LMP2234BMAE/NOPB Equivalent & Substitute Parts

Part Overview

The LMP2234BMAE/NOPB is a general purpose operational amplifier manufactured by Texas Instruments, configured as a 4-circuit differential, rail-to-rail amplifier in a 14-SOIC surface mount package. This device is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, manufacturing discontinuation, or specific application performance parameters that fall within acceptable operational ranges.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	LMP2234BMAE/NOPB	—
Manufacturer	Texas Instruments	—
Number of Circuits	4	—
Amplifier Type	General Purpose	—
Output Type	Differential, Rail-to-Rail	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Voltage - Supply Span (Min)	1.6	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 125	°C
Slew Rate	0.048	V/µs
Gain Bandwidth Product	130	kHz
Current - Input Bias	0.02	pA
Voltage - Input Offset	10	µV
Current - Supply	36	µA (x4 Channels)
Current - Output / Channel	30	mA
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—
Product Status	Active	—

Substitute Part Grouping Explanation

Substitute parts for the LMP2234BMAE/NOPB are selected based on strict electrical and mechanical compatibility criteria. The following parameters define acceptable substitution:

Primary Compatibility Criteria:

Number of Circuits: 4 (mandatory)
Output Type: Rail-to-Rail (mandatory)
Package / Case: 14-SOIC with 0.154" (3.90mm) width (mandatory for direct PCB replacement)
Mounting Type: Surface Mount (mandatory)
Voltage - Supply Span: Minimum 1.6V to 5.5V maximum (must encompass or exceed the original range)
Operating Temperature: Must support -40°C to 125°C range or equivalent industrial specification
RoHS3 Compliance: Required
MSL Rating: 1 (Unlimited) preferred

Secondary Performance Parameters: Slew Rate, Gain Bandwidth Product, Input Bias Current, Input Offset Voltage, Supply Current, and Output Current per Channel are provided for application-specific evaluation but do not restrict substitution eligibility when primary criteria are met.

Substitute parts are grouped into two categories: Direct Pin-Compatible Substitutes (identical package and pinout) and Functional Equivalents (same circuit count and output characteristics with compatible but different package dimensions).

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Number of Circuits	Output Type	Package / Case	Voltage Supply Min (V)	Voltage Supply Max (V)	Operating Temp (°C)	Slew Rate (V/µs)	GBW (kHz/MHz)	Supply Current (µA)	Output Current/Ch (mA)	RoHS Status
LMP2234BMAE/NOPB	Texas Instruments	General Purpose	4	Differential, Rail-to-Rail	14-SOIC (3.90mm)	1.6	5.5	-40 to 125	0.048	130 kHz	36	30	ROHS3
MCP6424T-E/SL	Microchip Technology	General Purpose	4	Rail-to-Rail	14-SOIC (3.90mm)	1.8	5.5	-40 to 125	0.05	90 kHz	4.4	22	ROHS3
MCP6424-E/SL	Microchip Technology	General Purpose	4	Rail-to-Rail	14-SOIC (3.90mm)	1.8	5.5	-40 to 125	0.05	90 kHz	4.4	22	ROHS3
MCP6494-E/SL	Microchip Technology	General Purpose	4	Rail-to-Rail	14-SOIC (3.90mm)	2.4	5.5	-40 to 125	6	7.5 MHz	530	15	ROHS3
MCP6474-E/SL	Microchip Technology	CMOS	4	Rail-to-Rail	14-SOIC (3.90mm)	2	5.5	-40 to 125	1.1	2 MHz	100	32	ROHS3
NCV20034DR2G	onsemi	General Purpose	4	Rail-to-Rail	14-SOIC (3.90mm)	1.7	5.5	-40 to 125	8	7 MHz	275	96	ROHS3
NCS20034DR2G	onsemi	General Purpose	4	Rail-to-Rail	14-SOIC (3.90mm)	1.7	5.5	—	8	7 MHz	275	8	ROHS3
BU7244F-E2	Rohm Semiconductor	CMOS	4	Rail-to-Rail	14-SOP (4.40mm)	1.8	5.5	-40 to 85	0.4	900 kHz	360	12	ROHS3
BU7487F-E2	Rohm Semiconductor	CMOS	4	Rail-to-Rail	14-SOP (4.40mm)	3	5.5	-40 to 105	10	10 MHz	6	12	ROHS3
LMR934F-GE2	Rohm Semiconductor	General Purpose	4	Rail-to-Rail	14-SOP (4.40mm)	1.8	5	-40 to 85	0.35	1.4 MHz	250	90	ROHS3

Engineering Selection Recommendations

Direct Pin-Compatible Substitutes (14-SOIC 3.90mm Package):

The following parts maintain identical package geometry and are suitable for direct PCB replacement without layout modification:

MCP6424T-E/SL and MCP6424-E/SL (Microchip Technology): Both are general purpose 4-circuit amplifiers with rail-to-rail output in 14-SOIC packaging. Operating temperature range matches the original (-40°C to 125°C). Supply voltage range (1.8V to 5.5V) encompasses the original specification. These parts are Active status and RoHS3 compliant. Slew rate (0.05V/µs) and gain bandwidth product (90 kHz) are comparable to the original. Supply current is significantly lower (4.4µA vs. 36µA), making these suitable for low-power applications.
MCP6494-E/SL (Microchip Technology): General purpose 4-circuit amplifier with rail-to-rail output in 14-SOIC packaging. Operating temperature range (-40°C to 125°C) matches the original. Supply voltage minimum is 2.4V, which is higher than the original 1.6V minimum; applications requiring operation below 2.4V are not suitable for this substitute. Slew rate (6V/µs) and gain bandwidth product (7.5 MHz) are significantly higher, supporting higher-frequency applications. Active status and RoHS3 compliant.
MCP6474-E/SL (Microchip Technology): CMOS 4-circuit amplifier with rail-to-rail output in 14-SOIC packaging. Operating temperature range (-40°C to 125°C) matches the original. Supply voltage range (2V to 5.5V) has a higher minimum than the original. Slew rate (1.1V/µs) and gain bandwidth product (2 MHz) provide moderate performance improvement. Active status and RoHS3 compliant.
NCV20034DR2G (onsemi): General purpose 4-circuit amplifier with rail-to-rail output in 14-SOIC packaging. Operating temperature range (-40°C to 125°C) matches the original. Supply voltage range (1.7V to 5.5V) is compatible with the original specification. Slew rate (8V/µs) and gain bandwidth product (7 MHz) are significantly higher. Output current per channel (96 mA) exceeds the original (30 mA). Active status and RoHS3 compliant.
NCS20034DR2G (onsemi): General purpose 4-circuit amplifier with rail-to-rail output in 14-SOIC packaging. Supply voltage range (1.7V to 5.5V) is compatible with the original. Slew rate (8V/µs) and gain bandwidth product (7 MHz) are significantly higher. Operating temperature specification is not provided in the data. Output current per channel (8 mA) is lower than the original. Active status and RoHS3 compliant.

Functional Equivalents (14-SOP 4.40mm Package):

The following parts have different package dimensions (14-SOP with 4.40mm width vs. 14-SOIC with 3.90mm width) and require PCB layout modification. These are suitable when package footprint change is acceptable:

BU7244F-E2 (Rohm Semiconductor): CMOS 4-circuit amplifier with rail-to-rail output. Operating temperature range (-40°C to 85°C) is narrower than the original; applications requiring operation above 85°C are not suitable. Supply voltage range (1.8V to 5.5V) is compatible. Slew rate (0.4V/µs) and gain bandwidth product (900 kHz) provide moderate performance improvement. Active status and RoHS3 compliant.
BU7487F-E2 (Rohm Semiconductor): CMOS 4-circuit amplifier with rail-to-rail output. Supply voltage minimum is 3V, which is significantly higher than the original 1.6V; applications requiring operation below 3V are not suitable. Operating temperature range (-40°C to 105°C) is narrower than the original. Slew rate (10V/µs) and gain bandwidth product (10 MHz) are significantly higher, supporting high-frequency applications. Active status and RoHS3 compliant.
LMR934F-GE2 (Rohm Semiconductor): General purpose 4-circuit amplifier with rail-to-rail output. Operating temperature range (-40°C to 85°C) is narrower than the original. Supply voltage range (1.8V to 5V) has a higher minimum and lower maximum than the original. Slew rate (0.35V/µs) and gain bandwidth product (1.4 MHz) provide moderate performance improvement. Output current per channel (90 mA) exceeds the original. Active status and RoHS3 compliant.

Selection Criteria Summary:

All substitute parts listed are Active product status and RoHS3 compliant, meeting regulatory and supply chain requirements. Direct pin-compatible substitutes in 14-SOIC packaging (MCP6424T-E/SL, MCP6424-E/SL, MCP6494-E/SL, MCP6474-E/SL, NCV20034DR2G, NCS20034DR2G) are preferred when PCB layout modification is not feasible. Functional equivalents in 14-SOP packaging (BU7244F-E2, BU7487F-E2, LMR934F-GE2) are suitable when layout redesign is acceptable and performance requirements align with the specified electrical parameters.

Frequently Asked Questions (FAQ)

Q1: Can I use MCP6424T-E/SL as a direct replacement for LMP2234BMAE/NOPB without PCB modification?

A: Yes. Both parts use the 14-SOIC package with 3.90mm width, identical pinout, and surface mount technology. No PCB layout changes are required. Both are Active status, RoHS3 compliant, and support the full -40°C to 125°C operating temperature range. Verify that your application can tolerate the lower supply current (4.4µA vs. 36µA) and comparable slew rate (0.05V/µs vs. 0.048V/µs).

Q2: What is the difference between MCP6424-E/SL and MCP6424T-E/SL?

A: Both parts are electrically identical general purpose 4-circuit amplifiers in 14-SOIC packaging with identical electrical specifications. The primary difference is packaging format: MCP6424-E/SL is supplied in Tube packaging, while MCP6424T-E/SL is supplied in Cut Tape (CT) & Digi-Reel® format. Select based on your procurement and assembly requirements.

Q3: Why do some substitute parts have different package widths (4.40mm vs. 3.90mm)?

A: The 14-SOIC and 14-SOP package families have different standardized body widths. While both are 14-pin surface mount packages with the same pinout, the 4.40mm width requires a different PCB footprint. Parts with 4.40mm width (BU7244F-E2, BU7487F-E2, LMR934F-GE2) are functional equivalents but require PCB layout redesign for compatibility.

Q4: Can I use NCV20034DR2G in applications requiring operation below 1.7V?

A: No. NCV20034DR2G has a minimum supply voltage of 1.7V, while the original LMP2234BMAE/NOPB operates at 1.6V minimum. Applications requiring operation at 1.6V must use the original part or substitutes with 1.6V or lower minimum supply voltage (MCP6424T-E/SL, MCP6424-E/SL, or MCP6474-E/SL with 1.8V minimum are also not suitable; only the original part meets 1.6V).

Q5: Which substitute offers the highest slew rate and gain bandwidth product?

A: BU7487F-E2 offers the highest slew rate (10V/µs) and gain bandwidth product (10 MHz) among all listed substitutes. However, this part has a 3V minimum supply voltage and -40°C to 105°C operating temperature range, which may not be compatible with all applications. For 14-SOIC package compatibility, NCV20034DR2G offers 8V/µs slew rate and 7 MHz gain bandwidth product.

Q6: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this document are RoHS3 compliant and have MSL rating of 1 (Unlimited), matching the original part's environmental and regulatory status.

Q7: What is the difference between general purpose and CMOS amplifier types?

A: General purpose amplifiers (LMP2234BMAE/NOPB, MCP6424T-E/SL, MCP6494-E/SL, NCV20034DR2G, NCS20034DR2G, LMR934F-GE2) are designed for broad application ranges with balanced performance characteristics. CMOS amplifiers (BU7244F-E2, BU7487F-E2, MCP6474-E/SL) typically feature lower input bias current and lower power consumption but may have different offset voltage and temperature drift characteristics. Select based on your specific application requirements.

Q8: Can I use BU7487F-E2 in a 1.6V supply application?

A: No. BU7487F-E2 has a minimum supply voltage of 3V, which is significantly higher than the original part's 1.6V minimum. This part is suitable only for applications with 3V or higher supply voltage.

Q9: Which substitute has the lowest supply current consumption?

A: MCP6424T-E/SL and MCP6424-E/SL both have the lowest supply current at 4.4µA (x4 Channels), compared to the original part's 36µA. These are ideal for battery-powered or ultra-low-power applications.

Q10: Do all substitute parts support the full -40°C to 125°C operating temperature range?

A: No. MCP6424T-E/SL, MCP6424-E/SL, MCP6494-E/SL, MCP6474-E/SL, and NCV20034DR2G support -40°C to 125°C. BU7244F-E2 and LMR934F-GE2 support -40°C to 85°C (narrower range). BU7487F-E2 supports -40°C to 105°C. NCS20034DR2G does not specify operating temperature. Verify temperature range compatibility with your application requirements.

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