TDA7541 Datasheet, PDF (22/76 Pages) STMicroelectronics – AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system

Electrical specifications and characteristics
TDA7541
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
37.2
37.3
V_TRMAX Max. trigger threshold ⁽⁵⁾
Min. noise controlled
V_{TRNOISE trigger threshold}
V_PEAK=0.8V, NBLT “000”
V_PEAK=1.5V, NBCT “11”
280
mV_OP
450
mV_OP
Max. noise controlled
37.4 V_{TRNOISE trigger threshold}
V_PEAK=1.5V, NBCT “00”
1200
mV_OP
37.5
37.6
V_PEAK Peak voltage
V_PEAK Peak voltage
NBRR “00”, V_MPX=0mV
NBRR “00”, V_MPX=50mV,
f=150kHz
0.8
V
1.9
V
37.7 V_PEAK Peak voltage
NBRR “00”, V_MPX=200mV,
f=150kHz
3.5
V
Min. deviation dependent
37.8 V_{PEAKDEV peak voltage}
V_MPX=500mV, NBDC = 11 (“OFF”)
0.8
V
Max. deviation dependent
37.9 V_{PEAKDEV peak voltage}
V_MPX=500mV, NBDC= 00
2.0
V
Min. fieldstrength
37.10 V_PEAKFS ^controlled
peak voltage
V_MPX=0mV, V_LEVEL<< V_SBL
(fully mono), NBFC = 11 (“OFF”)
0.8
V
Max. fieldstrength
37.11 V_PEAKFS controlled
peak voltage
V_MPX=0mV, V_LEVEL<< V_SBL
(fully mono), NBFC = 00
2.0
V
37.12 T_S Min. blanking time
Signal HOLDN in testmode,
NBT = 00
38
μs
37.13 T_S Max. blanking time
Signal HOLDN in testmode,
NBT = 11
22
μs
37.14 SR_PEAK Noise rectifier charge
Signal PEAK in testmode,
NBPC=0
5
mV/μs
37.15 SR_PEAK Noise rectifier charge
Signal PEAK in testmode,
NBPC=1
12
mV/μs
37.16
V_RECTADJ
Noise rectifier discharge
adjustment
Signal PEAK in testmode,
NBRR=00
0.3
V/ms
37.17
V_RECTADJ
Noise rectifier discharge
adjustment
Signal PEAK in testmode,
NBRR=01
1.8
V/ms
37.18
V_RECTADJ
Noise rectifier discharge
adjustment
Signal PEAK in testmode,
NBRR=10
2.8
V/ms
37.19
V_RECTADJ
Noise rectifier discharge
adjustment
Signal PEAK in testmode,
NBRR=11
4
V/ms
37.20
V_ADJMP
Noise rectifier adjustment
by multipath
Signal PEAK in testmode,
V_MPTC=1V, NBSMP=0, NBMP=1,
NBRR=01
3
V/ms
22/76