MC44BC375/U/J/T Technical Data

Characterization Measurement Conditions

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

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).

Second Harmonics of Chroma subcarrier

No audio

Video: a 700mVpk-pk 100Khz sinusoidal

signal is inserted on the black level of

active video area.

Measure in dBc, in reference to picture carrier (TVout_Ref), second

harmonic of chroma at channel frequency plus 2 times chroma

frequency, resulting in the following spectrum.

Chroma/Sound intermodulation

No audio signal

Video: 700mVpk-pk 100Khz sinusoidal

signal inserted on the black level of

active video area.This is generated using

a Rohde & Schwarz Video Generator

SAF and inserting the required frequency

from a RF Signal generator.

Measure in dBc, in reference to picture carrier (TVout_Ref),

intermodulation product at channel frequency plus the sound carrier

frequency (+5,5Mhz) minus the chroma frequency (-4,43Mhz), resulting

in the following spectrum.

Intermodulation product is at the channel frequency +1,07Mhz.

Picture Carrier Harmonics

Picture carrier

Sound carrier

Sound

+5.5Mhz

Fo

+11Mhz +16.5Mhz

2nd harm

Sound

3rd harm

700mV pk-pk

Frequency

100kHz

Frequency

100Khz

700mVpkpk

Picture carrier

Sound

Chroma 2nd

+8.86Mhz

Fo

+4.43Mhz +5.5Mhz

Harmonic

carrier

Chroma

carrier

700mV pk-pk

Frequency

100kHz

Frequency

4.43Mhz

700mVpkpk

Picture carrier

Chroma/Sound

+1.07Mhz

Fo

Intermod.

Sound

+4.43Mhz +5.5Mhz

carrier

Chroma

carrier

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com