TDA7407D Datasheet, PDF (12/34 Pages) STMicroelectronics – ADVANCED CAR SIGNAL PROCESSOR

TDA7407D
6 MULTIPATH DETECTOR
■ Internal 19kHz band pass filter
■ Programmable band pass and rectifier gain
■ two pin solution fully independent usable for external programming
■ selectable internal influence on Stereoblend
Table 9. ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
f_CMP Center Frequency of Multipath- stereodecoder locked on
19
KHz
Bandpass
G_BPMP Bandpass Gain
roduct(s) ^{GRECTMP Rectifier Gain}
solete^{roPduct(s) ICHMP Rectifier Charge Current}
b ^P _{IDISMP Rectifier Discharge Current}
Pilottono
bits D₂, D₁ configuration byte = 00
6
dB
bits D₂, D₁ configuration byte = 10
12
dB
bits D₂, D₁ configuration byte = 01
16
dB
bits D₂, D₁ configuration byte = 11
18
dB
bits D₇, D₆ configuration byte = 00
7.6
dB
bits D₇, D₆ configuration byte = 01
4.6
dB
bits D₇, D₆ configuration byte = 10
0
dB
bits D₇, D₆ configuration byte = 11
off
dB
bit D₅ configuration byte = 0
0.5
µA
bit D₅ configuration byte = 1
1.0
µA
0.5
1
1.5
mA
) ^{- O lete} Table 10. Quality Detector
t(s ^so Symbol
Parameter
c ^b _{A Multipath Influence Factor}
Test Condition
Addr. 12 / Bit 5+6
lete ^Pd^{ruocdt(us) - O B Noise Influence Factor}
Addr. 16 / Bit 1+2
Min. Typ. Max. Unit
00
0.7
dB
01
0.85
dB
10
1.00
dB
11
1.15
dB
00
15
dB
01
12
dB
10
9
dB
11
6
dB
bso Pro 6.1 DESCRIPTION OF THE AUDIOPROCESSORPART
O _{te 6.1.1 Input Multiplexer}
le _{■ CD quasi differential}
so _{■ Cassette stereo}
Ob^{■ Phone inverting}
■ AM mono
■ Stereodecoder input.
6.1.2 Input stages
Most of the input stages have remained the same as in preceeding ST audioprocessors with exception of
the CD inputs (see figure 8).In the meantime there are some CD players in the market having a significant
high source impedance which affects strongly the common-mode rejection of the normal differential input
stage. The additional buffer of the CD input avoids this drawback and offers the full common-mode rejec-
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