AD9845B:  Complete 12-Bit 30 MSPS CCD Signal Processor

The AD9845B is a complete analog signal processor for CCD applications. It features a 30 MHz single-channel architecture designed to sample and condition the outputs of interlaced and progressive scan ...More

AD9845B:  Complete 12-Bit 30 MSPS CCD Signal Processor

Product Description

The AD9845B is a complete analog signal processor for CCD applications. It features a 30 MHz single-channel architecture designed to sample and condition the outputs of interlaced and progressive scan area CCD arrays. The AD9845B's signal chain consists of an input clamp, correlated double sampler (CDS), Pixel Gain Amplifier (PxGA®), digitally controlled variable gain amplifier (VGA), black level clamp, and a 12-bit A/D converter. Additional input modes are provided for processing analog video signals.

The internal registers are programmed through a 3-wire serial digital interface. Programmable features include gain adjustment, black level adjustment, input configuration, and power-down modes.

The AD9845B operates from a single 3 V power supply, typically dissipates 140 mW, and is packaged in a 48-lead LQFP.

Features

  • Pin Compatible with AD9845A Designs
  • 12-Bit 30 MSPS A/D Converter
  • 30 MSPS Correlated Double Sampler (CDS)
  • 4 dB ± 6 dB 6-Bit Pixel Gain Amplifier (PxGA®)
  • 2 dB to 36 dB 10-Bit Variable Gain Amplifier (VGA)
  • Low Noise Clamp Circuits
  • Preblanking Function
  • Auxiliary Inputs with VGA and Input Clamp
  • 3-Wire Serial Digital Interface
  • 3 V Single-Supply Operation
  • Low Power: 153 mW @ 3 V Supply
  • Space-Saving 48-Lead LQFP Package

Diagrams

AD9845B Diagram
Functional Block Diagram for AD9845B

Specifications

Resolution (Bits) 12bit

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*The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

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