TDA7240 查看數據表（PDF） - STMicroelectronics

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TDA7240

20W BRIDGE AMPLIFIER FOR CAR RADIO

STMicroelectronics 

TDA7240A

APPLICATION SUGGESTION

The recommendedvalues of the componentsare thoseshown on applicationcircuit of Fig. 1. Different values

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

Component

R1, R2

C1

C2

C3

C6, C7

C4

C5

Recommended

Value

2.2Ω

1µF

22µF

22µF

0.22µF

220µF

0.1µF

Purpose

Larger Than

Smaller Than

Frequency Stability

Input DC Decoupling

Ripple Rejection

Feedback low

Frequency Cutoff

Frequency Stability

Supply Filter

Supply Bypass

Danger of High

Frequency Oscillation

Higher Turn On and

Stand-by Delay

Increase of SVR

Increase of the Turn

On Delay

Higher Turn On Pop.

Higher Low

Frequency Cutoff

Degradation of SVR

Higher Low Frequency

Cutoff

Danger of Oscillation

Danger of Oscillation

Danger of Oscillation

Figure 3 : Output Power vs. Supply Voltage.

Figure 4 : Distortion vs. Output Power.

Figure 5 : Output Power vs. Supply voltage.

Figure 6 : Distortion vs. Output Power.

4/8

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