Rainbow Electronics DS4432 - Manual

DS4432
Dual-Channel, I
2
C, 7-Bit Sink/Source
Current DAC
________________________________________________________________ Maxim Integrated Products 1
Rev 0; 12/08
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.
General Description
The DS4432 contains two I 2 C 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
I
2 C 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
♦ I
2 C-Compatible Serial Interface
♦ Low Cost
♦ Small Package (8-Pin µSOP)
♦ -40°C to +85°C Temperature Range
♦ 2.7V to 5.5V Operating Range
DC-DC
CONVERTER
FB
OUT
SDA
SCL
OUT0
OUT1
GND
R FS0 R FS1
4.7k Ω 4.7k Ω V CC
V CC V OUT0
FS0 FS1
R 0B
R
0A
DC-DC
CONVERTER
FB
OUT
V
OUT1
R 1B
R
1A
DS4432
Typical Operating Circuit
Ordering Information
+ Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
PART TEMP RANGE PIN-PACKAGE
DS4432U+ -40°C to +85°C 8 μSOP
DS4432U+T&R -40°C to +85°C 8 μSOP
TOP VIEW
+
DS4432
μSOP
2 7 OUT1 SCL
1 8 V CC SDA
OUT0 FS1 3 6
FS0 GND 4 5
Pin Configuration