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MX-GT98V/MX-GT95V/MX-GT88V
MX-GT85V/MX-G78V/MX-G75V
LA6541-X (IC801) : Servo driver
1. Pin Layout & block diagram
Vcc
Vref
Vin4
22
24
23
11k
ohm
Level
-
+
shift
Level
shift
11k
ohm
2
1
3
Vcc
Mute
Vin1
2. Pin function
Pin
Symbol
No.
1
Vcc
Power supply (Shorted to pin 24)
2
Mute
All BTL amplifier outputs ON/OFF
3
Vin1
BTL AMP 1 input pin
4
Vg1
BTL AMP 1 input pin (For gain adjustment)
5
Vo1
BTL AMP 1 input pin (Non inverting side)
6
Vo2
BTL AMP 1 input pin (Inverting side)
7
Vo3
BTL AMP 2 input pin (Inverting side)
8
Vo4
BTL AMP 2 input pin (Non inverting side)
9
Vg2
BTL AMP 2 input pin (For gain adjustment)
10
Vin2
BTL AMP 2 input pin
11
Reg Out
External transistor collector (PNP) connection. 5V power supply output
12
Reg In
External transistor (PNP) base connection
13
Res
Reset output
14
Cd
Reset output delay time setting (Capacitor connected externally)
15
Vin3
BTL AMP 3 input pin
16
Vg3
BTL AMP 3 input pin (For gain adjustment)
17
Vo5
BTL AMP 3 output pin (Non inverting side)
18
Vo6
BTL AMP 3 output pin (Inverting side)
19
Vo7
BTL AMP 4 output pin (Inverting side)
20
Vo8
BTL AMP 4 output pin (Non inverting side)
21
Vg4
BTL AMP 4 output pin (For gain adjustment)
22
Vin4
BTL AMP 4 output pin
23
Vref
Level shift circuit's reference voltage application
24
Vcc
Power supply (Shorted to pin 1)
1-42
Vg4
Vo8
Vo7
20
21
19
Vcc
B T L
driver
B T L
driver
4
5
6
Vg1
Vo1
Vo2
Function
Vo6
Vo5
Gnd
18
17
-
+
B T L
driver
B T L
driver
7
8
Gnd
Vo3
Vo4
Vg3
Vin3
Cd
Res
16
15
14
13
11k
ohm
Level
RESET
shift
Level
Regulator
shift
11k
ohm
9
10
11
12
Vg2
Vin2
Reg
Reg
out
In
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