AMP03GS Equivalent & Substitute Parts

Part Overview

The AMP03GS is a differential amplifier integrated circuit manufactured by Analog Devices Inc., housed in an 8-SOIC surface mount package. This component functions as a single-circuit differential operational amplifier with a -3dB bandwidth of 3 MHz and slew rate of 9.5V/µs. The AMP03GS is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. Active alternatives with compatible electrical and mechanical specifications are available from both Analog Devices Inc. and Texas Instruments.

Substiute Parts

AMP03GS

Analog Devices Inc.In Stock: 4861AMP03GS Datasheet

Current PartRFQ

AMP03GSZ

Analog Devices Inc.In Stock: 2742AMP03GSZ Datasheet

DirectRFQ

INA154U

Texas InstrumentsIn Stock: 65944INA154U Datasheet

DirectRFQ

INA154U/2K5

Texas InstrumentsIn Stock: 2741INA154U/2K5 Datasheet

DirectRFQ

INA105KU/2K5

Texas InstrumentsIn Stock: 2803INA105KU/2K5 Datasheet

SimilarRFQ

INA134UA

Texas InstrumentsIn Stock: 2013INA134UA Datasheet

SimilarRFQ

INA134UA/2K5

Texas InstrumentsIn Stock: 30218INA134UA/2K5 Datasheet

SimilarRFQ

INA154UA

Texas InstrumentsIn Stock: 2024INA154UA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AMP03GS are classified into two categories based on electrical parameter compatibility:

Direct Substitutes (Identical Electrical Performance)

Direct substitutes maintain all critical electrical parameters within the same tolerance bands as the AMP03GS. These parts are functionally interchangeable with no circuit redesign required. The primary differentiator is product status and packaging format.

Similar Substitutes (Compatible Electrical Performance)

Similar substitutes operate within the same functional envelope but exhibit variations in specific electrical parameters. These parts are suitable for applications where the parameter variations do not impact circuit performance. Key parameters determining substitution eligibility include:

• Amplifier Type: Differential
• Number of Circuits: 1
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C ~ 85°C
• Voltage Supply Span compatibility with application requirements

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: AMP03GSZ

The AMP03GSZ is the direct equivalent to the AMP03GS, manufactured by Analog Devices Inc. This part maintains identical electrical specifications including slew rate (9.5V/µs), bandwidth (3 MHz), input offset voltage (25 µV), and supply current (2.5mA). The AMP03GSZ is classified as Active, ensuring long-term availability and supply chain continuity. This part is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The primary difference is packaging format (Tube versus unspecified for the original part). Selection of AMP03GSZ eliminates obsolescence risk while maintaining full electrical compatibility.

Secondary Recommendation: INA154U or INA154U/2K5 or INA154UA

The INA154 series from Texas Instruments provides compatible differential amplifier functionality with enhanced electrical performance. These parts feature higher slew rate (14V/µs versus 9.5V/µs) and marginally higher bandwidth (3.1 MHz versus 3 MHz). Input offset voltage is higher at 100 µV compared to 25 µV in the AMP03GS, and output current capability is increased to 60 mA versus 45 mA. Minimum supply voltage is reduced to 8 V, providing greater flexibility in low-voltage applications. All INA154 variants are Active products with ROHS3 compliance. Selection of INA154 variants is appropriate for applications where the enhanced performance parameters provide system benefits.

Alternative Consideration: INA105KU/2K5

The INA105KU/2K5 operates within the same package and temperature range but exhibits reduced performance specifications. Slew rate is 3V/µs, bandwidth is 1 MHz, and output current is limited to 20 mA. This part is suitable only for applications with relaxed bandwidth and slew rate requirements. The INA105KU/2K5 is Active and ROHS3 compliant.

Not Recommended: INA134UA and INA134UA/2K5

The INA134 series is classified as a Differential Receiver with audio applications focus. While mechanically compatible, detailed electrical specifications are not provided in the available data, limiting engineering confidence in substitution. The INA134UA is classified as Last Time Buy, indicating limited future availability. The INA134UA/2K5 is Active but represents a different functional category.

Frequently Asked Questions (FAQ)

Q: Can the AMP03GSZ be used as a direct replacement for the AMP03GS without circuit modification?

A: Yes. The AMP03GSZ maintains identical electrical specifications across all critical parameters: slew rate, bandwidth, input offset voltage, supply current, output current, and supply voltage range. The 8-SOIC package and surface mount configuration are identical. No circuit redesign is required.

Q: What is the primary reason to transition from AMP03GS to an alternative part?

A: The AMP03GS is classified as obsolete. Continued reliance on this part creates supply chain risk and potential production interruption. Transition to an active product such as AMP03GSZ or INA154 variants ensures long-term component availability and manufacturing support.

Q: Are the INA154 variants electrically compatible with the AMP03GS?

A: The INA154 variants are functionally compatible but exhibit performance enhancements. Slew rate is increased from 9.5V/µs to 14V/µs, and output current capability increases from 45 mA to 60 mA. Input offset voltage is higher at 100 µV versus 25 µV. These differences are acceptable in most applications but should be verified against specific circuit requirements. Minimum supply voltage is reduced to 8 V, providing additional design flexibility.

Q: What is the significance of the MSL (Moisture Sensitivity Level) difference between AMP03GS and substitute parts?

A: The AMP03GS has MSL 1 (Unlimited), indicating no moisture sensitivity constraints during storage and handling. Most substitute parts have MSL 3 (168 Hours), requiring controlled storage conditions and limiting shelf life after package opening. Manufacturing and assembly processes must account for this requirement through proper moisture control and bake-out procedures if necessary.

Q: Can the INA105KU/2K5 be used in place of the AMP03GS?

A: The INA105KU/2K5 is mechanically compatible but exhibits significantly reduced electrical performance. Bandwidth is reduced to 1 MHz (versus 3 MHz), slew rate is 3V/µs (versus 9.5V/µs), and output current is limited to 20 mA (versus 45 mA). This part is suitable only for applications with relaxed performance requirements. Verification against specific circuit bandwidth and slew rate requirements is necessary before selection.

Q: What packaging options are available for substitute parts?

A: The AMP03GSZ is available in Tube packaging. The INA154U and INA154UA are available in Tube packaging. The INA154U/2K5 and INA105KU/2K5 are available in Cut Tape (CT) & Digi-Reel® packaging. The INA134UA is available in Tube packaging, and INA134UA/2K5 is available in Cut Tape (CT) & Digi-Reel® packaging. Selection of packaging format depends on manufacturing process requirements and inventory management practices.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed are ROHS3 compliant. The original AMP03GS does not specify RoHS status. Transition to substitute parts ensures compliance with current environmental and regulatory requirements.

Q: What is the difference between INA154U and INA154U/2K5?

A: Both parts are electrically identical. The primary difference is packaging format. INA154U is supplied in Tube packaging, while INA154U/2K5 is supplied in Cut Tape (CT) & Digi-Reel® packaging. Selection depends on manufacturing equipment compatibility and inventory management requirements.