Instrumentation amplifiers are a type of precision gain block, a differential amplifier (a type of electronic amplifier that amplifies the voltage difference between two inputs but suppresses any voltage common to the two inputs). Instrumentation Amplifiers are also known as in-amps.
Common applications are:
• Test & Measurement Industrial Devices
• Data Acquisition Devices
• Medical Devices
• Any noisy environment where large common-mode signals are present
How do instrumentation amplifiers work?
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.
What are the instrumentation amplifiers used for?
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.
Instrumentation Amplifiers
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| Description | Price | 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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RS Stock No.
829-0551
Mfr. Part No.MCP6N16-010E/MS
BrandMicrochip
|
HK$17.664
Each (In a Pack of 5)
units
|
Single | MSOP | Surface Mount | 1.8 5.5 V | 8 | - | Rail to Rail Output | 22µV | -40 °C | +125 °C | 1kΩ | 103dB | 5MHz | - |
|
RS Stock No.
660-4239
Mfr. Part No.INA118PB
BrandTexas Instruments
|
HK$152.21
Each
units
|
Dual | PDIP | Through Hole | - | 8 | ±15V | No | - | -40 °C | +125 °C | 10GΩ | 80dB | - | 0.385 mA |
|
RS Stock No.
197-7157
Mfr. Part No.INA126UA
BrandTexas Instruments
|
HK$29.012
Each (In a Pack of 5)
units
|
Dual | SOIC | Surface Mount | ±15 V | 8 | - | - | 250µV | - | - | - | - | - | - |
|
RS Stock No.
709-5083
Mfr. Part No.AD8251ARMZ
BrandAnalog Devices
|
HK$68.65
Each
units
|
Dual | MSOP | Surface Mount | - | 10 | ±12 V, ±9 V | No | - | -40 °C | +85 °C | - | 80dB | - | - |
|
RS Stock No.
759-2537
Mfr. Part No.AD8220WARMZ
BrandAnalog Devices
|
HK$64.34
Each
units
|
Dual, Single | MSOP | Surface Mount | 4.5 36 V | 8 | ±2.25 ±18V | Rail to Rail Output | 0.3mV | -40 °C | +125 °C | 10^4GΩ | 72dB | 1.5MHz | 750 mA |
|
RS Stock No.
697-7237
Mfr. Part No.AD8221ARZ
BrandAnalog Devices
|
HK$55.53
Each
units
|
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 Stock No.
779-9035
Mfr. Part No.LT1101SW#PBF
BrandAnalog Devices
|
HK$117.65
Each
units
|
Dual, Single | SOIC | Surface Mount | 5 V | 16 | ±15V | - | 800µV | 0 °C | +70 °C | 12GΩ | 96dB | 33kHz | 105 μA |
|
RS Stock No.
162-5017
Mfr. Part No.INA110KU
BrandTexas Instruments
|
HK$144.438
Each (In a Tube of 40)
units
|
Dual | SOIC | Surface Mount | - | 16 | ±15V | No | - | -25 °C | +85 °C | 5000GΩ | 106dB | - | 4.5 mA |
|
RS Stock No.
779-9110
Mfr. Part No.LT1167CS8#PBF
BrandAnalog Devices
|
HK$69.35
Each
units
|
Dual | SOIC | Surface Mount | - | 8 | ±2.3 → ±18V | - | 60µV | 0 °C | +70 °C | 1000GΩ | 120dB | 1MHz | 1.3 mA |
|
RS Stock No.
761-6028
Mfr. Part No.LM6144BIM/NOPB
BrandTexas Instruments
|
HK$85.31
Each
units
|
Single | SOIC | Surface Mount | 1.8 to 24 V | 14 | - | - | 1mV | -40 °C | +85 °C | 126MΩ | 107dB | 18MHz | - |
|
RS Stock No.
709-5409
Mfr. Part No.AD524CDZ
BrandAnalog Devices
|
HK$626.83
Each
units
|
Dual | CDIP | Through Hole | - | 16 | ±15V | No | 0.05mV | -40 °C | +85 °C | 1GΩ | 80dB | 25MHz | - |
|
RS Stock No.
923-3521
Mfr. Part No.INA111BP
BrandTexas Instruments
|
HK$158.628
Each (In a Tube of 50)
units
|
Dual | PDIP | Through Hole | - | 8 | ±15V | - | - | -40 °C | +85 °C | 10000GΩ | 80dB | - | 4.5 mA |
|
RS Stock No.
522-9313
Mfr. Part No.AD624ADZ
BrandAnalog Devices
|
HK$442.27
Each
units
|
Dual | CDIP | Through Hole | - | 16 | ±15V | No | 0.2mV | -25 °C | +85 °C | 1GΩ | 75dB | 25MHz | - |
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RS Stock No.
660-5285
Mfr. Part No.INA131BP
BrandTexas Instruments
|
HK$116.16
Each
units
|
Dual, Single | PDIP | Through Hole | 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V | 8 | ±15V | No | 0.05mV | -40 °C | +85 °C | 10GΩ | 110dB | - | 3 mA |
|
RS Stock No.
755-9552
Mfr. Part No.MCP6N11-010E/SN
BrandMicrochip
|
HK$11.895
Each (In a Pack of 2)
units
|
Single | SOIC | Surface Mount | 1.8 5.5 V | 8 | - | Rail to Rail Input/Output | 0.35V | -40 °C | +125 °C | - | 81dB | 5MHz | 0.8 mA |
|
RS Stock No.
660-5604
Mfr. Part No.PGA204BU
BrandTexas Instruments
|
HK$176.27
Each
units
|
Dual | SOIC | Surface Mount | - | 16 | ±15V | No | 50µV | -40 °C | +85 °C | 10GΩ | 80dB | - | 6.5 mA |
|
RS Stock No.
923-3546
Mfr. Part No.INA126P
BrandTexas Instruments
|
HK$34.966
Each (In a Tube of 50)
units
|
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 Stock No.
709-5761
Mfr. Part No.AD524ADZ
BrandAnalog Devices
|
HK$398.64
Each
units
|
Dual | SBCDIP | Through Hole | - | 16 | ±15V | No | 0.25mV | -40 °C | +85 °C | 1GΩ | 70dB | 25MHz | - |
|
RS Stock No.
661-2381
Mfr. Part No.INA126E/250
BrandTexas Instruments
|
HK$38.25
Each
units
|
Dual | MSOP | Surface Mount | 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 Stock No.
660-5389
Mfr. Part No.INA2141U
BrandTexas Instruments
|
HK$161.13
Each
units
|
Dual | SOIC | Surface Mount | - | 16 | ±15V | No | 0.1mV | -40 °C | +85 °C | 10GΩ | 97dB | - | 1.6 mA |
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