Rainbow Electronics DS4412 - Manual

General Description
The DS4412 contains two I 2 C adjustable-current DACs
that are each capable of sinking or sourcing current. Each
output has 15 sink and 15 source settings that are pro-
grammed by I
2 C interface. The full-scale range and step
size of each output is determined by an external resistor
that can adjust the output current over a 4:1 range.
The output pins, OUT0 and OUT1, 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 500µA to 2mA
♦ Full-Scale Range for Each DAC Determined by
External Resistors
♦ 15 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 Operation
DS4412
Dual-Channel, I
2
C Adjustable
Sink/Source Current DAC
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
DS4412
Typical Operating Circuit
Ordering Information
Rev 0; 9/07
________________________________________________________________ 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.
+ Denotes a lead-free package.
T&R = Tape and reel.
PART TEMP RANGE PIN-PACKAGE
DS4412U+ -40°C to +85°C 8 μSOP
DS4412U+T&R -40°C to +85°C 8 μSOP
1
2
3
4
8
7
6
5
V CC
OUT1
OUT0
FS0 GND
FS1
SCL
SDA
μSOP
TOP VIEW
+
DS4412
Pin Configuration