Comp.

Recom.

Value

Purpose

Larger Than

Smaller Than

120 k

Ω

Optimization of the Output

Symmetry

1k

Ω

2k

Ω

12

Ω

Closed Loop Gain Setting (see

Bridge Amplifier Design) (*)

1

Ω

Frequency Stability

Danger of Oscillation at High

Frequency with Inductive Loads

2.2

µF

Input DC Decoupling

2.2

µF

Optimization of Turn on Pop and

Turn on Delay

High Turn on Delay

Higher Turn on Pop, Higher

Low Frequency Cut-off,

Increase of Noise

0.1

µF

Supply by Pass

Danger of Oscillation

10

µF

Ripple Rejection

Increase of SVR, Increase of

the Switch-on Time

Degradation of SVR.

100

µF

Bootstrapping

Increase of Distortion

at low Frequency

220

µF

Feedback Input DC Decoupling,

Low Frequency Cut-off

Higher Low Frequency

Cut-off

0.1

µF

Frequency Stability

Danger of Oscillation

(*) The closed loop gain must be higher than 32dB.

APPLICATION SUGGESTION

The recommended values of the components are those shown on Bridge applicatiion circuit of Figure 1.

Different values can be used ; the following table can help the designer.

TDA2005

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