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AD627ARZ-REEL7

更新时间： 2024-02-26 08:35:59
品牌 Logo 应用领域
亚德诺 - ADI 放大器光电二极管
页数 文件大小 规格书
25页 1129K
描述
INSTRUMENTATION AMPLIFIER, 200uV OFFSET-MAX, 0.08MHz BAND WIDTH, PDSO8, MS-012AA, SOIC-8

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AD627ARZ-REEL7 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：Obsolete零件包装代码：SOIC
包装说明：MS-012AA, SOIC-8针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.33.00.01风险等级：5.11
Is Samacsys：N放大器类型：INSTRUMENTATION AMPLIFIER
最大平均偏置电流 (IIB)：0.01 µA标称带宽 (3dB)：0.08 MHz
最小共模抑制比：77 dB最大输入失调电流 (IIO)：0.001 µA
最大输入失调电压：200 µVJESD-30 代码：R-PDSO-G8
JESD-609代码：e3长度：4.9 mm
湿度敏感等级：1负供电电压上限：-18 V
标称负供电电压 (Vsup)：-5 V最大非线性：0.001%
功能数量：1端子数量：8
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.75 mm标称压摆率：0.05 V/us
子类别：Instrumentation Amplifier供电电压上限：18 V
标称供电电压 (Vsup)：5 V表面贴装：YES
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
最大电压增益：1000最小电压增益：5
标称电压增益：10宽度：3.9 mm
Base Number Matches：1

AD627ARZ-REEL7 数据手册

 浏览型号AD627ARZ-REEL7的Datasheet PDF文件第19页浏览型号AD627ARZ-REEL7的Datasheet PDF文件第20页浏览型号AD627ARZ-REEL7的Datasheet PDF文件第21页浏览型号AD627ARZ-REEL7的Datasheet PDF文件第22页浏览型号AD627ARZ-REEL7的Datasheet PDF文件第24页浏览型号AD627ARZ-REEL7的Datasheet PDF文件第25页 
AD627  
APPLICATIONS CIRCUITS  
CLASSIC BRIDGE CIRCUIT  
4 TO 20 mA SINGLE-SUPPLY RECEIVER  
Figure 5± shows how a signal from a 4 to 20 mA transducer can  
be interfaced to the ADuC1±2, a ±2-bit ADC with an embedded  
microcontroller. The signal from a 4 to 20 mA transducer is  
single-ended, which initially suggests the need for a simple  
shunt resistor to convert the current to a voltage at the high  
impedance analog input of the converter. However, any line  
resistance in the return path (to the transducerꢀ adds a current  
dependent offset error; therefore, the current must be sensed  
differentially.  
Figure 50 shows the AD627 configured to amplify the signal  
from a classic resistive bridge. This circuit works in dual-supply  
mode or single-supply mode. Typically, the same voltage that  
powers the instrumentation amplifiers excites the bridge.  
Connecting the bottom of the bridge to the negative supply of  
the instrumentation amplifiers (usually 0 V, −5 V, −±2 V, or  
−±5 Vꢀ, sets up an input common-mode voltage that is  
optimally located midway between the supply voltages. It is  
also appropriate to set the voltage on the REF pin to midway  
between the supplies, especially if the input signal is bipolar.  
However, the voltage on the REF pin can be varied to suit the  
application. For example, the REF pin is tied to the VREF pin of  
an analog-to-digital converter (ADCꢀ whose input range is  
(VREF ± VINꢀ. With an available output swing on the AD627 of  
(−VS + ±00 mVꢀ to (+VS − ±50 mVꢀ, the maximum programmable  
gain is simply this output range divided by the input range.  
In this example, a 24.9 Ω shunt resistor generates a maximum  
differential input voltage to the AD627 of between ±00 mV  
(for 4 mA inꢀ and 500 mV (for 20 mA inꢀ. With no gain resistor  
present, the AD627 amplifies the 500 mV input voltage by a  
factor of 5, to 2.5 V, the full-scale input voltage of the ADC. The  
zero current of 4 mA corresponds to a code of 1±9 and the LSB  
size is 6±0 ꢁA.  
+V  
S
THERMOCOUPLE AMPLIFIER  
0.1µF  
Because the common-mode input range of the AD627 extends  
0.± V below ground, it is possible to measure small differential  
signals that have a low, or no, common-mode component.  
Figure 5± shows a thermocouple application where one side of  
the J-type thermocouple is grounded.  
200kΩ  
GAIN–5  
R
V
G =  
V
AD627  
OUT  
DIFF  
V
REF  
0.1µF  
Over a temperature range from −200°C to +200°C, the J-type  
thermocouple delivers a voltage ranging from −7.190 mV to  
+±0.777 mV. A programmed gain on the AD627 of ±00 (RG =  
2.± kΩꢀ and a voltage on the AD627 REF pin of 2 V result in the  
output voltage of the AD627 ranging from ±.±±0 V to 3.077 V  
relative to ground. For a different input range or different  
voltage on the REF pin, it is important to verify that the voltage  
on Internal Node A± (see Figure 37ꢀ is not driven below  
ground. This can be checked using the equations in the Input  
Range Limitations in Single-Supply Applications section.  
5V  
–V  
S
Figure ±0. Classic Bridge Circuit  
0.1µF  
J-TYPE  
THERMOCOUPLE  
R
2.1kΩ  
G
V
AD627  
OUT  
REF  
V
REF  
Figure ±1. Amplifying Bipolar Signals with Low Common-Mode ꢀoltage  
Rev. D | Page 22 of 24  
 
 
 
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