LM301AN/NOPB Equivalent & Substitute Parts

Part Overview

The LM301AN/NOPB is a general-purpose operational amplifier manufactured by Texas Instruments in an 8-DIP through-hole package. This device is classified as obsolete, making substitute parts necessary for new designs and production continuity. The LM301AN/NOPB operates across a supply voltage range of 10V to 36V and is suitable for applications requiring basic amplification functionality with moderate performance specifications.

Substiute Parts

LM301AN/NOPB

Texas InstrumentsIn Stock: 4213LM301AN/NOPB Datasheet

Current PartRFQ

AD797ANZ

Analog Devices Inc.In Stock: 2472AD797ANZ Datasheet

MFR RecommendedRFQ

TL031CP

Texas InstrumentsIn Stock: 2077TL031CP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM301AN/NOPB are selected based on strict compatibility criteria within the operational amplifier category. The primary substitution parameters are:

Package Compatibility: All substitute parts must use the 8-DIP (0.300", 7.62mm) through-hole package to ensure direct board-level compatibility without layout modifications.

Supply Voltage Range: Substitute parts must support the minimum 10V supply requirement. The LM301AN/NOPB operates up to 36V; substitutes with lower maximum supply ratings (30V) remain compatible for applications within their specified range.

Circuit Count: All substitute parts contain a single amplifier circuit, matching the LM301AN/NOPB configuration.

Mounting Technology: Through-hole mounting is maintained across all substitute options for compatibility with existing PCB designs.

Regulatory Compliance: All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring environmental and regulatory alignment.

The two substitute parts differ in amplifier topology and performance characteristics but satisfy the core mechanical and electrical compatibility requirements for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

AD797ANZ Substitution: The AD797ANZ is an active general-purpose operational amplifier from Analog Devices Inc. with enhanced performance characteristics. This substitute provides higher slew rate (20V/µs versus 0.5V/µs), significantly higher gain bandwidth product (110MHz versus 1MHz), and lower input offset voltage (25µV versus 2mV). The AD797ANZ operates within the 10V minimum supply requirement but has a 30V maximum rating, which is lower than the LM301AN/NOPB. This substitute is suitable for applications where the 30V maximum supply is acceptable and where improved dynamic performance is beneficial. The AD797ANZ maintains ROHS3 compliance and active product status.

TL031CP Substitution: The TL031CP is an active J-FET operational amplifier from Texas Instruments. This substitute features extremely low input bias current (2pA versus 70nA), which is advantageous for high-impedance input applications. The TL031CP has a slew rate of 5.1V/µs and gain bandwidth product of 1.1MHz, both closer to the LM301AN/NOPB specifications than the AD797ANZ. The TL031CP operates within the 10V to 30V supply range and maintains ROHS3 compliance. This substitute is suitable for applications requiring minimal input bias current and operating within the 30V maximum supply constraint.

Both substitutes maintain through-hole 8-DIP packaging, enabling direct board-level replacement without layout modifications. Selection between AD797ANZ and TL031CP depends on application-specific requirements for bandwidth, input bias current, and supply voltage constraints.

Frequently Asked Questions (FAQ)

Q: Can the AD797ANZ directly replace the LM301AN/NOPB in all applications?

A: The AD797ANZ provides direct package and pinout compatibility in the 8-DIP through-hole format. However, the maximum supply voltage is 30V compared to the LM301AN/NOPB's 36V maximum. Applications operating above 30V supply voltage require the TL031CP or alternative solutions. The AD797ANZ's significantly higher bandwidth and lower input offset voltage may require circuit design verification in applications sensitive to these parameter changes.

Q: What is the primary difference between the AD797ANZ and TL031CP substitutes?

A: The AD797ANZ is a general-purpose amplifier with high bandwidth (110MHz) and moderate input bias current (250nA), suitable for wideband applications. The TL031CP is a J-FET amplifier with extremely low input bias current (2pA) and moderate bandwidth (1.1MHz), suitable for high-impedance input circuits. Both maintain the 8-DIP package and 10V minimum supply requirement.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The AD797ANZ and TL031CP are both ROHS3 compliant, matching the environmental compliance status of the LM301AN/NOPB. Both substitutes are also REACH unaffected.

Q: What is the maximum supply voltage for substitute parts?

A: Both the AD797ANZ and TL031CP have a maximum supply voltage of 30V, which is lower than the LM301AN/NOPB's 36V maximum. Applications requiring operation above 30V must use the original LM301AN/NOPB or identify alternative solutions outside this substitute list.

Q: Do the substitute parts require PCB layout modifications?

A: No. Both substitute parts use the identical 8-DIP (0.300", 7.62mm) through-hole package as the LM301AN/NOPB, enabling direct board-level replacement without layout changes. Pin assignments remain compatible for standard operational amplifier configurations.

Q: What is the operating temperature range for each substitute?

A: The LM301AN/NOPB and TL031CP both operate from 0°C to 70°C. The AD797ANZ extends the operating range to -40°C to 85°C, providing wider temperature coverage for applications requiring extended thermal performance.

Q: How do input bias current specifications affect circuit design?

A: The TL031CP has the lowest input bias current at 2pA, followed by the LM301AN/NOPB at 70nA, and the AD797ANZ at 250nA. Lower input bias current reduces errors in high-impedance input circuits and minimizes offset voltage drift. Applications with impedances exceeding 1MΩ benefit from the TL031CP's J-FET input stage.