M52775 查看數據表（PDF） - MITSUBISHI ELECTRIC
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M52775 Datasheet PDF : 34 Pages
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MITSUBISHI ICs (TV)
M52775FP
VIF, SIF, VIDEO, CHROMA, DEFLECTION FOR NTSC
ACC1
1. Input VS (eb=570mV:level+6dB) from pin 36 IN.
2. Measure the output amplitude at pin 20.
3. ACC1 is defined as follows:
ACC1=20log
Measured value (VP-P)
Cn1 (VP-P)
(dB)
ACC2
1. Input VS (input level:-20dB) from pin 36 IN.
2. Measure the output amplitude at pin 20.
3. ACC2 is defined as follows:
ACC2=20log
Measured value (VP-P)
Cn1 (VP-P)
(dB)
OV Chroma overload
1. Input VS (ec=800mVP-P:chroma+3dB) from pin 36 IN.
2. Measure the output amplitude at pin 20.
3. OL is defined as follows:
OL=20log
Measured value (VP-P)
Cn1 (VP-P)
(dB)
θR-Y P Demodulation phase
1. Input VS (ed=single chroma=ec+100kHz) from pin 36 IN.
2. V20 is the output amplitude at pin 20.
3. V18 is the output amplitude at pin 18.
4. R-YP is defined as follows:
θR-Y P=tan-1
V18×3.8
(V20×1.9)+45°
(deg)
CC Residual carrier leakage
Measure the element of 3.58MHz of the demodulated output in no-
input state.
TC1 Tint control 1, TC2 Tint control 2
1. Input VS (see the following figure) from pin 36 IN. Based on the
output voltage at pin 20, find the absolute angle as shown in the
following figure.
-180°
0°
90°
VikP Threshold color killer on
1. Input VS (level:variable) from pin 36 IN at input level 0dB.
2. Lower the input level whth monitoring the output amplitude at pin
20 and measure the input level when output amplitude isnot
found.
KillP Residual color leakage at killer on
1. Input VS (level:-45dB) from pin 36 IN.
2. Measure the output amplitude at pin 20.
APC1 APC pull-in range 1
1. Input VS (f=eb=ec=variable) from pin 36 IN.
2. Change the input signal frequency and measure the frequency
range from the point at which signal is output to pin 20 and to the
point that no signal is output to the pin. The reference value is
3.579545MHz.
R/B P Ratio of (R-Y/B-Y)
1. Input VS (eb=single chroma=ec+100kHz) from pin 36 IN.
2. V20 is the output amplitude at pin 20.
3. V18 is the output amplitude at pin 18.
4. R/B P is defined as follows:
R/B P=20log
V18 (VP-P)
V20 (VP-P)
(dB)
A
90°
B
GND
A
0°
B
θ
θ=tan-1 (B/A)
12
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