MAX5544 Datasheet, PDF (1/8 Pages) Maxim Integrated Products – Low-Cost, +5V, Serial-Input, Voltage-Output, 14-Bit DAC

19-1571; Rev 0; 12/99
Low-Cost, +5V, Serial-Input,
Voltage-Output, 14-Bit DAC
General Description
The MAX5544 serial-input, voltage-output, 14-bit
monotonic digital-to-analog converter (DAC) operates
from a single +5V supply. The DAC output is
unbuffered, resulting in low 0.3mA supply current and
low 1LSB offset error. The DAC output range is 0V to
V_REF. The DAC latch accepts a 16-bit serial word. A
power-on reset circuit clears the DAC output to 0V
(unipolar mode) when power is initially applied.
The 10MHz 3-wire serial interface is SPI™/QSPI™/
MICROWIRE™ compatible and interfaces directly with
optocouplers for applications requiring isolation. The
MAX5544 is available in an 8-pin SO package.
Features
o Full 14-Bit Performance Without Adjustments
o +5V Single-Supply Operation
o Low Power: 1.5mW
o 1µs Settling Time
o Unbuffered Voltage Output Directly Drives 60kΩ
Loads
o SPI/QSPI/MICROWIRE-Compatible Serial Interface
o Power-On Reset Circuit Clears DAC Output to 0V
(unipolar mode)
o Schmitt Trigger Inputs for Direct Optocoupler
Interface
Applications
High-Resolution Offset and Gain Adjustment
Industrial Process Control
Automated Test Equipment
Data Acquisition Systems
PART
MAX5544CSA
MAX5544ESA
Ordering Information
TEMP. RANGE
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
8 SO
8 SO
TOP VIEW
Pin Configuration
OUT 1
AGND 2
REF 3
CS 4
MAX5544
8 V_DD
7 DGND
6 DIN
5 SCLK
SO
Functional Diagram
MAX5544
REF
V_DD
14-BIT DAC
CS
DIN
SCLK
CONTROL
LOGIC
16-BIT DATA LATCH
SERIAL INPUT REGISTER
DGND
OUT
AGND
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
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