+VS C R C –V
參數(shù)資料
型號(hào): AD8420ARMZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 15/28頁(yè)
文件大小: 0K
描述: IC OP INSTR R-R MICROPWR 8-MSOP
標(biāo)準(zhǔn)包裝: 50
放大器類型: 儀表
電路數(shù): 1
輸出類型: 滿擺幅
轉(zhuǎn)換速率: 1 V/µs
-3db帶寬: 250kHz
電流 - 輸入偏壓: 20nA
電壓 - 輸入偏移: 250µV
電流 - 電源: 85µA
電流 - 輸出 / 通道: 10mA
電壓 - 電源,單路/雙路(±): 2.7 V ~ 36 V,±2.7 V ~ 18 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 8-TSSOP,8-MSOP(0.118",3.00mm 寬)
供應(yīng)商設(shè)備封裝: 8-MSOP
包裝: 管件
AD8420
Data Sheet
Rev. 0 | Page 22 of 28
CAPACITIVELY COUPLED
+VS
C
R
C
–VS
AD8420
1
fHIGH-PASS = 2πRC
THERMOCOUPLE
+VS
–VS
10M
AD8420
TRANSFORMER
+VS
–VS
AD8420
CORRECT
VOUT
THERMOCOUPLE
+VS
–VS
AD8420
CAPACITIVELY COUPLED
+VS
C
–VS
AD8420
TRANSFORMER
+VS
–VS
AD8420
INCORRECT
VOUT
09
94
5-
06
1
Figure 65. Creating an IBIAS Path
INPUT BIAS CURRENT RETURN PATH
The input bias current of the AD8420 must have a return path
to ground. When the source, such as a thermocouple, cannot
provide a return current path, create one, as shown in Figure 65.
RADIO FREQUENCY INTERFERENCE (RFI)
All instrumentation amplifiers can rectify high frequency out-of-
band signals. Once rectified, these signals appear as dc offset errors
at the output. High frequency signals can be filtered with a low-pass
RC network placed at the input of the instrumentation amplifier, as
shown in Figure 66. The filter limits the input signal bandwidth
according to the following relationship:
)
2
(
π
2
1
C
D
DIFF
C
R
uency
FilterFreq
+
=
C
CM
RC
uency
FilterFreq
π
2
1
=
where CD ≥ 10 C
VOUT
R1
R2
+IN
+VS
–VS
CC
330pF
5%
CC
330pF
5%
10F
CD
3300pF
0.1F
R
20k
1%
R
20k
1%
AD8420
–IN
09
945
-06
4
Figure 66. Suggested RFI Suppression Filter
CD affects the differential signal and CC affects the common-mode
signal. Values of R and CC are chosen to minimize out of band
RFI at the expense of reduced signal bandwidth. Mismatch
between the R × CC at the positive input and the R × CC at the
negative input degrades the CMRR of the AD8420. By using a
value of CD that is at least one magnitude larger than CC, the
effect of the mismatch is reduced and performance is improved.
C
.
相關(guān)PDF資料
PDF描述
SMF33AT1G TVS ZENER 200W 33V SOD123FL
LT1990CS8#PBF IC AMP DIFF +/-250V MCRPWR 8SOIC
AD8648ARUZ IC OPAMP GP R-R 24MHZ LN 14TSSOP
AD8628ARZ IC OPAMP CHOPPER R-R 30MA 8SOIC
76314-126 PV VCC .100 DR SGO
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD8420ARMZ_PROMO 制造商:Analog Devices 功能描述:IC AMP INSTR RRO MSOP-8
AD8420ARMZ-R7 功能描述:IC AMP INSTR RR 2.5KHZ 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):1 輸出類型:滿擺幅 轉(zhuǎn)換速率:0.11 V/µs 增益帶寬積:350kHz -3db帶寬:- 電流 - 輸入偏壓:4nA 電壓 - 輸入偏移:20µV 電流 - 電源:260µA 電流 - 輸出 / 通道:20mA 電壓 - 電源,單路/雙路(±):2.7 V ~ 36 V,±1.35 V ~ 18 V 工作溫度:-40°C ~ 85°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:帶卷 (TR)
AD8420ARMZ-RL 功能描述:IC AMP INSTR RR 2.5KHZ 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):1 輸出類型:滿擺幅 轉(zhuǎn)換速率:0.11 V/µs 增益帶寬積:350kHz -3db帶寬:- 電流 - 輸入偏壓:4nA 電壓 - 輸入偏移:20µV 電流 - 電源:260µA 電流 - 輸出 / 通道:20mA 電壓 - 電源,單路/雙路(±):2.7 V ~ 36 V,±1.35 V ~ 18 V 工作溫度:-40°C ~ 85°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:帶卷 (TR)
AD8420BRMZ 制造商:AD 制造商全稱:Analog Devices 功能描述:Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier
AD8420BRMZ-R7 制造商:AD 制造商全稱:Analog Devices 功能描述:Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier