LM9810/20 10/12-Bit Image Sensor Processor Analog Front End
October 2000
LM9810/LM9820
10/12-Bit Image Sensor Processor Analog Front End
General Description
The LM9810 and LM9820 are high performance Analog
Front Ends (AFEs) for image sensor processing systems.
The LM9810/20 performs all the analog and mixed signal
functions (correlated double sampling, color specific gain
and offset correction, and analog to digital conversion) nec-
essary to digitize the output of a wide variety of CIS and CCD
sensors. The LM9810 has a 10-bit 6 MHz ADC, and the
LM9820 has a 12-bit 6 MHz ADC. The LM9810 and LM9820
are pin-for-pin and functionally compatible.
Features
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6 million pixels/s conversion rate
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Digitally programmed gain and offset for red, green and
blue pixels
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Correlated Double Sampling for lowest noise
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TTL/CMOS input/output compatible
Applications
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Color Flatbed Document Scanners
Color Sheetfed Scanners
Multifunction Imaging Products
Digital Copiers
General Purpose Linear CCD Imaging
Key Specifications
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Output Data Resolution
Pixel Conversion Rate
Supply Voltage
Power Dissipation
10/12 Bits
6 MHz
5V
鹵
5%
300 mW
Connection Diagram
DS100943-69
Ordering Information
Commercial (0藲C
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LM9810CCWM
LM9810CCWMX
LM9820CCWM
LM9820CCWMX
20-Pin Wide SOIC
20-Pin Wide SOIC, Tape and Reel
20-Pin Wide SOIC
20-Pin Wide SOIC, Tape and Reel
Package
漏 2000 National Semiconductor Corporation
DS100943
www.national.com
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