Owner's manual

CS3302A
CS3302A
DS765PP1
DS765PP1 13
2.4 Connection Diagram
Figure 5 shows a connection diagram for the CS3302A amplifier when used with the CS5372A dual ∆Σ
modulator, the CS4373A test DAC and the CS5376A digital filter. The diagram shows differential sensors,
a test DAC, and analog outputs with anti-alias capacitors; power supply connections including recom-
mended bypassing; and digital control connections back to the CS5376A GPIO pins.
CS5372A
∆Σ Modulator
0.02µF
C0G
0.02
C0G
0.02
C0G
0.02
C0G
INF+
INR+
INF-
INR-
INF-
INR-
INF+
INR+
VREF+
VREF-
VA+
VA-
VD
GND
MDATA1
MFLAG1
MDATA2
MFLAG2
MCLK
MSYNC
PWDN1
OFST
PWDN2
LPWR
CS3302A
Differential
Amplifier
INB+INA+ INA- INB- OUTF-OUTR- OUTF+ OUTR+
VA+
VA-
VD
GND
GAIN MUX PWDN
CS3302A
Differential
Amplifier
INB+INA+ INA- INB- OUTF-OUTR- OUTF+ OUTR+
VA+
VA-
VD
GND
GAIN MUX PWDN
VA-
0.1
VA+
0.1
VA-
0.1
VA+
0.1
VD
0.01
VD
0.01
GPIO
GPIO (x2)
GPIO (x3)
GPIO
GPIO (x2)
GPIO (x3)
Differential
Sensor
Differential
Sensor
Test
DAC
3
2
3
2
To CS5376A
Digital Control
To CS5376A
Digital Control
2.5 V
Reference
VA+
0.1 0.01
VD
VA-
0.1
GUARD
GUARD
CS4373A
680
680
680
680
680
680
680
680
µF
µF
µF µF
µF
µF
µF
µF
µF
µF µF
µF
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Figure 5. CS3302A Amplifier Connections
A
A