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参数资料
| 型号： | TC90A44P |
| 元件分类： | 信号分离 |
| 英文描述： | Y/C SEPARATOR IC, PDIP16 |
| 封装： | 0.300 INCH, 2.54 MM PITCH, PLASTIC, DIP-16 |
| 文件页数： | 7/11页 |
| 文件大小： | 213K |
| 代理商： | TC90A44P |
TC90A44P,45P/F
2001-01-16
5/11
FUNCTION BLOCK DESCRIPTIONS
(1) Input clamp (CLAMP)
This is sync tip clamp circuit for composite signal.
This circuit makes feedback so that the min. data after A / D converter at Y / C separation equal to internal DC
bias level.
(2) A / D converter (ADC)
This is high speed series-parallel 8 bit A / D converter (Dynamic Range: 1.0V). Recommendable Input level is
0.75 Vp-p (Sync tip~white 100%).
(3) Line memory
This block is DRAM line memory for 1 H delay.
(4) Band-pass filter (BPF)
This filter extracts the signal of chrominance band from composite video signal. The center frequency is fsc.
(5) Dynamic comb filter (DCF)
This block is logical comb filter to extract the chrominance signal. Filtering logic applies a correlation of two
lines to reduce color dot crawl and cross color.
(6) Color killer circuit (KILLER)
This block is applied for black and white (B / W) signal regardless of have color burst or no color burts. When
pin 10 (KILLER) is “H ”, logic stop Y / C separation and output composite video signal from pin 14 (YOUT).
(7) PLL (4 times multiply clock generator)
This block is 4 times multiplier and makes 4fsc as system clock.
This block supplies system clock (4fsc) to each block via buffer and generates timing signal for memories.
(8) D / A converter (DAC)
This is high speed 8 bit D / A converter. Y output level is 1.73 Vp-p (Typ.).
C output level is 437 mVp-p (Typ.). (Input condition is 0.75Vp-p)
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相关代理商/技术参数 |
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|---|---|
| TC90A45F | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:NTSC 2-LINE DIGITAL Y/C SEPARATION IC |
| TC90A45FG(ELP,D) | 功能描述:视频 IC NTSC 2Line Comb RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| TC90A45P | 制造商:Panasonic Industrial Company 功能描述:IC SUB: C1AA00000370 |
| TC90A45PG | 功能描述:多媒体杂项 NTSC 2Line Comb RoHS:否 制造商:Texas Instruments 类型: 通道数量: 转换速率:540 Mbps 分辨率: 封装 / 箱体:SOIC-16 封装:Tube |
| TC90A49 | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:3LINE DIGITAL Y / C SEPARATOR IC (MULTICOLOR TYPE) |
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