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參數(shù)資料
型號(hào): AD8221ARM
廠商: ANALOG DEVICES INC
元件分類: 運(yùn)動(dòng)控制電子
英文描述: Single Supply, Rail-to-Rail, Low Cost Instrumentation Amplifier
中文描述: INSTRUMENTATION AMPLIFIER, 60 uV OFFSET-MAX, 0.825 MHz BAND WIDTH, PDSO8
封裝: MO-187AA, MSOP-8
文件頁(yè)數(shù): 16/20頁(yè)
文件大小: 1283K
代理商: AD8221ARM
AD8221
RF INTERFERENCE
RF rectification is often a problem when amplifiers are used in
applications where there are strong RF signals. The disturbance
may appear as a small dc offset voltage. High frequency signals
can be filtered with a low-pass R-C network placed at the input
of the instrumentation amplifier, as shown in Figure 49. The
filter limits the input signal bandwidth according to the
following relationship:
Rev. A | Page 16 of 20
C
D
affects the difference signal and C
C
affects the common-
mode signal. Values of R and C
C
should be chosen to minimize
RFI. Mismatch between the R × C
C
at the positive input and the
R × C
C
at negative input will degrade the AD8221’s CMRR. By
using a value of C
D
one magnitude larger than C
C
, the effect of
the mismatch is reduced, and hence, performance is improved.
PRECISION STRAIN GAGE
The AD8221’s low offset and high CMRR over frequency make
it an excellent candidate for bridge measurements. As shown in
Figure 50, the bridge can be directly connected to the inputs of
the amplifier.
)
2
R
π
2
1
C
D
Diff
C
C
FilterFreq
+
=
C
CM
RC
π
FilterFreq
2
1
=
+5V
+2.5V
0
10
μ
F
0.1
μ
F
AD8221
+IN
–IN
R
350
350
350
350
+
where
C
D
10
C
C
.
R
R
AD8221
+15V
+IN
–IN
0.1
μ
F
10
μ
F
10
μ
F
0.1
μ
F
REF
V
OUT
–15V
R1
499
C
D
C
C
C
C
10nF
1nF
1nF
0
4.02k
4.02k
Figure 50. Precision Strain Gage
Figure 49. RFI Suppression
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD8221ARM-REEL 功能描述:IC AMP INST PREC LN 18MA 8MSOP RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 放大器類型:通用 電路數(shù):1 輸出類型:- 轉(zhuǎn)換速率:0.2 V/µs 增益帶寬積:- -3db帶寬:- 電流 - 輸入偏壓:100pA 電壓 - 輸入偏移:30µV 電流 - 電源:380µA 電流 - 輸出 / 通道:- 電壓 - 電源,單路/雙路(±):±2 V ~ 18 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC(0.154",3.90mm 寬) 供應(yīng)商設(shè)備封裝:8-SO 包裝:管件
AD8221ARMREEL7 制造商:AD 制造商全稱:Analog Devices 功能描述:Precision Instrumentation Amplifier
AD8221ARM-REEL7 功能描述:IC AMP INST PREC LN 18MA 8MSOP RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 放大器類型:通用 電路數(shù):1 輸出類型:- 轉(zhuǎn)換速率:0.2 V/µs 增益帶寬積:- -3db帶寬:- 電流 - 輸入偏壓:100pA 電壓 - 輸入偏移:30µV 電流 - 電源:380µA 電流 - 輸出 / 通道:- 電壓 - 電源,單路/雙路(±):±2 V ~ 18 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC(0.154",3.90mm 寬) 供應(yīng)商設(shè)備封裝:8-SO 包裝:管件
AD8221ARMZ 功能描述:IC AMP INST PREC LN 18MA 8MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:- 轉(zhuǎn)換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:45nA 電壓 - 輸入偏移:2000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:40mA 電壓 - 電源,單路/雙路(±):3 V ~ 32 V,±1.5 V ~ 16 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP(0.173",4.40mm 寬) 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱:LM324ADTBR2G-NDLM324ADTBR2GOSTR
AD8221ARMZ 制造商:Analog Devices 功能描述:AMP INSTRUMENT HI CMRR SMD 8221
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