AD9281

更新时间： 2024-10-27 22:25:23

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
19页	410K
描述
Dual Channel 8-Bit Resolution CMOS ADC

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AD9281 数据手册

Dual Channel 8-Bit

Resolution CMOS ADC

AD9281

FUNCTIONAL BLOCK DIAGRAM

FEATURES

Complete Dual Matching ADC

Low Power Dissipation: 225 mW (+3 V Supply)

Single Supply: 2.7 V to 5.5 V

Differential Nonlinearity Error: 0.1 LSB

On-Chip Analog Input Buffers

On-Chip Reference

Signal-to-Noise Ratio: 49.2 dB

Over Seven Effective Bits

Spurious-Free Dynamic Range: –65 dB

No Missing Codes Guaranteed

28-Lead SSOP

AVDD AVSS

DVDD DVSS

CLOCK

IINA

IINB

SLEEP

AD9281

"I" ADC

SELECT

REFERENCE

BUFFER

IREFB

IREFT

THREE-

QREFB

QREFT

ASYNCHRONOUS

MULTIPLEXER

STATE

OUTPUT

BUFFER

DATA

8 BITS

VREF

REFSENSE

CHIP

SELECT

QINB

QINA

"Q" ADC

PRODUCT DESCRIPTION

PRODUCT HIGHLIGHTS

The AD9281 is a complete dual channel, 28 MSPS, 8-bit

CMOS ADC. The AD9281 is optimized specifically for applica-

tions where close matching between two ADCs is required (e.g.,

I/Q channels in communications applications). The 28 MHz

sampling rate and wide input bandwidth will cover both narrow-

band and spread-spectrum channels. The AD9281 integrates

two 8-bit, 28 MSPS ADCs, two input buffer amplifiers, an internal

voltage reference and multiplexed digital output buffers.

1. Dual 8-Bit, 28 MSPS ADC

A pair of high performance 28 MSPS ADCs that are opti-

mized for spurious free dynamic performance are provided for

encoding of I and Q or diversity channel information.

2. Low Power

Complete CMOS Dual ADC function consumes a low

225 mW on a single supply (on 3 V supply). The AD9281

operates on supply voltages from 2.7 V to 5.5 V.

Each ADC incorporates a simultaneous sampling sample-and-

hold amplifier at its input. The analog inputs are buffered; no

external input buffer op amp will be required in most applica-

tions. The ADCs are implemented using a multistage pipeline

architecture that offers accurate performance and guarantees no

missing codes. The outputs of the ADCs are ported to a multi-

plexed digital output buffer.

3. On-Chip Voltage Reference

The AD9281 includes an on-chip compensated bandgap

voltage reference pin programmable for 1 V or 2 V.

4. On-chip analog input buffers eliminate the need for external

op amps in most applications.

5. Single 8-Bit Digital Output Bus

The AD9281 ADC outputs are interleaved onto a single

output bus saving board space and digital pin count.

The AD9281 is manufactured on an advanced low cost CMOS

process, operates from a single supply from 2.7 V to 5.5 V, and

consumes 225 mW of power (on 3 V supply). The AD9281

input structure accepts either single-ended or differential signals,

providing excellent dynamic performance up to and beyond

14 MHz Nyquist input frequencies.

6. Small Package

The AD9281 offers the complete integrated function in a

compact 28-lead SSOP package.

7. Product Family

The AD9281 dual ADC is pin compatible with a dual 10-bit

ADC (AD9201).

REV. E

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

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

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

Tel: 781/329-4700

Fax: 781/326-8703

World Wide Web Site: http://www.analog.com

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中文翻译

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与AD9281相关器件

型号	品牌	获取价格	描述	数据表
AD9281ARS	ADI	获取价格	Dual Channel 8-Bit Resolution CMOS ADC
AD9281ARS	ROCHESTER	获取价格	2-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28, SSOP-28
AD9281ARSRL	ADI	获取价格	Dual Channel 8-Bit Resolution CMOS ADC
AD9281ARSZ	ADI	获取价格	Dual Channel 8-Bit Resolution CMOS ADC
AD9281ARSZ	ROCHESTER	获取价格	2-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28, SSOP-28
AD9281ARSZRL	ROCHESTER	获取价格	2-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28, SSOP-28
AD9281-EB	ADI	获取价格	Dual Channel 8-Bit Resolution CMOS ADC
AD9283	ADI	获取价格	8-Bit, 50 MSPS/80 MSPS/100 MSPS 3 V A/D Converter
AD9283/PCB	ADI	获取价格	8-Bit, 50 MSPS/80 MSPS/100 MSPS 3 V A/D Converter
AD9283-703RC	ADI	获取价格	Aerospace 8-Bit, 100 MSPS Analog to Digital Converter

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