INA121U The Texas Instruments INA121U is a FET-input, low power instrumentation amplifier offering high accuracy. It features a wide supply range and low input offset voltage.
Mfr Part #:

INA121U

Available from 3 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments INA121U is a FET-input, low power instrumentation amplifier offering high accuracy. It features a wide supply range and low input offset voltage.
✓ Total Stock: 48,517 pcs
$ Price Range: $5.16

INA121U Available from 3 distributors

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✓ Non-Authorised

INA121U Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Industrial Grade
SVHC Present

INA121U Description

Short technical summary and product information.

The Texas Instruments INA121U is a FET-input, low power instrumentation amplifier designed for high accuracy applications. It operates over a wide supply voltage range from ±4.5V to ±18V, with a typical quiescent current of 0.45mA.

 

Key electrical specifications include a low input offset voltage of ±500µV maximum, a low input bias current of ±0.05nA maximum, and a high Common-Mode Rejection Ratio (CMRR) of 106dB minimum. The amplifier offers a voltage gain range from 1 to 10000 V/V and a bandwidth of 0.6MHz at minimum gain.

 

For enhanced reliability, the INA121U includes overvoltage protection up to ±40V. It is available in SOIC and PDIP packages, suitable for various mounting requirements.

 

This instrumentation amplifier is well-suited for applications requiring precise signal conditioning and amplification due to its combination of low noise, low offset, and high CMRR.

INA121U Quick Information

Product Type: Instrumentation Amplifier
Series: INA121
Canonical Name: INA121U FET-Input, Low Power Instrumentation Amplifier
Subcategory: Instrumentation Amplifiers

INA121U Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

INA121U Estimated Pricing

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1+ $5.16 $5.16

Estimated market price range - modelled values for guidance only, not live distributor offers.

INA121U Features

  • FET-input, low power instrumentation amplifier.
  • Low input offset voltage: ±500µV maximum.
  • High Common-Mode Rejection Ratio: 106dB minimum.
  • Wide supply voltage range: ±4.5V to ±18V.
  • Input protection to ±40V.

INA121U Applications

  • Suitable for precision measurement.
  • Ideal for signal conditioning.
  • Used in low-power circuits.
  • Applications requiring high accuracy.

INA121U FAQs

6 frequently asked questions generated from this part’s specifications.
What is the supply voltage range for the INA121U?

The INA121U operates from a single supply of 4.5V to 36V or a dual supply of ±2.25V to ±18V.

What packages are available for the INA121U?

The INA121U is available in SOIC (D) and PDIP (P) packages.

What is the operating temperature range of the INA121U?

The operating temperature range is -40°C to 85°C.

What is the bandwidth of the INA121U?

The bandwidth at minimum gain is 0.6 MHz.

What is the quiescent current of the INA121U?

The typical quiescent current is 0.45 mA.

What is the input offset voltage of the INA121U?

The maximum input offset voltage is ±500 µV, with a typical value of ±200 µV.

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