INA111AUG4 Equivalent & Substitute Parts

Part Overview

The INA111AUG4 is a single-circuit instrumentation amplifier manufactured by Texas Instruments in a 16-SOIC surface mount package. This device is classified as discontinued at DiGi Electronics, which necessitates identification of equivalent substitute components for ongoing design support and procurement requirements. The INA111AUG4 delivers precision signal conditioning with a slew rate of 17V/µs, 2 MHz bandwidth, and operates across a 12V to 36V supply range, making it suitable for precision measurement and data acquisition applications.

Substiute Parts

INA111AUG4

Texas InstrumentsIn Stock: 986INA111AUG4 Datasheet

Current PartRFQ

INA111AU

Texas InstrumentsIn Stock: 1662INA111AU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the INA111AUG4 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Amplifier Type: Instrumentation
• Number of Circuits: 1
• Slew Rate: 17V/µs
• -3dB Bandwidth: 2 MHz
• Current - Input Bias: 2 pA
• Voltage - Input Offset: 200 µV
• Current - Supply: 3.3 mA
• Current - Output / Channel: 30 mA
• Voltage - Supply Span: 12V to 36V
• Operating Temperature Range: -40°C ~ 85°C

Mechanical Equivalence Criteria:

• Package / Case: 16-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount
• Supplier Device Package: 16-SOIC

Compliance Equivalence Criteria:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 3 (168 Hours)

The INA111AU is identified as the manufacturer-recommended substitute. This part maintains identical electrical specifications, mechanical packaging, and compliance certifications while offering active product status.

Parameter Comparison

Engineering Selection Recommendations

The INA111AU is the direct equivalent substitute for the INA111AUG4. Both components are manufactured by Texas Instruments and share identical electrical performance specifications, mechanical packaging, and regulatory compliance certifications. The primary distinction is product status: the INA111AUG4 is discontinued at DiGi Electronics, while the INA111AU maintains active status, ensuring ongoing availability for procurement and supply chain continuity.

For applications currently utilizing the INA111AUG4, direct substitution with the INA111AU is supported without circuit redesign or layout modification. Both parts conform to ROHS3 compliance requirements and maintain equivalent moisture sensitivity classifications, ensuring compatibility with existing manufacturing and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the INA111AU be used as a direct replacement for the INA111AUG4 in existing designs?

A: Yes. The INA111AU is electrically and mechanically equivalent to the INA111AUG4. All electrical parameters, including slew rate, bandwidth, input bias current, input offset voltage, supply current, output current, supply voltage range, and operating temperature range are identical. The 16-SOIC package and surface mount configuration are unchanged. No circuit redesign or PCB layout modification is required.

Q: What is the difference between INA111AUG4 and INA111AU?

A: The INA111AUG4 and INA111AU are functionally identical instrumentation amplifiers with the same electrical specifications and 16-SOIC packaging. The primary difference is product status: the INA111AUG4 is discontinued at DiGi Electronics, while the INA111AU is actively manufactured and distributed. The suffix designation may reflect different manufacturing dates or distribution channels, but electrical and mechanical specifications remain unchanged.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the INA111AUG4 and INA111AU are ROHS3 compliant and carry identical Moisture Sensitivity Level (MSL) ratings of 3 (168 Hours). Both parts are REACH unaffected and classified under ECCN EAR99. Compliance certifications and regulatory status are equivalent.

Q: What is the package compatibility between INA111AUG4 and INA111AU?

A: Both parts use the 16-SOIC (0.295", 7.50mm Width) surface mount package. Pin configuration, lead spacing, and mechanical dimensions are identical. PCB footprints designed for the INA111AUG4 are directly compatible with the INA111AU without modification.

Q: Is the INA111AU available in inventory?

A: The INA111AU is actively manufactured by Texas Instruments and maintains active product status. Availability should be confirmed with authorized distributors. The INA111AUG4, being discontinued at DiGi Electronics, has limited remaining inventory and should be replaced with the INA111AU for new designs and ongoing procurement.