Datasheet 搜索 > 仪表放大器 > ADI（亚德诺） > AD8220BRMZ 数据手册 > AD8220BRMZ 其他数据使用手册 1/16 页
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AD8220BRMZ 其他数据使用手册 - ADI（亚德诺）
制造商:
ADI（亚德诺）
分类:
仪表放大器
封装:
MSOP-8
描述:
ANALOG DEVICES AD8220BRMZ 仪器放大器, 1个放大器, 125 µV, 2 V/µs, 800 kHz, ± 2.25V 至 ± 18V, MSOP
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AD8220BRMZ数据手册
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若手册格式错乱，请下载阅览PDF原文件
PLC Demo System User Guide
UG-181
One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel : 781.329.4700 • Fax: 781.461.3113 • www.analog.com
PLC Demo System, Industrial Process Control Demo System
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. A | Page 1 of 16
FEATURES
EMC performance tested
Inputs selectable: 0 mA to 20 mA, 4 mA to 20 mA, 0 V to 5 V,
0 V to 10 V, ±5 V, ±10 V, RTD, TC
Outputs programmable: 0 mA to 20 mA, 0 mA to 24 mA,
4 mA to 20 mA, 0 V to 5 V, 0 V to 10 V, ±5 V, ±10 V
Four isolated 24-bit analog input channels
AD7793 24-bit sigma-delta (Σ-Δ) ADC, 40 nV noise
AD8220 instrumentation amplifier, >80 dB CMRR
ADuM5401 isoPower® integrated, isolated dc-to-dc
converter, 500 mW output power
ADR441 precision 2.5 V reference
4 isolated 16-bit analog output channels
AD5422 single-channel, 16-bit, serial input, current source
and voltage output DAC
0.01% typical total unadjusted error (TUE)
Single chip solution
Output fault detection and protection
Power/interface/control
Analog Devices, Inc., ARM7 ADuC7027
ADP1715 500 mA low-dropout CMOS linear regulator
ADM3251E isolated single-channel RS-232 line
driver/receiver
APPLICATIONS
Process control
Transmitters
Actuator control
PLC/DCS systems
GENERAL DESCRIPTION
The PLC demonstration system is aimed at demonstrating the
value Analog Devices devices can add to a PLC system. The
demo board contains four fully isolated ADC channels, a micro-
processor with RS-232 interface and four fully isolated DAC
output channels.
Input ranges are hardware programmable and include 0 V to
5 V, 0 V to 10 V, ±5 V, ±10 V, 4 mA to 20 mA, 0 mA to 20 mA,
±20 mA, thermocouple and RTD. Output ranges are software
p r o g r a m m a b l e a n d i n c l u d e 0 V t o 5 V, 0 V t o 1 0 V, ± 5 V, ± 1 0 V,
4 mA to 20 mA, 0 mA to 20 mA, and 0 mA to 24 mA.
The PLC demo system features the AD5422 (a single-chip 16 bit
DAC solution with ±0.05% TUE) and AD7793 (low noise, low
power, 24-bit Σ-Δ ADC). Isolation is achieved using the
ADuM5401 (quad-channel isolator with integrated dc-to-dc
converter), ADuM1401 (quad-channel isolator), or ADM3251E
(fully isolated RS-232 transceiver).
Input signal conditioning is performed by the AD8220 (>80 dB
CMRR, JFET in-amp). Voltage references include the ADR441,
ADR445 (ultralow noise, XFET® voltage reference), and ADP1720
(50 mA, high voltage, micropower linear regulator).
Communications with the ADC and DAC channels take place
using the ADuC7027 microcontroller, which can be connected
to a PC via an isolated RS-232 interface.
ANALOG OUTPUTS
09257-001
SENSOR INPUTS
• RTD
• TC
• GAS
A
NALOG SIGNALS
VOLTAGE INPUTS
(FLOW, PRESSURE)
• 0V TO 5V, 0V TO 10V
• ±5V, ±10V
CURRENT INPUTS
(COMMUNICATIONS)
• 0mA TO 20mA
• 4mA TO 20mA
PLC
MODULE
BOARD
VOLTAGE OUTPUTS
• 0V TO 5V, 0V TO 10V
• ±5V, ±10V
CURRENT OUTPUTS
• 0mA TO 20mA
• 0mA TO 24mA
• 4mA TO 20mA
Figure 1. PLC System Level Diagram
09257-002
Figure 2. PLC Demo Board
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