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參數資料
| 型號： | LC74950BG |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PBGA96 |
| 封裝： | 6 X 6 MM, FBGA-96 |
| 文件頁數： | 17/37頁 |
| 文件大小： | 350K |
| 代理商： | LC74950BG |
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LC74950BG
No.A1647-24/37
Pedestal clamp specifications
Clamp LPF function
A primary LPF with a 1MHz cutoff frequency has been inserted in the stage before the self-clamp circuit as a measure
to deal with the high-frequency noise that is present in weak electrical fields. The clamp LPF function is for
minimizing shifts in the clamp levels of the self-clamp and sub-clamp when high-frequency noise components are
present in the video signals. The LPF can be set to ON or OFF using the CLPLPFON setting. It must be set to ON
when SD standard signals are input, and set to OFF when HD standard signals are input. The cutoff frequency of the
LPF is 1MHz. Care must therefore be taken when the LPF is set to ON since the clamp level will drop when HD
standard signals are input because it is not possible to track frequencies corresponding to the sync width.
Input video signal (SD)
High-frequency noise with
frequencies of 1MHz and above
0V
0.35V
Sink tip clamp
when LPF is off.
Clamping is performed at the lower limit
level of the noise components. Due to
the effect of the noise, the clamp level
shifts.
Clamping is performed at the level at which
the noise components are removed. It is
clamped at its original position.
Sink tip clamp
when LPF is on.
* The figures represent the set values set under ideal conditions.
511
1
256
0.7Vp-p
0.325V
Analog input
Digital output
1.20V
0.85V
(ADC-input reference)
0.50V
1.55V
0.15V
Digital output
64
448
1.4Vp-p range
1.375V
S/H gain setting
GAIN=H
1.5
× gain
Clamp settings
Self-clamp setting
SELFCLPSTBB
H: Self-clamp ON
Main clamp level setting
MAINCLPLVCNT [1:0]
01: Main clamp level set to 0.50V
HPF center clamp setting
HPFCLPON
L: HPF clamp OFF
S/H gain setting
GAIN
H: 1.5
× gain
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相關代理商/技術參數 |
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| LC74950BG-TLM-H | 功能描述:視頻模擬/數字化轉換器集成電路 RoHS:否 制造商:Texas Instruments 輸入信號類型:Differential 轉換器數量:1 ADC 輸入端數量:4 轉換速率:3 Gbps 分辨率:8 bit 結構: 輸入電壓:3.3 V 接口類型:SPI 信噪比: 電壓參考: 電源電壓-最大:3.45 V 電源電壓-最小:3.15 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TCSP-48 封裝:Reel |
| LC74980W | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LC74981W | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LC74982W | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:LCD TV Scan Converter IC |
| LC749870W | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Silicon gate NTSC/PAL/SECAM Digital Video Decoder |
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