TDA7561
MULTIFUNCTION QUAD POWER AMPLIFIER
WITH BUILT-IN DIAGNOSTICS FEATURES
s
s
s
s
s
s
s
s
s
DMOS POWER OUTPUT
HIGH OUTPUT POWER CAPABILITY 4x25W/
4W @ 14.4V, 1KHZ, 10% THD, 4x35W EIAJ
MAX. OUTPUT POWER 4x60W/2W
FULL I2C BUS DRIVING:
鈥?ST-BY
鈥?INDEPENDENT FRONT/REAR SOFT PLAY/
MUTE
鈥?SELECTABLE GAIN 26dB - 12dB (FOR LOW
NOISE LINE OUTPUT FUNCTION)
鈥?I
2
C BUS DIGITAL DIAGNOSTICS
FULL FAULT PROTECTION
DC OFFSET DETECTION
FOUR INDEPENDENT SHORT CIRCUIT
PROTECTION
CLIPPING DETECTOR
ESD PROTECTION
MULTIPOWER BCD TECHNOLOGY
MOSFET OUTPUT POWER STAGE
FLEXIWATT25
DESCRIPTION
The TDA7561 is a new BCD technology QUAD
BRIDGE type of car radio amplifier in Flexiwatt25
BLOCK DIAGRAM
CLK
DATA
package specially intended for car radio applications.
Thanks to the DMOS output stage the TDA7561 has
a very low distortion allowing a clear powerful
sound.This device is equipped with a full diagnostics
array that communicates the status of each speaker
through the I
2
C bus.The possibility to control the con-
figuration and behaviour of the device by means of
the I
2
C bus makes TDA7561 a very flexible machine.
V
CC1
V
CC2
CD_OUT
REFERENCE
THERMAL
PROTECTION
& DUMP
I2C BUS
MUTE1 MUTE2
CLIP
DETECTOR
IN RF
F
OUT RF+
12/26dB
OUT RF-
R
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
OUT RR+
12/26dB
OUT RR-
F
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
OUT LF+
12/26dB
OUT LF-
R
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
OUT LR+
12/26dB
OUT LR-
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
SVR
D00AU1229
IN RR
IN LF
IN LR
AC_GND
RF
RR
LF
LR
TAB
PW_GND
S_GND
December 2002
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