daisy chaining.
________________________Applications
Industrial Process Control
Remote Industrial Controls
Digital Offset and Gain Adjustment
Microprocessor-Controlled Systems
Motion Control
Automatic Test Equipment (ATE)
____________________________Features
o 12-Bit Dual DAC with Internal Gain of +2V/V
o Rail-to-Rail Output Swing
o 12µs Settling Time
o +5V Single-Supply Operation
o Low Quiescent Current
500µA (normal operation)
2µA (power-down mode)
o SPI/QSPI/MICROWIRE Compatible
o 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
PIN-
PACKAGE
MAX5104CEE 0°C to +70°C
MAX5104EEE -40°C to +85°C
16 QSOP
16 QSOP
Pin Configuration appears at end of data sheet.
INL
(LSB)
±4
±4
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
MAX5104
DAC
REG B
DAC B
OSA
R
R
OUTA
OSB
R
R
OUTB
CS DIN SCLK UPOH
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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