Part # AD9845B datasheet

Part Manufacturer: Analog Devices

Analog Devices

Part Description: AD9845B Complete 12-Bit 30 MSPS CCD Signal Processor Data Sheet (Rev. B)

Part Details:

Complete 12-Bit 30 MSPS CCD Signal Processor AD9845B FEATURES GENERAL DESCRIPTION Pin Compatible with AD9845A Designs The AD9845B is an improved version of the AD9845A CCD 12-Bit 30 MSPS A/D Converter signal processor. It features a 30 MHz single-channel architec- 30 MSPS Correlated Double Sampler (CDS) ture designed to sample and condition the outputs of interlaced 4 dB 6 dB 6-Bit Pixel Gain Amplifier (PxGA®) and progressive scan area CCD arrays. The AD9845B s signal 2 dB to 36 dB 10-Bit Variable Gain Amplifier (VGA) chain consists of an input clamp, a correlated double sampler Low Noise Clamp Circuits (CDS), PxGA, a digitally controlled VGA, a black level clamp, Preblanking Function and a 12-bit A/D converter. Additional input modes are also Auxiliary Inputs with VGA and Input Clamp provided for processing analog video signals. 3-Wire Serial Digital Interface The internal registers are programmed through a 3-wire 3 V Single-Supply Operation serial digital interface. Programmable features include gain Low Power: 153 mW @ 3 V Supply adjustment, black level adjustment, input configuration, and Space-Saving 48-Lead LQFP Package power-down modes. APPLICATIONS The AD9845B operates from a single 3 V power supply, typi- High Performance Digital Still Cameras cally dissipates 153 mW, and is packaged in a 48-lead LQFP. Industrial/Scientific Imaging FUNCTIONAL BLOCK DIAGRAM AVDD AVSS HD VD VRT VRB PBLK COLOR BAND GAP DRVDD STEERING REFERENCE 4dB 6dB DRVSS 2dB~36dB CCDIN CDS PxGA 12 2:1

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AD9845B.pdf Datasheet