1278

NTE1278
Integrated Circuit
Audio Power Amp, 5.8W
Features:
D Few External Parts Required
D Adjustable Closed−Loop Gain
D High Sustaining Over Voltage
D Excellent Ripple Rejection
D High Power and Low Distortion
D Audio Muting Circuit
D Protection Circuit for Load Short, Excessive Supply Voltage, and Thermal Shutdown
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Peak Supply Voltage (200ms), VCCsurge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
DC Supply Voltage, VCC(DC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25V
Operating Supply Voltage, VCC(ope) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
Peak Output Current, IO(Peak) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5A
Power Dissipation (TC = +25°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.5W
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −30° to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +150°C
Electrical Characteristics: (TA = +25°C, VCC = 12.5V, RL = 4Ω, Rg = 600Ω, f = 1kHz unless
otherwise specified)
Parameter
Quiescent Current
Output Power
Symbol
Test Conditions
Min
Typ
Max
Unit
−
40
80
mA
VCC = 18V
−
45
100
mA
THD = 10%
−
5.2
−
W
5.0
5.8
−
W
VCC = 13.2V, RL = 2Ω, THD = 10%
−
9.3
−
W
ICCQ
POUT
VCC = 13.2V, THD = 10%
Maximum Output Power
POM
VCC = 13.2V, VIN = 100mV
−
9.0
−
W
Total Harmonic Distortion
THD
POUT = 1W
−
0.2
1.5
%
POUT = 100mW
−
0.36
1.0
%
POUT = 1W, RL = 2Ω
−
0.5
−
%
Voltage Gain
GV
51.5
53.0
54.5
dB
Input Resistance
RIN
−
34
−
kΩ
Output Noise Voltage
VNO
−
0.9
2.0
mV
Rg = 10kΩ, BW = 50Hz to 20kHz
Pin Connection Diagram
(Front View)
10 Bootstrap
9 Output
8 GND
7 GND
6 Gain Adjust
5 Feedback
4 Input
3 Muting Control
2 Ripple Filter
1 VCC
1.050 (26.67) Max
.079 (2.0)
.867 (22.0)
.128 (3.2) Dia
.276
(7.0)
.433
(11.0)
1
10
.217
(5.5)
.100 (2.54)
.900 (22.8)
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