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DS4432 Datasheet, PDF (1/9 Pages) Maxim Integrated Products – Dual-Channel, I2C, 7-Bit Sink/Source Current DAC
Rev 0; 12/08
Dual-Channel, I2C, 7-Bit Sink/Source
Current DAC
General Description
The DS4432 contains two I2C programmable current
DACs that are each capable of sinking and sourcing
current up to 200µA. Each DAC output has 127 sink
and 127 source settings that are programmed using the
I2C interface. The current DAC outputs power up in a
high-impedance state.
Applications
Power-Supply Adjustment
Power-Supply Margining
Adjustable Current Sink or Source
Features
♦ Two Current DACs
♦ Full-Scale Current 50µA to 200µA
♦ Full-Scale Range for Each DAC Determined by
External Resistors
♦ 127 Settings Each for Sink and Source Modes
♦ I2C-Compatible Serial Interface
♦ Low Cost
♦ Small Package (8-Pin µSOP)
♦ -40°C to +85°C Temperature Range
♦ 2.7V to 5.5V Operating Range
Pin Configuration
TOP VIEW
SDA 1 +
SCL 2
FS1 3
DS4432
GND 4
μSOP
8 VCC
7 OUT1
6 OUT0
5 FS0
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
DS4432U+
-40°C to +85°C
8 μSOP
DS4432U+T&R -40°C to +85°C
8 μSOP
+Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
4.7kΩ
4.7kΩ
SDA
SCL
GND
VCC
DS4432
OUT0
OUT1
FS0
RFS0
FS1
RFS1
Typical Operating Circuit
VCC
VOUT0
OUT
DC-DC
CONVERTER
R0A
FB
R0B
VOUT1
OUT
DC-DC
CONVERTER
R1A
FB
R1B
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.