INA134PA Equivalent & Substitute Parts

Part Overview

The INA134PA is a Class AB Mono differential receiver IC manufactured by Texas Instruments, designed for audio applications. This through-hole 8-DIP component operates as a differential receiver with audio-grade performance characteristics. The product is currently in Last Time Buy status, indicating discontinued production. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications requiring differential audio signal reception.

Substiute Parts

INA134PA

Texas InstrumentsIn Stock: 4296INA134PA Datasheet

Current PartRFQ

INA134UA/2K5

Texas InstrumentsIn Stock: 30218INA134UA/2K5 Datasheet

MFR RecommendedRFQ

AD629ANZ

Analog Devices Inc.In Stock: 1869AD629ANZ Datasheet

MFR RecommendedRFQ

AD629BNZ

Analog Devices Inc.In Stock: 1421AD629BNZ Datasheet

MFR RecommendedRFQ

AMP03GPZ

Analog Devices Inc.In Stock: 1399AMP03GPZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the INA134PA is determined by the following critical parameters:

Functional Compatibility: All substitute parts must operate as differential receiver or differential amplifier circuits suitable for audio signal processing.

Package Compatibility: The INA134PA uses 8-DIP through-hole packaging. Substitutes maintaining identical 8-DIP (0.300", 7.62mm) through-hole configuration preserve PCB layout compatibility without redesign.

Mounting Type: Through-hole mounting is the primary constraint. Surface-mount alternatives (such as 8-SOIC packages) require PCB redesign and are not direct substitutes for through-hole applications.

Regulatory Compliance: All substitute parts must maintain ROHS3 compliance and REACH unaffected status to satisfy environmental and regulatory requirements.

Base Product Lineage: Substitutes sharing the same base product number (INA134 or functionally equivalent differential receiver architectures) provide the highest compatibility assurance.

The substitute parts are grouped into two categories:

Category 1 - Same Manufacturer, Same Package (INA134UA/2K5): Texas Instruments INA134 series in surface-mount 8-SOIC format. This part shares the same base product number but requires PCB redesign due to different mounting type.

Category 2 - Alternate Manufacturers, Same Package (AD629ANZ, AD629BNZ, AMP03GPZ): Analog Devices differential receiver and current sense amplifier ICs in 8-DIP through-hole packaging. These maintain package compatibility with the original INA134PA.

Parameter Comparison

Engineering Selection Recommendations

For Direct Through-Hole PCB Replacement (No Redesign):

Select from AD629ANZ, AD629BNZ, or AMP03GPZ. All three parts maintain the 8-DIP through-hole package format identical to the INA134PA, enabling direct socket substitution without PCB layout modification. All three parts are in Active product status with established supply availability, providing long-term sourcing reliability compared to the Last Time Buy status of the original INA134PA.

For Surface-Mount Design Transition:

The INA134UA/2K5 represents the Texas Instruments INA134 series evolution to surface-mount 8-SOIC packaging. This part is manufactured by the original equipment supplier and maintains the same base product number. Selection of this part requires PCB redesign to accommodate 8-SOIC footprint but provides continuity with Texas Instruments product lineage and Active product status.

Compliance Assurance:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements equivalent to the original INA134PA. No additional compliance verification is required for environmental or hazardous substance restrictions.

Supply Chain Continuity:

The INA134PA is designated Last Time Buy, indicating production discontinuation. Substitute parts in Active status (INA134UA/2K5, AD629ANZ, AD629BNZ, AMP03GPZ) provide assured long-term availability and supply chain stability for new production runs and design refreshes.

Frequently Asked Questions (FAQ)

Q: Can the INA134UA/2K5 be used as a direct replacement for the INA134PA without PCB modification?

A: No. The INA134UA/2K5 uses 8-SOIC surface-mount packaging, while the INA134PA uses 8-DIP through-hole packaging. Direct socket substitution is not possible. PCB redesign is required to accommodate the different footprint and mounting method.

Q: Which substitute parts maintain identical through-hole package compatibility with the INA134PA?

A: AD629ANZ, AD629BNZ, and AMP03GPZ all use 8-DIP (0.300", 7.62mm) through-hole packaging identical to the INA134PA. These parts enable direct socket replacement without PCB layout changes.

Q: What is the primary difference between AD629ANZ and AD629BNZ?

A: Both parts are current sense amplifiers in 8-DIP through-hole packaging with identical supply voltage ranges (5V to 36V), slew rate (2.1V/µs), and bandwidth (500 kHz). The primary difference is voltage input offset: AD629ANZ specifies 200 µV, while AD629BNZ specifies 100 µV. AD629BNZ provides tighter input offset tolerance.

Q: How does the AMP03GPZ differ functionally from the AD629 series?

A: The AMP03GPZ is classified as a differential amplifier rather than a current sense amplifier. It provides higher performance specifications: 9.5V/µs slew rate (versus 2.1V/µs for AD629 series), 3 MHz bandwidth (versus 500 kHz), and 25 µV input offset (versus 100-200 µV). However, AMP03GPZ requires minimum 12V supply voltage, while AD629 series operates from 5V minimum.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. INA134UA/2K5, AD629ANZ, AD629BNZ, and AMP03GPZ are all ROHS3 compliant and REACH unaffected, matching the environmental compliance status of the original INA134PA.

Q: What is the inventory status of substitute parts?

A: INA134UA/2K5 has 30,200 pieces in stock. AD629ANZ has 1,828 pieces in stock. AD629BNZ has 1,401 pieces in stock. AMP03GPZ has 1,317 pieces in stock. All parts are available as new original components.

Q: Why is the INA134PA designated Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of the INA134PA. This designation signals the final opportunity to purchase existing inventory before the part becomes obsolete. Designers should transition to active substitute parts to ensure long-term supply chain continuity.

Q: Can I use multiple substitute parts interchangeably in the same application?

A: Interchangeability depends on specific application requirements. All three through-hole substitutes (AD629ANZ, AD629BNZ, AMP03GPZ) share the same 8-DIP package and through-hole mounting compatibility. However, differences in slew rate, bandwidth, input offset, and supply voltage requirements must be evaluated against your circuit design specifications before selecting any single substitute.