Specifications
125Motor Control: Featured Products
Benefits
• Simplicity of DC motor speed control
via digital interface
• Easy design reuse due to highly
scalable outputs
• Dual outputs with individual range
settings provide course and fine
motor speed control
Sink/Source Current DAC Adjusts Power-
Supply Output Voltage to Vary Supply to
Motors
DS4432
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 programmable using the I
2
C interface. The current DAC
outputs power up in a high-impedance state. Full-scale range for each DAC is set
by external resistors providing highly scalable outputs. Fine and course granularity
can be achieved by combining the two outputs when set for dierent ranges.
DC-DC
CONVERTER
FB
OUT
SDA
SCL
OUT0
OUT0
GND
R
FS0
4.7kΩ4.7kΩ
V
CC
V
CC
SUPPLY TO MOTOR
FS0
R
FS1
FS0
R
0B
R
0A
DS4432
Featured Products
Typical operating circuit of the DS4432.