TDA2004A 查看數據表（PDF） - STMicroelectronics

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TDA2004A

10 + 10W STEREO AMPLIFIER FOR CAR RADIO

STMicroelectronics 

Figure 17 : Total Power Dissipation and

Efficiency vs. Output Power .

TDA2004A

APPLICATION SUGGESTION

The recommended values of the componentsare those shown on application circuit of fig.1. Different values

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

Component

R1

R2, R4

R3, R5

R6, R7

C1, C2

C3

C4, C6

C5, C7

C8, C9

C10, C11

Recomm. Value

120KΩ

1KΩ

3.3Ω

1Ω

2.2µF

10µF

100µF

100µF

0.1µF

1000µF to 2200µF

Purpose

Larger Than

Smaller Than

Optimization of the Smaller PO max.

output signal simmetry

Smaller PO max.

Close loop gain

setting (*)

Increase of gain

Decrease of gain

Decrease of gain

Increase of gain

Frequency stability

Danger of oscillation

at high frequency with

inductive load

Input DC decoupling High turn-on delay

High turn-on pop

Higher low frequency

cutoff. Increase of

noise

Ripple Rejection

Increase of SVR.

Degradation of SVR.

Increase of the switch-

on time.

Boostrapping

Increase of distortion

at low frequency

Feedback Input DC

decoupling.

Frequency Stability

Danger of oscillation.

Output DC decoupling.

Higher low-frequency

cut-off.

(*) The closed–loop gain must be higher than 26dB.

7/10

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