Bose BUILT-INvisible TA-1

57
INTEGRATED CIRCUIT DIAGRAMS
Bose
®
P/N: 170156, Power Amplifier,
Audio, TDA7294
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
15. -Vs (Power)
14. OUT
13. +Vs (Power)
12. N.C.
11. N.C.
10. MUTE
9. STAND-BY
8. -VS (Signal)
7. +VS (Signal)
6. Bootstrap
5. N.C.
4. SVR
3. Non-Inverting Input
2. Inverting Input
1. Stand-by Gnd.
MUTE
STANDBY
THERMAL
SHUTDOWN
SHORT-
CIRCUIT
PROTECTION
TDA7294
-
+
2
7
13
14
6
15
81
9
10
4
3
BOOT-
STRAP
OUT
+Vs (signal)
IN-
IN+
IN+MUTE
MUTE
STANDBY
STANDBY
GROUND
-Vs (signal)
TOP-VIEW
+Vs (power)
-Vs (power)
Pin Function
Bose P/N: 137927, Voltage Regulator,
LM317T
Bose P/N: 137928, Voltage Regulator,
LM337T
1
2
3
45
6
7
8
-
+
-
+
A
B
Pin Function
1. A Output
2. A Inverting Input
3. A Non-inverting Input
4. V-
5. B Non-inverting Input
6. B Inverting Input
7. B Output
8. V+
Bose P/N: 146820, Dual Op-amp, NJM2082
1
2
3
4
5
6
7
8
Pin Function
1. A Output
2. A Inverting Input
3. A Non-inverting Input
4. GND
5. B Non-inverting Input
6. B Inverting Input
7. B Output
8. V+
-
+
A
-
+
B
Bose P/N: 148584, Dual Op-amp w/switch,
LM393
1
2
3
45
6
7
8
-
+
-
+
A
B
Pin Function
1. A Output
2. A Inverting Input
3. A Non-inverting Input
4. V-
5. B Non-inverting Input
6. B Inverting Input
7. B Output
8. V+
Bose P/N: 148598, Dual Op-amp, NJM4556
1
2
3
4
5
6
78
9
10
11
12
13
14
PIN FUNCTION
1. A OUTPUT
2. A -INPUT
3. A +INPUT
4. +Vcc
5. B +INPUT
6. B -INPUT
7. B OUTPUT
8. C OUTPUT
9. C -INPUT
10. C +INPUT
11. -Vcc
12. D +INPUT
13. D -INPUT
14. D OUTPUT
-+ -+
-+
-+
A
B
D
C
Bose P/N: 186112, Quad Op-amp, TL074