LM98501CCVBH

更新时间： 2024-11-12 22:28:23

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
24页	493K
描述
10-Bit, 27 MSPS Camera Signal Processor

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LM98501CCVBH 数据手册

February 2000

LM98501

10-Bit, 27 MSPS Camera Signal Processor

General Description

The LM98501 is a CCD signal processor for electronic cam-

eras. The processor provides a common interface to a num-

Features

n +3V single power supply

n Low power CMOS design

n 4-wire serial interface

ber of different image sensors including CCD, CMOS, and

CIS. Correlated double sampling reduces kTC noise from

the image signal. A fast, temperature stable, 8-bit digitally

programmable

gain

amplifier

enables

pixel-rate

n 2.5V data output voltage swing

n No missing codes

n AUX input with input clamp and programmable gain

n Four color gain and offset registers

n Digital black level clamp

white-balancing. An auxiliary input is provided, allowing for

the selection of an external signal, useful for electronic titling

and video overlay. The 10-bit A/D converter preserves the

image quality with excellent noise performance. The

LM98501 also includes the supporting functions of digital

black level clamp and power down, ideally suited for portable

video applications. This low-power processor is a natural

choice for the most demanding imaging systems.

n Small 48-lead LQFP package

Key Specifications

Maximum Input Level

CDS Sampling Rate

PGA Gain Steps

1.0V peak-peak

27 MSPS

Applications

n Digital still camera

256 Steps

n Digital video camcorder

n Video conferencing

n Security camera

PGA Gain Range

ADC Resolution

0.0 dB-32.0 dB

10-Bit

n Plain paper copier

ADC Sampling Rate

*Signal-to-Noise Ratio

Power Dissipation

27 MSPS

n Flatbed or handheld color scanner

n Video processing for x-ray or infrared

n Barcode scanner

60 dB 0 dB Gain, 1.0V Input

AV+ = DV+ = DV+ I/O = 3.0V

195 mW (typical)

0˚C to 70˚C

Operating Temperature

20 log₁₀(V_IN/RMS Output Noise)

Typical Digital Camera Block Diagram

DS101292-1

DS101292

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