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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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STV223XD Datenblatt(PDF) 25 Page - STMicroelectronics |
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STV223XD Datenblatt(HTML) 25 Page - STMicroelectronics |
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25 / 76 page  STV223XD/224XC - ELECTRICAL CHARACTERISTICS 25/76 SIF AMPLIFIER Note 5: L standard Sc/Pc = -10 dB, Nyquist Pc = -6 dB, SIF input -4 dB with PIF input = 84 µV, BG standard Sc/Pc = - 13 dB, Nyquist Pc = -6 dB, SIF input -7 dB with PIF input = 85 µV. Note 6: This parameter is not tested during production. It is tested on the validation bench during the qualification phase. SIF AGC (FM) SIF AGC (AM) DEEMPHASIS Symbol Parameter Test Conditions Min. Typ Max. Unit VINSIF SIF Input Sensitivity - 3dB at AM/FMOUT Pin (see Note 5) AM output amplitude, FM subcarrier amplitude 55 40 µVRMS GRSIF Gain Control Range - 3dB to +1dB at AM/FMOUT Pin 60 dB CINSIF Differential Input Capacitance SIF Inputs (see Note 6) 1.5 2 2.5 pF RINSIF Differential Input Resistance SIF Inputs 1.5 2 2.5 k Ω Symbol Parameter Test Conditions Min. Typ Max. Unit IC Charging Current 2.4 mA ID Discharging Current 100 µA Symbol Parameter Test Conditions Min. Typ Max. Unit INORMAL Charging/Discharging Current Normal time constant ±6 µA IFAST Charging/Discharging Current Fast time constant ±2.4 mA FM DEMODULATOR Electrical parameter valid in both QSS and Intercarrier modes, unless otherwise specified. Symbol Parameter Test Conditions Min. Typ Max. Unit SIFMin Min. Broadcast Sound/Video Carri- er Ratio Intercarrier mode: SAW filter K2955M at SNR 35 dB -30 dB VOAF FM Audio Output Amplitude at AM/ FMOUT Pin FM dev = ±27kHz BGDKI FM dev = ±13.5kHz MN 400 500 630 mVRMS DFMX Maximum FM Deviation THD < 10% 170 kHz THD_FM Total Harmonic Distortion FM dev = ±27kHz BGDKI 0.3 1 % S/N Audio S/N Weighted according to CCIR468-4 Quasi-Peak 55 dB AMR Amplitude Modulation Rejection m = 30%, AF = 1 kHz 32 dB SVR Supply Voltage Rejection See Note 4 45 dB S/N vsvideo S/N versus picture content, Inter- carrier mode Intercarrier mode: SAW filter K2955M Black picture, White picture, 250 kHz squarewave 52 50 52 dB Symbol Parameter Test Conditions Min. Typ Max. Unit deemp-T1 De-emphasis Time Constant B,G,D,K,I standards 50 µs deemp-T2 De-emphasis Time Constant M, N, standards 75 µs |
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