19-1846; Rev 0; 10/00
+3V/+5V, Serial-Input,
Voltage-Output, 16-Bit DACs
General Description
Features
The MAX5441–MAX5444 are serial-input, voltage-out-
put, 16-bit digital-to-analog converters (DACs) in tiny
µMAX packages, 50% smaller than comparable DACs
in 8-pin SOs. They operate from low +3V (MAX5443/
MAX5444) or +5V (MAX5441/MAX5442) single sup-
plies. They provide 16-bit performance ( 2ꢀSꢁ ꢂIꢀ and
1ꢀSꢁ DIꢀ) over temperature without any adꢃustments.
Unbuffered DAC outputs result in a low supply current
of 120µA and a low offset error of 2ꢀSꢁ.
o Ultra-Small 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 (MAX5441/MAX5442) or +3V
(MAX5443/MAX5444) Single-Supply Operation
The DAC output ranges from 0 to V
. For bipolar
REF
operation, matched scaling resistors are provided in
the MAX5442/MAX5444 for use with an external preci-
sion op amp (such as the MAX400), generating a
o Full 16-Bit Performance Without Adjustments
o Unbuffered Voltage Output Directly Drives 60kΩ
Loads
V
output swing.
REF
o Power-On Reset Circuit Clears DAC Output to
Code 0 (MAX5441/MAX5443) or Code 32768
(MAX5442/MAX5444)
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 (MAX5441/MAX5443) or code 32768 (MAX5442
/MAX5444) 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 (MAX5441/MAX5443) or code 32768
(MAX5442/MAX5444) independent of the serial interface.
Pin Configurations
TOP VIEW
The MAX5441/MAX5443 are available in 8-pin µMAX
packages. The MAX5442/MAX5444 are available in 10-
pin µMAX packages.
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
MAX5441
MAX5443
MAX5442
MAX5444
SCLK
DIN
8
RFB
INV
Applications
High-Resolution Offset and Gain Adꢃustment
ꢂndustrial Process Control
OUT
CLR
SCLK
DIN
7
CLR
OUT
6
µMAX
µMAX
Automated Test Equipment
Functional Diagrams appear at end of data sheet.
Data-Acquisition Systems
Ordering Information
PART
TEMP. RANGE
PIN-PACKAGE
INL (LSB)
SUPPLY (V)
MAX5441ACUA
MAX5441AEUA
MAX5441BCUA
MAX5441BEUA
MAX5442ACUB
MAX544±AEUB
MAX544±BCUB
MAX544±BEUB
0 C to +70 C
-40 C to +85 C
0 C to +70 C
-40 C to +85 C
0 C to +70 C
-40 C to +85 C
0 C to +70 C
-40 C to +85 C
8 µMAX
8 µMAX
8 µMAX
8 µMAX
10 µMAX
10 µMAX
10 µMAX
10 µMAX
±±
±
4
±4
±
±±
4
5
5
5
5
5
5
5
5
±4
Ordering Information continued at end of data sheet.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________ Maxim Integrated Products
1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.