AD7899ARS-2

更新时间： 2024-11-24 12:29:31

品牌	Logo	应用领域
亚德诺 - ADI		转换器光电二极管
页数	文件大小	规格书
16页	242K
描述
5 V Single Supply 14-Bit 400 kSPS ADC

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中文翻译

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数据手册
替代型号

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AD7899ARS-2 数据手册

5 V Single Supply

14-Bit 400 kSPS ADC

AD7899

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Fast (2.2 ␮s) 14-Bit ADC

AVDD

REF

DRIVE

400 kSPS Throughput Rate

0.3 ␮s Track/Hold Acquisition Time

Single Supply Operation

Selection of Input Ranges: ؎10 V, ؎5 V and ؎2.5 V

0 V to 2.5 V and 0 V to 5 V

6k⍀

2.5V

REFERENCE

STBY

AD7899

–

High-Speed Parallel Interface which Also Allows

Interfacing to 3 V Processors

Low Power, 80 mW Typ

Power-Saving Mode, 20 ␮W Typ

Overvoltage Protection on Analog Inputs

Power-Down Mode via STBY Pin

TRACK/HOLD

DB13

DB0

INA

OUTPUT

LATCH

SIGNAL

SCALING

14-BIT

ADC

INB

INT/EXT

CLOCK

SELECT

CONVERSION

CONTROL

LOGIC

INT

CLOCK

BUSY/EOC

CONVST

CLKIN

GND OPGND

GENERAL DESCRIPTION

PRODUCT HIGHLIGHTS

The AD7899 is a fast, low-power, 14-bit A/D converter that

operates from a single 5 V supply. The part contains a 2.2 µs

successive-approximation ADC, a track/hold amplifier, 2.5 V

reference, on-chip clock oscillator, signal conditioning circuitry,

and a high-speed parallel interface. The part accepts analog input

ranges of 10 V, 5 V, 2.5 V, 0 V to 2.5 V, and 0 V to 5 V.

Overvoltage protection on the analog input for the part allows

the input voltage to be exceeded without damaging the parts.

1. The AD7899 features a fast (2.2 µs) ADC allowing through-

put rates of up to 400 kSPS.

2. The AD7899 operates from a single 5 V supply and con-

sumes only 80 mW typ making it ideal for low power and

portable applications.

3. The part offers a high-speed parallel interface. The interface

can operate in 3 V and 5 V mode allowing for easy connec-

tion to 3 V or 5 V microprocessors, microcontrollers, and

digital signal processors.

Speed of conversion can be controlled either by an internally

trimmed clock oscillator or by an external clock.

4. The part is offered in three versions with different analog

input ranges. The AD7899-1 offers the standard industrial

ranges of 10 V and 5 V; the AD7899-2 offers a unipolar

range of 0 V to 2.5 or 0 V to 5 V, and the AD7899-3 has an

input range of 2.5 V.

A conversion start signal (CONVST) places the track/hold into

hold mode and initiates conversion. The BUSY/EOC signal

indicates the end of the conversion.

Data is read from the part via a 14-bit parallel data bus using the

standard CS and RD signals. Maximum throughput for the

AD7899 is 400 kSPS.

The AD7899 is available in a 28-lead SOIC and SSOP packages.

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.

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

12 3 4 5 6 7...16

中文翻译

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AD7899ARS-2 替代型号

型号	品牌	替代类型	描述	数据表
AD7899ARS-1	ADI	完全替代	5 V Single Supply 14-Bit 400 kSPS ADC
AD7899ARSZ-2	ADI	类似代替	5 V Single Supply 14-Bit 400 kSPS ADC

与AD7899ARS-2相关器件

型号	品牌	获取价格	描述	数据表
AD7899ARS-2REEL	ADI	获取价格	IC 2-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, SSOP-28, Analog to D
AD7899ARS-2REEL	ROCHESTER	获取价格	2-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, SSOP-28
AD7899ARS-2REEL7	ADI	获取价格	2-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, SSOP-28
AD7899ARS-3	ADI	获取价格	5 V Single Supply 14-Bit 400 kSPS ADC
AD7899ARS-3	ROCHESTER	获取价格	2-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, SSOP-28
AD7899ARS-3REEL	ADI	获取价格	暂无描述
AD7899ARSZ-1	ROCHESTER	获取价格	2-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, SSOP-28
AD7899ARSZ-1REEL7	ROCHESTER	获取价格	2-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, SSOP-28
AD7899ARSZ-2	ADI	获取价格	5 V Single Supply 14-Bit 400 kSPS ADC
AD7899ARSZ-2REEL	ROCHESTER	获取价格	2-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, SSOP-28

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