LM98501CCVBH datasheet(1/24 Pages) NSC

Part #	LM98501CCVBH

Description	10-Bit, 27 MSPS Camera Signal Processor

PDF	24 Pages

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Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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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-

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

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.

Applications

n

Digital still camera

n

Digital video camcorder

n

Video conferencing

n

Security camera

n

Plain paper copier

n

Flatbed or handheld color scanner

n

Video processing for x-ray or infrared

n

Barcode scanner

Features

n

+3V single power supply

n

Low power CMOS design

n

4-wire serial interface

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

n

Small 48-lead LQFP package

Key Specifications

jMaximum Input Level

1.0V peak-peak

jCDS Sampling Rate

27 MSPS

jPGA Gain Steps

256 Steps

jPGA Gain Range

0.0 dB-32.0 dB

jADC Resolution

10-Bit

jADC Sampling Rate

27 MSPS

j*Signal-to-Noise Ratio

60 dB 0 dB Gain, 1.0V Input

jPower Dissipation

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

195 mW (typical)

jOperating Temperature

0˚C to 70˚C

*20 log

10 (VIN/RMS Output Noise)

Typical Digital Camera Block Diagram

DS101292-1

February 2000

DS101292

www.national.com

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LM98501CCVBH Datasheet(PDF) 1 Page - National Semiconductor (TI)

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