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CS3301A
2.4 Connection Diagram
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
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.
3
2
GPIO (x3)
GPIO (x2)
GPIO
MCLK
To CS5376A
Digital Control
GAIN
MUX
PWDN
CLK
VA+
0.1 μ F
VA+
CS3301A
Differential
VD
VD
0.01 μ F
VA+
0.1 μ F
VD
0.01 μ F
Amplifier
VA-
VA-
GND
VA+
VD
0.1 μ F
INA+
INA-
INB-
INB+
OUTR-
OUTF-
OUTF+
OUTR+
MDATA1
680
INR+
INF+
MFLAG1
PWDN1
680
680
0.02 μ F
C0G
0.02 μ F
C0G
INF-
Differential
Sensor
680
INR-
VREF+
MCLK
MSYNC
Differential
CS4373A
Test DAC
2.5 V
Reference
680
VREF-
CS5372A
? Σ Modulator
Sensor
INR-
INF-
OFST
680
680
0.02 μ F
C0G
0.02 μ F
C0G
INF+
680
INR+
MDATA2
MFLAG2
INA+
INA-
INB-
INB+
OUTR-
OUTF-
OUTF+
OUTR+
PWDN2
VA+
VA+
VD
VD
0.1 μ F
CS3301A
Differential
0.01 μ F
VA-
VA-
GND
Amplifier
VA-
VA-
GND
0.1 μ F
0.1 μ F
GAIN
3
MUX
2
PWDN
CLK
MCLK
GPIO
GPIO (x2)
GPIO (x3)
To CS5376A
Digital Control
Figure 5. CS3301A Amplifier Connections
12
DS757F1
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