TEA2025D

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

6 of 8

www.unisonic.com.tw

QW-R107-017,B

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APPLICATION INFORMATION(Cont.)

Output Capacitors.

The low cut off frequency due to output capacitor depending on the load is given by:

1

Stability

A good layout is recommended in order to avoid oscillations. In general, the designer must pay attention on the

following points:

-Short wires of components and short connections.

-No ground loops.

-Bypass of supply voltage with capacitors as nearest as possible to the supply I.C. pin. The low value (polyester)

capacitors must have good temperature and frequency characteristics.

-No sockets.

The heatsink can have a smaller factor of safety compared with that of a conventional circuit. There is no device

reduced.

APPLICATION SUGGESTION

The recommended values of the components are those shown on stereo application circuit of Fig.2 different values

can be used, the following table can help the designer.

Component

Recommended

Purpose

Larger

Than

Smaller Than

C1,C2

0.22µF

Input DC Decoupling in Case of

Slider Contact Noise of Variable

Resistor

C3

100µF

Ripple Rejection

Degradation of SVR, Increase of THD at

Low Frequency and Low Voltage

C4,C5

100µF

Bootstrap

C6,C7

470µF

Output DC Decoupling

Increase of Low Frequency Cut-off

C8,C9

0.15µF

Frequency Stability

Danger of Oscillations

C10,C11

100µF

Inverting Input DC Decoupling

Increase of Low Frequency Cut-off