KA8329B
6. TORQUE RIPPLE CONTROL
VCC1
3
2
Rs
31
1
VCR PRODUCTS
The motor torque ripple is controlled by Pin 31 voltege
as follows.
1 : GND
2 : Normal Mode
3 : Control Mode
7. FORWARD & REVERSE ROTATION CONTROL
32
1.25V
Forward mode : Pin 32 ÿ1.8V
Reverse mode : Pin 32 þ0.8V
8. FG AMP
These amplifiers are the inversion type. One amplifier is built in both the reference voltage(approx. 2.5V)
and the gain setting resistors. The voltage gain ia approx. 31 times.
56K
56K
1.8K
1.8K
28
Ì
2.5V
Ê
27
29
22
Ì
Ê
30
9. PHASE STABILIZATION
CI
18
16
Be inserted a capacitor between Pin 16 and Pin 18. This capacitor, approx.
0.1 is for the phase stabilization of the circuit.
PM-97-D012
April 1997.