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參數資料
| 型號： | LM98501CCVBH |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 消費家電 |
| 英文描述： | 10-Bit, 27 MSPS Camera Signal Processor |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| 封裝： | LQFP-48 |
| 文件頁數： | 13/24頁 |
| 文件大小： | 490K |
| 代理商： | LM98501CCVBH |
Digital Output Timing
System Timing
System Overview
INTRODUCTION
The LM98501 is a 10-bit, complete analog-to-digital camera
signal processor for use with CCD imager systems operating
from a single +3V supply. The internal processing is carefully
optimized to maintain the signal-to-noise ratio and excellent
dynamic performance of most popular CCD imagers. The
system block diagram of the LM98501, shown on the cover
page of the datasheet, highlights the main features of the de-
vice: correlated double sampling (CDS), 0 dB–32 dB digitally
programmable gain amplifier (PGA), digital black level cor-
rection feedback loop, 8-bit DAC, analog clamp, bandgap
voltage reference, and a 10-bit, 27 MHz analog-to-digital
converter.
CORRELATED DOUBLE SAMPLING
Correlated double sampling (CDS) is a key feature in CCD
image processors. The sampling process consists of two
samples being taken for each pixel. The first stores the reset
voltage of the input pixel, and the second stores the video
signal amplitude. The two samples are subtracted from one
another, effectively removing the reset error offset of each
pixel. This sampling system operates at 27 MHz, allowing
the use of imagers that have resolution at high speeds. Op-
eration at these higher clock rates generates electronic im-
ages similar to a high-speed camera, preventing blearing of
the image caused by motion during the exposure.
DS101292-8
FIGURE 7. Digital Output Data Timing
DS101292-9
FIGURE 8. System Timing
L
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相關PDF資料 |
PDF描述 |
|---|---|
| LM98501 | 10-Bit, 27 MSPS Camera Signal Processor |
| LMC555CBPEVAL | CMOS Timer |
| LMC555CN | CMOS Timer |
| LMC555 | CMOS Timer |
| LMC555CM | CMOS Timer |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM98501VBH WAF | 制造商:Texas Instruments 功能描述: |
| LM98502A WAF | 制造商:Texas Instruments 功能描述: |
| LM98503 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:10-Bit, 18 MSPS Camera Signal Processor |
| LM98503CCVV | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:10-Bit, 18 MSPS Camera Signal Processor |
| LM98510CCMT | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
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