NTE7050 데이터 시트보기 (PDF) - NTE Electronics
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NTE7050 Datasheet PDF : 5 Pages
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AC Electrical Characteristics (Cont’d): (All parameters are measured in the circuit at nominal
supply voltage(VCC = 8.5V) and TA = +25°C)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
SDS Control
10dB Channel Separation
V4
– 1.0 – V
Full Stereo
V4
Channel Separation ≥ 26dB
– 1.2 – V
Full Mono
V4
Channel Separation ≥ 1dB
– 0.8 – V
Stereo/Mono Switch (R6 – 5 = 180k, Note 2)
For Switching to Stereo
VI
For Switching to Mono
VI
Hysteresis
∆VI
Carrier and Harmonic Suppression at the Output (Note 3)
– 14 20 mV
4 – – mV
– 4 – mV
Pilot Signal
α19
f = 19kHz, R6–5 = 180kΩ, Note 2 32 40 – dB
Subcarrier
α38
f = 38kHz
– 45 – dB
α57
f = 57kHz
– 50 – dB
α228 f = 228kHz
– 75 – dB
Intermodulation
Traffic Radio (VWF) Suppression
α2
α3
α57 (VWF)
fM = 10kHz, spurious signal,
fS = 1kHz, Note 4
fM = 13kHz, spurious signal,
fS = 1kHz, Note 4
f = 57kHz, Note 5
– 50 – dB
– 50 – dB
– 80 – dB
SCA (Subsidary Communications
Authorization)
α67
f = 67kHz, Note 6
– 70 – dB
Note 2. Also adjustable.
Note 3. Reference output voltage at 1kHz (measured channel R (Pin2)).
Note 4. Intermodulation suppression (BFC: Beat–Frequency Components):
α2 =
VO (signal) at 1kHz
VO (spurious) at 1kHz
:
fS = (2 x 10kHz) – 19kHz
α3 =
VO (signal) at 1kHz
VO (spurious) at 1kHz
:
fS = (3 x 13kHz) – 38kHz
measured with: 91% mono signal; fM = 10 or 13kHz; 9% pilot signal.
Note 5. Traffic ratio (VWF) suppression:
α57
(VWF)
=
VO
VO (signal) at 1kHz
(spurious) at 1kHz ±23Hz
measured with: 91% stereo signal; fM = 1kHz; 9% pilot signal; 5% traffic subcarrier
(f = 57kHz; 60% AM modulated with f mod. 23Hz).
Note 6. SCA (Subsidary Communications Authorization):
α67 =
VO (signal) at 1kHz
VO (spurious) at 9kHz
fS = (2 x 38kHz) – 67kHz
measured with: 81% mono signal; fM = 1kHz; 9% pilot signal; 10% SCA–subcarrier
(fS = 67kHz, unmodulated).
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