19-1849; Rev 1; 5/01
+3V/+5V, Serial-Input,
Voltage-Output, 14-Bit DACs
General Description
Features
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 ( 1ꢀSꢁ ꢂIꢀ and DIꢀ)
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 2ꢀSꢁs.
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
Range Extends to V
DD
REF
o +5V (MAX5141/MAX5142) or +3V
(MAX5143/MAX5144) Single-Supply Operation
The DAC output range is 0V to V
For bipolar opera-
REF.
tion, matched scaling resistors are provided in the
MAX5142/MAX5144 for use with an external precision op
o Full 14-Bit Performance Without Adjustments
o Unbuffered Voltage Output Directly Drives 60kΩ
amp (such as the MAX400), generating a
swing.
V
REF
output
Loads
o Power-On Reset Circuit Clears DAC Output to
Code 0 (MAX5141/MAX5143) or Code 8192
(MAX5142/MAX5144)
A 16-bit serial word is used to load data into the DAC
latch. The 25MHz, 3-wire serial interface is compatible
with SPꢂ™/QSPꢂ™/MꢂCROWꢂRE™, 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.
o Schmitt-Trigger Inputs for Direct Optocoupler
Interface
o Asynchronous CLR
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.
Pin Configurations
The MAX5141/MAX5143 are available in 8-pin µMAX
packages and the MAX5142/MAX5144 are available in
10-pin µMAX packages.
TOP VIEW
GND
REF
CS
1
2
3
4
5
10
9
GND
1
2
3
4
8
7
6
5
REF
CS
V
DD
V
DD
Applications
High-Resolution and Gain Adjustment
ꢂndustrial Process Control
MAX5141
MAX5143
MAX5142
MAX5144
SCLK
DIN
8
RFB
INV
OUT
CLR
SCLK
DIN
7
CLR
OUT
6
Automated Test Equipment
µMAX
µMAX
Data-Acquisition Systems
Ordering Information
SUPPLY
PART
TEMP. RANGE
PIN-PACKAGE
INL (LSB)
OUTPUT SWING
RANGE (V)
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
8 µMAX
10 µMAX
8 µMAX
1
1
1
1
5
5
3
3
Unipolar
Bipolar
Unipolar
Bipolar
MAX5141EUA
MAX5142EUB
MAX5143EUA
MAX5144EUB
10 µMAX
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.