Figure 9: P.C. Board and Component Layout (1:1 scale)

APPLICATION SUGGESTION

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

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

Component

Recomm.

Value

Purpose

Larger Than

Smaller Than

R1 and R3

1.5K

Ω

Close loop gain setting (*)

Increase of gain

Decrease of gain

R2 and R4

47

Ω

Close loop gain setting (*)

Decrease of gain

Increase of gain

R5 and R6

4.7

Ω

Frequency stability

Danger of oscillations

C1 and C2

100nF

Input DC decoupling

Higher SVR

Higher low frequency cutoff

C3

47

µF

- Ripple Rejection

- Mute time constant

Increase of the Switch-on

time

- Degradation of SVR

- Worse turn-off pop by muting

C4

100nF

Supply Voltage Bypass

Danger of oscillations

C5

1000

µF

Supply Voltage Bypass

C6 and C7

47

µF

Feedback input DC

decoupling

Increase of the Switch-on

time

Danger of Switch-on time

C8 and C9

0.1

µF

Frequency stability

Danger of oscillations

C10 and C11

1000

µF

Output DC decoupling

Higher low-frequency cut-off

(*) Closed loop gain must be higher than 26dB

Note: Use either C1, C2 (Polyester) or C1(*), C2(*) (Electrolytic) but not both.

TDA7263

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