LM2904AS-13 Equivalent & Substitute Parts

Part Overview

The LM2904AS-13 is a general-purpose operational amplifier manufactured by Diodes Incorporated, featuring dual amplifier circuits in an 8-SOIC surface mount package. This device is classified as Active product status and is RoHS3 compliant. The LM2904AS-13 operates across a wide supply voltage range of 3V to 36V and is suitable for applications requiring low-cost, general-purpose amplification in industrial and consumer electronics.

Substitute parts are identified when equivalent functional performance can be achieved through alternative manufacturers' components that maintain mechanical compatibility and meet or exceed electrical specifications within the same package form factor.

Substiute Parts

LM2904AS-13

Diodes IncorporatedIn Stock: 17900LM2904AS-13 Datasheet

Current PartRFQ

AD648JRZ-REEL

Analog Devices Inc.In Stock: 2149AD648JRZ-REEL Datasheet

MFR RecommendedRFQ

LT1464CS8#PBF

Analog Devices Inc.In Stock: 2422LT1464CS8#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM2904AS-13 are identified based on the following criteria:

Mechanical Compatibility: All substitute parts must utilize the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure direct PCB footprint compatibility without layout modifications.

Functional Equivalence: Substitute parts must provide dual amplifier circuits (2 circuits minimum) in a single integrated circuit package.

Electrical Performance: Substitute parts are evaluated on parameters including slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current capability, and supply voltage range. Substitutes may exceed the electrical specifications of the LM2904AS-13.

Compliance & Status: All substitute parts must maintain Active product status and RoHS3 compliance to ensure long-term availability and regulatory conformance.

The identified substitutes represent J-FET amplifier topologies that provide enhanced electrical performance characteristics compared to the general-purpose topology of the LM2904AS-13, while maintaining mechanical and functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

AD648JRZ-REEL (Analog Devices Inc.): This J-FET amplifier substitute provides enhanced slew rate (1.8V/µs) and gain bandwidth product (1 MHz) compared to the LM2904AS-13. Input bias current is significantly reduced to 5 pA, and input offset voltage is 750 µV. The device operates across a 9V to 36V supply range and maintains a 0°C to 70°C operating temperature window. Moisture sensitivity is rated MSL 1 (Unlimited). This substitute is suitable for applications requiring improved dynamic performance and lower input bias current characteristics. The minimum supply voltage requirement of 9V must be verified against circuit design specifications.

LT1464CS8#PBF (Analog Devices Inc., LT® Series): This J-FET amplifier substitute offers the lowest input bias current (0.5 pA) and lowest input offset voltage (600 µV) among the identified substitutes, with moderate slew rate (0.9V/µs) and gain bandwidth product (1 MHz). Supply current consumption is minimized at 145 µA across dual channels. The device operates across a 10V to 30V supply range and maintains a -40°C to 85°C operating temperature window, providing extended low-temperature performance compared to AD648JRZ-REEL. Moisture sensitivity is rated MSL 1 (Unlimited). This substitute is optimal for applications requiring ultra-low input bias current and minimal power consumption. The minimum supply voltage requirement of 10V and maximum supply voltage of 30V must be verified against circuit design specifications.

All substitute parts maintain RoHS3 compliance and Active product status, ensuring regulatory conformance and long-term component availability.

Frequently Asked Questions (FAQ)

Q: Can the AD648JRZ-REEL directly replace the LM2904AS-13 in existing PCB designs?

A: Yes, the AD648JRZ-REEL shares the identical 8-SOIC (0.154", 3.90mm Width) package footprint and pin configuration, enabling direct PCB substitution without layout modifications. However, the minimum supply voltage requirement of 9V must be verified against the circuit's power supply specification, as the LM2904AS-13 operates from 3V minimum.

Q: What is the primary difference between the LM2904AS-13 and the J-FET substitute options?

A: The LM2904AS-13 is a general-purpose bipolar amplifier, while AD648JRZ-REEL and LT1464CS8#PBF are J-FET amplifiers. J-FET topology provides significantly lower input bias current (5 pA and 0.5 pA respectively, versus 20 nA), lower input offset voltage, and reduced power consumption. These characteristics make J-FET substitutes suitable for high-impedance input applications and low-power designs.

Q: Which substitute part is recommended for low-temperature operation?

A: The LT1464CS8#PBF supports operating temperatures from -40°C to 85°C, matching the LM2904AS-13's lower temperature limit of -40°C. The AD648JRZ-REEL operates from 0°C to 70°C and is not suitable for applications requiring sub-zero temperature performance.

Q: Are there supply voltage compatibility concerns when substituting these parts?

A: Yes. The LM2904AS-13 operates from 3V to 36V. The AD648JRZ-REEL requires a minimum of 9V, and the LT1464CS8#PBF requires a minimum of 10V. Circuits designed for 3V to 8V operation cannot use these J-FET substitutes. Additionally, the LT1464CS8#PBF has a maximum supply voltage of 30V, limiting its use in circuits requiring 30V to 36V operation.

Q: What is the moisture sensitivity impact of these substitutes?

A: The LM2904AS-13 has MSL 3 (168 Hours), requiring controlled storage and handling. Both AD648JRZ-REEL and LT1464CS8#PBF have MSL 1 (Unlimited), indicating superior moisture resistance and more flexible storage conditions without desiccant requirements.

Q: Can the LT1464CS8#PBF be used in applications requiring the full 36V supply range?

A: No. The LT1464CS8#PBF has a maximum supply voltage rating of 30V and cannot be used in circuits operating at 30V to 36V. The AD648JRZ-REEL supports the full 36V maximum and is the appropriate substitute for high-voltage applications.

Q: How do the output current capabilities compare between these parts?

A: The LM2904AS-13 provides 40 mA per channel output current. The AD648JRZ-REEL provides 15 mA per channel. The LT1464CS8#PBF output current specification is not provided in the available data. Applications requiring high output current (above 15 mA per channel) may require circuit redesign or alternative component selection.