M52743BSP 데이터 시트보기 (PDF) - Renesas Electronics

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M52743BSP

I2C BUS Controlled 3-Channel Video Preamplifier

Renesas Electronics 

M52743BSP

VthCP Clamp Pulse Threshold Voltage

Turn down the SG5 input level gradually from 5.0 VP-P, monitoring the waveform output.

Measure the top level of input pulse when the output pedestal voltage turn decrease with unstable.

WCP Clamp Pulse Minimum Width

Decrease the SG5 pulse width gradually from 0.5 µs, monitoring the output. Measure the SG5 pulse width (a point of

1.5 V) when the output pedestal voltage turn decrease with unstable.

PDCH Pedestal Voltage Temperature Characteristics1

Measure the pedestal voltage at 25°C. The measured value is called PDC1.

Measure the pedestal voltage at temperature of −20°C.

The measured value is called PDC2.

Pedestal voltage temperature characteristics 1 is calculated by the equation below:

PDCH = PDC1 − PDC2

PDCL Pedestal Voltage Temperature Characteristics2

Measure the pedestal voltage at 25°C. The measured value is called PDC1.

Measure the pedestal voltage at temperature of 75°C.

The measured value is called PDC3.

Pedestal voltage temperature characteristics 2 is calculated by the equation below:

PDCL = PDC1 − PDC3

OTr OSD Pulse Characteristics1

Measure the time needed for the output pulse to rise from 10% to 90% (OTr) with an active probe.

OTf OSD Pulse Characteristics2

Measure the time needed for the output pulse to fall from 90% to 10% (OTf) with an active probe.

Oaj1 OSD Adjust Control Characteristics1

Measure the amplitude output at OUT (29, 32, 35). The measured value is called VOUT (29, 32, 35), and is treated as

Oaj1.

∆Oaj1 OSD Adjust Control Relative Characteristics1

Relative characteristics ∆Oaj1 is calculated by the equation below:

∆Oaj1 = VOUT (29) / VOUT (32),

VOUT (32) / VOUT (35),

VOUT (35) / VOUT (29)

Oaj2 OSD Adjust Control Characteristics2

Measuring condition and procedure are the same as described in Oaj1.

∆Oaj2 OSD Adjust Control Relative Characteristics2

Measuring condition and procedure are the same as described in ∆Oaj1.

REJ03F0193-0201 Rev.2.01 Mar 31, 2008

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