M52742ASP 데이터 시트보기 (PDF) - Renesas Electronics

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M52742ASP

BUS Controlled 3-Channel Video Preamp for CRT Display Monitor

Renesas Electronics 

M52742ASP

FC2 Frequency Characteristics2 (f = 200 MHz)

SG3 to 1 MHz is as input signal. Control the main contrast in order that the amplitude of sine wave output is 1.0 VP-P.

By the same way, measure the output amplitude when SG3 to 200 MHz 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:

FC2 = 20log

VOUT VP-P

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

(dB)

∆FC2 Frequency Relative Characteristics2 (f = 200 MHz)

Relative characteristics ∆FC2 is calculated by the difference in the output between the channels.

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

Input SG3 (50 MHz) to pin 2 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:

VOUT (29, 32)

C.T.1 = 20log

(dB)

VOUT (35)

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

Measuring condition and procedure are the same as described in C.T.1, expect SG3 to 200 MHz.

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

Input SG3 (50 MHz) to pin 6 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:

VOUT (29, 32)

C.T.2 = 20log VOUT (35) (dB)

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

Measuring condition and procedure are the same as described in C.T.2, expect SG3 to 200 MHz.

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

Input SG3 (50 MHz) to pin 11 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:

VOUT (29, 32)

C.T.3 = 20log

(dB)

VOUT (35)

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

Measuring condition and procedure are the same as described in C.T.3, expect SG3 to 200 MHz.

Tr Pulse Characteristics1 (4 VP-P)

Control the main contrast (00H) in order that the amplitude of output signal is 4.0 VP-P.

Control the brightness (V30) in order that the Black level of output signal is 2.0 V.

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.

REJ03F0192-0201 Rev.2.01 Mar 31, 2008

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