参数资料
| 型号： | AD8226BRZ-R7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 14/28页 |
| 文件大小： | 0K |
| 描述： | IC INSTR AMP RRO +/-18 8SOIC |
| 标准包装： | 1,000 |
| 放大器类型： | 仪表 |
| 电路数： | 1 |
| 输出类型： | 满摆幅 |
| 转换速率： | 0.6 V/µs |
| -3db带宽： | 1.5MHz |
| 电流 - 输入偏压： | 20nA |
| 电压 - 输入偏移： | 100µV |
| 电流 - 电源： | 350µA |
| 电流 - 输出 / 通道： | 13mA |
| 电压 - 电源，单路/双路(±)： | 2.2 V ~ 36 V，±1.35 V ~ 18 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 带卷 (TR) |
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Data Sheet
AD8226
Rev. C | Page 21 of 28
Common-Mode Rejection Ratio Over Frequency
Poor layout can cause some of the common-mode signals to be
converted to differential signals before reaching the in-amp.
Such conversions occur when one input path has a frequency
response that is different from the other. To keep CMRR across
frequency high, the input source impedance and capacitance of
each path should be closely matched. Additional source resistance
in the input path (for example, for input protection) should be
placed close to the in-amp inputs, which minimizes their
interaction with parasitic capacitance from the PCB traces.
Parasitic capacitance at the gain-setting pins can also affect
CMRR over frequency. If the board design has a component
at the gain-setting pins (for example, a switch or jumper), the
part should be chosen so that the parasitic capacitance is as
small as possible.
Power Supplies
A stable dc voltage should be used to power the instrumentation
amplifier. Note that noise on the supply pins can adversely affect
performance. For more information, see the PSRR performance
curves in Figure 23 and Figure 24.
A 0.1 μF capacitor should be placed as close as possible to each
supply pin. As shown in Figure 61, a 10 μF tantalum capacitor
can be used farther away from the part. In most cases, it can be
shared by other precision integrated circuits.
AD8226
+VS
+IN
–IN
LOAD
REF
0.1F
10F
0.1F
10F
–VS
VOUT
07
03
6-
00
6
Figure 61. Supply Decoupling, REF, and Output Referred to Local Ground
References
The output voltage of the AD8226 is developed with respect to
the potential on the reference terminal. Care should be taken to
tie REF to the appropriate local ground.
INPUT BIAS CURRENT RETURN PATH
The input bias current of the AD8226 must have a return path
to ground. When the source, such as a thermocouple, cannot
provide a return current path, one should be created, as shown
THERMOCOUPLE
+VS
REF
–VS
AD8226
CAPACITIVELY COUPLED
+VS
REF
C
–VS
AD8226
TRANSFORMER
+VS
REF
–VS
AD8226
INCORRECT
CAPACITIVELY COUPLED
+VS
REF
C
R
C
–VS
AD8226
1
fHIGH-PASS = 2πRC
THERMOCOUPLE
+VS
REF
–VS
10M
AD8226
TRANSFORMER
+VS
REF
–VS
AD8226
CORRECT
0
70
36
-00
7
Figure 62. Creating an IBIAS Path
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8226BRZ-RL | 功能描述:IC INSTR AMP RRO +/-18 8SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:1 系列:- 放大器类型:通用 电路数:4 输出类型:满摆幅 转换速率:0.6 V/µs 增益带宽积:1MHz -3db带宽:- 电流 - 输入偏压:2pA 电压 - 输入偏移:1000µV 电流 - 电源:85µA 电流 - 输出 / 通道:20mA 电压 - 电源，单路/双路(±):1.8 V ~ 6 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SOICN 包装:剪切带 (CT) 产品目录页面:680 (CN2011-ZH PDF) 其它名称:MCP6L04T-E/SLCT |
| AD8226CRMZ | 制造商:AD 制造商全称:Analog Devices 功能描述:Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier |
| AD8226CRMZ-R7 | 制造商:AD 制造商全称:Analog Devices 功能描述:Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier |
| AD8226CRMZ-RL | 制造商:AD 制造商全称:Analog Devices 功能描述:Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier |
| AD8226CRZ | 制造商:AD 制造商全称:Analog Devices 功能描述:Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier |
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