TDA7541 Datasheet, PDF (21/76 Pages) STMicroelectronics – AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system

TDA7541
Electrical specifications and characteristics
Table 8.
Stereo decoder section (continued)
(T_amb=25°C, V_CC1=V_CC2=V_CCMIX1=V_CCVCO=V_CCIF=8.5V, f_Xtal = 10.25 MHz,
V_MPX=500mV_rms mono, f=1kHz, deemphasis τ=50µs, in application circuit, unless otherwise
specified)
Item Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
31. Stereo blend and high cut control
31.1 LG_min Min. level gain
LG
31.2 LG_max Max. level gain
LG
31.3 LG_step Level gain step Resolution
31.4 VSBL_min Min. voltage for mono
SBC
31.5 VSBL_max Max. voltage for mono
SBC
31.6 VSBL_step Step resolution
SBC
31.7 VHCH_min Min. voltage for no highcut HCHT
31.8 VHCH_max Max.voltage for no highcut HCHT
31.9 VHCH_step Step resolution
HCHT
31.10
VHCL_min
Min. voltage for full high
cut
HCLT
31.11
VHCL_max
Max. voltage for full high
cut
HCLT
31.12 VHCL_step Step resolution
HCLT
32. Carrier and harmonic suppression at the output
32.1 a19 Pilot signal f=19kHz
32.2 a38 Subcarrier f=38kHz
32.3 a57 Subcarrier f=57kHz
32.4 a76 Subcarrier f=76kHz
33. Intermodulation ⁽¹⁾
33.1
a2
f_mod=10kHz, f_spur=1kHz
33.2
a3
f_mod=13kHz, f_spur=1kHz
34. Traffic radio ⁽²⁾
34.1 a57
35. SCA ⁽³⁾
Signal f=57kHz
35.1 a67 Signal f=67kHz
36. ACI – adjacent channel interference ⁽⁴⁾
36.1 a114 Signal f=114kHz
36.2 a190 Signal f=190kHz
37. FM noise blanker
37.1 V_TRMIN Min. trigger threshold ⁽⁵⁾
V_PEAK=0.8V, NBLT “111”
-0.3
7.75
0.25
24
53
3.5
37
61
7
0
8.25
0.55
29
58
4.2
42
66
8
0.3 dB
8.75 dB
0.85 dB
34 %V_REF1
63 %V_REF1
5 %V_REF1
47 %V_REF1
71 %V_REF1
9 %V_REF1
6 11 16 %VHCH
28 33 38 %VHCH
6.5 7.3 8.1 %VHCH
45 50
dB
75
dB
62
dB
90
dB
65
dB
75
dB
65 70
dB
75
dB
95
dB
84
dB
147
mV_OP
21/76