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MC44CC373CAS 数据表(PDF) 8 Page - Freescale Semiconductor, Inc |
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MC44CC373CAS 数据表(HTML) 8 Page - Freescale Semiconductor, Inc |
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8 / 28 page  Digital Home 8 Freescale Semiconductor MC44CC373 Table 7. Video Performance Characteristics Parameter Test Conditions(1) 1. See Performance Measurement Test Set-ups, Table 22. Min Typ Max Unit Type Video bandwidth Reference 0 dB at 100 kHz, measured at 5 MHz. −0.5 0.1 0.5 dB C Video input level 75 Ω load — 1.0 1.5 VCVBS D Video input current 8 10 12 μA A Video input impedance 75 92 110 K Ω A Peak White Clip Video Modulation depth for video=1.4 VCVBS at default (01) PWC level 90.5 94 97.5 % B Video S/N No sound modulation,100% white video. Using CCIR Rec.567 weighting filter. 53 55 — dB C Differential Phase +5 — −5 deg C Differential Gain PWC bit set to 0. CCIR Test Line 310, worst of first 4 out of 5 steps. −5 — 5 % C Luma/Sync ratio Input ratio 7.0:3.0 6.8/3.2 — 7.2/2.8 — B PAL video modulation depth (SYSL = 0) 1.0 Volt Peak-to-Peak input. 75 83 88 % B SECAM video modulation depth (SYSL = 1) Gain set to default 90 96 99 % B Table 8. Audio Performance Characteristics Parameter Test Conditions(1) 1. See Performance Measurement Test Set-ups, Table 22. Min Typ Max Unit Type Picture-to-Sound ratio PS bit 0 setting 9 — 19 dB A Audio modulation index Using specific pre-emphasis circuit, audio input level=200 mVrms-audio frequency=1 kHz AM modulation: SECAM Fs=6.5MHz 76 80 86 % A FM modulation: Fs=5.5, 6 or 6.5MHz 100% modulation= ±50 kHz FM deviation 95 100 104 % A FM modulation: NTSC Fs=4.5MHz 100% modulation= ±25 kHz FM deviation 95 100 104 % A Audio input impedance 60 71 80 K Ω A Audio Frequency response Reference 0dB at 1 kHz, using specified pre-emphasis circuit, measure from 50 Hz to 15 kHz −2.5 — +2.0 dB C Audio Frequency response No pre-emphasis. Measure from 50 Hz to 50 kHz ±0.5 — +2.0 dB C Audio Distortion FM (THD only) At 1 kHz, 100% modulation ( ±50 kHz). Pre-emphasis. No video. — 0.5 1 % C Audio Distortion AM (THD only) At 1 kHz, 100% modulation Pre-emphasis. No video — 1.5 2.5 % C Audio S/N with Sync Buzz FM Ref 1 kHz, 50% modulation ( ±25 kHz) EBU color bars Video signal, using CCIR 468.2 weighting filter. Pre-emphasis. 50 54 — dB C Audio S/N with Sync Buzz AM Reference 1 kHz, 85% modulation Video input EBU color bar 75% Audio BW 40 Hz - 15 kHz Weighting filter CCIR 468-2. Pre-emphasis. 45 50 — dB C Total Harmonic Distortion (THD) No Pre-emphasis — — 0.1 % C Signal-to-Noise Ratio (SNR) No Pre-emphasis. 50 Hz to 50 kHz BW 58 — — dB C |
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