MC44BS373CADR2 datasheet(19/52 Pages) FREESCALE

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MC44BS373CA Data Sheet

Characterization Measurement Conditions

Picture Carrier Harmonics

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 dB

µV 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

1GHz

In-Band Spurious

No video signal

No audio signal

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

levels falling into video bandwidth starting from ±100 kHz from the picture

carrier up to ±5MHz.

Video Bandwidth

No audio

Video: 600-mVp-p 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 100-kHz signal is measured as a reference. The frequency is

then swept from 100 kHz to 5 MHz, and then the difference in dB from the

100-kHz reference level is measured.

Weighted Video Signal to Noise

Video: 100% white video signal, 1 Vp-p.

No audio signal

This is measured using a Rohde & Schwarz

AMFS UHF demodulator in B/G (using a

CCIR Rec. 567 weighting network),

100-kHz to 5-MHz 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 (700 mV) and the noise level in Vrms on a

video black level which is shown below.

Video S/N is calculated as 20 x log(700/N) in dB.

Table 24. Measurement Conditions (continued)

Device and Signal Set-Up

Measurement Set-Up

Picture carrier

3rd harmonic

3Fo

2Fo

2nd harmonic

Picture carrier

× 3/2

Fo/2

Fo/4

×3/4

Spurious

noise level in Vrms

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