Using TDA1562Q 54 W Amplifier Circuit Diagram

This is the simple Using TDA1562Q 54 W Amplifier Circuit Diagram. The integrated output amplifier described in this article consists of little more than one integrated circuit. It is intended especially for use in motor vehicles and other battery operated applications. Although it appears simple and hardly worth looking at, the amplifier can produce an appreciable audio power output.

Using TDA1562Q 54 W Amplifier Circuit Diagram

Data

PropertiesHigh power output through Class-H operation

Low power dissipation during reproduction of music signals

Proof against short-circuits

Protection against excessive temperatures

Standby switch

No power-on or power-off clicks

Visible error indication

Measurement results (at Ub=14.4 V)

Supply voltage 8–18 V

Sensitivity 760 mV r.m.s.

Input impedance 70 kΩ

Power output 54 W r.m.s.

into 4 Ω (f=1 kHz; THD+N=1%)

Harmonic distortion (THD+N) at 1 W into 4 Ω: 0.046% (1 kHz)

0.29% (20 kHz)

at 35 W into 4 Ω: 0.12% (1 kHz)

0.7% (20 kHz)

Signal-to-noise ratio (with 1 W into 4 Ω) 88 dBA

Power bandwidth 7.5 Hz – 185 kHz (at 25 W into 4 Ω)

Quiescent current about 135 mA (‘on’)

COMPONENTS LIST

Resistors:

R1 = 1MΩ

R2 = 4kΩ7

R3 = 1kΩ

R4 = 100kΩ

Capacitors:

C1,C2 = 470nF

C3,C4 = 10μF 63V radial

C5,C6,C8 = 4700μF 25V radial

(18mm max. dia., raster 7.5 mm)

C7 = 100nF, raster 5 mm

Semiconductors:

D1 = high-efficiency-LED

IC1 = TDA1562Q (Philips)

Miscellaneous:

S1 = single-pole on/off switch

Four spade connectors, PCB mount

Heatsink for IC1 (Rth<2.5>