E-TDA7461ND View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'E-TDA7461ND' PDF : 48 Pages View PDF
Stereo decoder part
4
Stereo decoder part
TDA7461
4.1
Stereo decoder feature
● No external components necessary
● PLL with adjustment free fully integrated VCO
● Automatic pilot dependent mono/stereo switching
● Very high suppression of intermodulation and interference
● Programmable roll-off compensation
● Dedicated RDS Softmute
● High cut and stereo blend characteristics programmable in a wide range
● Internal Noise blanker with threshold controls
● Multipath detector with programmable internal/external influence
● I2C bus control of all necessary functions
4.2
Stereo decoder electrical characteristics
Table 8.
.
Stereo decoder electrical characteristics
(VS = 9 V; de-emphasis time constant = 50 μs, VMPX = 500 mV, 75 kHz deviation, f = 1 kHz.
GI = 6 dB, Tamb = 25 °C; unless otherwise specified)
Symbol
Parameter
Test condition
Min. Typ. Max. Unit
VIN
Rin
Gmin
Gmax
GSTEP
SVRR
a
THD
MPX input level
Input gain = 3.5 dB
0.5 1.25
Input resistance
70 100 130
Minimum input gain
1.5 3.5 4.5
Max input gain
8.5 11 12.5
Step resolution
1.75 2.5 3.25
Supply voltage ripple rejection Vripple = 100 mV, f = 1 kHz
55
Max channel separation
30 50
Total harmonic distortion
0.02 0.3
VRMS
KΩ
dB
dB
dB
dB
dB
%
-S-----+-----N---
N
Signal plus noise to noise ratio S = 2 Vrms
80 91
dB
Mono/stereo switch
VPTHST1
VPTHST0
VPTHMO1
VPTHMO0
PLL
Pilot threshold voltage
Pilot threshold voltage
Pilot threshold voltage
Pilot threshold voltage
Δf/f
Capture range
for Stereo, PTH = 1
for Stereo, PTH = 0
for Mono, PTH = 1
for Stereo, PTH = 0
10 15 25
mV
15 25 35
mV
7
12 17
mV
10 19 25
mV
0.5
%
20/48
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