Datasheet

MAX9934
High-Precision, Low-Voltage, Current-Sense Amplifier
with Current Output and Chip Select for Multiplexing
17
Maxim Integrated
CS3
CS1
CS2
MICROCONTROLLER
TO EXTERNAL
REFERENCE
VOLTAGE
V
REF
CS
R
R
OUT1
V
OUT
V
CC
= 3.3V
0.1µF
V
IN1
MAX9934
CS
OUT2
V
CC
= 3.3V
0.1µF
V
IN2
CS
OUT3
V
CC
= 3.3V
0.1µF
V
IN3
MAX9934
MAX9934
R
OUT
= R/2
10kΩ
(OPTIONAL)
10kΩ
ADC
Figure 8. Multiplexed, Strain-Gauge Amplifier Operation