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INA121U/2K5

The Texas Instruments INA121U/2K5 is a FET-input, low power instrumentation amplifier offering high accuracy. It operates over a wide supply range and features low input offset and drift.

✓ Total Stock: 50,731 pcs

$ Price Range: $4.52

INA121U/2K5 Available from 3 distributors

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✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Unit Electronics Co.,Limited ✓ Non-Authorised Inventory information	49,175 pcs On Request	49175 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Xingangxin ✓ Non-Authorised Inventory information	1,556 pcs On Request	1556 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
HK XINYUANXIN ELECTRONIC TECH LIMITED ✓ Non-Authorised Inventory information	On Request On Request	On Request	On Request	1	On Request	On Request	On Request	On Request	On Request

INA121U/2K5 Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Texas Instruments
Bandwidth	0.6 MHz
Mounting Type	Surface Mount
Number of Channels	1
Operating Temperature Range	-40 to 85°C
SVHC Present	Not Present

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INA121U/2K5 Description

Short technical summary and product information.

The Texas Instruments INA121U/2K5 is a FET-input, low power instrumentation amplifier designed for high accuracy applications. It utilizes a versatile three-op-amp design and is available in SOIC and PDIP packages.

Key electrical specifications include a low input offset voltage of ±500µV, a high Common-Mode Rejection Ratio (CMRR) of 106 dB, and a wide supply voltage range from ±2.25V to ±18V. The amplifier offers a voltage gain range from 1 V/V to 10000 V/V, with a typical noise level of 20 nV/√Hz at 1 kHz.

This instrumentation amplifier is suitable for a variety of applications requiring precise signal conditioning. Its low quiescent current of 0.45 mA and low input bias current of ±0.05 nA make it power-efficient. The device also features input protection up to ±40V.

Available in SOIC and PDIP packages, the INA121U/2K5 is designed for surface mount or through-hole mounting. The operating temperature range is -40°C to 85°C.

INA121U/2K5 Quick Information

Product Type: Instrumentation Amplifier

Canonical Name: Texas Instruments INA121 FET-Input, Low Power Instrumentation Amplifier

Subcategory: Analog Multipliers, Dividers

INA121U/2K5 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

INA121U/2K5 Estimated Pricing

Qty	Low	High
1+	$4.52	$4.52

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

INA121U/2K5 Features

FET-input, low power instrumentation amplifier.
Low input offset voltage of ±500µV.
High CMRR of 106 dB.
Wide supply range from ±2.25V to ±18V.
Available in SOIC and PDIP packages.

INA121U/2K5 Applications

Precise signal amplification.
Low power instrumentation systems.
Differential signal conditioning.
Sensor signal measurement.

INA121U/2K5 FAQs

7 frequently asked questions generated from this part’s specifications.

What is the operating voltage range?

The supply voltage ranges from 4.5V to 36V single supply, or ±2.25V to ±18V dual supply.

What packages are available?

The INA121U/2K5 is available in SOIC-8 and PDIP-8 packages.

What is the operating temperature range?

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

What is the input offset voltage?

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

What is the typical quiescent current?

The typical quiescent current is 0.45 mA (450 µA).

What is the gain range?

The voltage gain can be set from 1 V/V to 10000 V/V using an external resistor.

What is the typical noise at 1 kHz?

The noise density at 1 kHz is 20 nV/√Hz typical.