Characterization Measurement Conditions

MC44BC375/U/J/T Technical Data

No Video signal

No Audio signal

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

third harmonic of channel frequency, resulting in the following spectrum.

Out of Band Spurious

No Video signal

No Audio signal

Measure in dBuV spurious levels at 0.25, 0.5, 0.75 and 1.5 times channel

frequency, resulting in the following spectrum

Measure from 40Mhz to 1Ghz

.

In Band Spurious / 4Mhz Crystal Spurious

No Video signal

No Audio signal

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

levels falling into video bandwidth Fo+/-5Mhz (15.125Khz & 31.25Khz

from reference dividers and 4Mhz from crystal).

Video Bandwidth

No audio

Video: 600mVpk-pk sinusoidal signal

inserted on the black level of active video

area.

The Video signal is demodulated on the spectrum analyzer, and the peak

level of the 100Khz signal is measured as a reference. The frequency is

then swept from 100Khz to 5Mhz, and then the difference in dBc from the

100Khz reference level is measured.

Weighted Video Signal to Noise

Video: 100% White video signal - 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.

The Video Analyzer measures the ratio between the amplitude of the

active area of the video signal (700mV) and the noise level in Vrms on a

video black level which is show below.

VideoS/N is calculated as 20 x log(700 /N) in dB

Unweighted Video Signal to Noise

Same as above with CCIR filter disabled. Same as above.

Video Differential Phase

Device and Signals Set-up

Measurement Set-up

Picture carrier

3rd harmonic

3Fo

Fo

2Fo

2nd harmonic

Picture carrier

Fo*3/2

Fo/2

Fo/4

Fo*3/4

Fo

Spurious

N

noise level in Vrms

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com