1376

NTE1376
Integrated Circuit
Audio Power Amplifier, 22W
Description:
The NTE1376 is a monolithic integrated circuit in a 5–Lead TO220 type package intended for use as
an audio class AB amplifier. Typically, it provides 22W output power (THD = 0.5%) at VS = 32V/4Ω.
This device provides high output current and has very low harmonic and cross–over distortion. Further, the NTE1376 incorporates a short circuit protection system comprising an arrangement for automatically limiting the dissipated power so as to keep the working point of the output transistors within
their safe operating area. A thermal shut–down system is also included.
Absolute Maximum Ratings:
Supply Voltage, VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20V
Input Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VS
Differential Input Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±15V
Output Peak Current (Internally Limited), IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4A
Power Dissipation (TC = +75°C), Ptot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25W
Operating Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +150°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +150°C
Thermal Resistance, Junction–to–Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3°C/W
Typical Thermal Shut–Down Junction Temperature (VS = ±16V, TA = +25°C), Tsd . . . . . . . . +145°C
Electrical Characteristics: (VS = ±16V, TA = +25°C unless otherwise specified)
Parameter
Symbol
Min
Typ
Max
Unit
±2.5
–
±20
V
VS = ±4.5V
–
–
30
mA
VS = ±20V
–
45
100
mA
Ib
VS = ±20V
–
0.3
1.0
µA
Input Offset Voltage
VOS
VS = ±20V
–
±2
±20
mV
Input Offset Current
IOS
–
–
±200
nA
Output Power
PO
THD = 0.5%, TC = +60°C, f = 1kHz, RL = 4Ω
20
22
–
W
THD = 0.5%, TC = +60°C, f = 1kHz, RL = 8Ω
–
12
–
W
THD = 0.5%, TC = +60°C, f = 1.5kHz, RL = 4Ω
15
18
–
W
Supply Voltage
VS
Quiescent Drain Current
Id
Input Bias Current
Test Conditions
Electrical Characteristics (Cont’d): (VS = ±16V, TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Power Bandwidth
BW
PO = 1W, RL = 4Ω
–
100
–
kHz
Voltage Gain
GV
f = 1kHz, Open Loop
–
80
–
dB
29.5
30.0
30.5
dB
PO = 0.1 to 10W, RL = 4Ω, f = 40 to 15000Hz
–
0.08
–
%
PO = 0.1 to 10W, RL = 4Ω, f = 1kHz
–
0.03
–
%
f = 1kHz, Closed Loop
Total Harmonic Distortion
THD
Input Noise Voltage
eN
B = 22Hz to 22kHz
–
3
10
µV
Input Noise Current
IN
B = 22Hz to 22kHz
–
80
200
pA
Input Resistance (Pin1)
RI
0.5
5.0
–
MΩ
RL = 4Ω, Rg = 22kΩ, GV = 30dB, f = 100Hz,
Vripple = 0.5VRMS
40
50
–
dB
f = 1kHz, PO = 12W, RL = 8Ω
–
66
–
%
f = 1kHz, PO = 22W, RL = 4Ω
–
63
–
%
Supply Voltage Rejection
Efficiency
SVR
η
Pin Connection Diagram
(Front View)
Non–Inverting Input
Inverting Input
(+) VS
Output
(–) VS/Tab
.408
(10.37)
Max
.182 (4.62) Max
.054
(1.37)
Max
.114 (2.9)
.619
(15.72)
Max
.364
(9.25)
Max
.896
(22.76)
Max
1
2
3
4
5
.850
(21.6)
Max
.135 (3.45)
.150 (3.81)
.182
(4.62)
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