CS3301A
2.4
Connection Diagram
shows differential sensors and test DAC inputs, and
analog outputs with anti-alias RC components;
power supply connections including recommended
bypassing; and digital control connections back to
the CS5376A GPIO pins.
Figure 5 on page 12 shows a connection diagram
for the CS3301A amplifier when used with the
CS5372A dual ∆Σ modulator, the CS4373A Test
DAC, and the CS5376A digital filter. The diagram
GPIO (x3)
3
GPIO (x2)
To CS5376A
GPIO
2
Digital Control
MCLK
GAIN
MUX
PWDN
CLK
VA+
VD
VA+
VD
VA+
VA-
VD
0.1µF
0.01µF
0.1µF
CS3301A
Differential
Amplifier
0.01µF
VA-
VA+
VD
GND
0.1µF
INA+ INA-
INB- INB+
OUTR- OUTF- OUTF+ OUTR+
MDATA1
MFLAG1
PWDN1
680
INR+
INF+
680
680
0.02µF
C0G
0.02µF
C0G
INF-
INR-
Differential
Sensor
MCLK
MSYNC
680
VREF+
VREF-
CS4373A
Test DAC
2.5 V
Reference
CS5372A
∆Σ Modulator
Differential
Sensor
680
INR-
INF-
OFST
680
680
0.02µF
C0G
0.02µF
C0G
INF+
INR+
MDATA2
MFLAG2
PWDN2
680
INA+ INA-
VA+
INB- INB+
OUTR- OUTF- OUTF+ OUTR+
VD
VA+
VD
VA-
GND
0.1µF
CS3301A
Differential
Amplifier
0.01µF
VA-
VA-
0.1µF
VA-
GND
CLK
0.1µF
GAIN
MUX
PWDN
MCLK
GPIO
GPIO (x2)
GPIO (x3)
To CS5376A
Digital Control
2
3
Figure 5. CS3301A Amplifier Connections
12
DS757F1
CIRRUS [ CIRRUS LOGIC ]
