LP2904D Equivalent & Substitute Parts Reference

Part Overview

The LP2904D is a general-purpose operational amplifier manufactured by Texas Instruments, packaged in 8-SOIC surface mount configuration. This device integrates two independent amplifier circuits suitable for a wide range of analog signal processing applications. The LP2904D is currently in Last Time Buy status, indicating discontinued production. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications currently utilizing this component.

Key Parameters

Parameter	LP2904D Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Slew Rate	0.05	V/µs
Gain Bandwidth Product	100	kHz
Current - Input Bias	2	nA
Voltage - Input Offset	2	mV
Current - Supply (x2 Channels)	54	µA
Current - Output / Channel	10	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	32	V
Operating Temperature	-40 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the LP2904D are classified into two distinct groups based on electrical parameter compatibility:

Group 1: Direct Electrical Equivalents (LP2904 Series) Parts LP2904DR and LP2904MX/NOPB maintain identical electrical specifications to the LP2904D, including slew rate (0.05 V/µs), gain bandwidth product (100 kHz), input bias current (2 nA), and supply current (54 µA). These parts differ only in packaging format (Cut Tape vs. Tube) and product status (Active vs. Last Time Buy). Substitution within this group requires no circuit redesign.

Group 2: Enhanced Performance Alternatives (LM2904 and LM358 Series) Parts LM2904M/NOPB, LM2904MX/NOPB, LM358AM/NOPB, LM358AMX/NOPB, LM358M/NOPB, and LM358MX/NOPB offer improved electrical performance with higher gain bandwidth product (1 MHz), increased output current capability (40 mA), and reduced input bias current (45 nA). These parts maintain compatible supply voltage ranges (3 V to 32 V) and 8-SOIC packaging. Substitution requires verification that enhanced performance does not introduce stability or noise concerns in the target application.

Group 3: Alternative Manufacturer Solutions (Rohm Semiconductor) Parts BA10358F-E1, BA10358F-E2, and BA2904F-E2 from Rohm Semiconductor provide functional equivalence with different electrical characteristics. These parts feature higher slew rates (0.2 V/µs), higher gain bandwidth products (500 kHz), and different package dimensions (8-SOP, 0.173" width). Substitution requires mechanical PCB layout verification and thermal performance assessment.

Parameter Comparison

Part Number	Manufacturer	Slew Rate (V/µs)	GBW (kHz)	Input Bias (nA)	Supply Current (µA)	Output Current (mA)	Temp Range (°C)	Package	Status
LP2904D	Texas Instruments	0.05	100	2	54	10	-40 to 85	8-SOIC (3.90mm)	Last Time Buy
LP2904DR	Texas Instruments	0.05	100	2	54	10	-40 to 85	8-SOIC (3.90mm)	Active
LM2904M/NOPB	Texas Instruments	—	1000	45	1000	40	-40 to 85	8-SOIC (3.90mm)	Active
LM2904MX/NOPB	Texas Instruments	—	1000	45	1000	40	-40 to 85	8-SOIC (3.90mm)	Active
LM358AM/NOPB	Texas Instruments	—	1000	45	1000	40	0 to 70	8-SOIC (3.90mm)	Active
LM358AMX/NOPB	Texas Instruments	—	1000	45	1000	40	0 to 70	8-SOIC (3.90mm)	Active
LM358M/NOPB	Texas Instruments	—	1000	45	1000	40	0 to 70	8-SOIC (3.90mm)	Active
LM358MX/NOPB	Texas Instruments	—	1000	45	1000	40	0 to 70	8-SOIC (3.90mm)	Active
BA10358F-E1	Rohm Semiconductor	0.2	500	45	700	20	-40 to 85	8-SOP (4.40mm)	Active
BA10358F-E2	Rohm Semiconductor	0.2	500	45	700	20	-40 to 85	8-SOP (4.40mm)	Active
BA2904F-E2	Rohm Semiconductor	0.2	500	20	500	30	-40 to 125	8-SOP (4.40mm)	Active

Engineering Selection Recommendations

Primary Recommendation: LP2904DR LP2904DR is the preferred direct substitute for LP2904D. This part maintains identical electrical specifications across all critical parameters: slew rate, gain bandwidth product, input bias current, supply current, and output current capability. Both parts operate across the same temperature range (-40°C to 85°C) and are packaged in 8-SOIC format with 3.90mm width. LP2904DR holds Active product status, ensuring long-term availability and supply chain stability. The only difference is packaging format (Cut Tape vs. Tube), which does not affect electrical performance. This substitution requires no circuit modification or validation testing.

Secondary Recommendation: LM2904M/NOPB or LM2904MX/NOPB These parts are suitable for applications where enhanced performance is beneficial or required. Both maintain the same supply voltage range (3 V to 32 V) and 8-SOIC packaging as the LP2904D. The LM2904 series offers 10× higher gain bandwidth product (1 MHz vs. 100 kHz), 4× higher output current capability (40 mA vs. 10 mA), and lower input bias current (45 nA vs. 2 nA). These improvements reduce circuit noise and increase output drive capability. Applications with tight bandwidth requirements or high-impedance loads benefit from this upgrade. LM2904MX/NOPB is available in higher quantities (35,400 pcs) compared to LM2904M/NOPB (5,000,200 pcs inventory).

Tertiary Recommendation: LM358 Series (LM358AM/NOPB, LM358AMX/NOPB, LM358M/NOPB, LM358MX/NOPB) LM358 variants provide equivalent performance to the LM2904 series with identical electrical specifications. The primary distinction is operating temperature range: LM358 parts operate from 0°C to 70°C, compared to LM2904 parts at -40°C to 85°C. Select LM358 variants only for applications operating within the 0°C to 70°C range. LM358MX/NOPB offers the highest inventory availability (74,281 pcs) among all substitute options.

Alternative Manufacturer Option: Rohm Semiconductor BA10358F-E2 or BA2904F-E2 Rohm parts provide functional equivalence with different electrical characteristics. BA10358F-E2 offers higher slew rate (0.2 V/µs vs. 0.05 V/µs) and higher gain bandwidth product (500 kHz vs. 100 kHz), with excellent inventory availability (150,300 pcs). BA2904F-E2 extends operating temperature to -40°C to 125°C, supporting high-temperature applications. Both Rohm parts use 8-SOP packaging with 4.40mm width, requiring PCB layout verification due to different package dimensions. All Rohm parts maintain ROHS3 compliance and MSL Level 1 rating.

All recommended substitutes maintain ROHS3 compliance, MSL Level 1 (Unlimited) moisture sensitivity, and EAR99 export classification, ensuring regulatory and supply chain compatibility with the original LP2904D specification.

Frequently Asked Questions (FAQ)

Q1: Can LP2904DR be used as a direct replacement for LP2904D without circuit modification?

A: Yes. LP2904DR is electrically identical to LP2904D across all specified parameters: slew rate (0.05 V/µs), gain bandwidth product (100 kHz), input bias current (2 nA), supply current (54 µA), output current (10 mA), and operating temperature range (-40°C to 85°C). Both parts use 8-SOIC packaging with 3.90mm width. The only difference is packaging format (Cut Tape vs. Tube), which does not affect circuit performance. No redesign or validation testing is required.

Q2: What is the difference between LP2904D and LM2904M/NOPB?

A: Both parts are dual general-purpose operational amplifiers in 8-SOIC packaging from Texas Instruments. Key differences are: LM2904M/NOPB has 10× higher gain bandwidth product (1 MHz vs. 100 kHz), 4× higher output current capability (40 mA vs. 10 mA), and higher input bias current (45 nA vs. 2 nA). LM2904M/NOPB is suitable for applications requiring higher bandwidth or greater output drive capability. The supply voltage range (3 V to 32 V) and operating temperature range (-40°C to 85°C) are identical. Substitution is possible but requires verification that the enhanced performance does not introduce stability issues in the target circuit.

Q3: Why do LM358 parts have a narrower operating temperature range than LM2904 parts?

A: LM358 and LM2904 are distinct product lines from Texas Instruments with different design specifications. LM358 parts are specified for 0°C to 70°C operation, while LM2904 parts operate from -40°C to 85°C. This reflects different manufacturing processes and quality screening. Select LM358 variants only for applications operating within the 0°C to 70°C range. For applications requiring -40°C to 85°C operation, use LP2904DR or LM2904 series parts.

Q4: Can Rohm Semiconductor BA10358F-E2 replace LP2904D in all applications?

A: BA10358F-E2 provides functional equivalence but with different electrical characteristics. Key differences are: higher slew rate (0.2 V/µs vs. 0.05 V/µs), higher gain bandwidth product (500 kHz vs. 100 kHz), higher supply current (700 µA vs. 54 µA), and different package dimensions (8-SOP 4.40mm width vs. 8-SOIC 3.90mm width). The supply voltage range (3 V to 32 V) and operating temperature range (-40°C to 85°C) are compatible. Substitution requires PCB layout verification due to package dimension differences and assessment of whether higher bandwidth and slew rate are compatible with the target circuit design.

Q5: What is the significance of packaging format (Tube vs. Cut Tape vs. Digi-Reel)?

A: Packaging format affects component handling, storage, and automated assembly processes but does not impact electrical performance. Tube packaging is suitable for manual assembly or low-volume production. Cut Tape (CT) packaging is standard for automated pick-and-place assembly. Digi-Reel® is a continuous reel format optimized for high-volume automated manufacturing. Select packaging format based on production volume and assembly equipment compatibility. Electrical specifications remain identical across all packaging formats for the same part number.

Q6: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts (LP2904DR, LM2904 series, LM358 series, and Rohm BA10358/BA2904 series) are ROHS3 compliant. All parts also maintain MSL Level 1 (Unlimited) moisture sensitivity rating and EAR99 export classification, ensuring regulatory and supply chain compatibility with the original LP2904D specification.

Q7: Which substitute part offers the best inventory availability?

A: LM358MX/NOPB offers the highest inventory availability at 74,281 pieces. BA10358F-E2 (Rohm) is the second-highest at 150,300 pieces. LM2904MX/NOPB provides 35,400 pieces. If inventory availability is a critical selection criterion, LM358MX/NOPB is the optimal choice, provided the 0°C to 70°C operating temperature range is compatible with the application.

Q8: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: (1) Number of circuits (must be 2), (2) Amplifier type (General Purpose), (3) Supply voltage range (3 V to 32 V minimum), (4) Operating temperature range (application requirement), (5) Package type (8-SOIC or 8-SOP), (6) Slew rate and gain bandwidth product (application bandwidth requirement), (7) Input bias current and offset voltage (application noise and precision requirement), (8) Output current capability (load drive requirement). Verify all parameters against the target application specification before substitution.

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