M52779SP datasheet(13/37 Pages) MITSUBISHI

13 / 37 page

MITSUBISHI ICs (TV)

M52779SP

VIF, SIF, VIDEO, CHROMA, DEFLECTION FOR PAL/NTSC

ACC1

1. Input VS4P (eb=570mV:level+6dB) to VI IN.

2. Measure the output amplitude at pin 43.

3. ACC1 is deﬁned as follows:

ACC2

1. Input VS4P (input level:20dB) to VI IN.

2. Measure the output amplitude at pin 41.

3. ACC2 is deﬁned as follows:

OL Chroma overload

1. Input VS4P (ec=800mVP-P:chroma+3dB) to VI IN.

2. Measure the output amplitude at pin 41.

3. OL is deﬁned as follows:

VikP Threshold color killer on (PAL)

1. Input VS4P (level:variable) to VI IN at input level 0dB.

2. Lower the input level whth monitoring the output amplitude at pin

41 and measure the input level when output amplitude isnot

found.

KillP Residual color leakage at killer on (PAL)

1. Input VS4P (level:40dB) to VI IN.

2. Measure the output amplitude at pin 41.

APC1 APC pull-in range 1

1. Input VS4P (f=eb=ec=variable) to VI IN.

2. Change the input signal frequency and measure the frequency

range from the point at which signal is output to pin 41 and to the

point that no signal is output to the pin. The reference value is

4.433619MHz.

R/B P Ratio of (R-Y/B-Y)

1. Input VS4P (eb=single chroma=ec+50kHz) to VI IN.

2. V41 is the output amplitude at pin 41.

3. V43 is the output amplitude at pin 43.

4. R /B P is deﬁned as follows:

θR-Y P Demodulation phase

1. Input VS4P (ed=single chroma=ec+50kNz) to VI IN.

2. V41 is the output amplitude at pin 41.

3. V43 is the output amplitude at pin 43.

4. R-YP is deﬁned as follows:

CC Residual carrier leakage

Measure the element of 4.43MHz of the demodulated output in no-

input state.

DDH Offset of demodulated output by line

1. Input 4.2MHz CW (Vi=575mVP-P) to VI IN.

2. Measure the center DC voltage of output beat amplitude for two

lines at pins 41 and 43. The absolute value of the difference in

DC voltage is the difference of demodulated output on line.

Cn3, Cn4 Output signal amplitude3, 4 (NTSC)

1. Input SS3N to VI IN.

2. Cn3 and Cn4 are output amplitude measured at pins 41 and 43

respectively.

VikN Threshold color killer on (NTSC)

1. Input VS3N (level:variable) to VI IN at input level 0dB.

2. Lower the input level with monitoring the output amplitude at pins

41 and measure the input level when output amplitude is not

found.

KillN Residual color leakage at killer on (NTSC)

1. Input VS3N (level:-40dB) to VI IN.

2. Measure the output amplitude at pin 41.

APC2 APC Pull-in range 2

1. Input VS3N (f=eb=ec=variable) to VI IN.

2. Change the input signal frequency and measure the frequency

range from the point at which no signal is output to 41 pin and to

the point at which signal is output to the pin. (Pull-in state) The

reference value is 3.579545MHz.

R/B N Ratio of (R-Y/B-Y)

1. Input VS3N (eb=signal chroma=ec+50kHz) to VI IN.

2. V41 is the output amplitude at pin 41.

3. V43 is the output amplitude at pin 43.

4. R/B N is deﬁned as follows:

Measured value (VP-P)

ACC1=20log

Cn1 (VP-P)

(dB)

Measured value (VP-P)

ACC2=20log

Cn1 (VP-P)

(dB)

Measured value (VP-P)

OL=20log

Cn1 (VP-P)

(dB)

V43 (VP-P)

R/B P=20log

V41 (VP-P)

(dB)

V43

×3.8

θR-Y P=tan-1

V41

×1.9

+45 (deg)

GND

V43 (VP-P)

R/B N=20log

V41 (VP-P)

(dB)

M52779SP Datasheet(PDF) 13 Page - Mitsubishi Electric Semiconductor

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