LM837N/NOPB Equivalent & Substitute Parts

Part Overview

The LM837N/NOPB is a general-purpose operational amplifier integrated circuit manufactured by Texas Instruments, configured as a quad amplifier (4 circuits) in a 14-pin DIP package. This device is classified as obsolete, indicating discontinued production and limited availability in the market. The LM837N/NOPB operates across a temperature range of -40°C to 85°C and is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Due to its obsolete status, identifying functionally equivalent substitute parts is necessary for design continuity, system maintenance, and component procurement. Substitute parts must maintain mechanical compatibility (14-DIP package, through-hole mounting) and electrical compatibility within the operational parameters of the original design.

Substiute Parts

LM837N/NOPB

Texas InstrumentsIn Stock: 833LM837N/NOPB Datasheet

Current PartRFQ

OPA4227PA

Burr BrownIn Stock: 2937OPA4227PA Datasheet

MFR RecommendedRFQ

OP467GPZ

Analog Devices Inc.In Stock: 1446OP467GPZ Datasheet

MFR RecommendedRFQ

OP470GPZ

Analog Devices Inc.In Stock: 1341OP470GPZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM837N/NOPB are selected based on strict compatibility criteria. All substitute candidates must satisfy the following mandatory requirements:

Mechanical Compatibility:

• Package type: 14-DIP (0.300", 7.62mm)
• Mounting type: Through Hole
• Pin count and pinout alignment with original device

Electrical Compatibility:

• Amplifier configuration: 4 circuits (quad amplifier)
• Operating temperature range: -40°C to 85°C minimum
• Supply voltage range: Must accommodate the original design's supply requirements
• Output current per channel: Minimum 40 mA
• Input bias current: Within acceptable range for general-purpose applications
• Slew rate and gain-bandwidth product: Must support signal fidelity requirements

Compliance & Status:

• ROHS3 compliance required
• Active product status preferred for long-term availability
• REACH compliance maintained

The three substitute parts identified (OPA4227PA, OP467GPZ, OP470GPZ) meet all mechanical and electrical compatibility criteria while offering active product status and improved availability compared to the obsolete LM837N/NOPB.

Parameter Comparison

Engineering Selection Recommendations

OPA4227PA (Burr Brown): This substitute offers the lowest input bias current (2.5 nA) and lowest input offset voltage (10 µV), making it suitable for precision measurement applications. Supply current is reduced to 3.7 mA across all four channels, providing improved power efficiency. The device supports a wider supply voltage range (5 V to 36 V) compared to the original LM837N/NOPB. Output current per channel (45 mA) exceeds the original specification. Active product status ensures long-term availability and supply chain continuity.

OP467GPZ (Analog Devices Inc.): This substitute provides the highest slew rate (350 V/µs) and gain-bandwidth product (28 MHz), supporting high-speed signal processing applications. Input bias current (150 nA) and input offset voltage (200 µV) remain within acceptable ranges for general-purpose amplification. Supply voltage range (9 V to 36 V) accommodates most standard power supply configurations. ROHS3 compliance and active product status are confirmed. Packaging is supplied in tube format.

OP470GPZ (Analog Devices Inc.): This substitute features the lowest input bias current among Analog Devices options (15 nA) and operates with reduced supply current (9 mA total). The device maintains compatibility with the original operating temperature range and supply voltage specifications (9 V to 36 V). ROHS3 compliance and active product status are confirmed. Packaging is supplied in tube format.

All three substitutes maintain mechanical compatibility through identical 14-DIP package specifications and through-hole mounting. Selection should be based on specific application requirements regarding slew rate, bandwidth, input bias current, and power consumption characteristics.

Frequently Asked Questions (FAQ)

Q: Can the OPA4227PA, OP467GPZ, and OP470GPZ be used as direct pin-for-pin replacements for the LM837N/NOPB?

A: Yes. All three substitute parts are configured as quad operational amplifiers in 14-DIP packages with identical pin counts and through-hole mounting. Pin-for-pin replacement is mechanically and electrically feasible. However, circuit performance characteristics will differ due to variations in slew rate, gain-bandwidth product, and input bias current specifications.

Q: What are the key electrical differences between the LM837N/NOPB and its substitutes?

A: The primary differences are slew rate, gain-bandwidth product, input bias current, and input offset voltage. The OP467GPZ offers significantly higher slew rate (350 V/µs vs. 10 V/µs). The OPA4227PA provides superior input offset voltage (10 µV vs. 300 µV). All substitutes reduce supply current consumption compared to the original device. These differences affect signal fidelity, noise performance, and power efficiency.

Q: Are all substitute parts ROHS3 compliant?

A: The OP467GPZ and OP470GPZ are confirmed ROHS3 compliant. ROHS3 compliance status for OPA4227PA is not specified in the provided data. Verification with the manufacturer or supplier is recommended if ROHS3 compliance is a design requirement.

Q: What is the supply voltage compatibility of each substitute?

A: The LM837N/NOPB operates at a fixed 30 V supply. The OPA4227PA supports 5 V to 36 V, providing the widest range. The OP467GPZ and OP470GPZ both support 9 V to 36 V. Designs operating at the original 30 V specification are compatible with all three substitutes.

Q: Which substitute is best for low-power applications?

A: The OPA4227PA consumes the lowest supply current at 3.7 mA across four channels, compared to 10 mA for the original LM837N/NOPB. This makes OPA4227PA the optimal choice for power-constrained designs.

Q: Which substitute is best for high-speed signal processing?

A: The OP467GPZ provides the highest slew rate (350 V/µs) and gain-bandwidth product (28 MHz), making it suitable for applications requiring fast signal response and high-frequency operation.

Q: Which substitute is best for precision measurement applications?

A: The OPA4227PA offers the lowest input bias current (2.5 nA) and lowest input offset voltage (10 µV), making it optimal for precision analog measurement and instrumentation circuits.

Q: Are there any packaging differences between the substitutes?

A: The OPA4227PA packaging format is not specified in the provided data. The OP467GPZ and OP470GPZ are supplied in tube packaging. All three maintain the 14-DIP (0.300", 7.62mm) package specification required for mechanical compatibility.

Q: What is the inventory status of each substitute?

A: OPA4227PA has 2,888 pieces in stock. OP467GPZ has 1,349 pieces in stock. OP470GPZ has 1,311 pieces in stock. All substitutes are available in quantities exceeding the original LM837N/NOPB inventory (776 pieces).