NTE1376
Integrated Circuit
Audio Power Amplifier, 22W
Description:
The NTE1376 is a monolithic integrated circuit in a 5Lead TO220 type package intended for use as
an audio class AB amplifier. Typically, it provides 22W output power (THD = 0.5%) at V
S
= 32V/4
.
This device provides high output current and has very low harmonic and crossover distortion. Fur-
ther, the NTE1376 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
20V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Voltage, V
I
V
S
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential Input Voltage, V
I
15V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Peak Current (Internally Limited), I
O
4A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (T
C
= +75
C), P
tot
25W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical Thermal ShutDown Junction Temperature (V
S
=
16V, T
A
= +25
C), T
sd
+145
C
. . . . . . . .
Electrical Characteristics: (V
S
=
16V, T
A
= +25
C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Supply Voltage
V
S
2.5
20
V
Quiescent Drain Current
I
d
V
S
=
4.5V
30
mA
V
S
=
20V
45
100
mA
Input Bias Current
I
b
V
S
=
20V
0.3
1.0
A
Input Offset Voltage
V
OS
V
S
=
20V
2
20
mV
Input Offset Current
I
OS
200
nA
Output Power
P
O
THD = 0.5%, T
C
= +60
C, f = 1kHz, R
L
= 4
20
22
W
THD = 0.5%, T
C
= +60
C, f = 1kHz, R
L
= 8
12
W
THD = 0.5%, T
C
= +60
C, f = 1.5kHz, R
L
= 4
15
18
W
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