MAX5141 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – +3V/+5V, Serial-Input, Voltage-Output, 14-Bit DACs

19-1849; Rev 1; 5/01
+3V/+5V, Serial-Input,
Voltage-Output, 14-Bit DACs
General Description
The MAX5141–MAX5144 are serial-input, voltage-output,
14-bit digital-to-analog converters (DACs) in tiny µMAX
packages, 50% smaller than comparable DACs in an
8-pin SO. They operate from low +3V (MAX5143/
MAX5144) or +5V (MAX5141/MAX5142) single supplies.
They provide 14-bit performance (±1LSB INL and DNL)
over temperature without any adjustments. The DAC out-
put is unbuffered, resulting in a low supply current of
120µA and a low offset error of 2LSBs.
The DAC output range is 0V to V_REF. For bipolar opera-
tion, matched scaling resistors are provided in the
MAX5142/MAX5144 for use with an external precision op
amp (such as the MAX400), generating a ±V_REF output
swing.
A 16-bit serial word is used to load data into the DAC
latch. The 25MHz, 3-wire serial interface is compatible
with SPI™/QSPI™/MICROWIRE™, and can interface
directly with optocouplers for applications requiring isola-
tion. A power-on reset circuit clears the DAC output to
code 0 (MAX5141/MAX5143) or code 8192 (MAX5142/
MAX5144) when power is initially applied.
A logic low on CLR asynchronously clears the DAC out-
put to code 0 (MAX5141/MAX5143) or code 8192
(MAX5142/MAX5144), independent of the serial interface.
The MAX5141/MAX5143 are available in 8-pin µMAX
packages and the MAX5142/MAX5144 are available in
10-pin µMAX packages.
Applications
High-Resolution and Gain Adjustment
Industrial Process Control
Automated Test Equipment
Data-Acquisition Systems
Features
o Miniature (3mm x 5mm) 8-Pin µMAX Package
o Low 120µA Supply Current
o Fast 1µs Settling Time
o 25MHz SPI/QSPI/MICROWIRE-Compatible Serial
Interface
o V_REF Range Extends to V_DD
o +5V (MAX5141/MAX5142) or +3V
(MAX5143/MAX5144) Single-Supply Operation
o Full 14-Bit Performance Without Adjustments
o Unbuffered Voltage Output Directly Drives 60kΩ
Loads
o Power-On Reset Circuit Clears DAC Output to
Code 0 (MAX5141/MAX5143) or Code 8192
(MAX5142/MAX5144)
o Schmitt-Trigger Inputs for Direct Optocoupler
Interface
o Asynchronous CLR
TOP VIEW
Pin Configurations
REF 1
CS 2
SCLK 3
DIN 4
MAX5141
MAX5143
µMAX
8 GND
7 VDD
6 OUT
5 CLR
REF 1
CS 2
SCLK 3
DIN 4
CLR 5
MAX5142
MAX5144
µMAX
10 GND
9 V_DD
8 RFB
7 INV
6 OUT
PART
M A X5 1 4 1E U A
M A X5 1 4 2E U B
M A X5 1 4 3E U A
M A X5 1 4 4E U B
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN - PAC K A GE
8 µMAX
10 µMAX
8 µMAX
10 µMAX
Ordering Information
INL (LSB)
±1
±1
±1
±1
SU PPL Y
RANGE (V)
5
5
3
3
OUTPUT SWING
Unipolar
Bipolar
Unipolar
Bipolar
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
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