NTE1112
Integrated Circuit
Audio Power Amplifier, 4W @ 24V
Description:
The NTE1112 is an integrated monolithic circuit in a 14−lead DIP plastic package with external heat−
sink.
Features:
D Output Power 2.2W (18V−16Ω)
D Low Quiescent Output Current
D High Efficiency
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27V
Input Voltage (Note 1), Vi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5V to 27V
Output Peak Current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1A
Power Dissipation (Tamb = 25°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.35W
Storage and Junction Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55 to +150°C
Thermal Resistance Junction−Case, Rth j−case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17°C/W
Thermal Resistance Junction−Ambient, Rth j−amb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93°C/W
Note 1. For V < 27V, Vimax = Vs
Electrical Characteristics: (Tamb = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
V = 12V
−
−
5.0
6.2
2.0
2.5
175
180
1.0
1.7
1.25
1.4
2.2
15
−
−
−
−
−
−
−
−
−
−
−
−
mA
mA
mA
mA
mA
nA
W
Total Quiescent Drain Current
I
s
d
V = 18V
s
V = 12V
s
−
Quiescent Drain Current of
Output Transistors
I
d
V = 18V
s
−
Drain Current
I
d
d = 10% R = 16Ω, P = 2.2W, V = 18V
−
L
O
S
Input Bias Current
Output Power
I
b
V = 18V
s
−
V = 12V, R = 8Ω
s
−
P
d = 3%
L
O
V = 18V, R = 16Ω
s
−
W
L
V = 24V, R = 50Ω
s
−
W
L
V = 12V, R = 8Ω
s
1.0
−
W
d = 10%
L
V = 18V, R = 16Ω
s
W
L
Internal Feedback Resistance
R
−
kΩ
F