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NTE1724

Audio Power Amplifier, 20W

NTE Electronics 

NTE1724

Integrated Circuit

Audio Power Amplifier, 20W

Description:

This device is a monolithic integrated circuit and a power amplifier designed for Hi−Fi audio sets and

in a 10 pin single in−line plastic package. NTE1724 can provide 20W (Typ) to 8Ω at 1% THD and ±22V

supply voltage.

Features:

D High Output Power:

20W Typ (VCC = ±22V, Av = 40dB, f = 20Hz to 20kHz, RL = 8Ω, THD = 1%)

20W Typ (VCC = ±22V, Av = 27.5dB, f = 20Hz to 20kHz, RL = 8Ω, THD = 0.5%)

D Low Distortion:

0.02% Typ (VCC = ±22V, Av = 40dB, f = 1kHz, RL = 8Ω, POUT = 5.0W)

0.005% Typ (VCC = ±22V, Av = 27.5dB, f = 1kHz, RL = 8Ω, POUT = 5.0W)

D Wide Frequency Bandwidth: f = 250kHz (−3dB)

Absolute Maximum Ratings:

Supply Voltage (Quiescent), VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±30V

Circuit Current, ICC(peak) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A

Package Dissipation (Ttab = +60°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30W

Operating Temperature Range, Topt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +70°C

Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +150°C

Thermal Resistance Junction to Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3°C/W

Recommended Operating Conditions: (TA = +25°C unless otherwise specified)

Parameter

Symbol

Test Conditions

Min Typ Max Unit

Operating Supply Voltage

±17 ±22 ±23 V

Input Impedance

47 56 100 kΩ

Closed Loop Voltage Gain

26 40 − dB

Load Impedance

4 8 −Ω

Electrical Characteristics: (VCC = ±22V, AV = 40dB, RL = 8Ω, TG = 600Ω, TA = +25°C unless

otherwise specified)

Parameter

Symbol

Test Conditions

Min Typ Max Unit

Output Offset Voltage

Circuit Current

Output Power

V10 No Signal

ICC No Signal

PO THD = 0.5%, f = 20Hz to 20kHz

−100 0 +100 mV

30 60 120 mA

16 18 − W

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