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INA149AIDR

The Texas Instruments INA149AIDR is a precision unity-gain difference amplifier designed for high common-mode voltage applications. It accurately measures small differential voltages in the presence of common-mode signals up to ±275 V.

✓ Total Stock: 6,602 pcs

$ Price Range: $3.56

INA149AIDR Available from 4 distributors

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Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Smaxon Electronics ✓ Non-Authorised Inventory information	5,000 pcs On Request	5000 pcs	On Request	1	On Request	On Request	21+	On Request	On Request
Optech Co.,Limited ✓ Non-Authorised Inventory information	1,236 pcs On Request	1236 pcs	On Request	1	On Request	On Request	24+	On Request	On Request
Xingangxin ✓ Non-Authorised Inventory information	364 pcs On Request	364 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Hybrid Electronics ✓ Non-Authorised Inventory information	2 pcs On Request	2 pcs	On Request	1	On Request	On Request	NO DC	On Request	On Request

INA149AIDR Specifications Quick View

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Category	New Products
Manufacturer Name	Texas Instruments

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INA149AIDR Description

Short technical summary and product information.

The Texas Instruments INA149AIDR is a high-performance, unity-gain difference amplifier. It is engineered to accurately measure small differential voltages even when subjected to very high common-mode signals, up to ±275 V. This monolithic device integrates a precision operational amplifier with a thin-film resistor network, providing excellent accuracy and stability.

Key electrical specifications include a minimum Common-Mode Rejection Ratio (CMRR) of 90 dB and a small-signal bandwidth of 500 kHz. The amplifier operates over a wide supply voltage range of ±2.0 V to ±18 V, with a maximum quiescent current of 900 µA. The input offset voltage is a maximum of 1100 µV, and the gain error is a maximum of 0.02%.

Designed for robustness, the INA149AIDR features input protection against momentary common-mode or differential overloads of up to ±500 V. It is available in an 8-pin SOIC package, suitable for surface mounting. The operating temperature range is -40°C to 125°C, making it suitable for various industrial and commercial applications requiring precise differential voltage measurement in challenging environments.

INA149AIDR Quick Information

Product Type: Difference Amplifier

Series: INA149

Canonical Name: INA149 High Common Mode Voltage Difference Amplifier

Subcategory: High Common Mode Voltage Difference Amplifier

INA149AIDR Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

INA149AIDR Estimated Pricing

Qty	Low	High
1+	$3.56	$3.56

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

INA149AIDR Features

High common-mode voltage range up to ±275 V.
Minimum CMRR of 90 dB.
500 kHz small-signal bandwidth.
Wide supply voltage range ±2.0 V to ±18 V.
±500 V input protection.

INA149AIDR Applications

Measures small differential voltages accurately.
Suitable for high common-mode signal environments.
Robust input protection for overloads.
Wide operating temperature range.

INA149AIDR FAQs

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

What is the supply voltage range for the INA149AIDR?

The INA149AIDR operates from a single supply of 4V to 36V or dual supplies of ±2V to ±18V.

What is the common-mode input voltage range of the INA149AIDR?

The common-mode input voltage range is ±275V.

What is the operating temperature range of the INA149AIDR?

The operating temperature range is -40°C to 125°C.

What package does the INA149AIDR come in?

The INA149AIDR is available in an SOIC-8 package with a footprint of 29.4mm².

What is the bandwidth of the INA149AIDR?

The small-signal bandwidth is typically 500kHz.

Does the INA149AIDR have input overvoltage protection?

Yes, the INA149AIDR features ±500V input protection for both common-mode and differential signals.