NTE NTE7143 Integrated circuit audio power amplifier, 20w Datasheet

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 extremely 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
D
D
D
D
Applications:
D High Performance Audio Systems
D Bridge Amplifiers
D Stereo Phonographs
D Servo Amplifiers
D Instrument Systems
Thermal Protection with Parole Circuit
High Current Capability: 4A
Wide Supply Range: 16V – 60V
Internal Output Protection Diodes
94dB Ripple Rejection
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.
Electrical Characteristics: VCC = +25V, –VEE = –25V, TA = +25°C, RL = 8Ω, 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
POUT = 20W, fo = 1kHz, Note 3
0.015
–
%
POUT = 20W, fo = 20kHz, Note 3
0.05
0.4
%
POUT = 20W, RL = 4Ω, fo = 1kHz, Note 3
0.022
–
%
POUT = 20W, RL = 4Ω, fo = 20kHz, Note 3
0.07
0.6
%
±1
±15
mV
±0.2
±2
µA
0
±0.5
µA
Offset Voltage
Input Bias Current
Input Offset Current
Gain–Bandwidth Product
fo = 20kHz
5.5
–
MHz
Open Loop gain
DC
90
–
dB
PSRR
VCC, 1kHz, 1Vrms
95
52
dB
VEE, 1kHz, 1Vrms
83
52
dB
Max. Slew rate
20W, 8Ω, 70kHz BW
8
–
V/µs
Current Limit
VOUT = VSUPPLY –10V
4
3
A
Equivalent Input Noise Voltage
RS = 600Ω, CCIR
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 temperature coefficient, the maximum output power delivered to a 4Ω load may be slightly reduced
when the tab temperature exceeds 55°C.
.408 (10.37
Max
Pin Connection Diagram
(Front View)
0.45 (1.37)
Max
.114 (2.9)
.619
(15.72)
Max
.896
(22.76)
Max
.364
(9.25)
Max
.850
(21.6)
Max
(+) Input
VCC
(–) Input
Output
–VEE
.135 (3.45)
.150 (3.81)
1
3
2
5
4
.182 (4.62) Max
.182
(4.62)
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