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参数资料
| 型号： | LC74950BG |
| 厂商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PBGA96 |
| 封装： | 6 X 6 MM, FBGA-96 |
| 文件页数： | 24/37页 |
| 文件大小： | 350K |
| 代理商： | LC74950BG |
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LC74950BG
No.A1647-30/37
DC level adjustment specifications
The DC level is adjusted by adding BRADJ[6:0] to the Y signal or RGB signals subjected to gain adjustment
processing.
Non-linear gain adjustment + DC level adjustment
When CNLINE = 1 and BRADJ[6:0]<0x40 (minus), the output corresponding to the input near the saturation region is
made non-linear. When the non-linear gain adjustment parameter (CONPARA) obtained from the formula below is
less than the multiplier (RGB: (32 + GAIN_x[6:0])/64, YCbCr: (48 + GAIN_x[6:0])/64) that is used when the linear
gain is adjusted, the input is multiplied by the non-linear gain adjustment parameter, resulting in a non-linear output.
The non-linear start position and maximum non-linear output value can be adjusted using COFFSET[4:0].
CONPARA = (1023
9-bit video signal) × (64 + COFFSET[4:0])/64 BRADJ[6:0]/2
Similarly, when BNLINE = 1 and BRADJ[6:0]>0x40 (plus), the output corresponding to the input near the saturation
region is made non-linear. When the DC adjustment parameter (BRPARA), obtained from the formula below, is less
than BRADJ[6:0], the extent to which the output is to be non-linear is adjusted by adding the DC adjustment
parameter to the Y signal or RGB signals subjected to non-linear gain adjustment processing.
BRPARA = (127
non-linear gain output/16) × (64 + COFFSET[4:0])/64
The figure below shows the output obtained when the gain adjustment and DC level adjustment have been performed
(when GAIN_Y[6:0] = 63, COFFSET[4:0] = 8).
GAIN_Y=63 (AMP=1.73)
0
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1200
0
200
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INPUT(LSB)
OUTPUT(LSB)
INPUT
CNLINE=0
CNLINE=0, BNLINE=1, BRADJ=64
CNLINE=0, BNLINE=1, BRADJ=0
CNLINE=0, BNLINE=1, BRADJ=127
Input signal
Digital clamp level
Output signal
AMP
DC level adjustment value
Gain adjustment
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相关代理商/技术参数 |
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| LC74950BG-TLM-H | 功能描述:视频模拟/数字化转换器集成电路 RoHS:否 制造商:Texas Instruments 输入信号类型:Differential 转换器数量:1 ADC 输入端数量:4 转换速率:3 Gbps 分辨率:8 bit 结构: 输入电压:3.3 V 接口类型:SPI 信噪比: 电压参考: 电源电压-最大:3.45 V 电源电压-最小:3.15 V 最大功率耗散: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:TCSP-48 封装:Reel |
| LC74980W | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
| LC74981W | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
| LC74982W | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:LCD TV Scan Converter IC |
| LC749870W | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Silicon gate NTSC/PAL/SECAM Digital Video Decoder |
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