APPLICATION SUGGESTION

The recommended values of the components are those shown on application circuit of Figure 1. Differ-

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

Component

Recomm.

Value

Purpose

Larger than

Smaller than

R1 and R3

1.3K

Ω

Close loop gain setting (*)

Increase of gain

Decrease of gain

R2 and R4

18

Ω

Decrease of gain

Increase of gain

R5 and R6

1

Ω

Frequency stability

Danger of oscillations

C1 and C2

2.2

µF

Input DC decoupling

higher turn-on delay

- worse turn-ON pop

- higer low freq. cutoff.

Increase of noise

C3

22

µF (**)

- Ripple rejection

- Stand-by time constant

Increase of the

Switch-on time

- Degradation of SVR

- worse turn-OFF pop by

stand-by

C4

100nF

Supply setting

Danger of oscillations

C5

1000

µF

Supply setting

worse turn-OFF pop

C6 and C7

220

µF

Feedback input DC

decoupling

C8 and C9

0.1

µF

Frequency stability

Danger of oscillations

C10 and C11

1000

µFto

2200

µF

Output DC decoupling

Higher low-frequency

cut-off

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

(**) 220

µF in case of stand-by utilization.

Figure 2: Ouput Power vs. Supply Voltage

Figure 3: Ouput Power vs. Supply Voltage

TDA7262

4/8