5秒后页面跳转
捷配首页

Datasheet > 转换器 > 模数转换器> AD7891
AD7891 PDF预览

AD7891

更新时间： 2024-11-15 22:53:31
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
20页 176K
描述
LC2MOS 8-Channel, 12-Bit High Speed Data Acquisition System

阅读下载

中文翻译

获取价格

AD7891 数据手册

 浏览型号AD7891的Datasheet PDF文件第2页浏览型号AD7891的Datasheet PDF文件第3页浏览型号AD7891的Datasheet PDF文件第4页浏览型号AD7891的Datasheet PDF文件第5页浏览型号AD7891的Datasheet PDF文件第6页浏览型号AD7891的Datasheet PDF文件第7页 
LC2MOS 8-Channel, 12-Bit  
a
High Speed Data Acquisition System  
AD7891  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
Fast 12-Bit ADC with 1.6 ␮s Conversion Time  
Eight Single-Ended Analog Input Channels  
Overvoltage Protection on Each Channel  
Selection of Input Ranges:  
؎5 V, ؎10 V for AD7891-1  
0 to +2.5 V, 0 to +5 V, ؎2.5 V for AD7891-2  
Parallel and Serial Interface  
REF OUT/  
REF IN  
V
V
DD  
REF GND  
DD  
V
IN1A  
+2.5V  
REFERENCE  
V
IN1B  
V
STANDBY  
IN2A  
AD7891  
V
IN2B  
V
IN3A  
V
IN3B  
On-Chip Track/Hold Amplifier  
On-Chip Reference  
Single Supply, Low Power Operation (85 mW max)  
Power-Down Mode (75 ␮W typ)  
V
12-BIT  
ADC  
IN4A  
M
U
X
V
IN4B  
V
IN5A  
V
IN5B  
TRACK/HOLD  
V
IN6A  
V
IN6B  
DATA/  
CONTROL  
LINES  
APPLICATIONS  
Data Acquisition Systems  
Motor Control  
Mobile Communication Base Stations  
Instrumentation  
V
ADDRESS  
DECODE  
IN7A  
V
IN7B  
V
IN8A  
V
IN8B  
CLOCK  
CONTROL LOGIC  
WR CS RD EOC CONVST MODE  
AGND AGND DGND  
PRODUCT HIGHLIGHTS  
GENERAL DESCRIPTION  
1. The AD7891 is a complete monolithic 12-bit data acquisition  
system combining an eight-channel multiplexer, 12-bit ADC,  
+2.5 V reference and track/hold amplifier on a single chip.  
The AD7891 is an eight-channel 12-bit data acquisition system  
with a choice of either parallel or serial interface structure. The  
part contains an input multiplexer, an on-chip track/hold ampli-  
fier, a high speed 12-bit ADC, a +2.5 V reference and a high  
speed interface. The part operates from a single +5 V supply  
and accepts a variety of analog input ranges across two models,  
the AD7891-1 (±5 V and ±10 V) and the AD7891-2 (0 V to  
+2.5 V, 0 V to +5 V and ±2.5 V).  
2. The AD7891-2 features a conversion time of 1.6 µs and an  
acquisition time of 0.4 µs. This allows a sample rate of  
500 kSPS when sampling one channel and 62.5 kSPS when  
channel hopping. These sample rates can be achieved using  
either a software or hardware convert start. The AD7891-1  
has an acquisition time of 0.6 µs when using a hardware  
convert start and an acquisition time of 0.7 µs when using a  
software convert start. These acquisition times allow sample  
rates of 454.5 kSPS and 435 kSPS respectively for hardware  
and software convert start.  
The AD7891 provides the option of either a parallel interface or  
serial interface structure determined by the MODE pin. The  
part has standard control inputs and fast data access times for  
both the serial and parallel interfaces which ensures easy inter-  
facing to modern microprocessors, microcontrollers and digital  
signal processors.  
3. Each channel on the AD7891 has overvoltage protection.  
This means that an overvoltage on an unselected channel  
does not affect the conversion on a selected channel. The  
AD7891-1 can withstand overvoltages of ±17 V.  
In addition to the traditional dc accuracy specifications such as  
linearity, full-scale and offset errors, the part is also specified for  
dynamic performance parameters including harmonic distortion  
and signal-to-noise ratio.  
Power dissipation in normal mode is 90 mW typical while in  
the standby mode this is reduced to 75 µW typ. The part is  
available in a 44-terminal plastic quad flatpack (PQFP) and a  
44-lead plastic leaded chip carrier (PLCC).  
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, 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  
© Analog Devices, Inc., 1998  
1234567...20

中文翻译

下载PDF

与AD7891相关器件

型号 品牌 获取价格 描述 数据表
AD7891_04 ADI

获取价格

 		LC2MOS 8-Channel, 12-Bit High Speed Data Acquisition System
AD7891_17 ADI

获取价格

 		8-Channel, 12-Bit High Speed Data Acquisition System
AD7891ACHIPS-1 ADI

获取价格

 		LC2MOS 8-Channel, 12-Bit High Speed Data Acquisition System
AD7891ACHIPS-2 ADI

获取价格

 		LC2MOS 8-Channel, 12-Bit High Speed Data Acquisition System
AD7891AP ADI

获取价格

 		LC2MOS 8-Channel, 12-Bit High Speed Data Acquisition System
AD7891AP-1 ADI

获取价格

 		LC2MOS 8-Channel, 12-Bit High Speed Data Acquisition System
AD7891AP-1REEL ADI

获取价格

 		LC2MOS 8-Channel, 12-Bit High Speed Data Acquisition System
AD7891AP-2 ADI

获取价格

 		LC2MOS 8-Channel, 12-Bit High Speed Data Acquisition System
AD7891AP-2REEL ADI

获取价格

 		LC2MOS 8-Channel, 12-Bit High Speed Data Acquisition System
AD7891APZ-1 ADI

获取价格

 		True Bipolar Input, Single Supply, Parallel, 8-Channel, 12-Bit High Speed Data Acquisition

与AD7891相关文章

您还可以找


热门产品
PCB打样/小批量
铝基板
BOM智能配单
PCBA制造
钣金
精密CNC
模具注塑
薄膜开关
精选活动
PCBA打样特惠
四六层板品质升级
铝基板品质升级
一体化电子制造
DFM下载
服务支持
企业认证
产品展示
工厂展示
工艺能力
积分商城
关于捷配
捷配简介
企业文化
公司动态
人才招聘
联系我们
帮助中心
下单流程
付款流程
开票流程
常见问题
全球PCB制造服务专线 400-613-0088

工作时间：9:00-21:00

CEO邮箱：ceo@jiepei.com

投诉邮箱：tousu@jiepei.com

捷配网-微信公众号 微信公众号
捷配网-微信公众号 抖音公众号
资质认证：
合作快递：
支付方式：
Copyright © 2024 Jiepei.com Inc. All Rights Reserved. 版权所有:杭州捷配信息科技有限公司 浙公网安备 33010502006866号 浙ICP备10014259号-119 营业执照ICP证