AD9948

Obsolete

10-Bit CCD Signal Processor with Precision Timing™ Core

Data Sheet (Rev. 0) Product Selection Table

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Overview

Correlated Double Sampler (CDS)
0 dB to 18 dB Pixel Gain Amplifier (PxGA^®)
6 dB to 42 dB 10-Bit Variable Gain Amplifier (VGA)
10-Bit 25 MSPS A/D Converter
Black Level Clamp with Variable Level Control

Complete On-Chip Timing Driver
Precision Timing Core with 800 ps Resolution
On-Chip 3 V Horizontal and RG Drivers
40-Lead LFCSP Package

The AD9948 is a highly integrated CCD signal processor for digital still camera applications. Specified at pixel rates of up to 25 MHz, the AD9948 consists of a complete analog front end with A/D conversion, combined with a programmable timing driver. The Precision Timing core allows adjustment of high speed clocks with 800 ps resolution.

The analog front end includes black level clamping, CDS, PxGA, VGA, and a 25 MHz 10-bit A/D converter. The timing driver provides the high speed CCD clock drivers for RG and H1–H4. Operation is programmed using a 3-wire serial interface.

Packaged in a space-saving 40-lead LFCSP package, the AD9948 is specified over an operating temperature range of –20ºC to +85ºC.