TDA7412 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TDA7412' PDF : 56 Pages View PDF
TDA7412
2.2 ELECTRICAL CHARACTERISTICS
VS = 9V, deemphasis time constant = 50µs, MPX input voltage VMPX = 500mV (75kHz deviation), modulation
frequency = 1kHz, input gain = 6dB, Tamb = 27°C, unless otherwise specified.
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
Vin MPX Input Level
Input Gain = 3.5dB
0.5
1.25 Vrms
Rin Input Resistance
70
100 130
kΩ
Gmin Min. Input Gain
1.5
3.5
4.5
dB
Gmax Max. Input Gain
8.5
11 12.5 dB
Gstep Step Resolution
1.75 2.5 3.25 dB
SVRR Supply Voltage Ripple Rejection Vripple = 100mV, f = 1kHz
55
dB
a
Max. Channel Separation
30
50
dB
THD Total Harmonic Distortion
fin=1kHz, mono
0.02 0.3
%
S + N Signal plus Noise to Noise Ratio A-weighted, S = 2Vrms
80
91
dB
N
MONO/STEREO-SWITCH
VPTHST1 Pilot Threshold Voltage
for Stereo, PTH = 1
VPTHST0 Pilot Threshold Voltage
for Stereo, PTH = 0
VPTHMO1 Pilot Threshold Voltage
for Mono, PTH = 1
VPTHMO0 Pilot Threshold Voltage
for Mono, PTH = 0
PLL
∆f/f Capture Range
DEEMPHASIS and HIGHCUT
τDeempFM Deemphasis Timeconstants FM VLEVEL >> VHCH
VLEVEL >> VHCH
VLEVEL >> VHCH
VLEVEL >> VHCH
MFM Highcut Timeconstant Multiplier FM VLEVEL << VHCL
τDeempAM Deemphasis Timeconstants AM VLEVEL >> VHCH
VLEVEL >> VHCH
VLEVEL >> VHCH
VLEVEL >> VHCH
MAM Highcut Timeconstant Multiplier AM VLEVEL << VHCL
REF5V Internal Reference Voltage
10
15
25
mV
15
25
35
mV
7
12
17
mV
10
19
25
mV
0.5
%
25
50
75
µs
44
62.5
80
µs
50
75
100
µs
70
100 130
µs
3
37.5
µs
47
µs
56
µs
75
µs
3.7
4.7
5
5.3
V
23/56
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