SM6661A Datasheet, PDF (2/14 Pages) Nippon Precision Circuits Inc – Post-amplifier for Gyroscope

BLOCK DIAGRAM
SM6661A
VREF_IN1
VSIG_IN1
GND
VCC/2
VREF_IN2
VSIG_IN2
VCC
HPF1 GAIN1
−
AMP
30dB
+
−
AMP
0 to 20dB
+
REF
−
AMP
30dB
+
+
AMP
−^{0 to 20dB}
GND
HPF2 GAIN2
VSIG_OUT1
SLEEP
VCC
VSIG_OUT2
PIN DESCRIPTION
Number
Name
I/O ^*1
1
HPF1
O
2
VCC
–
3
VREF_IN1
I
4
VSIG_IN1
I
5
GND
–
Type ^*2
A
–
A
A
–
6
VCC/2
O
A
7
VREF_IN2
I
A
8
VSIG_IN2
I
A
9
GND
–
–
10
HPF2
O
A
11
GAIN2
I
A
12
VSIG_OUT2
O
A
13
VCC
–
–
14
SLEEP
Ip
D
15
VSIG_OUT1
O
A
16
GAIN1
I
A
*1. I: input, Ip: input with built-in pull-up resistor, O: output
*2. A: analog, D: digital
Description
30dB amplifier output pin 1
Supply pin
Gyroscope IC reference voltage input pin 1
Gyroscope IC signal input pin 1
Ground pin
Reference voltage pin
Note. Connect smoothing capacitors.
Gyroscope IC reference voltage input pin 2
Gyroscope IC signal input pin 2
Ground pin
30dB amplifier output pin 2
Variable gain amplifier input pin 2
Signal output pin 2
Supply pin
Sleep mode control pin with built-in pull-up resistor
HIGH: sleep mode, LOW: normal operation
Signal output pin 1
Variable gain amplifier input pin 1
SEIKO NPC CORPORATION —2