TDA7406T View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TDA7406T' PDF : 49 Pages View PDF
TDA7406T
Table 2. ELECTRICAL CHARACTERISTICS (continued)
VS = 9V, de-emphasis time constant = 50µs, MPX input voltage VMPX = 500mV (75kHz deviation),
modulation frequency = 1kHz, input gain = 6dB, Tamb = 27°C, unless otherwise specified.
Symbol
Parameter
Test Conditions
Min. Typ. Max.
Unit
Intermodulation (Note 1)
α2
fmod=10kHz, fspur=1kHz
65
dB
α3
fmod=13kHz, fspur=1kHz
75
dB
Traffic Radio (Note 2)
α57 Signal f=57kHz
70
dB
SCA - Subsidiary Communications Authorization (Note 3)
α67 Signal f=67kHz
75
dB
ACI - Adjacent Channel Interference (Note 4)
α114 Signal f=114kHz
95
dB
α190 Signal f=190kHz
84
dB
Notes to the Characteristics
Note 1. Intermodulation Suppression
α 2 = V-----Vo---(-o-s--(--ps----ui--g-r--n-i--o-a--u--l--)s--(--)-a-(--t-a-1--t--k-1---Hk----H-z---)-z---) ;ƒs = (2 ⋅ 10kHz ) – 19kHz
α 3 = V-----Vo---(-o-s--(--ps----ui--g-r--n-i--o-a--u--l--)s--(--)-a-(--t-a-1--t--k-1---Hk----H-z---)-z---) ;ƒs = (3 ⋅ 13kHz ) – 38kHz
measured with: 91% pilot signal; fm = 10 kHz or 13 kHz.
Note 2. Traffic Radio (V.F.) Suppression
measured with: 91% stereo signal; 9% pilot signal; fm=1kHz; 5% subcarrier (f=57kHz, fm=23Hz AM, m=60%)
α57(V.W.F.) = -V----o---(--s----p-V---u-o--r-(--i-s-o--i-u-g---s-n---)a--(--la--)--t-(-1-a---k-t--1H----k-z--H--±---z2---)-3---k---H----z----)
Note 3. SCA (Subsidiary Communications Authorization)
measured with: 81% mono signal; 9% pilot signal; fm=1kHz; 10%SCA - subcarrier (fs = 67kHz, unmodulated).
α67 = -V----Vo---(-o-s--(--ps----ui--g--r-n-i--o-a---u-l--)s--(--)-a-(--t-a--1-t--9k----Hk----H-z---)z----) ;ƒs = (3 ⋅ 38kHz) – 67kH z
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