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NTE Electronics
NTE Electronics


7143

Integrated Circuit Audio Power Amplifier/ 20W



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7143 pdf
NTE7143
Integrated Circuit
Audio Power Amplifier, 20W
Description:
The NTE7143 is a monolithic power amplifier in a 5–Lead TO220 type package offering very low
distortion and high quality performance for consumer audio applications.
This device delivers 20W into a 4or 8load on ±25V supplies. Using an 8load and ±30V supplies,
over 30W of power may be delivered. The amplifier is designed to operate with a minimum of external
components. Device overload protection consists of both internal current limit and thermal shutdown.
The NTE7143 design takes advantage of advanced circuit techniques and processing to achieve ex-
tremely low distortion levels even at high output power levels. Other outstanding features include high
gain, fast slew rate and a wide power bandwidth, large output voltage swing, high current capability,
and a very wide supply range. The amplifier is internally compensated and stable for gains of 10 or
greater.
Features:
D Up to 30W Output Power
D AVO Typically 90dB
D Low Distortion: 0.015%, 1kHz, 20W
D Wide Power Bandwidth: 70kHz
D Protection for AC and DC Short Circuits to GND
D Thermal Protection with Parole Circuit
D High Current Capability: 4A
D Wide Supply Range: 16V – 60V
D Internal Output Protection Diodes
D 94dB Ripple Rejection
Applications:
D High Performance Audio Systems
D Bridge Amplifiers
D Stereo Phonographs
D Servo Amplifiers
D Instrument Systems
Absolute Maximum Ratings: (Note 1)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60V
Input Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –VEE to VCC
Power Dissipation (Note 2), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30W
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Operating Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Lead Temperature (During Soldering, 10sec), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +260°C
Thermal Resistance, Junction–to–Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3°C/W
Thermal Resistance, Junction–to–Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W
Note 1. “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur.
Operating ratings indicate conditions for which the device is functional, but do not guarantee
specific performance limits.
Note 2. Assumes TTAB equals 60°C max. For operation at higher tab temperature and at ambient
temperatures greater than 25°C, the NTE7143 must be derated based on a maximum 150°C
junction temperatur. Thermal resistance depends upon device mounting techniques. RthJC
is typically 2°C/W.



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7143 pdf
Electrical Characteristics: VCC = +25V, VEE = 25V, TA = +25°C, RL = 8, AV = 20 (26dB),
fo = 1kHz unless otherwise specified)
Parameter
Test Conditions
Typ Tested Limits Unit
Supply Current
POUT = 0W
70 100 mA
Output Power
THD = 1%, Note 3
25 W
Total Harmonic Distortion
Offset Voltage
POUT = 20W, fo = 1kHz, Note 3
POUT = 20W, fo = 20kHz, Note 3
POUT = 20W, RL = 4, fo = 1kHz, Note 3
POUT = 20W, RL = 4, fo = 20kHz, Note 3
0.015
0.05
0.022
0.07
±1
0.4
0.6
±15
%
%
%
%
mV
Input Bias Current
±0.2 ±2 µA
Input Offset Current
0 ±0.5 µA
GainBandwidth Product
fo = 20kHz
5.5 MHz
Open Loop gain
DC
90 dB
PSRR
Max. Slew rate
VCC, 1kHz, 1Vrms
VEE, 1kHz, 1Vrms
20W, 8, 70kHz BW
95 52 dB
83 52 dB
8 V/µs
Current Limit
Equivalent Input Noise Voltage
VOUT = VSUPPLY 10V
RS = 600, CCIR
4 3A
3 µVrms
Note 3. Assumes the use of a heat sink having a thermal resistance of 1°C/W and no insulator with
an ambient temperature of 25°C. Because the output limiting circuitry has a negative temper-
ature coefficient, the maximum output power delivered to a 4load may be slightly reduced
when the tab temperature exceeds 55°C.
Pin Connection Diagram
(Front View)
.114 (2.9)
.896
(22.76)
Max
.408 (10.37
Max
0.45 (1.37)
Max
.619
(15.72)
Max
.364
(9.25)
Max
.850
(21.6)
Max
(+) Input
() Input
VCC
Output
VEE
.135 (3.45)
1
.150 (3.81)
35
24
.182 (4.62) Max
.182
(4.62)



Part Number 7143
Description Integrated Circuit Audio Power Amplifier/ 20W
Maker NTE Electronics - NTE Electronics
Total Page 2 Pages
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