Datasheet > AD7898ARZ-10REEL73

AD7898ARZ-10REEL73

更新时间： 2024-09-30 12:36:43

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
16页	182K
描述
5 V, 12-Bit, Serial 220 kSPS ADC in an 8-Lead Package

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5 V, 12-Bit, Serial 220 kSPS

ADC in an 8-Lead Package

AD7898^*

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Fast 12-Bit ADC with 220 kSPS Throughput Rate

8-Lead SOIC

REF IN

Single 5 V Supply Operation

High Speed, Flexible, Serial Interface that

Allows Interfacing to 3 V Processors

On-Chip Track/Hold Amplifier

Selection of Input Ranges

؎10 V for AD7898-10

AD7898

TRACK/HOLD

SIGNAL

SCALING*

12-BIT

ADC

؎2.5 V for AD7898-3

High Input Impedance

Low Power: 22.5 mW Max

OUTPUT

CONVST

GND

SDATA

VDRIVE

SCLK

*AD7898-10, AD7898-3

GENERAL DESCRIPTION

PRODUCT HIGHLIGHTS

The AD7898 is a fast 12-bit ADC that operates from a single

5 V supply and is housed in a small 8-lead SOIC package. The

part contains a successive approximation A/D converter, an on-

chip track/hold amplifier, an on-chip clock, and a high speed

serial interface.

1. Fast, 12-Bit ADC in 8-Lead Package

The AD7898 contains a 220 kSPS ADC, a track/hold ampli-

fier, control logic, and a high speed serial interface, all in an

8-lead package. This offers considerable space saving over

alternative solutions.

The AD7898 offers two modes of operation. In Mode 0, con-

version is initiated by the CONVST input and the conversion

process is controlled by an internal clock oscillator. In this mode,

the serial interface consists of three wires and the AD7898 is

capable of throughput rates up to 220 kSPS. In Mode 1, the

conversion process is controlled by an externally applied SCLK

with data being accessed from the part during conversion. In

this mode, the serial interface consists of three wires and the

AD7898 is capable of throughput rates up to 220 kSPS.

2. Low Power, Single-Supply Operation

The AD7898 operates from a single 5 V supply and con-

sumes only 22.5 mW. The V_DRIVEfunction allows the serial

interface to connect directly to either 3 V or 5 V processor

systems independent of V_DD

3. Flexible, High Speed Serial Interface

The part provides a flexible, high speed serial interface that

has two distinct modes of operation. Mode 0 provides a three-

wire interface with data being accessed from the AD7898

when conversion is complete. Mode 1 offers a three-wire

interface with data being accessed during conversion.

In addition to the traditional dc accuracy specifications, such as

linearity and full-scale and offset errors, the AD7898 is specified

for dynamic performance parameters, including harmonic dis-

tortion and signal-to-noise ratio.

4. Power-Down Mode

The AD7898 offers a proprietary power-down capability

when operated in Mode 1, making the part ideal for portable

or hand-held applications.

The part accepts an analog input range of 10 V (AD7898-10)

and 2.5 V (AD7898-3), and operates from a single 5 V supply,

consuming only 22.5 mW max.

The part is available in an 8-lead Standard Small Outline

Package (SOIC).

*Protected by U.S. Patent No. 6,681,332

REV. A

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat

may result from its use. 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AD7898ARZ-10REEL73相关器件

型号	品牌	获取价格	描述	数据表
AD7898ARZ-3	ROCHESTER	获取价格	1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, SOIC-8
AD7899	ADI	获取价格	Evaluation Board for 5V, 12-Bit, Serial 220kSPS ADC in 8-Pin Package
AD7899AR-1	ADI	获取价格	5 V Single Supply 14-Bit 400 kSPS ADC
AD7899AR-1	ROCHESTER	获取价格	2-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, SOIC-28
AD7899AR-2	ADI	获取价格	5 V Single Supply 14-Bit 400 kSPS ADC
AD7899AR-2	ROCHESTER	获取价格	暂无描述
AD7899AR-2REEL	ROCHESTER	获取价格	2-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, SOIC-28
AD7899AR-3	ADI	获取价格	5 V Single Supply 14-Bit 400 kSPS ADC
AD7899AR-3	ROCHESTER	获取价格	2-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, SOIC-28
AD7899AR-3REEL	ADI	获取价格	2-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, SOIC-28

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