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PDF DS4432 Data sheet ( Hoja de datos )
| Número de pieza | DS4432 | |
| Descripción | Sink/Source Current DAC | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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Rev 0; 12/08
www.DataSheet4U.com
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
FB
R0A
R0B
VOUT1
OUT
DC-DC
CONVERTER
FB
R1A
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.
1 page  
www.DataSheet4U.com
Dual-Channel, I2C, 7-Bit Sink/Source
Current DAC
Typical Operating Characteristics (continued)
(Applies to OUT0 and OUT1. VCC = 2.7V to 5.0V, SDA = SCL = VCC, TA = +25°C, and no loads on OUT0, OUT1, FS0, or FS1, unless
otherwise noted.)
INTEGRAL LINEARITY
1.0
RANGE FOR THE 50μA TO 200μA CURRENT
0.8 SOURCE AND SINK RANGE.
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
25 50 75 100 125
SETTING (DEC)
DIFFERENTIAL LINEARITY
1.0
RANGE FOR THE 50μA TO 200μA CURRENT
0.8 SOURCE AND SINK RANGE.
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
25 50 75 100 125
SETTING (DEC)
Block Diagram
SDA SCL
VCC
VCC
F8h
SOURCE OR
SINK MODE
GND
I2C-COMPATIBLE
SERIAL INTERFACE
DS4432
CURRENT
DAC0
F9h
127 POSITIONS
EACH FOR SINK
AND SOURCE
MODE
CURRENT
DAC1
FS0
RFS0
OUT0
FS1
RFS1
OUT1
_______________________________________________________________________________________ 5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet DS4432.PDF ] | |
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