OPA197IDR Equivalent & Substitute Parts

Part Overview

The OPA197IDR is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface-mount package. This rail-to-rail amplifier is designed for applications requiring low input bias current and low input offset voltage across a wide supply voltage range. The device is currently in active production status with 27,900 units in stock.

Substitute parts are identified when design requirements necessitate alternative amplifier topologies, enhanced performance characteristics, or different packaging configurations while maintaining compatibility with the 8-SOIC footprint and core application parameters.

Substiute Parts

OPA197IDR

Texas InstrumentsIn Stock: 27997OPA197IDR Datasheet

Current PartRFQ

AD627ARZ-R7

Analog Devices Inc.In Stock: 40187AD627ARZ-R7 Datasheet

MFR RecommendedRFQ

ADA4622-1BRZ

Analog Devices Inc.In Stock: 2330ADA4622-1BRZ Datasheet

MFR RecommendedRFQ

ADA4622-1BRZ-RL

Analog Devices Inc.In Stock: 3545ADA4622-1BRZ-RL Datasheet

MFR RecommendedRFQ

ISL28110FBZ

Renesas Electronics CorporationIn Stock: 3926ISL28110FBZ Datasheet

MFR RecommendedRFQ

ISL28110FBZ-T7A

Renesas Electronics CorporationIn Stock: 988ISL28110FBZ-T7A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPA197IDR is determined by the following critical parameters:

Mechanical Compatibility: All substitute parts maintain the 8-SOIC (0.154", 3.90mm Width) surface-mount package, ensuring direct footprint compatibility on printed circuit boards.

Electrical Compatibility: Substitute parts operate within the OPA197IDR's supply voltage range (minimum 4.5 V to maximum 36 V) and maintain rail-to-rail output capability. All substitutes are single-circuit amplifiers with operating temperature ranges that encompass or match the -40°C to 125°C specification.

Functional Topology: The OPA197IDR is a general-purpose amplifier. Substitutes include instrumentation amplifiers and J-FET amplifiers, which provide alternative input impedance characteristics and noise performance while maintaining functional compatibility in applications where the amplifier topology is not a critical design constraint.

Compliance & Status: All substitute parts are active products with ROHS3 compliance and REACH unaffected status, matching the regulatory profile of the main part.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: ISL28110FBZ and ISL28110FBZ-T7A

The ISL28110 series from Renesas Electronics Corporation provides the closest electrical performance match to the OPA197IDR. Both variants maintain identical electrical specifications with slew rate of 20 V/µs and gain bandwidth product of 12.5 MHz. The ISL28110FBZ is supplied in tube packaging, while ISL28110FBZ-T7A is supplied in tape and reel format. Both operate across the full -40°C to 125°C temperature range and are ROHS3 compliant. The minimum supply voltage requirement of 9 V represents a constraint for applications requiring operation below this threshold.

Secondary Substitute: ADA4622-1BRZ and ADA4622-1BRZ-RL

The ADA4622-1 J-FET amplifier from Analog Devices Inc. offers superior slew rate performance at 23 V/µs and maintains the full -40°C to 125°C operating temperature range. The ADA4622-1BRZ is supplied in tube packaging, while ADA4622-1BRZ-RL is supplied in tape and reel format. The maximum supply voltage is limited to 30 V, which constrains applications requiring the full 36 V capability of the OPA197IDR.

Alternative Substitute: AD627ARZ-R7

The AD627ARZ-R7 instrumentation amplifier from Analog Devices Inc. provides the lowest supply current at 60 µA and operates with a minimum supply voltage of 2.2 V. This part is suitable for low-power applications. The operating temperature range is limited to -40°C to 85°C, which excludes high-temperature applications. The slew rate of 0.06 V/µs is significantly lower than the OPA197IDR, restricting use in high-speed signal processing applications.

Packaging Considerations

Cut tape and digi-reel packaging (OPA197IDR) is suitable for lower-volume production and prototyping. Tube packaging (ISL28110FBZ, ADA4622-1BRZ, AD627ARZ-R7) is standard for component handling. Tape and reel packaging (ISL28110FBZ-T7A, ADA4622-1BRZ-RL) is optimized for high-volume automated assembly.

Frequently Asked Questions (FAQ)

Q: Can the AD627ARZ-R7 replace the OPA197IDR in all applications?

A: The AD627ARZ-R7 is functionally compatible from a package and pinout perspective. However, the operating temperature range is limited to -40°C to 85°C, excluding applications requiring operation at temperatures above 85°C. The slew rate of 0.06 V/µs is substantially lower than the OPA197IDR's 20 V/µs, making it unsuitable for high-speed signal processing. The minimum supply voltage of 2.2 V provides broader low-voltage compatibility.

Q: What is the primary difference between ISL28110FBZ and ISL28110FBZ-T7A?

A: Both parts are electrically identical with matching specifications. The ISL28110FBZ is supplied in tube packaging, while ISL28110FBZ-T7A is supplied in tape and reel format. Selection depends on production volume and assembly equipment compatibility. Tape and reel packaging is standard for automated pick-and-place assembly in high-volume manufacturing.

Q: Are ADA4622-1BRZ and ADA4622-1BRZ-RL interchangeable?

A: Both parts are electrically identical. The ADA4622-1BRZ is supplied in tube packaging, while ADA4622-1BRZ-RL is supplied in tape and reel format. Packaging selection is determined by production methodology and volume requirements.

Q: What supply voltage constraints apply to substitute parts?

A: The OPA197IDR operates from 4.5 V to 36 V. The AD627ARZ-R7 operates from 2.2 V to 36 V, providing broader low-voltage capability. The ADA4622-1 series operates from 5 V to 30 V, limiting maximum supply voltage to 30 V. The ISL28110 series operates from 9 V to 40 V, requiring a minimum of 9 V and supporting higher maximum voltage.

Q: Which substitute part offers the lowest power consumption?

A: The AD627ARZ-R7 has the lowest supply current at 60 µA, compared to the OPA197IDR's 1 mA. This makes the AD627ARZ-R7 suitable for battery-powered and low-power applications where temperature range and slew rate constraints are acceptable.

Q: Can substitute parts be mixed within a single design?

A: All substitute parts maintain the 8-SOIC footprint and are pin-compatible with the OPA197IDR. However, electrical performance differences require circuit-level evaluation. Mixing different amplifier types (general purpose, instrumentation, J-FET) within a single design is permissible only when application requirements for each stage are independently verified against the selected part's specifications.

Q: What is the significance of the J-FET topology in ADA4622-1 and ISL28110 parts?

A: J-FET input stages provide extremely low input bias current (2 pA) compared to the OPA197IDR's 5 pA. This topology is advantageous for high-impedance signal sources and transimpedance amplifier applications. J-FET amplifiers typically exhibit higher input offset voltage, as demonstrated by the ADA4622-1's 400 µV specification.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the regulatory compliance profile of the OPA197IDR.