CS3301A Datasheet, PDF (12/16 Pages) Cirrus Logic – Low-noise, Programmable Gain, Differential Amplifier

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