NTE1378
Integrated Circuit
Audio Power Amplifier, 10W
Description:
The NTE1378 is a monolithic integrated circuit in a 5Lead TO220 type package intended for use as
an audio class AB amplifier. Typically, it provides 12W output power (THD = 10%) at V
S
=
12V/4
.
This device provides high output current and has very low harmonic and crossover distortion. Fur-
ther, the NTE1378 incorporates a short circuit protection system comprising an arrangement for auto-
matically limiting the dissipated power so as to keep the working point of the output transistors within
their safe operating area. A thermal shutdown system is also included.
Absolute Maximum Ratings:
Supply Voltage, V
S
15V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Voltage, V
I
V
S
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential Input Voltage, V
I
12V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Peak Current (Internally Limited), I
O
3A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (T
C
= +90
C), P
tot
20W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Junction Temperature Range, T
J
40
to +150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
40
to +150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Resistance, JunctiontoCase, R
thJC
3
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Min. Thermal ShutDown Junction Temperature (V
S
=
12V, P
tot
= 9W, T
A
= +25
C), T
sd
+110
C
.
Electrical Characteristics: (V
S
=
12V, T
A
= +25
C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Supply Voltage
V
S
6
15
V
Quiescent Drain Current
I
d
V
S
=
15V
40
80
mA
Input Bias Current
I
b
V
S
=
15V
0.2
3.0
A
Input Offset Voltage
V
OS
V
S
=
15V
8
mV
Input Offset Current
I
OS
V
S
=
15V
80
nA
Output Offset Voltage
V
OS
V
S
=
15V
10
100
mV
Output Power
P
O
THD = 10%, f = 1kHz, R
L
= 4
12
W
THD = 10%, f = 1kHz, R
L
= 8
6
8
W
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