INA115BUG4 Equivalent & Substitute Parts

Part Overview

The INA115BUG4 is a single-channel instrumentation amplifier manufactured by Texas Instruments in a 16-SOIC surface mount package. This device is classified as obsolete product status. The INA115BUG4 provides precision signal conditioning with a slew rate of 0.6V/µs, 1 MHz bandwidth, and operates across a wide supply voltage range of 4.5V to 36V. Due to its obsolete status, identifying equivalent active alternatives is essential for design continuity and procurement reliability.

Substiute Parts

INA115BUG4

Texas InstrumentsIn Stock: 1032INA115BUG4 Datasheet

Current PartRFQ

INA115BU

Texas InstrumentsIn Stock: 2601INA115BU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the INA115BUG4 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must match the following criteria:

Electrical Parameters (Must Match Exactly):

• Amplifier Type: Instrumentation
• Number of Circuits: 1
• Slew Rate: 0.6V/µs
• -3dB Bandwidth: 1 MHz
• Current - Input Bias: 500 pA
• Voltage - Input Offset: 10 µV
• Current - Supply: 2.2mA
• Current - Output / Channel: 20 mA
• Voltage - Supply Span: 4.5V to 36V
• Operating Temperature Range: -40°C ~ 85°C

Mechanical Parameters (Must Match Exactly):

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

Compliance Parameters:

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

The INA115BU meets all substitution criteria and is the manufacturer-recommended equivalent.

Parameter Comparison

Engineering Selection Recommendations

The INA115BU is the direct substitute for the obsolete INA115BUG4. Both parts are manufactured by Texas Instruments and share identical electrical specifications, mechanical packaging, and compliance certifications. The primary distinction is product status: the INA115BUG4 is obsolete, while the INA115BU maintains active status with manufacturer support and ongoing availability.

Selection of the INA115BU eliminates obsolescence risk and ensures access to current manufacturing batches. Both parts comply with ROHS3 requirements and maintain equivalent moisture sensitivity ratings. The identical 16-SOIC package and surface mount configuration ensure direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the INA115BU directly replace the INA115BUG4 on existing PCBs?

A: Yes. The INA115BU is a direct pin-for-pin and functional equivalent. Both devices use the 16-SOIC package with identical pinout, electrical performance, and operating characteristics. No PCB modifications are required.

Q: What is the primary reason to substitute the INA115BUG4?

A: The INA115BUG4 is classified as obsolete product status. The INA115BU is the active equivalent, ensuring long-term availability, manufacturer support, and procurement reliability.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts share identical electrical specifications including slew rate (0.6V/µs), bandwidth (1 MHz), input bias current (500 pA), input offset voltage (10 µV), supply current (2.2mA), and output current capability (20 mA per channel).

Q: Do both parts support the same supply voltage range?

A: Yes. Both the INA115BUG4 and INA115BU operate across 4.5V to 36V supply span, enabling use in single-supply and dual-supply configurations.

Q: Are packaging and moisture sensitivity identical?

A: Yes. Both parts are supplied in 16-SOIC surface mount packages with MSL rating of 3 (168 Hours). Handling and storage requirements are equivalent.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant and REACH unaffected. Regulatory and environmental requirements are satisfied by either part.