仪表放大器

仪表放大器是精密增益模块,输入为差分式,输出可以是差分式,也可以是相对于参考端的单端式。这些器件能够放大两个输入信号电压之间的差值,同时抑制两个输入端共有的任何信号。仪表放大器广泛用于许多工业、测量、数据采集和医疗应用,这些应用要求在高噪声环境下保持直流精度和增益精度,而且其中存在大共模信号(通常为交流电力线频率)。ADI公司为每一种应用和市场提供种类齐全的精密、低噪声、低功耗和高共模抑制比(CMRR)的仪表放大器。

可编程增益仪表放大器(PGiA)是一种特殊形式的仪表放大器,具有固定增益级。适当的增益级通过数字方式选择,即通过专用编程引脚或软件接口(SPI或I2C)。PGiA特别适合如下的应用:要求最高增益精度,或者利用单个PGiA来代替多个增益设置不同的仪表放大器。

从以下选型表中选择器件以下载数据手册和申请样片。

AD62x和AD822x系列提供通用评估板 。对于其它产品,请点击下面的产品型号,并使用产品页面上列出的评估板。

有关ADI公司放大器产品的问题,请访问中文技术论坛放大器支持社区

Circuit from the lab 已完成设计、测试,可供立即集成

产品选型表



所有设计工具

  • 滤波器 滤波器
  • 光电二极管 光电二极管
  • 放大器工具 放大器工具
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Instrumentation Amplifiers

Part# 中文数据手册Single/Dual SupplyVsupply Span (min)Vsupply Span (max)Bandwidth at min gain (typGain V/V (min)Gain V/V (max)Gain Setting MethodVoltage Noise RTIInput Headroom from V-Supply CurrentBias CurrentMin CMRR @60Hz Max GainMin CMRR @ 60 Hz Min GainInput Voltage NoiseUS-Price-1000-to-4999In Amp Architecture
AD8417  -------------- $0.99-
AD8418A  -------------- $0.99-
AD8418
 
-------------- $0.89-
AD8422
 
-3.6V36V2.2MHz1V/V1KV/V-150nV p-p-1.2V300µA200pA150dB94dB8nV/rtHz $2.1In-Amp
AD8479
 
-5V36V130KHz1V/V1V/V-30µV p-p-650µA---90dB- $2.81Difference Amp
AD8232
 
-2V3.5V2KHz100V/V100V/V-14µV p-p-170µA50pA80dB80dB100nV/rtHz $1.36In-Amp
AD8237Reference Circuit Available
 
Single1.8V5.5V200KHz1V/V10KV/VResistor1.5µV p-p300mV115µA250pA114dB106dB68nV/rtHz $0.93In-Amp
AD8420Reference Circuit Available
 
Single/Dual2.7V36V250KHz1V/V1KV/VResistor1.5µV p-p-80µA20nA100dB100dB55nV/rtHz $0.89In-Amp
AD8421
 
Dual5V36V10MHz1V/V1KV/VResistor2µV p-p2.3V2.3mA100pA140dB94dB3nV/rtHz $2.35In-Amp
AD8428
 
Dual8V36V3.5MHz2KV/V2KV/Vfixed40nV p-p-6.5mA200nA130dB130dB1.5nV/rtHz $6.6In-Amp
ADA4830-1Reference Circuit Available
 
Single2.9V5.5V------6.8mA---- $0.61Difference Amp
AD8426
 
Single/Dual2.2V36V1.5MHz1V/V1KV/VResistor500nV p-p100mV350µA20nA110dB90dB24µV/rtHz $2.2In-Amp
AD8429
 
Dual8V36V15MHz1V/V1KV/VResistor2µV p-p-6.7mA150nA140dB90dB1nV/rtHz $3.5In-Amp
AD8218
 
-4V80V450KHz20V/V20V/V---800µA---- $1.05Current Sense
AD8219
 
-4V80V500KHz60V/V60V/V---800µA---- $0.95Current Sense
AD5749
 
-12V55V----------- $1.8-
AD8207  Single4.5V5.5V150KHz20V/V20V/Vfixed--2.5mA---- $2.29Current Sense
AD8217
 
-4.5V80V500KHz20V/V20V/V---800µA---- $0.99Current Sense
AD8208
 
Single4.5V5.5V70KHz20V/V20V/VPin--1.6mA---- $1.67Current Sense
AD8209  Single4.5V5.5V80KHz20V/V20V/V---1.6mA---- $1.67Current Sense
AD8235  Single1.8V5.5V23KHz5V/V200V/VResistor4µV p-p-40µA1pA110dB94dB76nV/rtHz $0.99In-Amp
AD8279  -2V36V1MHz500mV/V2V/Vfixed--200µA---47nV/rtHz $1.6Difference Amp
AD8277
 
Single/Dual2V36V550KHz1V/V1V/V---200µA---65nV/rtHz $1.6Difference Amp
AD8278  -2V36V1MHz500mV/V2V/V---200µA---47nV/rtHz $0.95Difference Amp
AD8227Reference Circuit Available  Single/Dual2.2V36V250KHz5V/V1KV/VResistor1.5µV p-p-0.1V400µA20nA105dB90dB24nV/rtHz $1.04In-Amp
AD8236
 
Single1.8V5.5V23KHz5V/V200V/VResistor4µV p-p-40µA1nA110dB94dB70nV/rtHz $0.99In-Amp
AD8276Reference Circuit Available
 
Single/Dual2V36V550KHz1V/V1V/Vfixed--200µA--86dB65nV/rtHz $0.95Difference Amp
AD8226Reference Circuit Available
 
Single/Dual2.2V36V1.5MHz1V/V1KV/VResistor2µV p-p-0.1V400µA20nA105dB80dB22nV/rtHz $1.05In-Amp
AD8271Reference Circuit Available  Dual5V36V20MHz500mV/V2V/V---2.6mA---38V/rtHz $1.25Difference Amp
AD8223  Single/Dual3V24V125KHz5V/V1KV/VResistor1µV p-p150mV500µA12nA90dB80dB30nV/rtHz $1.05In-Amp
AD8274Reference Circuit Available  Dual5V36V20MHz500mV/V2V/V---2.6mA---26nV/rtHz $1.05Difference Amp
AD8275Reference Circuit Available  Single3.3V15V15MHz200mV/V200mV/VResistor--1.9mA-96dB96dB40nV/rtHz $1.6Difference Amp
AD8295Reference Circuit Available  Dual4.6V36V1.2MHz1V/V1KV/VResistor2µV p-p1.9V2.3mA200pA130dB80dB8nV/rtHz $2.03In-Amp
AD8228
 
Dual4.6V36V650KHz10V/V100V/VPin500nV p-p1.9V1mA400pA120dB100dB8nV/rtHz $3.03In-Amp
AD8253Reference Circuit Available
 
Dual10V34V10MHz1V/V1KV/VDigital, Pin2.5µV p-p1V5.3mA5nA100dB80dB10nV/rtHz $4.95In-Amp
AD8293G160
 
Single1.8V5.5V500KHz160V/V160V/Vfixed700nV p-p-1.3mA400pA94dB94dB35nV/rtHz $0.5Current Sense, In-Amp
AD8293G80
 
Single1.8V5.5V500KHz80V/V80V/Vfixed700nV p-p-1.3mA400pA94dB94dB35nV/rtHz $0.5Current Sense, In-Amp
AD8215  Single4.5V5.5V450KHz20V/V20V/Vfixed--2.2mA-100dB100dB- $1.21Current Sense
AD8270  Dual5V36V20MHz500mV/V2V/VPin--2.5mA-80dB70dB38V/rtHz $1.91Difference Amp
AD8273Reference Circuit Available  Dual5V36V20MHz500mV/V2V/VPin--2.5mA--77dB26nV/rtHz $1.6Difference Amp
AD8216  Single4.5V5.5V3MHz3V/V3V/Vfixed--2mA-80dB80dB- $1.62Current Sense
AD8211  Single4.5V5.5V500KHz20V/V20V/Vfixed--2mA-100dB100dB- $0.81Current Sense
AD8290  Single2.6V5.5V250Hz50V/V50V/Vfixed750nV p-p200mV1.8mA100pA110dB110dB35nV/rtHz $1.52Difference Amp, In-Amp
AD8557  Single2.7V5.5V600KHz28V/V1.3KV/VDigital500nV p-p600mV1.8mA18nA96dB75dB32nV/rtHz $2.13In-Amp
AD8212Reference Circuit Available  Single7V65V1MHz--Resistor--720µA-100dB100dB- $1.32Current Sense
AD8213  Single4.5V5.5V500KHz20V/V20V/Vfixed--2.5mA-100dB100dB- $2.01Current Sense
AD8231  Single3V6V2.7MHz1V/V128V/VDigital, Pin1.1µV p-p-5mA250pA110dB80dB32nV/rtHz $1.71In-Amp
AD8251  Dual10V34V10MHz1V/V8V/VDigital, Pin2.5µV p-p1.5V4.5mA5nA98dB80dB18nV/rtHz $5.01In-Amp
AD8224  Single/Dual4.6V36V1.5MHz1V/V1KV/VResistor5µV p-p-0.1V750µA10pA94dB78dB14nV/rtHz $4.17In-Amp
AD8250  Dual10V34V10MHz1V/V10V/VDigital, Pin2.5µV p-p1.5V4.5mA5nA98dB80dB18nV/rtHz $5.01In-Amp
AD8214  Single5V65V---Resistor--1.2mA-80dB80dB- $0.76Current Sense
ADM1191  -------------- $1.92-
ADM1192  -------------- $1.92-
AD8222  Dual3V24V1.2MHz1V/V1KV/VResistor2µV p-p1.9V1.1mA200pA130dB80dB8nV/rtHz $3.63In-Amp
ADM4073  Single3V28V1.8MHz20V/V100V/V---1.2mA---- $0.99Current Sense
AD8210Reference Circuit Available  Single4.5V5.5V500KHz20V/V20V/Vfixed--1.5mA-100dB100dB- $1.81Current Sense
AD8220Reference Circuit Available  Single/Dual4.6V36V1.5MHz1V/V1KV/VResistor5µV p-p-0.1V750µA10pA94dB78dB14nV/rtHz $2.32In-Amp
AD8553  Single1.8V5.5V1KHz1V/V1KV/VResistor700nV p-p-1.3mA400pA120dB80dB27nV/rtHz $1.32In-Amp
AD8206  Single4.5V5.5V100KHz20V/V20V/Vfixed--2mA-76dB76dB- $1.37Current Sense
AD8556  Single4.5V5.5V280KHz70V/V1.28KV/VDigital500nV p-p2.1V2.7mA49nA94dB80dB32nV/rtHz $2.88In-Amp
AD8203  Single3.5V12V60KHz14V/V14V/Vfixed--250µA-82dB82dB- $1.37Current Sense
AD8230  Single/Dual8V16V2KHz2V/V1KV/VResistor3µV p-p0V3.5mA33pA110dB110dB240nV/rtHz $2.99In-Amp
AD8202  Single3.5V12V50KHz20V/V20V/Vfixed--250µA-82dB82dB275V/rtHz $1.51Current Sense
AD8205  Single4.5V5.5V50KHz50V/V50V/Vfixed--2mA-78dB78dB- $1.51Current Sense
AD8221Reference Circuit Available
 
Dual4.6V36V825KHz1V/V1KV/VResistor2µV p-p1.9V1mA200pA130dB80dB8nV/rtHz $2.01In-Amp
AD628Reference Circuit Available  Single/Dual4.5V36V600KHz100mV/V100V/VPin, Resistor--1.6mA-75dB75dB300V/rtHz $1.82Difference Amp
AD8225  Dual3.4V36V900KHz5V/V5V/Vfixed1.5µV p-p1.6V1.2mA500pA86dB86dB45nV/rtHz $3.36In-Amp
AD629Reference Circuit Available  Dual5V36V500KHz1V/V1V/Vfixed--1mA-77dB77dB550V/rtHz $2.9Difference Amp
AD627  Single/Dual2.2V36V80KHz5V/V1KV/VResistor--0.1V85µA3nA77dB77dB38nV/rtHz $2.61In-Amp
AD623  Single/Dual2.7V12V800KHz1V/V1KV/VResistor2µV p-p-0.15V550µA17nA105dB70dB35nV/rtHz $1.43In-Amp
AD622  Dual5.2V36V1MHz1V/V1KV/VResistor4µV p-p1.9V1.3mA2nA103dB66dB12nV/rtHz $2.56In-Amp
AD22057  Single3V26V30KHz20V/V20V/V---500µA---- $4.71Current Sense
AMP04  Single/Dual5V36V700KHz1V/V1KV/VResistor7µV p-p0V900µA22nA75dB50dB25nV/rtHz $5.6In-Amp
AD621  Dual4.6V36V800KHz10V/V100V/VPin550nV p-p1.9V1.3mA500pA110dB93dB9nV/rtHz $4.34In-Amp
AD626  Single/Dual2.4V10V100KHz10V/V100V/VPin--2mA-55dB55dB- $3.77Current Sense, Difference Amp
AD620Reference Circuit Available
 
Dual4.6V36V1MHz1V/V10KV/VResistor3µV p-p1.9V1.3mA500pA110dB73dB9nV/rtHz $3.38In-Amp
AMP02  Dual9V36V1.2MHz1V/V10KV/VResistor1.2µV p-p4V6mA2nA110dB75dB9nV/rtHz $6.16In-Amp
AMP03  Dual12V36V3MHz1V/V1V/Vfixed-5V2.5mA-85dB85dB90V/rtHz $3.1Difference Amp
AD526  Dual9V33V350KHz1V/V16V/VDigital3µV p-p5V14mA50pA--30nV/rtHz $6.85In-Amp
AD625  Dual12V36V650KHz1V/V10KV/VResistor10µV p-p3V5mA50nA110dB70dB4nV/rtHz $9.41In-Amp
AD624  Dual12V36V1MHz1V/V1KV/VPin10µV p-p3V5mA15nA110dB70dB4nV/rtHz $22.1In-Amp
AMP01  Dual--570KHz100mV/V10KV/VResistor13µV p-p-4.8mA1nA--- $10.44In-Amp
AD524  Dual12V36V1MHz1V/V1KV/VPin15µV p-p3V5mA25nA110dB70dB7nV/rtHz $9.52In-Amp
AD522  Dual10V36V30KHz--Resistor-5V8mA25nA100dB75dB- ** In-Amp
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4-20 mA Drivers

Part# 中文数据手册ChannelsInput Voltage RangeVoltage Output RangesSettling Time (µs)Drift (ppm/°C)Current Output RangesCurrent Drift (ppm/°C)Input FormatVoltage Supply (min)Voltage Supply (max)Operating Temp RangeVREFFeaturesCurrent Output TUE (%FS)Output Voltage (TUE) (%)US Price 1000-4999
AD5749
 
10 to 4.096 V---0 to 24 mA, 4 to 20 mA5ppm/CSPI12V55V-40 to +1054.096VFault Detection, PEC, ASYN CLR0.15%- $1.8
AD5748
 
10 to 4.096 V+/- 10 V, 0 to 10 V, 0 to 5 V7µs3ppm/C0 to 20 mA, 4 to 20 mA5ppm/CSPI12V48V-40 to +1054.096V-0.15%0.05% $2.15
AD5751Reference Circuit Available  10 to 4.096 V0 to 10 V, 0 to 40 V, 0 to 5 V7µs3ppm/C0 to 20 mA, 0 to 24 mA, 4 to 20 mA5ppm/CSPI10.8V55V-40 to +1054.096VOutput Fault Detection, PEC, ASYN CLR, 0 V or Tristate0.08%0.05% $3.01
AD5750Reference Circuit Available
 
10 to 4.096 V+/- 10 V, +/- 5 V, 0 to 10 V, 0 to 5 V7µs3ppm/C+/- 20 mA, +/- 24 mA, 0 to 20 mA, 0 to 24 mA, 4 to 20 mA5ppm/CSPI12V24V-40 to +1054.096VOutput Fault Detection, PEC, ASYNC CLR, 0 V or Tristate0.03%0.02% $2.45
AD5750-1Reference Circuit Available
 
10 to 2.5 V+/- 10 V, +/- 5 V, 0 to 10 V, 0 to 5 V7µs3ppm/C+/- 20 mA, +/- 24 mA, 0 to 20 mA, 0 to 24 mA, 4 to 20 mA5ppm/CSPI12V24V-40 to +1051.25VOutput Fault Detection, PEC, Asyn CLR, 0 V or Tristate0.03%0.02% $2.45
AD5410Reference Circuit Available
 
----26ppm/C-7ppm/CSPI10.8V60V-40 to +85--0.1%- $3.75
AD5420Reference Circuit Available
 
----38ppm/C-7ppm/CDigital10V60V-40 to +85--0.6%- $4.95
AD421
 
----50ppm/C--Digital2.95V5.05V-40 to +85---- $6.83
AD420  ---2.5ms20ppm/C--Digital12V32V-40 to +85---- $11.58
AD693  -------Analog---40 to +85---- $8.31
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Programmable Gain Instrumentation Amplifiers

Part# 中文数据手册Single/Dual SupplyV Span MinV Span MaxBandwidth @ G=10Min CMRR @60Hz Max GainMin CMRR @ 60 Hz Min GainInput Headroom from V-Gain Setting MethodSupply CurrentGain (min)Gain (max)
AD8253Reference Circuit Available
 
Dual10V34V10MHz100dB80dB1VDigital, Pin5.3mA1V/V1KV/V
AD8557  Single2.7V5.5V600KHz96dB75dB600mVDigital1.8mA28V/V1.3KV/V
AD8231  Single3V6V2.7MHz110dB80dB-Digital, Pin5mA1V/V128V/V
AD8251  Dual10V34V10MHz98dB80dB1.5VDigital, Pin4.5mA1V/V8V/V
AD8250  Dual10V34V10MHz98dB80dB1.5VDigital, Pin4.5mA1V/V10V/V
AD8556  Single4.5V5.5V280KHz94dB80dB2.1VDigital2.7mA70V/V1.28KV/V
AD526  Dual9V33V350KHz--5VDigital14mA1V/V16V/V
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