TDA7513T Datasheet, PDF (15/59 Pages) STMicroelectronics – SINGLE-CHIP FM/AM TUNER WITH STEREO DECODER AND AUDIO PROCESSOR

TDA7513T
Table 25. Stereo Decoder (continued)
(Vcc = 8V; deemphasis time constant = 50µs, VMPX = 305mVrms (75kHz deviation), fm= 1kHz, Gv = 4dB,
Tamb = 27°C; unless otherwise specified)
Symbol
Parameter
VHCLmin Min. Voltage for FULL Highcut
VHCLmax Max. Voltage for FULL Highcut
VHCLstep Step Resolution
Carrier and harmonic suppression at the output
α19 Pilot Signal f = 19KHz
α38 Subcarrier f = 38KHz
α57 Subcarrier f = 57KHz
α76 Subcarrier f = 76KHz
Test Condition
Min.
12
28
2.2
Typ.
17
33
4.2
Max.
22
38
6.2
Unit
%VHCH
%VHCH
%VHCH
40
50
dB
75
dB
62
dB
90
dB
4.4 NOISE BLANKER
Table 26. Noise Blanker
Symbol
Parameter
Test Condition
VTR Trigger Threshold 0) 1) meas. with V_PEAK = 0.9V NBT = 111
NBT = 110
NBT = 101
NBT = 100
NBT = 011
NBT = 010
NBT = 001
NBT = 000
VTRNOISE Noise Controlled
Trigger
threshold ²⁾
meas. with VPEAK = 1.5V NCT = 00
NCT = 01
NCT = 10
NCT = 11
VRECT Rectifier Voltage
VMPX = 0mV
NRD 6) = 00
V_MPX = 50mV; f = 150KHz
VMPX = 200mV; f = 150KHz
VRECT DEV deviation dependent
rectifier Voltage 3)
meas. with VMPX =
800mV (75KHz dev.)
OVD = 11
OVD = 10
OVD = 01
OVD = 00
VRECT FS
Fieldstrength Controlled
Rectifier Voltage 4)
Rectifier Voltage ₄₎
V_MPX = 0mV
V_LEVEL << V_SBL
(fully mono)
FSC = 11
FSC = 10
FSC = 01
FSC = 00
TS Suppression Pulse
Duration 5)
Signal HOLDN
in Testmode
BLT = 00
BLT = 10
BLT = 01
BLT = 00
Min.
(c)
(c)
(c)
(c)
(c)
(c)
(c)
(c)
(c)
(c)
(c)
(c)
0.5
1.5
2.2
0.5
0.9
1.7
2.5
0.5
0.9
1.7
2.1
Typ. Max. Unit
30
( c ) mV
35
( c ) mV
40
( c ) mV
45
( c ) mV
50
( c ) mV
55
( c ) mV
60
( c ) mV
65
( c ) mV
260 ( c ) mV
220 ( c ) mV
180 ( c ) mV
140 ( c ) mV
0.9
1.3
V
1.7
2.1
V
2.5
2.9
V
0.9
1.3
V
1.2
1.5
V
2
2.3
V
2.8
3.1
V
0.9
1.3
V
1.4
1.5
V
1.9
2.3
V
2.4
3.1
V
38
µs
32
µs
25.5
µs
22
µs
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