參數(shù)資料
型號(hào)： M52779SP
廠商： Mitsubishi Electric Corporation
英文描述： VIF, SIF, VIDEO, CHROMA, DEFLECTION FOR PAL/NTSC
中文描述： 資料表格，應(yīng)力強(qiáng)度因子，視頻，撓度色度用于PAL / NTSC制式
文件頁數(shù)： 12/37頁
文件大?。?/td> 311K
代理商： M52779SP
MITSUBISHI ICs (TV)
M52779SP
VIF, SIF, VIDEO, CHROMA, DEFLECTION FOR PAL/NTSC
12
ELECTRICAL CHARACTERISTICS TEST METHOD
P/N Video S/N
1. Input SG3 and measure the rms value of output signal at pin 52.
2. P/N is defined as follows:
BW Video frequency characteristics
1. Input SG4 and set the frequency f2 to 37.9MHz so that the beat
element of 1MHz is output to pin 52.
2. Then set the applied voltage at pin 4 so that the beat element of
1MHz at pin 52 may be 100dB
μ
.
3. Decrease f2 to the level at which the beat element becomes 3dB
smaller than the element of 1MHz, and read the value at that
level.
Vin min. Input sensitivity
1. Decrease SG5 level until the video detector output is 3dB
smaller then the measured value of Parameter V3 “Video
detector output”.
Vin max. Maximum permissible input
1. Input 90dBu SG6.
2. VA is the output level at pin 52. Increase SG6 voltage until the
output at pin 52 becomes 3dB smaller than VA. The input levell at
that time is the maximum permissible input.
μ
AFTN AFT detector sensitivity (NEG)
V1HN Maximum AFT voltage (NEG)
V1LN Minimum AFT voltage (NEG)
See the following figure.
μ
AFTN is defined as follows:
IM Intermodulation
1. Adjust the applied voltage at pin 4 so that the lowest output
signal voltage at pin 52 is 2.2V.
2. Measure elements of 1.07MHz and 4.43MHz of output at pin 52.
3. IM is defined as follows:
ATT Maximum attenuation
1. Measure the element of 400Hz of output at pin 46.
2.
LIM Input limiting sensitivity
Decrease the input level of SG 18. Measure the input level when
the element of 400Hz at pin 46 is 3dB smaller than V
0AFM
(S6:
Maximum AF output (6.0M)).
AMR
1. Vam is the element of 400Hz at pin 46.
2. AMR is defined as follows:
AF S/N
1. Measure the noise (20Hz to 100kHz) of output at pin 46.
2. AF S/N is defined as follows:
0AFmax
AF S/N=20log
MeV
GEAu EXT Audio GAIN
Input SG22 at pin 47, and measure the output V
P-P
at pin 46.
Input signal V
P-P
GAIN=20log
Output signal V
P-P
Cn1 Output signal amplitude 1 (PAL)
Cn2 Output signal amplitude 2 (PAL)
1. Input SS4P to VI IN.
2. Measure output amplitude, Cn1 and Cn2, at pins 41 and 43
respectively.
V
0NEG
measured value (V
P-P
)
×
10
3
×
0.7
Measured value (mVrms)
P/N=20log
(dB)
P52
100dB
μ
1MHz
BW
3dB
P1
V1HN
V1LN
5.0V
3.0V
37.9Mz
39.9MHz
f0
f
f
μ
AFTN=
(5.0-3.0)
×
10
3
mV
f kHz
(mV/kHz)
2.2V
P52
IM=20logElement of 1.07MHz
(dB)
V
0AFmax
Measured value
ATT=20log
(dB)
V
0AFS
(mVrms)
Vam (mVrms)
AMR=20log
(dB)
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