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 4Ω or 8Ω load on
±25V
supplies. Using an 8Ω load 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
A
VO
Typically 90dB
D
Low Distortion: 0.015%, 1kHz, 20W
D
Wide Power Bandwidth: 70kHz
D
Protection for AC and DC Short Circuits to GND
Applications:
D
High Performance Audio Systems
D
Bridge Amplifiers
D
Stereo Phonographs
D
D
D
D
D
Thermal Protection with Parole Circuit
High Current Capability: 4A
Wide Supply Range: 16V – 60V
Internal Output Protection Diodes
94dB Ripple Rejection
D
Servo Amplifiers
D
Instrument Systems
Absolute Maximum Ratings:
(Note 1)
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60V
Input Voltage, V
I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –V
EE
to V
CC
Power Dissipation (Note 2), P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30W
Operating Temperature Range, T
opr
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +70°C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Operating Junction Temperature, T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Lead Temperature (During Soldering, 10sec), T
L
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +260°C
Thermal Resistance, Junction–to–Case, R
thJC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3°C/W
Thermal Resistance, Junction–to–Ambient, R
thJA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 T
TAB
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. R
thJC
is typically 2°C/W.
NTE [ NTE ELECTRONICS ]
