TDA7407_07 Datasheet, PDF (14/46 Pages) STMicroelectronics – Advanced car signal processor

Stereo decoder part
3
Stereo decoder part
TDA7407
Table 6.
Symbol
Stereo decoder electrical characteristics
(V_S = 9V; de-emphasis time constant = 50μs,V_MPX = 500mV (75KHz deviation),
fm= 1KHz, Gv = 6dB. T_amb = 25°C; unless otherwise specified)
Parameter
Test condition
Min. Typ. Max. Unit
V_in
R_in
G_MIN
GMAX
MPX input level
Input resistance
Min. input gain
Max. input gain
GSTEP Step resolution
SVRR
Supply voltage ripple
rejection
α Max. channel separation
THD Total harmonic distortion
-^S-----+-----^N---
N
Signal plus noise to noise
ratio
G_v = 3.5dB
0.5 1.25
70 100 130
1.5 3.5 4.5
8.5 11 12.5
1.75 2.5 3.25
V_RMS
KΩ
dB
dB
dB
Vripple = 100mV; f = 1KHz 35 60
dB
30 50
dB
0.02 0.3
%
A-weighted, S = 2V_RMS
80 91
dB
Mono / stereo switch
V_PTHST1 Pilot threshold voltage
V_PTHST0 Pilot threshold voltage
V_PTHMO1 Pilot threshold voltage
V_PTHMO0 Pilot threshold voltage
PLL
for Stereo, PTH = 1
for Stereo, PTH = 0
for Mono, PTH = 1
for Mono, PTH = 1
10 15 25
mV
15 25 35
mV
7 12 17
mV
10 19 25
mV
Δf/f Capture range
0.5
%
De-emphasis and highcut
t_HC50 De-emphasis time constant
t_HC75 De-emphasis time constant
t_HC50 Highcut time constant
t_HC75 Highcut time constant
Stereo blend and highcut control
Bit 7, Subadr, 10 = 0,
V_LEVEL >> V_HCH
Bit 7, Subadr, 10 = 1,
V_LEVEL >> V_HCH
Bit 7, Subadr, 10 = 0,
V_LEVEL >> V_HCL
Bit 7, Subadr, 10 = 1,
V_LEVEL >> V_HCL
25 50 75
μs
50 75 100
μs
100 150 200
μs
150 225 300
μs
REF5V Internal reference voltage
T_CREF5V Temperature coefficient
L_Gmin Min. LEVEL gain
L_Gmax Max. LEVEL gain
4.7 5 5.3
V
3300
ppm
-1 0 1
dB
8 10 12
dB
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