MC44BS374T1D-R2 datasheet(16/34 Pages) FREESCALE

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MC44BS374T1/374T1A Advance Information

Characterization Measurement Conditions

Table 7. 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

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).

Second Harmonics of Chroma subcarrier

No audio

Video: a 700m Vpp 100 kHz 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.

Picture carrier

Sound carrier

Sound

+5.5MHz

+11MHz +16.5MHz

2nd harm

Sound

3rd harm

700mV pk-pk

Frequency

100kHz

Frequency

100Khz

700mVpkpk

Picture carrier

Sound

Chroma 2nd

+8.86MHz

+4.43MHz +5.5MHz

Harmonic

carrier

Chroma

carrier

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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