VSP2267 datasheet(6/88 Pages) TI

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Introduction

SBES001—December 2002

VSP2267

Introduction

1.1

Description

The VSP2267 is a complete mixed-signal IC for CCD signal processing with a CCD timing generator and A/D

converter. The system synchronizes the master clock, HD, and VD. The VSP2267 supports all signal terminals

that the CCD and the vertical driver require, plus externally triggered mechanical shutter and strobe functions.

The R driver and H driver synchronize the A/D converter clock phase to realize ideal performance. The CCD

channel has correlated double sampling (CDS) to extract image information from the CCD output signal. The

digital control gain curve is linear in dB, ranging from –6 dB to 42 dB. A black-level clamping circuit ensures

an accurate black reference level and quick black-level recovery after a gain change. Input signal clamping

with a CDS offset adjustment function is available.

1.2

Features

The VSP2267 supports the following features:

•

CCD Signal Processing:

–

Correlated Double Sampling (CDS)

–

Programmable Black-Level Clamping

•

Timing Generator With R and H Drivers

•

Programmable Phase Control:

–

Fine Step: 0.6 ns

–

Wide Step: 8 ns

•

Programmable-Gain Amplifier (PGA): –6 dB to 42 dB Gain Range

•

12-Bit Digital Data Output:

–

Up to 25-MHz Conversion Rate

–

No Missing Codes

•

Signal-to-Noise Ratio: 79 dB

•

Portable Operation:

–

Low Voltage: 3.0 V to 3.6 V

–

Low Power: 138 mW at 3.0 V and 20 MHz

151 mW at 3.0 V and 25 MHz

–

Standby Plus Power-Save Mode: 34 mW

–

MCLK-Off Mode: 6 mW

•

Recommended CCD: MN39470, MN39471, MN39472, MN39473, MN39474 (Panasonic)

VSP2267 Datasheet(PDF) 6 Page - Texas Instruments

VSP2267 Datasheet(HTML) 6 Page - Texas Instruments

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