
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 4
or 8
load on
±
25V supplies. Using an 8
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:
Up to 30W Output Power
A
VO
Typically 90dB
Low Distortion: 0.015%, 1kHz, 20W
Wide Power Bandwidth: 70kHz
Protection for AC and DC Short Circuits to GND
Thermal Protection with Parole Circuit
High Current Capability: 4A
Wide Supply Range: 16V – 60V
Internal Output Protection Diodes
94dB Ripple Rejection
Applications:
High Performance Audio Systems
Bridge Amplifiers
Stereo Phonographs
Servo Amplifiers
Instrument Systems
Absolute Maximum Ratings:
(Note 1)
Supply Voltage, V
CC
Input Voltage, V
I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (Note 2), P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range, T
opr
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Junction Temperature, T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead Temperature (During Soldering, 10sec), T
L
Thermal Resistance, Junction–to–Case, R
thJC
Thermal Resistance, Junction–to–Ambient, R
thJA
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.
60V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–V
EE
to V
CC
30W
0
°
to +70
°
C
–65
°
to +150
°
C
150
°
C
+260
°
C
3
°
C/W
73
°
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .