MC44BC375UAFC Freescale Semiconductor, MC44BC375UAFC Datasheet - Page 9

• Manufacturer Part Number: MC44BC375UAFC
• Description: IC MODULATOR AUD/VID VHF 20 QFN
• Manufacturer: Freescale Semiconductor
• Type: Modulatorr

Specifications of MC44BC375UAFC

• Applications: Set-Top Boxes
• Mounting Type: Surface Mount
• Package / Case: *
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Application Specific Products
Freescale Semiconductor
Table 9. Performance Measurement Test Set-Ups (continued)
No audio signal
Video: 700 mV
inserted on the black level of active video
area.This is generated using a Video
Generator and inserting the required
frequency from a RF Signal generator.
No video signal
No audio signal
No video signal
No audio signal
No video signal
No audio signal
No audio
Video: 600 mV
on the black level of active video area.
Frequency
4.43 MHz
Frequency
100kHz
Device and Signals Set-Up
(pp)
(pp)
100 kHz sinusoidal signal
sinusoidal signal inserted
700 mVpkpk
700mV pk-pk
In Band Spurious / 4 MHz Crystal Spurious
Chroma/Sound Intermodulation
Measure in dBc, in reference to picture carrier (RFout_Ref), intermodulation
product at channel frequency plus the sound carrier frequency (+5.5 MHz) minus
the chroma frequency (-4.43 MHz), resulting in the following spectrum.
Intermodulation product is at the channel frequency +1.07 MHz.
Measure in dBc, in reference to picture carrier (RFout_Ref), second and third
harmonic of channel frequency, resulting in the following spectrum.
Measure in dBµV spurious levels at 0.25, 0.5, 0.75 and 1.5 times channel
frequency, resulting in the following spectrum.
Measure from 40 MHz to 1.0 GHz
Measure in dBc, in reference to picture carrier (RFout_Ref), spurious levels
falling into video bandwidth Fo+/-5.0 MHz (15.125 KHz & 31.25 KHz from
reference dividers and 4 MHz from crystal).
The Video signal is demodulated on the spectrum analyzer, and the peak level
of the 100 KHz signal is measured as a reference. The frequency is then swept
from 100 KHz to 5.0 MHz, and then the difference in dBc from the 100 KHz
reference level is measured.
Picture Carrier Harmonics
Out of Band Spurious
Video Bandwidth
Picture carrier
Spurious
Picture carrier
Fo/4
Fo
Fo
+1.07 MHz
Chroma/Sound
Intermod.
Measurement Set-Up
2nd harmonic
Fo/2
Picture carrier
.
Fo*3/4
2Fo
Chroma
carrier
Fo
+4.43 MHz +5.5 MHz
3rd harmonic
3Fo
Fo*3/2
Sound
carrier
MC44BC375U
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