M52742ASP Просмотр технического описания (PDF) - MITSUBISHI ELECTRIC

Номер в каталоге

Компоненты Описание

производитель

M52742ASP

BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR

MITSUBISHI ELECTRIC  

PRELIMINARY NSootmicee:pTahriasmisentroict alimfiintsalasrpeescuifbicjeactitotno. change.

MITSUBISHI ICs (Monitor)

M52742ASP

BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR

FC1 Frequency characteristics1 (f=50MHz)

First, SG3 to 1MHz is as input signal. Input a resister that is about

2kΩ to offer the voltage at input pins (2, 6, 11) in order that the bot-

tom of input signal is 2.5V. Control the main contrast in order that

the amplitude of sine wave output is 4.0VP-P. Control the brightness

in order that the bottom of sine wave output is 2.0VP-P. By the same

way, measure the output amplitude when SG3 to 50MHz is as input

signal. The measured value is called VOUT (29, 32, 35). Frequency

characteristics FC1 (29, 32, 35) is calculated by the equation below:

FC1=20log

VOUT VP-P

(dB)

Output amplitude when inputted SG3 (1MHz):4VP-P

C.T.2 Crosstalk2 (f=50MHz)

Input SG3 (50MHz) to pin6 only, and then measure the waveform

amplitude output at OUT (29, 32, 35). The measured value is called

VOUT (29, 32, 35). Crosstalk C.T.2 is calculated by the equation

below:

C.T.2=20 log VOUT (29, 32) (dB)

VOUT (35)

C.T.2' Crosstalk2 (f=200MHz)

Measuring condition and procedure are the same as described in

C.T.2, expect SG3 to 200MHz.

∆FC1 Frequency relative characteristics1 (f=50MHz)

Relative characteristics ∆FC1 is calculated by the difference in the

output between the channels.

FC1' Frequency characteristics1 (f=200MHz)

Measuring condition and procedure are the same as described in

table, expect SG3 to 200MHz.

C.T.3 Crosstalk3 (f=50MHz)

Input SG3 (50MHz) to pin11 only, and then measure the waveform

amplitude output at OUT (29, 32, 35). The measured value is called

VOUT (29, 32, 35). Crosstalk C.T.3 is calculated by the equation

below:

C.T.3=20 log VOUT (29, 32) (dB)

VOUT (35)

∆FC1' Frequency relative characteristics1 (f=200MHz)

Relative characteristics ∆FC1' is calculated by the difference in the

output between the channels.

FC2 Frequency characteristics2 (f=200MHz)

SG3 to 1MHz is as input signal. Control the main contrast in order

that the amplitude of sine wave output is 1.0VP-P. By the same way,

measure the output amplitude when SG3 to 200MHz is as input

signal.

The measured value is called VOUT (29, 32, 35). Frequency

characteristics FC2 (29, 32, 35) is calculated by the equation below:

VOUT VP-P

FC2=20log Output amplitude when inputted SG3 (1MHz):4VP-P (dB)

∆FC2 Frequency relative characteristics2 (f=200MHz)

Relative characteristics ∆FC2 is calculated by the difference in the

output between the channels.

C.T.1 Crosstalk1 (f=50MHz)

Input SG3 (50MHz) to pin2 only, and then measure the waveform

amplitude output at OUT (29, 32, 35). The measured value is called

VOUT (29, 32, 35). Crosstalk C.T.1 is calculated by the equation

below:

C.T.1=20 log VOUT (29, 32) (dB)

VOUT (35)

C.T.1' Crosstalk1 (f=200MHz)

Measuring condition and procedure are the same as described in

C.T.1, expect SG3 to 200MHz.

C.T.3' Crosstalk3 (f=200MHz)

Measuring condition and procedure are the same as described in

C.T.3, expect SG3 to 200MHz.

Tr Pulse characteristics1 (4VP-P)

Control the main contrast (00H) in order that the amplitude of output

signal is 4.0VP-P.

Control the brightness (V30) in order that the Black level of output

signal is 2.0V.

Measure the time needed for the input pulse to rise from 10% to 90

% (Tr1) and for the output pulse to rise from 10% to 90% (Tr2) with

an active probe.

Pulse characteristics Tr is calculated by the equations below :

Tr = [(Tr2)2-(Tr1)2]

∆Tr Relative pulse characteristics1

Relative characteristics ∆Tr is calculated by the difference in the

output between the channels.

Tf Pulse characteristics2 (4VP-P)

Measure the time needed for the input pulse to fall from 90% to 10%

(Tf1) and for the output pulse to fall from 90% to 10% (Tf2) with an

active prove.

Pulse characteristics Tf is calculated by the equations below :

Tf = [(Tf2)2-(Tf1)2]

8

Share Link: