TDA8566_6 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 06 — 15 October 2007 3 of 21
NXP Semiconductors TDA8566
2×40 W/2 stereo BTL car radio power amplifier
5. Block diagram

(1) Pin HEATTAB is available in TDA8566TH1 only.

Fig 1. Block diagram

CM
VA
(9×)
2.3 k
2.3
k
mute
switch
CM
VA
VA
1×
standby
reference
voltage
standby
switch
mute
reference
voltage
Vref mute
switch CLIP
(9×)
2.3 k
2.3
k
60
k
60
k
60
k
60
k
mute
switch
CM
VA
(9×)
2.3 k
2.3
k
mute
switch
CM
VA

TDA8566

VP2
VP1
PGND2 PGND1
OUT2
OUT2+
OUT1
OUT1+
IN1
IN1+
IN2
IN2+
SGND
HEATTAB(1)
n.c.
DIAG
MODE
CLIP
mgu358
(9×)
2.3 k
2.3
k
mute
switch
DIAG