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NTE1288
Integrated Circuit
Audio Power Amplifier, 10W
for Car Radio
Description:
The NTE1288 has improved performance with the same pin configuration as the NTE1232. The additional features of the NTE1232; very low number of external components, ease of assembly, space
and cost saving, are maintained. The device provides a high output current capability (up to 3.5A),
very low harmonic and cross distortion.
Complete safe operation is guaranteed due to protection against DC and AC short−circuit between
all pins and GND, thermal over−range, load dump voltage surge up to 40V, polarity inversion and fortuitous open ground.
Absolute Maximum Ratings:
Peak Supply Voltage (50ms), V
DC Supply Voltage, V
CC
OPerating Supply Voltage, V
Output Peak Current, I
O
CC
CC
Repetitive 3.5A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Non−Repetitive 4.5A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (TC = +90°C), P
tot
Operating Junction Temperature Range, T
Storage Temperature Range, T
stg
Thermal Resistance, Junction−to−Case, R
J
thJC
−40° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−40° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
40V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Static Characteristics: (TA = +25°C, VCC = 14.4V unless otherwise specified)
Parameter Symbol Min Typ Max Unit
Supply Voltage V
Quisecnt Output Voltage Pin4 V
Quiescent Drain Current Pin5 I
CC
O
CC
8 − 18 V
6.1 6.9 7.7 V
− 44 50 mA
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Dynamic Characteristics: (TA = +25°C, VCC = 14.4V, AV = 40dB unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Output Power P
d = 10%, f = 1kHz
O
RL = 4Ω
5.5 6.0 − W
RL = 2Ω 9 10 − W
RL = 3.2Ω − 7.5 − W
RL = 1.6Ω − 12 − W
Input Saturation Voltage V
Input Sensitivity S
I
f = 1kHz, PO = 500mW, RL = 4Ω
PO = 6W, RL = 4Ω
300 − − mV
− 14 − mV
− 55 − mV
PO = 500mW, RL = 2Ω − 10 − mV
PO = 10W, RL = 2Ω − 50 − mV
Bandwidth (−3dB) B
PO = 1W, RL = 4Ω
40 to 15,000 Hz
Harmonic Distortion d 50mW ≤ PO ≤ 4.5W, RL = 4Ω, f = 1kHz − 0.15 − %
50mW ≤ PO ≤ 7.5W, RL = 2Ω, f = 1kHz − 0.15 − %
Input Resistance (Pin1) R
Voltage Gain
A
Open Loop
f = 1kHz 70 150 −
I
RL = 4Ω, f = 1kHz
V
− 80 − dB
kΩ
Closed Loop 39.5 40.0 40.5 dB
Input Noise Voltage V
Input Noise Current i
B (−3dB) = 10Hz to 25kHz, B (−20dB) = 4Hz to 27kHz − 1 5 µV
n
B (−3dB) = 10Hz to 25kHz, B (−20dB) = 4Hz to 27kHz − 60 200 pA
n
Efficiency η f = 1kHz, PO = 6W, RL = 4Ω − 69 − %
PO = 10W, RL = 2Ω − 65 − %
Supply Voltage Rejection SVR f = 100Hz, V
Pin Connection Diagram
Non−Invert Input
Invert Input
V
CC
Output
GND
= 500mV, RG = 10kΩ, RL = 4Ω 30 36 − dB
ripple
.408
(10.37
Max
.114 (2.9)
.850
(21.6)
Max
.896
(22.76)
Max
.135 (3.45)
12345
0.45 (1.37)
Max
.619
(15.72)
Max
.364
(9.25)
Max
.150
(3.81)
.182 (4.62) Max
.182
(4.62)
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