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 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 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, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60V Input Voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -VEE to VCC Power Dissipation (Note 2), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30W Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to +150C Operating Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150C Lead Temperature (During Soldering, 10sec), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +260C Thermal Resistance, Junction-to-Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3C/W Thermal Resistance, Junction-to-Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73C/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 60C max. For operation at higher tab temperature and at ambient temperatures greater than 25C, the NTE7143 must be derated based on a maximum 150C junction temperatur. Thermal resistance depends upon device mounting techniques. RthJC is typically 2C/W.
Electrical Characteristics: VCC = +25V, -VEE = -25V, TA = +25C, RL = 8, AV = 20 (26dB), fo = 1kHz unless otherwise specified)
Parameter Supply Current Output Power Total Harmonic Distortion POUT = 0W THD = 1%, Note 3 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 Offset Voltage Input Bias Current Input Offset Current Gain-Bandwidth Product Open Loop gain PSRR fo = 20kHz DC VCC, 1kHz, 1Vrms VEE, 1kHz, 1Vrms Max. Slew rate Current Limit Equivalent Input Noise Voltage 20W, 8, 70kHz BW VOUT = VSUPPLY -10V RS = 600, CCIR Test Conditions Typ 70 25 0.015 0.05 0.022 0.07 1 0.2 0 5.5 90 95 83 8 4 3 Tested Limits 100 - - 0.4 - 0.6 15 2 0.5 - - 52 52 - 3 - Unit mA W % % % % mV A A MHz dB dB dB V/s A Vrms
Note 3. Assumes the use of a heat sink having a thermal resistance of 1C/W and no insulator with an ambient temperature of 25C. Because the output limiting circuitry has a negative temperature coefficient, the maximum output power delivered to a 4 load may be slightly reduced when the tab temperature exceeds 55C.
Pin Connection Diagram (Front View) .114 (2.9) .619 (15.72) Max .896 (22.76) Max .850 (21.6) Max (+) Input (-) Input VCC Output -VEE .135 (3.45) 1 2 3 4 .182 (4.62) Max 5 .150 (3.81) .182 (4.62) .364 (9.25) Max .408 (10.37 Max 0.45 (1.37) Max
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