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| TDA7540N Datasheet, PDF (21/76 Pages) STMicroelectronics – AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system (ISS) | |||
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TDA7540N
Electrical specifications
Table 8.
Stereodecoder electrical characteristics (continued)
(Tamb = 25°C, VCC1 = VCC2 = VCC3 = VCCST= VCCVCO = VCCMIX1 = VCCMIX2 = VCCIF1 = 8.5V,
VMPX = 500mVrms mono, f = 1kHz, deemphasis = 50µs, fXtal = 10.25MHz, in application
circuit, unless otherwise specified).
Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
VSBLmin
VSBLmax
VSBLstep
VHCHmin
VHCHmax
VHCHstep
VHCLmin
VHCLmax
VHCLstep
Min. voltage for mono
Max. voltage for mono
Step resolution
Min. voltage for no highcut
Max. Voltage for no highcut
Step resolution
Min. voltage for full high cut
Max. voltage for full high cut
Step resolution
SBC
SBC
SBC
VHCH
VHCH
VHCH
VHCL, MAXHC = 11
VHCL, MAXHC = 11
VHCL, MAXHC = 11
Carrier and harmonic suppression at the output
29
33 %VREF1
54
58
%VREF1
4.2
%VREF1
42
46 %VREF1
61
66
%VREF1
8
%VREF1
11
15 %VHCH
31
33
%VHCH
7.3
%VHCH
a19
Pilot signal f=19kHz
a38
Subcarrier f=38kHz
a57
Subcarrier f=57kHz
a76
Subcarrier f=76kHz
Intermodulation(1)
Vpilot = 50mVrms
50
dB
75
dB
62
dB
90
dB
a2
fmod=10kHz, fspur=1kHz
a3
fmod=13kHz, fspur=1kHz
Traffic radio(2)
65
dB
75
dB
a57
Signal f=57kHz
SCA - Subsidiary communications authorization(3)
70
dB
a67
Signal f=67kHz
ACI - adjacent channel interference(4)
75
dB
a114
a190
Signal f=114kHz
Signal f=190kHz
95
dB
84
dB
FM noise blanker
VTRMIN
VTRMAX
VTRSTEP
VTRNOISE
Min. trigger threshold (5)
Max. trigger threshold (5)
Trigger threshold step0)
Min. noise controlled trigger
threshold(5)
VTRNOISE
Max. noise controlled
trigger threshold(5)
VPEAK=0.8V, NBLTH
VPEAK=0.8V, NBLTH
VPEAK=1.5V, NBCTH
VPEAK=1.5V, NBCTH
147
280
19
450
1200
mVOP
mVOP
mVOP
mVOP
mVOP
21/76
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