LM833N Equivalent & Substitute Parts

Part Overview

The LM833N is a dual-channel audio amplifier integrated circuit manufactured by Texas Instruments, housed in an 8-PDIP through-hole package. This device is classified as obsolete, though 15,805 units remain in current inventory. The LM833N is designed for audio frequency applications requiring moderate gain-bandwidth performance and dual-circuit configuration. Due to its obsolete status, equivalent and substitute parts are necessary for new designs, long-term supply assurance, and applications requiring active product support.

Substiute Parts

LM833N

Texas InstrumentsIn Stock: 15890LM833N Datasheet

Current PartRFQ

AS358P-E1

Diodes IncorporatedIn Stock: 67484AS358P-E1 Datasheet

MFR RecommendedRFQ

LT1462ACN8#PBF

Analog Devices Inc.In Stock: 802LT1462ACN8#PBF Datasheet

MFR RecommendedRFQ

LT1462CN8#PBF

Analog Devices Inc.In Stock: 759LT1462CN8#PBF Datasheet

MFR RecommendedRFQ

LT1464ACN8#PBF

Analog Devices Inc.In Stock: 3055LT1464ACN8#PBF Datasheet

MFR RecommendedRFQ

LT1464CN8#PBF

Analog Devices Inc.In Stock: 50438LT1464CN8#PBF Datasheet

MFR RecommendedRFQ

OP270GPZ

Analog Devices Inc.In Stock: 1274OP270GPZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM833N is determined by strict compatibility across the following critical parameters:

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

Dual-Circuit Configuration: All substitutes must contain exactly 2 independent amplifier circuits to maintain functional equivalence in dual-channel applications.

Operating Temperature Range: Substitutes must support the full -40°C to 85°C operating range to ensure performance across industrial and commercial temperature specifications.

Supply Voltage Compatibility: The LM833N operates across a 30 V supply span. Substitute parts must accommodate this voltage range or provide overlap within the application's power supply design.

Electrical Performance Envelope: Substitutes are grouped by amplifier type (Audio, General Purpose, or J-FET) and must demonstrate electrical characteristics suitable for audio frequency applications, including slew rate, gain-bandwidth product, and output current capacity.

Compliance Requirements: All substitutes must maintain ROHS3 compliance and REACH unaffected status to meet regulatory requirements equivalent to the original part.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes for Full Compatibility:

The LT1464ACN8#PBF and LT1464CN8#PBF are the closest functional equivalents to the LM833N. Both parts maintain the full -40°C to 85°C operating temperature range, support the 30 V maximum supply voltage, and provide dual J-FET amplifier circuits in the identical 8-DIP package. These parts are manufactured by Analog Devices Inc. and carry active product status with ROHS3 compliance. The LT1464 series offers superior input bias current performance (0.5 pA versus 500 nA) and lower input offset voltage (600 µV versus 300 µV), making them suitable for precision audio applications. Current inventory for LT1464ACN8#PBF is 3,010 units and 50,400 units for LT1464CN8#PBF, ensuring supply availability.

Secondary Substitutes with Temperature Limitations:

The LT1462ACN8#PBF and LT1462CN8#PBF are J-FET amplifiers with dual circuits and 8-DIP packaging. However, these parts operate only across 0°C to 70°C, which does not cover the full -40°C to 85°C range of the LM833N. These substitutes are suitable only for applications with restricted operating temperature requirements. Both maintain ROHS3 compliance and active product status.

General Purpose Alternatives:

The AS358P-E1 (Diodes Incorporated) and OP270GPZ (Analog Devices Inc.) are general-purpose dual amplifiers in 8-DIP packages with active product status and ROHS3 compliance. The AS358P-E1 supports a wider supply range (3 V to 36 V) and maintains the -40°C to 85°C temperature range, though it exhibits higher input offset voltage (2 mV). The OP270GPZ provides superior input offset voltage (50 µV) and operates across -40°C to 85°C with a 9 V to 36 V supply range. Both parts are suitable for general audio applications where the specific audio-optimized characteristics of the LM833N are not critical.

Compliance and Supply Assurance:

All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the original LM833N. Selection should prioritize parts with active product status to ensure long-term availability and manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can the LT1464ACN8#PBF directly replace the LM833N without PCB modifications?

A: Yes. Both parts use the 8-DIP (0.300", 7.62mm) through-hole package with identical pin spacing and configuration. Direct socket substitution is possible without PCB layout changes. Electrical performance differences must be evaluated for the specific application.

Q: Why do the LT1462 series parts have a narrower operating temperature range?

A: The LT1462ACN8#PBF and LT1462CN8#PBF are specified for 0°C to 70°C operation, which does not include the full -40°C to 85°C range of the LM833N. These parts are unsuitable for applications requiring extended low-temperature operation below 0°C or high-temperature operation above 70°C.

Q: What is the difference between LT1464ACN8#PBF and LT1464CN8#PBF?

A: Both parts are J-FET dual amplifiers with identical electrical specifications and 8-DIP packaging. The primary difference is inventory availability: LT1464ACN8#PBF has 3,010 units in stock, while LT1464CN8#PBF has 50,400 units. Selection may depend on quantity requirements and lead time considerations.

Q: Is the AS358P-E1 suitable for audio applications?

A: The AS358P-E1 is classified as a general-purpose amplifier rather than an audio-optimized device. It provides dual circuits in an 8-DIP package with -40°C to 85°C operation and ROHS3 compliance. However, its input offset voltage of 2 mV is higher than the LM833N (300 µV), which may affect audio signal fidelity in precision applications. Evaluation is required for specific audio frequency requirements.

Q: What are the key electrical differences between the LM833N and OP270GPZ?

A: The OP270GPZ offers superior input offset voltage (50 µV versus 300 µV) and lower slew rate (2.4 V/µs versus 7 V/µs). The OP270GPZ gain-bandwidth product is 5 MHz compared to the LM833N's 15 MHz. Both support -40°C to 85°C operation and dual circuits in 8-DIP packages. The OP270GPZ is suitable for general-purpose applications where lower input offset voltage is beneficial.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (AS358P-E1, LT1462ACN8#PBF, LT1462CN8#PBF, LT1464ACN8#PBF, LT1464CN8#PBF, and OP270GPZ) are ROHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to the LM833N.

Q: Which substitute offers the lowest input bias current?

A: The LT1464 series (both ACN8#PBF and CN8#PBF variants) provides the lowest input bias current at 0.5 pA, compared to the LM833N's 500 nA. This superior performance is characteristic of J-FET input amplifiers and is beneficial for high-impedance signal sources.

Q: Can I use the AS358P-E1 in a ±15 V dual supply configuration?

A: The AS358P-E1 supports a supply span of 3 V to 36 V, which accommodates ±15 V dual supply operation (total span of 30 V). However, verification of the specific application's power supply design is required to ensure compatibility.