MM1130 查看數據表（PDF） - Mitsumi

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MM1130

NTSC → PAL Converter Monolithic IC MM1130

Mitsumi 

MITSUMI

NTSC PAL Converter MM1130

Input Signals

SG1

SG2

SG3

SG4

SG5

Color bar chroma signal f=4.433619MHz V=630mVP-P

C. SYNC signal 0V-5V

15.74kHz pulse wave f : frequency variation 0V-5V

Color bar chroma signal f : frequency variation V=630mVP-P

Continuous sine wave f : 4.433619MHz V=630mVP-P

SG3

SG4

5V

4.7µS

variable

0V

630mVp-p

Carrier frequency variable

Notes:

*1 Gain is calculated by 20log (Pin 8 level/Pin 1 level).

*2 Phase difference is difference between input and output phases (given B-Y axis as 0°.)

*3 Hn output is 1 horizontal output after input signal burst is shifted +45°. Hn+1 output is 1 horizontal output

after input signal burst is shifted +45°, and that signal is R-Y converted.

*4 DC step difference is the total of burst sampling step different during PAL conversion and 1H switching

step difference.

1H

1H

burst sampling step difference

burst sampling

1H switching step difference

*5 BGP, Hn/Hn + 1 Switching Timing

4.7µS

C.SYNC

BGP

t1

t2

t3

Hn/Hn+1

switching timing

*6 This is the smaller of frequency f and horizontal sync signal frequency (fH=15.73khz) difference when the

frequencies are separated sufficiently high and low, then brought closer, and the waveform locks.

*7 This is the smaller of frequency f and carrier frequency (fC=4.433619MHz) difference when the frequencies

are separated sufficiently high and low, then brought closer, and the waveform locks.

*8 Carrier leak is the 8.86MHz component level at Pin 12.

Vc1=20log (8.86MHz component/4.43MHz component) dB

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