AD9822集成電路（IC）的傳感器檢測器接口規(guī)格書PDF中文資料

AD9822屬于集成電路（IC）的傳感器檢測器接口。由亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD9822傳感器和檢測器接口該系列產(chǎn)品可執(zhí)行信號(hào)調(diào)節(jié)、數(shù)據(jù)轉(zhuǎn)換、激勵(lì)生成和/或各種將傳感器或變送器機(jī)構(gòu)連接到主機(jī)設(shè)備所需的其他功能。示例包括用于 CCD 圖像傳感器的控制器、用于 4-20 mA 接口和類似應(yīng)用的電流變送器、超聲變送器前端、惠斯通電橋接口等。

GENERAL DESCRIPTION

The AD9822 is a complete analog signal processor for CCD imaging applications. It features a 3-channel architecture designed to sample and condition the outputs of trilinear color CCD arrays. Each channel consists of an input clamp, correlated double sampler (CDS), offset DAC, and programmable gain amplifier (PGA) multiplexed to a high performance 14-bit ADC.

The CDS amplifiers may be disabled for use with sensors such as contact image sensors (CIS) and CMOS active pixel sensors, which do not require CDS.

The 14-bit digital output is multiplexed into an 8-bit output word that is accessed using two read cycles. The internal registers are programmed through a 3-wire serial interface and provide adjustment of the gain, offset, and operating mode.

The AD9822 operates from a single 5 V power supply, consumes 385 mW of power typically, and is packaged in a 28-lead SOIC or SSOP.

FEATURES

14-bit 15 MSPS ADC

No missing codes guaranteed

3-channel operation up to 15 MSPS

1-channel operation up to 12.5 MSPS

Correlated double sampling

1–6× programmable gain

±350 mV programmable offset

Input clamp circuitry

Internal voltage reference

Multiplexed byte-wide output (8 + 6 format)

3-wire serial digital interface

3 V/5 V digital I/O compatibility

28-Lead SOIC or SSOP

Low power CMOS: 385 mW (typ)

Power-down mode: <1 mW

APPLICATIONS

Flatbed document scanners

Film scanners

Digital color copiers

Multifunction peripherals