Instrumentation Amplifiers

Instrumentation amplifiers (sometimes shortened to In-Amps) are a type of precision gain block used in electronic and measurement test equipment. Instrumentation amplifiers act as a differential amplifier; a type of electronic amplifier that amplifies the voltage difference between two inputs but suppresses any voltage signals that are common to the two inputs. RS Components offer a range of instrumentation amplifiers from several trusted brands in the industry, including Analog Devices, Microchip, Texas Instruments, and more.

How do instrumentation amplifiers work?

Instrumentation amplifiers are almost always composed of 3 op-amps (operational amplifiers) and several resistors. They provide the most important function of CMR (common-mode rejection) by cancelling out any signals that have the same potential as received by both of the inputs. Any signals that have different potentials get amplified. They are used for low frequency signals (such as <1MHz), which they amplify whilst also cutting out any common-mode noise that may be present in the input signal.

What are the instrumentation amplifiers used for?

An instrumentation amplifier measures small signals in a noisy environment. The noise generally is "common-mode noise" (the difference between the noise-free common-mode voltage and the actual common-mode voltage). An instrumentation amplifier uses its common-mode rejection to distinguish the noise from the signal of interest. Instrumentation amplifiers are needed in nearly every field of electronics, particularly in the test and measurement industry. They can be used as a voltage follower, selective inversion circuit, a current-to-voltage converter, active rectifier, integrator, a variety of filters, and a voltage comparator.

Unlike instrumentation amplifiers (In Amp), operational amplifiers (Op-Amp) are high-gain voltage amplifying devices with a differential input.

Typical applications

  • Test & Measurement Industrial Devices
  • Data Acquisition Devices
  • Medical Devices

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Omschrijving Prijs Power Supply Type Package Type Mounting Type Typical Single Supply Voltage Pin Count Typical Dual Supply Voltage Rail to Rail Maximum Input Offset Voltage Minimum Operating Temperature Maximum Operating Temperature Maximum Input Resistance Minimum CMRR Typical Gain Bandwidth Product Maximum Supply Current
Nieuw
RS-stocknr. 209-6062
FabrikantnummerAD8250ARMZ
FabrikantAnalog Devices
€ 8,306
Each (In a Tube of 50)
Aantal stuks
Single MSOP Surface Mount 15 V 10 - No ±6 - - - - 10MHz -
RS-stocknr. 697-7237
FabrikantnummerAD8221ARZ
FabrikantAnalog Devices
€ 5,61
Each
Aantal stuks
Dual SOIC Surface Mount - 8 ±12 V, ±15 V, ±3 V, ±5 V, ±9 V No 0.06mV -40 °C +125 °C 100GΩ 130dB 825kHz 1 mA
RS-stocknr. 661-2390
FabrikantnummerINA126EA/250
€ 2,89
Each
Aantal stuks
Dual MSOP Surface Mount 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V 8 ±15V No 0.5mV -40 °C +85 °C 1GΩ 74dB - 0.2 mA
RS-stocknr. 100-3845
FabrikantnummerINA114BU
€ 12,41
Each (In a Tube of 40)
Aantal stuks
Dual SOIC Surface Mount - 16 ±12 V, ±15 V, ±3 V, ±5 V, ±9 V - 50µV -40 °C +85 °C 10GΩ 115dB 1MHz 3 mA
RS-stocknr. 121-9396
FabrikantnummerPGA280AIPW
€ 5,853
Each (In a Tube of 60)
Aantal stuks
Single TSSOP Surface Mount 40 V 24 - Rail to Rail Input/Output 250µV -40 °C +125 °C - 140dB 6MHz ±10 mA
Nieuw
RS-stocknr. 922-3227
FabrikantnummerINA126EA/250
€ 1,797
Each (On a Reel of 250)
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 461-6514
FabrikantnummerINA114BU
€ 12,02
Each
Aantal stuks
Dual SOIC Surface Mount - 16 ±12 V, ±15 V, ±3 V, ±5 V, ±9 V No 50µV -40 °C +85 °C 10GΩ 115dB 1MHz 3 mA
Nieuw
RS-stocknr. 209-6063
FabrikantnummerAD8250ARMZ
FabrikantAnalog Devices
€ 9,30
Each
Aantal stuks
Single MSOP Surface Mount 15 V 10 - No ±6 - - - - 10MHz -
RS-stocknr. 100-0775
FabrikantnummerINA126UA
€ 2,45
Each (In a Tube of 75)
Aantal stuks
Dual SOIC Surface Mount 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V 8 ±15V - 0.5mV -40 °C +85 °C 1GΩ 74dB - 0.2 mA
RS-stocknr. 779-9035
FabrikantnummerLT1101SW#PBF
FabrikantAnalog Devices
€ 6,88
Each
Aantal stuks
Dual, Single SOIC Surface Mount 5 V 16 ±15V - 800µV 0 °C +70 °C 12GΩ 96dB 33kHz 105 μA
RS-stocknr. 660-4251
FabrikantnummerINA217AIP
€ 5,71
Each
Aantal stuks
Dual PDIP Through Hole - 8 ±15V No 250µV -40 °C +125 °C 0.06GΩ 70dB 3.4MHz -
RS-stocknr. 811-5790
FabrikantnummerLMP8358MA/NOPB
€ 5,77
Each
Aantal stuks
Dual, Single SOIC Surface Mount 2.7 5.5 V 14 ±1.35 ±2.75V Rail to Rail Output 15µV -40 °C +125 °C - 105dB 930kHz 2.2 mA
RS-stocknr. 759-0099
FabrikantnummerAD8495CRMZ
FabrikantAnalog Devices
€ 9,34
Each
Aantal stuks
Dual, Single MSOP Surface Mount 2.7 36 V 8 ±2.7 ±18V Rail to Rail Output - -40 °C +125 °C - - 25kHz 0.25 mA
RS-stocknr. 100-0745
FabrikantnummerINA103KP
€ 8,084
Each (In a Tube of 25)
Aantal stuks
Dual PDIP Through Hole - 16 ±15V - 30µV -40 °C +85 °C 0.06GΩ 100dB 6MHz -
RS-stocknr. 538-8406
FabrikantnummerAD524ARZ-16
FabrikantAnalog Devices
€ 17,78
Each
Aantal stuks
Dual SOIC W Surface Mount - 16 ±15V No 0.25mV -40 °C +85 °C 1GΩ 70dB 25MHz -
RS-stocknr. 162-7734
FabrikantnummerLMP8358MA/NOPB
€ 4,96
Each (In a Tube of 55)
Aantal stuks
Dual, Single SOIC Surface Mount 2.7 5.5 V 14 ±1.35 ±2.75V Rail to Rail Output 15µV -40 °C +125 °C - 105dB 930kHz 2.2 mA
RS-stocknr. 412-327
FabrikantnummerAD620BNZ
FabrikantAnalog Devices
€ 14,59
Each
Aantal stuks
Dual PDIP Through Hole - 8 ±12 V, ±15 V, ±3 V, ±5 V, ±9 V No 50µV -40 °C +85 °C 10GΩ 80dB 120kHz -
RS-stocknr. 764-8747
FabrikantnummerAD8429ARZ
FabrikantAnalog Devices
€ 7,59
Each
Aantal stuks
Dual SOIC Surface Mount - 8 ±4 ±18V No 150µV -40 °C +125 °C 1.5GΩ 134dB 15MHz 7 mA
RS-stocknr. 828-684
FabrikantnummerINA103KP
€ 9,18
Each
Aantal stuks
Dual PDIP Through Hole - 16 ±15V No 30µV -40 °C +85 °C 0.06GΩ 100dB 6MHz -
RS-stocknr. 806-8013
FabrikantnummerAD8494ARMZ
FabrikantAnalog Devices
€ 5,28
Each
Aantal stuks
Dual, Single MSOP Surface Mount 2.7 36 V 8 ±2.7 ±18V - - -40 °C +125 °C 60kΩ - 30kHz 250 μA