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TDA7401-TDA7401D
DIGITALLY CONTROLLED AUDIO PROCESSOR WITH LOUDSPEAKERS EQUALIZER
gerTpra'
TDA7401
DIGITALLY CONTROLLED AUDIO PROCESSOR
WITH LOUDSPEAKERS EQUALIZER
GAIN CONTROL
n DIRECT MUTE PIN
n FULLY PROGRAMMABLE VIA IZC BUS
DESCRIPTION
The TDA7401 is an upgrade of the TDA7435
audioprocessor.
Due to a highly linear signal processing, using
CMOS-switching techniques very low distortion
and very low noise are obtained.
Second order high pass and low pass filters with
programmable corner frequencies provide the
FOUR HIGH PASS CHANNELS
ONE STEREO LOW PASS CHANNEL WITH
loudspeaker equalization.
BLOCK DIAGRAM
ORDERING NUMBER: TDA7401D
Very low DC stepping is obtained by using a
BICMOS technology.
MUTE SDA SCL DGND AGND CREF VCC
T3 TZTTZGTZS T24 T23 T28
HP FL1
HP FL2
HP FILTER
HP FRI
HP FR2
HP FILTER
HP RL1
HP RL2
HP FILTER
HP RRI
HP RR2
HP FILTER
Pc BUS SUPPLY [>1-2o OUT REF
_ () HP FL OUT
rs, 0 HP FROUT
_ t) HP RL OUT
tss. t) HP RR OUT
AUX1INL0-
AUX1INRO-
+20l-79dB
-l>-''o AUX2 OUTL
-1>-'-'o AUX2OUTR
D98A U822A
January 1999
TDA7401
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
Vs Operating Supply Voltage 10.5 V
Tamb Operating Ambient Temperature MO to 85 "C
Tstg Storage Temperature Range -55 to 150 'C
PIN CONNECTION
AUX1INLCE1 V 28 :DvCC
AUX1IN R CE 2 27 CIC) SDA
MUTE CE 3 26 ID SCL
CR1 CE 4 25 ID DGND
CL1 CE 5 24 ID AGND
CL2 CE 6 23 D CREF
CR2 CE 7 22 CIC) HP FL1
AUX2OUTR CE 8 21 ID HPFL2
AUX2OUTL CE 9 20 CIC] HPFR1
HP FLOUT CI: 10 19 D HP FR2
HPFROUT (j: 11 18 D HPRL1
OUTREF G: 12 17 CIC) HP RL2
HP RLOUT CE 13 16 D HP RR1
HP RR OUT CI: 14 15 CIC] HP RR2
D98AU823A
THERMAL DATA
Symbol Parameter Value Unit
Re, j-amto Thermal Resistance Junction-pins 65 °CNV
QUICK REFERENCE DATA
Symbol Parameter Min. Typ. Max. Unit
Vs Supply Voltage 6 9 10.2 V
VCL Max. inputsignal handling 2.1 2.6 Vrms
THD Total Harmonic Distortion V = 1Vrms f= 1KHz 0.01 0.08 %
S/N Signal to Noise Ratio 106 dB
Sc Channel Separation f = 1KHz -80 100 dB
VREF Reference Voltage Output (pin 12) 4.2 4.5 4.8 V
2/10 £77
