TDA1910(1997) データシートの表示（PDF） - STMicroelectronics

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TDA1910
(Rev.:1997)

10W AUDIO AMPLIFIER WITH MUTING

STMicroelectronics 

TDA1910

APPLICATION SUGGESTION

The recommended values of the components are those shown on application circuit of fig. 21. Different

values can be used.

The following table can help the designer.

Component

Raccom.

value

Purpose

Larger than

Smaller than

recommended value recommended value

Allowed range

Min.

Max.

Rg + R1

10KΩ

Input signal imped.

for muting operation

Increase of the atte- Decrease of the

nuation in muting-on attenuation in muting

condition. Decrease on condition.

of the input sensitivity.

R2

3.3KΩ Close loop gain

Increase of gain.

Decrease of gain.

9 R3

setting.

Increase quiescent

current.

R3

100Ω Close loop gain

Decrease of gain.

Increase of gain.

setting.

R2/9

R4

1Ω

Frequency stability Danger of oscillation

at high frequencies

with inductive loads.

P1

20KΩ Volume

potentiometer.

Increase of the

switch-on noise.

Decrease of the input

impedance and of the

input level.

10KΩ

100KΩ

C1

1 µF Input DC decoupling.

C2

1 µF

C3

0.22µF

Higher low frequency

cutoff.

C4

2.2µF Inverting input DC

Increase of the

Higher low frequency 0.1µF

decoupling.

switch-on noise.

cutoff.

C5

0.1µF Supply voltage

bypass.

Danger of oscillations.

C6

10µF Ripple rejection.

Increase of SVR.

Degradation of

Increase of the

SVR

switch-on time

2.2µF 100µF

C7

47µF Bootstrap.

Increase of the distor- 10µF

tion at low frequency.

100µF

C8

0.22µF Frequency stability.

C9

2200µF Output DC

(RL = 4Ω) decoupling.

1000 µF

(RL = 8Ω)

Danger of oscillation.

Higher low frequency

cutoff.

11/14

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