TDA7407D Datasheet, PDF (9/34 Pages) STMicroelectronics – ADVANCED CAR SIGNAL PROCESSOR

TDA7407D
carrier (f = 57kHz, fm = 23Hz AM, m = 60%)
α57(V.W > F.) = _V-----_O----₍--_s---_p^V---_u-^O--_r--_i⁽-_o-^s--_u-ⁱ-^g-_s--ⁿ-₎--₍^a--_a--^l-⁾_t--₁⁽--^a-_k--^t-_H-¹---^kz---^H_±---^z-₂--⁾-₃---_k---_H----_z---₎
3. SCA ( Subsidiary Communications Authorization ) measured with: 81% mono signal; 9% pilot signal;
fm = 1kHz; 10%SCA - subcarrier ( fs = 67kHz, unmodulated ).
α67 = _V----^V-_O---^O-₍--_s-⁽--_ps---_ui-^g--_r-ⁿ-_i-_o--^a-_u--^l-⁾_s--⁽-₎-^a-₍--^ta--¹-_t--^k9---^Hk---_H-^z--⁾-_z---₎ ; F_s =(2 x 38kHz) - 67kHz
4. ACI ( Adjacent Channel Interference ):
α114 = _V----^V-_O---^O-₍--_s-⁽--_ps---_ui-^g--_r-ⁿ-_i-_o-^a--_u--^l-⁾_s--⁽-₎-^a-₍--^ta--¹-_t--^k4---^Hk---_Hz---⁾-_z---₎ ; F_s = 110kHz - (3 x 38kHz)
t(s) ^{α114 = V----V-}O^---O-(^--s^-(--ps^---ui^-g--r^-n-i^-o^-a--u^--l-)s^--(-)^-a-(^--ta--1-t^--k4---Hk---Hz^---)-z^---) ^{; Fs = 186kHz - (5 x 38kHz)}
c _{measured with: 90% mono signal; 9% pilot signal; fm =1kHz; 1% spurious signal( fs = 110kHz or 186kHz,}
u _{unmodulated).}
Prod_t(s) ^{5 NOISE BLANKER PART}
te ^{c ■ internal 2nd order 140kHz high pass filter}
le ^{u ■ programmable trigger threshold}
so ^{rod ■ trigger threshold dependent on high frequency noise with programmable gain}
b ^{P ■ additional circuits for deviation and fieldstrength dependent trigger adjustment}
- ^{O te ■ very low offset current during hold time due to opamps wMOS inputs}
) ^{le ■ four selectable pulse suppression times}
t(s ^{o ■ programmable noise rectifier charge/discharge current}
uc Obs _{Table 8. ELECTRICAL CHARACTERISTICS (continued)}
rod ^{) - Symbol}
Parameter
P _t(s ^VTR Trigger Threshold ^{0) 1)}
Test Condition
meas. with V_PEAK = 0.9V
s^{OoblestoelePteroduc} _{VTRNOISE Noise Controlled Trigger}
Ob ^{Threshold 2)}
meas. with V_PEAK = 1.5V
NBT = 111
NBT = 110
NBT = 101
NBT = 100
NBT = 011
NBT = 010
NBT = 001
NBT = 000
NCT = 00
NCT = 01
Min.
(c)
(c)
(c)
(c)
(c)
(c)
(c)
(c)
(c)
(c)
Typ.
30
35
40
45
50
55
60
65
260
220
Max.
(c)
(c)
(c)
(c)
(c)
(c)
(c)
(c)
(c)
(c)
Unit
mV_OP
mV_OP
mV_OP
mV_OP
mV_OP
mV_OP
mV_OP
mV_OP
mV_OP
mV_OP
NCT = 10 (c) 180 (c) mV_OP
NCT = 11 (c) 140 (c) mV_OP
V_RECT Rectifier Voltage
V_MPX = 0mV
NRD ⁶⁾ = 00 ^{0.5 0.9 1.3}
V
V_MPX = 50mV; f = 150KHz
1.5 1.7 2.1
V
V_MPX = 200mV; f = 150KHz
2.2 2.5 2.9
V
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