INA190A5IRSWT Current Sense Amplifier Equivalent & Substitute Parts

Part Overview

The INA190A5IRSWT is a zero-drift current sense amplifier manufactured by Texas Instruments, designed for single-circuit rail-to-rail current sensing applications. This device is classified as Obsolete, which necessitates identification of active equivalent parts for ongoing production and procurement requirements. The INA190A5IRSWT operates across a 1.7V to 5.5V supply range and is packaged in a 10-UQFN (1.8x1.4mm) surface mount configuration. Due to its obsolete status, sourcing active alternatives with identical electrical and mechanical specifications is critical for design continuity and supply chain management.

Substiute Parts

INA190A5IRSWT

Texas InstrumentsIn Stock: 758INA190A5IRSWT Datasheet

Current PartRFQ

INA190A5IRSWR

Texas InstrumentsIn Stock: 4201INA190A5IRSWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the INA190A5IRSWT is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Amplifier type (Current Sense)
• Number of circuits (1)
• Output type (Rail-to-Rail)
• Slew rate (0.25V/µs)
• Gain bandwidth product (27 kHz)
• Input bias current (500 pA)
• Input offset voltage (2 µV)
• Supply current (40µA)
• Supply voltage range (1.7V to 5.5V)
• Operating temperature range (-40°C to 125°C)

Mechanical Equivalence Criteria:

• Package type (10-UQFN)
• Package dimensions (1.8x1.4mm)
• Mounting type (Surface Mount)
• Base product number (INA190)

The INA190A5IRSWR is identified as the manufacturer-recommended substitute. This part maintains identical electrical performance specifications and mechanical compatibility while offering active product status and improved inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The INA190A5IRSWR is the direct equivalent substitute for the obsolete INA190A5IRSWT. Selection of this substitute is based on the following engineering factors:

Product Status: The INA190A5IRSWR maintains Active product status, ensuring long-term availability and continued manufacturer support. The INA190A5IRSWT is classified as Obsolete, making it unsuitable for new designs or ongoing production.

Electrical Compatibility: All critical electrical parameters are identical between the main part and substitute, including supply voltage range, operating temperature range, slew rate, gain bandwidth product, input bias current, and input offset voltage. The -3dB bandwidth of the substitute (27 kHz) exceeds the main part specification (20 kHz), providing enhanced performance margin.

Mechanical Compatibility: Both parts utilize identical 10-UQFN (1.8x1.4mm) surface mount packaging, ensuring direct PCB layout compatibility without redesign requirements.

Regulatory Compliance: Both parts maintain ROHS3 compliance, REACH Unaffected status, and identical moisture sensitivity levels, satisfying regulatory and environmental requirements.

Supply Chain Availability: The INA190A5IRSWR offers significantly higher inventory availability (4100 pieces in stock versus 747 pieces for the obsolete variant), supporting production continuity and reducing procurement risk.

Frequently Asked Questions (FAQ)

Q: Can the INA190A5IRSWR be used as a direct replacement for the INA190A5IRSWT in existing designs?

A: Yes. The INA190A5IRSWR is electrically and mechanically equivalent to the INA190A5IRSWT. All critical parameters including supply voltage range, operating temperature, slew rate, gain bandwidth product, and input characteristics are identical. The package footprint is identical, requiring no PCB modifications.

Q: What is the difference in -3dB bandwidth between these parts?

A: The INA190A5IRSWT specifies a -3dB bandwidth of 20 kHz, while the INA190A5IRSWR specifies 27 kHz. This difference represents improved frequency response in the substitute part. Both parts maintain the same 27 kHz gain bandwidth product specification. The higher -3dB bandwidth of the substitute provides enhanced performance margin and does not create compatibility issues in applications designed for the original part.

Q: Why is the INA190A5IRSWT classified as Obsolete?

A: Product obsolescence is determined by the manufacturer based on market demand, production economics, and product lifecycle management. The INA190A5IRSWR represents the active continuation of this product line with identical functionality.

Q: Are there any supply voltage or temperature range differences?

A: No. Both parts operate across identical supply voltage ranges (1.7V to 5.5V) and temperature ranges (-40°C to 125°C). They are fully compatible in all operating conditions.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the INA190A5IRSWT and INA190A5IRSWR are ROHS3 compliant, REACH Unaffected, and carry identical moisture sensitivity levels (MSL 1 - Unlimited). They satisfy identical regulatory requirements.

Q: Is the 10-UQFN package footprint identical between both parts?

A: Yes. Both parts use the 10-UQFN (1.8x1.4mm) surface mount package with identical pinout and footprint dimensions. No PCB layout modifications are required for substitution.

Q: What is the input bias current specification for these parts?

A: Both parts specify an input bias current of 500 pA, ensuring identical input impedance characteristics and circuit behavior.

Q: Are the input offset voltage specifications identical?

A: Yes. Both parts specify an input offset voltage of 2 µV, providing identical zero-drift performance and measurement accuracy.