CS3301_07 Datasheet, PDF (13/16 Pages) Cirrus Logic – Low-noise, Programmable Gain, Differential Amplifier

CS3301
2.4 Connection Diagram
Figure 4 shows a connection diagram for the
CS3301 amplifier when used with the CS5372 dual
∆Σ modulator and CS5376A digital filter. The dia-
gram shows differential sensors, a test DAC, and
analog outputs with anti-alias capacitors; power
supply connections including recommended by-
passing; and digital control connections back to the
CS5376A GPIO pins.
VA+
0.1µF
VA-
0.1µF
Differential
Sensor
Differential
Sensor
VA+
0.1µF
VA-
0.1µF
3
2
GPIO (x3)
GPIO (x2)
GPIO
GPIO
MCLK
To CS5376A
Digital Control
VA+
GAIN
VA-
INA+ INA-
MUX
PWDN LPWR CLK
VD
INB-
CS3301
Differential
Amplifier
INB+
OUTR-
OUTF-
DGN
D
OUTF+ OUTR+
VD
0.01µF
VA+
0.1µF
VA+
0.02µF
C0G
0.02µF
C0G
INR+
INF+
INF-
INR-
VD
0.01µF
VD
MDATA1
MFLAG1
PWDN1
MCLK
MSYNC
CS4373A
Test DAC
2.5 V
Reference
VREF+
CS5372
∆Σ Modulator
VREF-
INA+ INA-
VA+
VA-
GAIN
0.02µF
C0G
0.02µF
C0G
INB- INB+
OUTR- OUTF- OUTF+ OUTR+
VD
CS3301
Differential
Amplifier
MUX
PWDN LPWR
DGN
D
CLK
VD
0.01µF
INR-
INF-
INF+
INR+
VA-
VA-
0.1µF
LPWR
OFST
MDATA2
MFLAG2
PWDN2
DGND
2
3
MCLK
GPIO
GPIO
GPIO (x2)
GPIO (x3)
To CS5376A
Digital Control
Figure 4. CS3301 Amplifier Connections
DS595F3
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