TDA7402 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TDA7402' PDF : 69 Pages View PDF
TDA7402
4
Stereo decoder part
Stereo decoder part
4.1
Stereo decoder part features
● 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-Soft Mute
● Highcut and stereo blend-characteristics programmable in a wide range
t(s) ● FM/AM noiseblanker with several threshold controls
● Multipath-detector with programmable internal/external influence
uc ● I2C-bus control of all necessary functions
Prod 4.2
Stereo decoder electrical characteristics
te VS = 9V, de-emphasis time constant = 50µs, MPX input voltage VMPX = 500mV (75kHz
le deviation), modulation frequency = 1kHz, input gain = 6dB, Tamb = 27°C, unless otherwise
o specified.
bs Table 7. Stereo decoder electrical characteristics
- O Symbol
Parameter
Test condition
t(s) Vin
c Rin
du Gmin
ro Gmax
P Gstep
te SVRR
ole a
MPX input level
Input resistance
Min. input gain
Max. input gain
Step resolution
Supply voltage ripple rejection
Max. channel separation
Input gain = 3.5dB
Vripple = 100mV, f = 1kHz
ObsTHD Total harmonic distortion
fin=1kHz, mono
Min.
70
1.5
8.5
1.75
30
Typ.
0.5
100
3.5
11
2.5
55
50
0.02
Max.
1.25
130
4.5
12.5
3.25
0.3
Unit
Vrms
kΩ
dB
dB
dB
dB
dB
%
S +N Signal plus noise to noise ratio
N
A-weighted, S = 2Vrms
80
91
dB
Mono/Stereo-switch
VPTHST1
VPTHST0
VPTHMO1
VPTHMO0
Pilot threshold voltage
Pilot threshold voltage
Pilot threshold voltage
Pilot threshold voltage
PLL
for stereo, PTH = 1
for stereo, PTH = 0
for mono, PTH = 1
for mono, PTH = 0
10
15
25
mV
15
25
35
mV
7
12
17
mV
10
19
25
mV
Δf/f Capture range
0.5
%
31/69
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