AD9822JRRL

更新时间： 2024-11-06 12:33:15

品牌	Logo	应用领域
亚德诺 - ADI		商用集成电路光电二极管
页数	文件大小	规格书
20页	474K
描述
Complete 14-Bit CCD/CIS Signal Processor

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AD9822JRRL 数据手册

Complete 14-Bit

CCD/CIS Signal Processor

AD9822

GENERAL DESCRIPTION

FEATURES

14-bit 15 MSPS ADC

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.

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

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.

APPLICATIONS

Flatbed document scanners

Film scanners

Digital color copiers

Multifunction peripherals

FUNCTIONAL BLOCK DIAGRAM

AVDD

AVSS

CDS

CML

CAPT

CAPB

AVDD

AVSS

DRVDD

DRVSS

AD9822

VINR

VING

PGA

OEB

BAND GAP

REFERENCE

9-BIT

DAC

14:8

MUX

14-BIT

ADC

3:1

MUX

DOUT

CDS

PGA

9-BIT

DAC

CONFIGURATION

MUX

SCLK

VINB

DIGITAL

RED

GREEN

BLUE

CONTROL

INTERFACE

SLOAD

SDATA

9-BIT

DAC

GAIN

REGISTERS

INPUT

CLAMP

BIAS

RED

GREEN

BLUE

OFFSET

REGISTERS

CDSCLK1 CDSCLK2

ADCCLK

Figure 1.

Rev. B

Information furnished by Analog Devices is believed to be accurate and reliable.

However, no responsibility is assumed by Analog Devices for its use, nor for any

infringements of patents or other rights of third parties that may result from its use.

Specifications subject to change without notice. No license is granted by implication

or otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.326.8703

www.analog.com

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与AD9822JRRL相关器件

型号	品牌	获取价格	描述	数据表
AD9822JRS	ADI	获取价格	Complete 14-Bit CCD/CIS Signal Processor
AD9822JRSRL	ADI	获取价格	Complete 14-Bit CCD/CIS Signal Processor
AD9822JRSZ	ADI	获取价格	Complete 14-Bit CCD/CIS Signal Processor
AD9822JRSZRL	ADI	获取价格	Complete 14-Bit CCD/CIS Signal Processor
AD9822JRZ	ADI	获取价格	Complete 14-Bit CCD/CIS Signal Processor
AD9823	ADI	获取价格	Correlated Double Sampler (CDS)
AD9823BRUZ	ADI	获取价格	Correlated Double Sampler (CDS)
AD9823KRUZ	ADI	获取价格	Correlated Double Sampler (CDS)
AD9824	ADI	获取价格	Complete 14-Bit 30 MSPS CCD Signal Processor
AD9824KCP	ADI	获取价格	Complete 14-Bit 30 MSPS CCD Signal Processor

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