AD7895AR-3

更新时间： 2024-11-25 22:17:47

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
12页	316K
描述
5 V, 12-Bit, Serial 3.8 ms ADC in 8-Pin Package

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AD7895AR-3 数据手册

5 V, 12-Bit, Serial 3.8 ␮s

ADC in 8-Pin Package

AD7895

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Fast 12-Bit ADC with 3.8 ␮s Conversion Time

8-Pin Mini-DlP and SOIC

REF IN

Single 5 V Supply Operation

High Speed, Easy-to-Use, Serial Interface

On-Chip Track/Hold Amplifier

Selection of Input Ranges

؎10 V for AD7895-10

AD7895

TRACK/HOLD

؎2.5 V for AD7895-3

0 V to +2.5 V for AD7895-2

High Input Impedance

SIGNAL

SCALING*

12-BIT

ADC

Low Power: 20 mW max

14-Bit Pin Compatible Upgrade (AD7894)

OUTPUT

CONVST

GND

BUSY

SCLK

SDATA

*AD7895-10, AD7895-3

GENERAL DESCRIPTION

The AD7895 is a fast 12-bit ADC that operates from a single

+5 V supply and is housed in a small 8-pin mini-DIP and 8-pin

SOIC. The part contains a 3.8 µs successive approximation A/D

converter, an on-chip track/hold amplifier, an on-chip clock and

a high speed serial interface.

PRODUCT HIGHLIGHTS

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

The AD7895 contains a 3.8 µs ADC, a track/hold amplifier,

control logic and a high speed serial interface, all in an 8-pin

package. This offers considerable space saving over alterna-

tive solutions.

Output data from the AD7895 is provided via a high speed,

serial interface port. This two-wire serial interface has a serial

clock input and a serial data output with the external serial clock

accessing the serial data from the part.

2. Low Power, Single Supply Operation

The AD7895 operates from a single +5 V supply and

consumes only 20 mW. The automatic power-down mode,

where the part goes into power-down once conversion is

complete and “wakes up” before the next conversion cycle,

makes the AD7895 ideal for battery-powered or portable

applications.

In addition to the traditional dc accuracy specifications such as

linearity and full-scale and offset errors, the AD7895 is specified

for dynamic performance parameters, including harmonic

distortion and signal-to-noise ratio.

The part accepts an analog input range of ±10 V (AD7895-10),

±2.5 V (AD7895-3), 0 V to 2.5 V (AD7895-2) and operates

from a single +5 V supply, consuming only 20 mW max.

3. High Speed Serial Interface

The part provides high speed serial data and serial clock lines

allowing for an easy, two-wire serial interface arrangement.

The AD7895 features a high sampling rate mode and, for low

power applications, a proprietary automatic power-down mode

where the part automatically goes into power down once

conversion is complete and “wakes up” before the next conver-

sion cycle.

The part is available in a small, 8-pin, 0.3" wide, plastic dual-in-

line package (mini-DIP) and in an 8-pin, small outline IC (SOIC).

REV. 0

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: 617/329-4700

Fax: 617/326-8703

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

12 3 4 5 6 7...12

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AD7895AR-3 替代型号

型号	品牌	替代类型	描述	数据表
AD7895ARZ-3	ADI	完全替代	True Bipolar Input, 5 V Single Supply, 12-Bit, Serial 3.8 µs ADC in 8-Pin Package

与AD7895AR-3相关器件

型号	品牌	获取价格	描述	数据表
AD7895AR-3REEL	ADI	获取价格	IC 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, SOIC-8, Analog to Digit
AD7895ARZ-10	ROCHESTER	获取价格	1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, SOIC-8
AD7895ARZ-10REEL	ADI	获取价格	5 V, 12-Bit, Serial 3.8 ms ADC in 8-Pin Package
AD7895ARZ-2	ADI	获取价格	5 V, 12-Bit, Serial 3.8 ms ADC in 8-Pin Package
AD7895ARZ-2REEL	ADI	获取价格	True Bipolar Input, 5 V Single Supply, 12-Bit, Serial 3.8 µs ADC in 8-Pin Package
AD7895ARZ-3	ADI	获取价格	True Bipolar Input, 5 V Single Supply, 12-Bit, Serial 3.8 µs ADC in 8-Pin Package
AD7895ARZ-3REEL	ADI	获取价格	True Bipolar Input, 5 V Single Supply, 12-Bit, Serial 3.8 µs ADC in 8-Pin Package
AD7895BR-10	ADI	获取价格	5 V, 12-Bit, Serial 3.8 ms ADC in 8-Pin Package
AD7895BR-2	ADI	获取价格	5 V, 12-Bit, Serial 3.8 ms ADC in 8-Pin Package
AD7895BRZ-10	ROCHESTER	获取价格	1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, SOIC-8

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