SM6661A Datasheet, PDF (9/14 Pages) Nippon Precision Circuits Inc – Post-amplifier for Gyroscope

SM6661A
TYPICAL APPLICATION CIRCUIT
Sensor 1
Reference voltage
VREF_IN
Sensor signal
VREF_IN
22µF
VREF_IN1
VSIG_IN1
GND
10µF
VCC/2
0.1µF
Sensor 2
Reference voltage
VREF_IN
Sensor signal
VREF_IN
VREF_IN2
VSIG_IN2
C1 R1
22µF 150kΩ
C2
2200pF
0.1µF
VCC
HPF1
−
AMP
30dB
+
GAIN1
R2
330kΩ
−
AMP
+
A/D converter 1
Amplified signal
VSIG_OUT1
VCC/2
SLEEP
REF
−
AMP
30dB
+
+
AMP
−
VCC
0.1µF
22µF
A/D converter 2
VSIG_OUT2
Amplified signal
VCC/2
GND
HPF2
GAIN2
C1 R1
22µF 150kΩ
R2
330kΩ
C2
2200pF
Total gain
f_CL
f_CH
36.8dB
0.05Hz
219Hz
SEIKO NPC CORPORATION —9