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MC44BC375J Datasheet(PDF) 10 Page - Freescale Semiconductor, Inc |
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MC44BC375J Datasheet(HTML) 10 Page - Freescale Semiconductor, Inc |
10 / 20 page MC44BC375/U/J/T Technical Data Characterization Measurement Conditions Video: 5 step Grey Scale- 1Vpk-pk. No Audio signal This is measured using a Rohde & Schwarz AMFS Demodulator in B/G (using a CCIR Rec. 567 weighting network, 100kHz to 5MHz band with sound trap, and envelope detection, and a Rohde & Schwarz UAF Video Analyzer. On line CCIR 330, the video analyzer DP measure consists of calculating the difference of the Chroma phase at the black level and the different chroma subcarrier phase angles at each step of the greyscale. The largest positive or negative difference indicates the distortion. The video analyzer method takes the worst step from the first 4 steps. Video Differential Gain Video: 5 step Grey Scale- 1Vpk-pk. No Audio signal This is measured using a Rohde & Schwarz AMFS Demodulator in B/G (using a CCIR Rec. 567 weighting network, 100kHz to 5MHz band with sound trap and envelope detection, and a Rohde & Schwarz UAF Video Analyzer. On line CCIR 330 shown below, the video analyzer DG measure consists of calculating the difference of the Chroma amplitude at the black level and the different amplitudes at each step of the greyscale. The largest positive or negative difference indicates the distortion. The video analyzer method takes the worst step from the first 4 steps. CCIR line330 corresponds to FCC line17inNTSC/Mstandard Video Modulation Depth No Audio signal Video: 10stepgreyscale This is measured using a HP8596E Spectrum Analyzer with a TV Trigger option, allowing demodulation and triggering on any specified TV Line. The analyzer is centred on the maximum peak of the Video signal and reduced to zero Hertz span in Linear mode to demodulate the Video carrier. The Modulation Depth is calculated as (A-B)/A x 100 in% Picture to Sound ratio No Video signal No Audio Signal “PS” bit set to 0 and 1 Measure in dBc sound carrier in reference to picture carrier (TVout_Ref) for “PS” bit=0 (PS=12dB typical) and for “PS” bit=1 (PS=16dB), Audio Modulation Depth - FM Modulation Device and Signals Set-up Measurement Set-up DIFF PHASE = * 100% the phase at position 0 the largest positive or negative difference 0 1 2 3 4 5 5-step Greyscale with Chroma subcarrier superimposed (not to scale), line CCIR 330. DIFF GAIN =* 100% the amplitude at position 0 the largest positive or negative difference A ( 6-10mV) B (0.6 - 3mV) TV Line Demodulated by Spectrum Analyzer-BG standard A(mV) B(mV) Picture carrier Sound carrier +5.5Mhz Fo Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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