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MC44BC374T1 Datasheet(PDF) 11 Page - Freescale Semiconductor, Inc

Part No. MC44BC374T1
Description  PLL Tuned PAL/NTSC UHF and VHF Audio/Video High Integration Modulator IC
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Maker  FREESCALE [Freescale Semiconductor, Inc]
Homepage  http://www.freescale.com
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MC44BC374T1 Datasheet(HTML) 11 Page - Freescale Semiconductor, Inc

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Characterization Measurement Conditions
MC44BC374T1 Technical Data
12 Characterization Measurement Conditions
Device default configuration unless otherwise specified:
Peak White Clip enable
UHF oscillator ON
Sound and video modulators ON
Sound subcarrier frequency = 5.5Mhz
Sound Oscillator ON
Picture-to-sound carrier ratio = 12dB
Test pattern disabled
All test mode bits are ‘0’
Frequency from channel 21 to 69
RF Inputs / Output into 75ohm Load using a 75 to 50 ohm transformation. Video Input 1V pk-pk. Audio
pre-emphasis circuit engaged.
Device and Signals Set-up
Measurement Set-up
TVOUT output level
Video: 10 steps grey scale
No audio
Measured picture carrier in dBuV with the HP8596E Spectrum Analyzer
using a 75 to 50 ohm transformation, all cables losses and transformation
pads having been calibrated.
Measurement used as a reference for other tests: TVout_Ref
TVOUT output attenuation
“ATT” bit = 1
No Video signal
No Audio signal
Measure in dBc picture carrier at “ATT”=”1” with reference to picture
carrier at “ATT”=”0”.
Sound Subcarrier Harmonics
Video: 10 steps grey scale
No Audio signal
Measure in dBc second and third sound harmonics levels in reference to
picture carrier (TVout_Ref).
Picture carrier
Sound carrier
Sound
+5.5Mhz
Fo
+11Mhz +16.5Mhz
2nd harm
Sound
3rd harm
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com


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