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TDA7564
September 2003
■ DMOS POWER OUTPUT
■ NON-SWITCHING HI-EFFICIENCY
■
HIGH OUTPUT POWER CAPABILITY 4x28W/4
Ω
@ 14.4V, 1KHZ, 10% THD, 4x40W EIAJ
■ MAX. OUTPUT POWER 4x72W/2Ω
■ FULL I
2
C BUS DRIVING:
–ST-BY
– INDEPENDENT FRONT/REAR SOFT PLAY/
MUTE
– SELECTABLE GAIN 26dB - 12dB (FOR
LOW NOISE LINE OUTPUT FUNCTION)
– HIGH EFFICIENCY ENABLE/DISABLE
–I
2
C BUS DIGITAL DIAGNOSTICS
■ FULL FAULT PROTECTION
■ DC OFFSET DETECTION
■ FOUR INDEPENDENT SHORT CIRCUIT
PROTECTION
■ CLIPPING DETECTOR (2% - 10%)
PROTECTION
DESCRIPTION
The TDA7564 is a new BCD technology QUAD
BRIDGE type of car radio amplifier in Flexiwatt25
package specially intended for car radio applica-
tions. Thanks to the DMOS output stage the
TDA7564 has a very low distortion allowing a clear
powerful sound. Among the features, its superior
efficiency performance coming from the internal
exclusive structure, makes it the most suitable de-
vice to simplify the thermal management in high
power sets.The dissipated output power under av-
erage listening condition is in fact reduced up to
50% when compared to the level provided by con-
ventional class AB solutions.This device is
equipped with a full diagnostics array that commu-
nicates the status of each speaker through the I
2
C
bus.The possibility to control the configuration and
behaviour of the device by means of the I
2
C bus
makes TDA7564 a very flexible machine.
ORDERING NUMBER: TDA7564
FLEXIWATT25
MULTIFUNCTION QUAD POWER AMPLIFIER
WITH BUILT-IN DIAGNOSTICS FEATURES
BLOCK DIAGRAM
I2CBUS
THERMAL
PROTECTION
& DUMP
REFERENCE
CD_OUT
DATACLK
OUT RF+
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
CLIP
DETECTOR
MUTE1 MUTE2
12/26dB
VCC2VCC1
12/26dB
12/26dB
12/26dB
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
OUT RF-
OUT RR+
OUT RR-
OUT LF+
OUT LF-
OUT LR+
OUT LR-
AC_GND RF RR LF
PW_GND
LR
IN LR
S_GNDTABSVR
IN LF
IN RR
IN RF
D00AU1211
MULTIPOWER BCD TECHNOLOGY
MOSFET OUTPUT POWER STAGE
Obsolete Product(s) - Obsolete Product(s)
Obsolete Product(s) - Obsolete Product(s)
