MC44BC375/U/J/T Technical Data

Characterization Measurement Conditions

Video: 5 step Grey Scale- 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.

On line CCIR 330, the video analyzer DP measure consists of calculating

the difference of the Chroma phase at the black level and the different

chroma subcarrier phase angles at each step of the greyscale. The

largest positive or negative difference indicates the distortion.

The video analyzer method takes the worst step from the first 4 steps.

Video Differential Gain

Video: 5 step Grey Scale- 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.

On line CCIR 330 shown below, the video analyzer DG measure consists

of calculating the difference of the Chroma amplitude at the black level

and the different amplitudes at each step of the greyscale. The largest

positive or negative difference indicates the distortion.

The video analyzer method takes the worst step from the first 4 steps.

CCIR line330 corresponds to FCC line17inNTSC/Mstandard

Video Modulation Depth

No Audio signal

Video: 10stepgreyscale

This is measured using a HP8596E Spectrum Analyzer with a TV Trigger

option, allowing demodulation and triggering on any specified TV Line.

The analyzer is centred on the maximum peak of the Video signal and

reduced to zero Hertz span in Linear mode to demodulate the Video

carrier.

The Modulation Depth is calculated as (A-B)/A x 100 in%

Picture to Sound ratio

No Video signal

No Audio Signal

“PS” bit set to 0 and 1

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

for “PS” bit=0 (PS=12dB typical) and for “PS” bit=1 (PS=16dB),

Audio Modulation Depth - FM Modulation

Device and Signals Set-up

Measurement Set-up

DIFF PHASE =

* 100%

the phase at position 0

the largest positive or negative difference

0

1

2

3

4

5

5-step Greyscale with Chroma subcarrier superimposed

(not to scale), line CCIR 330.

DIFF GAIN

the amplitude at position 0

the largest positive or negative difference

A ( 6-10mV)

B (0.6 - 3mV)

TV Line Demodulated by Spectrum Analyzer-BG standard

A(mV)

B(mV)

Picture carrier

Sound carrier

+5.5Mhz

Fo

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com