TDA7513T Datasheet, PDF (14/59 Pages) STMicroelectronics – SINGLE-CHIP FM/AM TUNER WITH STEREO DECODER AND AUDIO PROCESSOR

TDA7513T
4.3 STEREO DECODER.
Table 25. Stereo Decoder
(Vcc = 8V; deemphasis time constant = 50µs, VMPX = 305mVrms (75kHz deviation), fm= 1kHz, Gv = 4dB,
Tamb = 27°C; unless otherwise specified)
Symbol
Rin
GV
Parameter
Input Resistance FM
AM
Stereo decoder min
input gain
Test Condition
SVRR
a
THD
(S+N)/N
max
Supply Voltage Ripple Rejection
Max. channel Separation
Total Harmonic Distortion
Signal plus Noise to Noise Ratio
MONO/STEREO-SWITCH
VPTHST1 Pilot Threshold Voltage
VPTHST0 Pilot Threshold Voltage
VPTHMO1 Pilot Threshold Voltage
VPTHMOO Pilot Threshold Voltage
PLL
∆f/f
Lock Range
f0
Center
min
frequency
max
range
step
PILmax Maximum input pilot voltage
DEEMPHASIS and HIGHCUT
τHC50 Deemphasis Time Constant
τHC75 Deemphasis Time Constant
τHC50 Highcut Time Constant
τHC75 Highcut Time Constant
STEREOBLEND- and HIGHCUT-CONTROL
REF5V Internal Reference Voltage
LGmin Min. LEVEL Gain
LGmax Max. LEVEL Gain
LGstep LEVEL Gain Step Resolution
VSBLmin Min. Voltage for Mono
VSBLmax Max. Voltage for Mono
VSBLstep Step Resolution
VHCHmin Min. Voltage for NO Highcut
VHCHmax Max. Voltage for NO Highcut
VHCHstep Step Resolution
Vripple = 100mV; f = 1KHz
A-weighted, S = 2Vrms @
APout
for Stereo, PTH = 1
for Stereo, PTH = 0
for Mono, PTH = 1
for Mono, PTH = 0
VCO Vtuning fixed to
reference voltage
@TUNERIN
Bit 7, Subadr, 10 = 0,
VLEVEL >> VHCH
Bit 7, Subadr, 10 = 1,
VLEVEL >> VHCH
Bit 7, Subadr, 10 = 0,
VLEVEL >> VHCL
Bit 7, Subadr, 10 = 1,
VLEVEL >> VHCL
Min. Typ. Max. Unit
70
100 130
kΩ
1.4
2
2.6
kΩ
0.5
dB
2.25
dB
4.0
dB
5.75
dB
35
60
dB
30
45
dB
0.02 0.3
%
80
91
dB
15
mV
25
mV
12
mV
19
mV
-6
+6
%
328
kHz
619
kHz
9.4
kHz
276
mV
25
50
75
µs
50
75
100
µs
100 150 200
µs
150 225 300
µs
4.7
5
5.3
V
-1
0
1
dB
8
10
12
dB
0.3 0.67
1
dB
25
29
33 %REF5V
54
58
62 %REF5V
2.2
4.2
6.2 %REF5V
38
42
46 %REF5V
62
66
70 %REF5V
5
8.4
12 %REF5V
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