M52743BSP 데이터 시트보기 (PDF) - Renesas Electronics

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M52743BSP

I2C BUS Controlled 3-Channel Video Preamplifier

Renesas Electronics 

M52743BSP

VB1 Brightness Control Characteristics1

Measure the DC voltage at OUT (29, 32, 35) with a voltmeter. The measured value is called VOUT (29, 32, 35), and is

treated as VB1.

∆VB1 Brightness Control Relative Characteristics1

Relative characteristics ∆VB1 is calculated by the difference in the output between the channels.

∆VB1 = VOUT (29) − VOUT (32),

VOUT (32) − VOUT (35),

VOUT (35) − VOUT (29)

VB2 Brightness Control Characteristics2

Measuring condition and procedure are the same as described in VB1.

∆VB2 Brightness Control Relative Characteristics2

Measuring condition and procedure are the same as described in ∆VB1.

VB3 Brightness Control Characteristics3

Measuring condition and procedure are the same as described in VB1.

∆VB3 Brightness Control Relative Characteristics3

Measuring condition and procedure are the same as described in ∆VB1.

FC1 Frequency Characteristics1 (f = 50 MHz)

First, SG3 to 1 MHz is as input signal. Input a resister that is about 2 kΩ to offer the voltage at input pins (2, 6, 11) in

order that the bottom of input signal is 2.5 V. Control the main contrast in order that the amplitude of sine wave output

is 4.0 VP-P. Control the brightness in order that the bottom of sine wave output is 2.0 VP-P. By the same way, measure

the output amplitude when SG3 to 50 MHz 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

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

(dB)

∆FC1 Frequency Relative Characteristics1 (f = 50 MHz)

Relative characteristics ∆FC1 is calculated by the difference in the output between the channels.

FC1' Frequency Characteristics1 (f = 150 MHz)

Measuring condition and procedure are the same as described in FC1, expect SG3 to 150 MHz.

∆FC1' Frequency Relative Characteristics1 (f = 150 MHz)

Relative characteristics ∆FC1' is calculated by the difference in the output between the channels.

FC2 Frequency Characteristics2 (f = 150 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 150 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 = 150 MHz)

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

REJ03F0193-0201 Rev.2.01 Mar 31, 2008

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