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
RS-stocknr. 820-9101
FabrikantnummerAD8422ARMZ
FabrikantAnalog Devices
€ 4,995
Each (In a Pack of 2)
Aantal stuks
Dual, Single MSOP Surface Mount 3.6 36 V 8 ±1.8 ±18V Rail to Rail Output 70µV -40 °C +85 °C 200GΩ 86dB 2.2MHz 1 nA
RS-stocknr. 523-8575
FabrikantnummerAD623ANZ
FabrikantAnalog Devices
€ 5,45
Each
Aantal stuks
Dual, Single PDIP Through Hole 3 V, 5 V, 9 V 8 ±3 V, ±5 V Rail to Rail Output 0.2mV -40 °C +85 °C 2GΩ 70dB - -
RS-stocknr. 111-2200
FabrikantnummerAD623ANZ
FabrikantAnalog Devices
€ 4,619
Each (In a Tube of 50)
Aantal stuks
Dual, Single PDIP Through Hole 3 V, 5 V, 9 V 8 ±3 V, ±5 V Rail to Rail Output 0.2mV -40 °C +85 °C 2GΩ 70dB - -
RS-stocknr. 121-6904
FabrikantnummerAD8421ARMZ
FabrikantAnalog Devices
€ 4,597
Each (In a Tube of 50)
Aantal stuks
Dual, Single MSOP Surface Mount 5 6 V 8 ±2.5 ±18V - 60µV -40 °C +85 °C 20kΩ 134dB 10MHz 2.3 mA
RS-stocknr. 806-7988
FabrikantnummerAD8421ARMZ
FabrikantAnalog Devices
€ 5,41
Each
Aantal stuks
Dual, Single MSOP Surface Mount 5 6 V 8 ±2.5 ±18V - 60µV -40 °C +85 °C 20kΩ 134dB 10MHz 2.3 mA
RS-stocknr. 660-5254
FabrikantnummerINA126P
€ 3,52
Each
Aantal stuks
Dual PDIP Through Hole 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V 8 ±15V No 0.25mV -40 °C +85 °C 1GΩ 83dB - 0.2 mA
RS-stocknr. 923-3546
FabrikantnummerINA126P
€ 2,887
Each (In a Tube of 50)
Aantal stuks
Dual PDIP Through Hole 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V 8 ±15V - 0.25mV -40 °C +85 °C 1GΩ 83dB - 0.2 mA
RS-stocknr. 522-9313
FabrikantnummerAD624ADZ
FabrikantAnalog Devices
€ 43,31
Each
Aantal stuks
Dual CDIP Through Hole - 16 ±15V No 0.2mV -25 °C +85 °C 1GΩ 75dB 25MHz -
RS-stocknr. 709-7086
FabrikantnummerAD8253ARMZ
FabrikantAnalog Devices
€ 8,98
Each
Aantal stuks
Dual MSOP Surface Mount - 10 ±12 V, ±9 V No 150µV -40 °C +85 °C 0.00002GΩ 80dB 10MHz -
RS-stocknr. 647-643
FabrikantnummerINA110KP
€ 14,61
Each
Aantal stuks
Dual PDIP Through Hole - 16 ±15V No 500µV -25 °C +85 °C 5000GΩ 106dB 2.5MHz 4.5 mA
RS-stocknr. 100-0743
FabrikantnummerINA110KP
€ 12,862
Each (In a Tube of 25)
Aantal stuks
Dual PDIP Through Hole - 16 ±15V - 500µV -25 °C +85 °C 5000GΩ 106dB 2.5MHz 4.5 mA
RS-stocknr. 806-5522
FabrikantnummerAD623ARZ
FabrikantAnalog Devices
€ 3,785
Each (In a Pack of 2)
Aantal stuks
Dual, Single SOIC Surface Mount 3 12 V 8 ±2.5 ±6V Rail to Rail Output 200µV -40 °C +85 °C - 90dB 800kHz 500 μA
RS-stocknr. 912-8135
FabrikantnummerAD623ARZ
FabrikantAnalog Devices
€ 3,212
Each (In a Tube of 98)
Aantal stuks
Dual, Single SOIC Surface Mount 3 12 V 8 ±2.5 ±6V Rail to Rail Output 200µV -40 °C +85 °C - 90dB 800kHz 500 μA
RS-stocknr. 778-5105
FabrikantnummerAD8237ARMZ
FabrikantAnalog Devices
€ 2,30
Each (In a Pack of 2)
Aantal stuks
Single MSOP Surface Mount 1.8 to 5.5 V 8 - Rail to Rail Input/Output 75µV -40 °C +125 °C - 106dB 6MHz 115 μA
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. 522-9717
FabrikantnummerAD620ANZ
FabrikantAnalog Devices
€ 9,71
Each
Aantal stuks
Dual PDIP Through Hole - 8 ±12 V, ±15 V, ±3 V, ±5 V, ±9 V No 0.125mV -40 °C +85 °C 10GΩ 73dB 1MHz -
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
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
- - - - - - - - - - - - - -
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 -