LP2904DR Equivalent & Substitute Parts

Part Overview

The LP2904DR is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This dual-channel amplifier operates across a supply voltage range of 3V to 32V and is rated for temperatures from -40°C to 85°C. The device is currently in active product status with 1900 pieces available in inventory.

The LP2904DR is suitable for applications requiring low-power general-purpose amplification. Substitute parts are necessary when addressing specific application requirements such as extended temperature ranges, higher output current capabilities, improved gain-bandwidth characteristics, or alternative packaging preferences while maintaining functional compatibility.

Key Parameters

Parameter	LP2904DR (Main Part)
Manufacturer	Texas Instruments
Amplifier Type	General Purpose
Number of Circuits	2
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Slew Rate	0.05V/µs
Gain Bandwidth Product	100 kHz
Current - Input Bias	2 nA
Voltage - Input Offset	2 mV
Current - Supply	54µA (x2 Channels)
Current - Output / Channel	10 mA
Voltage - Supply Span (Min)	3 V
Voltage - Supply Span (Max)	32 V
Operating Temperature	-40°C ~ 85°C
Product Status	Active
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution compatibility for the LP2904DR is determined by the following critical parameters:

Primary Compatibility Criteria:

Dual-channel general-purpose amplifier configuration (2 circuits)
8-pin surface mount package (8-SOIC or equivalent 8-SOP)
Supply voltage range: minimum 3V, maximum 32V
Operating temperature range: -40°C to 85°C (or extended)
Input offset voltage: 2 mV maximum
RoHS3 compliance and MSL Level 1

Secondary Performance Considerations:

Gain-bandwidth product (100 kHz minimum for LP2904DR baseline)
Input bias current (2 nA for LP2904DR)
Output current per channel (10 mA minimum for LP2904DR)
Supply current consumption
Slew rate characteristics

Substitute parts are grouped into two categories:

Category 1: Texas Instruments LM2904 and LM358 Series – Direct functional equivalents with enhanced performance specifications (higher gain-bandwidth product, increased output current capability). These parts maintain identical pinout and package footprint compatibility.

Category 2: Alternative Manufacturers (Rohm Semiconductor, onsemi) – Cross-manufacturer equivalents offering comparable electrical characteristics with potential variations in slew rate, supply current, and temperature range. Package dimensions may vary slightly (8-SOP vs. 8-SOIC).

All substitute parts maintain the core requirement of dual-channel general-purpose amplification in surface mount packages with compatible supply voltage and temperature operating ranges.

Parameter Comparison

Parameter	LP2904DR (TI)	LM2904M/NOPB (TI)	LM358AM/NOPB (TI)	LM358AMX/NOPB (TI)	LM358M/NOPB (TI)	LM358MX/NOPB (TI)	BA10358F-E2 (Rohm)	BA2904F-E2 (Rohm)	LM258DR2G (onsemi)	LM2904DR (Rohm)	LM2904DT (Rohm)
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Rohm Semiconductor	Rohm Semiconductor	onsemi	Rohm Semiconductor	Rohm Semiconductor
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Package / Case	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.173", 4.40mm)	8-SOIC (0.173", 4.40mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Slew Rate	0.05V/µs	—	—	—	—	—	0.2V/µs	0.2V/µs	—	0.3V/µs	0.3V/µs
Gain Bandwidth Product	100 kHz	1 MHz	1 MHz	1 MHz	1 MHz	1 MHz	500 kHz	500 kHz	1 MHz	700 kHz	700 kHz
Current - Input Bias	2 nA	45 nA	45 nA	45 nA	45 nA	45 nA	45 nA	20 nA	45 nA	20 nA	20 nA
Voltage - Input Offset	2 mV	2 mV	2 mV	2 mV	2 mV	2 mV	2 mV	2 mV	2 mV	3 mV	1 mV
Current - Supply	54µA (x2)	1mA	1mA	1mA	1mA	1mA	700µA	500µA	800µA (x2)	1mA	600µA
Current - Output / Channel	10 mA	40 mA	40 mA	40 mA	40 mA	40 mA	20 mA	30 mA	40 mA	40 mA	30 mA
Voltage - Supply Span (Min)	3 V	3 V	3 V	3 V	3 V	3 V	3 V	3 V	3 V	3 V	3 V
Voltage - Supply Span (Max)	32 V	32 V	32 V	32 V	32 V	32 V	32 V	32 V	32 V	26 V	32 V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 125°C	-25°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Not For New Designs	Not For New Designs
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Active Product Status with Extended Temperature Range:

The LM2904M/NOPB maintains Texas Instruments manufacturing continuity with active product status and -40°C to 85°C operating range matching the LP2904DR. This part offers enhanced gain-bandwidth product (1 MHz vs. 100 kHz) and increased output current capability (40 mA vs. 10 mA per channel), making it suitable for applications requiring higher performance while preserving the original temperature specification.

For Extended Temperature Operation (-40°C to 125°C):

The BA2904F-E2 (Rohm Semiconductor) and LM2904DT (Rohm Semiconductor) extend the upper operating temperature to 125°C. Both parts maintain the 3V to 32V supply range and dual-channel configuration. The BA2904F-E2 provides 30 mA output current per channel with 500 kHz gain-bandwidth product. The LM2904DT offers 30 mA output current with 700 kHz gain-bandwidth product and lower input offset voltage (1 mV). Note that LM2904DT carries "Not For New Designs" status.

For High-Volume Applications with Improved Availability:

The LM358MX/NOPB (Texas Instruments) offers the highest inventory availability (74,281 pieces) with active product status. This part provides 1 MHz gain-bandwidth product and 40 mA output current per channel. Operating temperature range is 0°C to 70°C, which is narrower than the LP2904DR but suitable for controlled industrial and commercial environments.

For Cross-Manufacturer Compatibility:

The LM258DR2G (onsemi) maintains the 8-SOIC package footprint with 1 MHz gain-bandwidth product and 40 mA output current per channel. Operating temperature range is -25°C to 85°C. This part is suitable for applications where manufacturer diversification is required while maintaining electrical compatibility.

Package Consideration:

The BA10358F-E2 (Rohm Semiconductor) uses an 8-SOP package with slightly larger width (0.173" vs. 0.154"), which may require PCB layout verification before substitution. This part is not recommended for direct drop-in replacement without confirming package footprint compatibility.

Avoid for New Designs:

The LM2904DR (Rohm Semiconductor) and LM2904DT (Rohm Semiconductor) carry "Not For New Designs" status and should not be selected for new product development, despite their extended temperature capabilities.

Frequently Asked Questions (FAQ)

Q: Can the LM358 series parts directly replace the LP2904DR?

A: The LM358AM/NOPB, LM358AMX/NOPB, and LM358M/NOPB are electrically compatible with identical pinout and package footprint (8-SOIC). However, the operating temperature range is narrower (0°C to 70°C vs. -40°C to 85°C). Substitution is valid only for applications operating within the 0°C to 70°C range. All three parts offer superior gain-bandwidth product (1 MHz) and output current (40 mA per channel).

Q: What is the difference between LM358AMX/NOPB and LM358M/NOPB?

A: Both parts are electrically identical with 1 MHz gain-bandwidth product, 40 mA output current per channel, and 0°C to 70°C operating temperature. The primary difference is packaging: LM358AMX/NOPB is supplied in Cut Tape (CT) & Digi-Reel format with 2,020 pieces in inventory, while LM358M/NOPB is supplied in Tube format with 4,180 pieces in inventory. Select based on assembly line requirements and available inventory.

Q: Is the BA2904F-E2 a suitable replacement for extended temperature applications?

A: Yes. The BA2904F-E2 (Rohm Semiconductor) extends the upper operating temperature to 125°C while maintaining the 3V to 32V supply range and dual-channel configuration. However, the package width is 0.173" (4.40mm) compared to the LP2904DR's 0.154" (3.90mm). PCB layout verification is required before substitution to confirm package footprint compatibility on existing designs.

Q: Why does the LP2904DR have lower input bias current (2 nA) compared to most substitutes (20-45 nA)?

A: The LP2904DR specification reflects its baseline performance characteristics. Substitute parts with higher input bias current (20-45 nA) are still within acceptable limits for general-purpose amplifier applications. Input bias current becomes critical only in high-impedance signal conditioning circuits. For standard applications, the difference is not functionally significant.

Q: Can I use LM2904M/NOPB as a direct replacement in existing designs?

A: Yes. The LM2904M/NOPB maintains identical pinout, package footprint (8-SOIC), and operating temperature range (-40°C to 85°C) as the LP2904DR. It offers enhanced performance with 1 MHz gain-bandwidth product and 40 mA output current per channel. This is a recommended upgrade path for active product continuity.

Q: What is the significance of "Not For New Designs" status on LM2904DR and LM2904DT?

A: Parts marked "Not For New Designs" are legacy products that remain available for existing design support but should not be selected for new product development. These parts may have limited long-term availability or manufacturing support. For new designs, select parts with "Active" product status such as LM2904M/NOPB or LM358 series variants.

Q: How does supply current consumption affect substitution decisions?

A: The LP2904DR consumes 54µA (dual channels). Substitute parts consume 500µA to 1mA, representing a 9x to 18x increase. In battery-powered or ultra-low-power applications, this difference is significant and may require circuit redesign. For line-powered applications, the difference is negligible. Verify power budget requirements before substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 Compliant status and MSL Level 1 (Unlimited moisture sensitivity). All parts are suitable for lead-free assembly processes and meet environmental compliance requirements equivalent to the LP2904DR.

Q: What is the practical difference between 100 kHz and 1 MHz gain-bandwidth product?

A: The LP2904DR's 100 kHz gain-bandwidth product limits closed-loop bandwidth to approximately 100 kHz at unity gain. Substitute parts with 1 MHz gain-bandwidth product provide 10x higher bandwidth capability, enabling faster signal processing and higher-frequency applications. For low-frequency signal conditioning (DC to 10 kHz), the difference is not functionally significant.

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