TDA7294S_05 Datasheet, PDF (5/16 Pages) STMicroelectronics – 100V - 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY

Figure 4. Typical Application P.C. Board and Component Layout (scale 1:1)
TDA7294S
3 Application Suggestions (see Test and Application Circuits of the Fig. 2)
The recommended values of the external components are those shown on the application circuit of Figure
2. Different values can be used; the following table can help the designer.
Table 6. Application Suggestions
COMPONENTS
R1 (*)
R2
R3 (*)
R4
R5
C1
C2
C3
SUGGESTED
VALUE
22k
680Ω
22k
22k
10k
0.47µF
22µF
10µF
PURPOSE
INPUT RESISTANCE
CLOSED LOOP GAIN
SET TO 30dB (**)
ST-BY TIME
CONSTANT
MUTE TIME
CONSTANT
INPUT DC
DECOUPLING
FEEDBACK DC
DECOUPLING
MUTE TIME
CONSTANT
LARGER THAN
SUGGESTED
INCREASE INPUT
IMPEDANCE
DECREASE OF GAIN
INCREASE OF GAIN
LARGER ST-BY
ON/OFF TIME
LARGER MUTE
ON/OFF TIME
LARGER MUTE
ON/OFF TIME
SMALLER THAN
SUGGESTED
DECREASE INPUT
IMPEDANCE
INCREASE OF GAIN
DECREASE OF GAIN
SMALLER ST-BY ON/
ON/OFF TIME;
POP NOISE
SMALLER MUTE
ON/OFF TIME
HIGHER LOW
FREQUENCY
CUTOFF
HIGHER LOW
FREQUENCY
CUTOFF
SMALLER MUTE
ON/OFF TIME
5/16