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LMP2234AMT/NOPB Equivalent & Substitute Parts
Part Overview
The LMP2234AMT/NOPB is a general purpose operational amplifier manufactured by Texas Instruments, configured as a 4-circuit differential, rail-to-rail output device in a 14-TSSOP surface mount package. This IC is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).
Substitute parts are identified when equivalent functional performance can be achieved within the allowed electrical and mechanical parameters of the 4-circuit operational amplifier category. Substitution becomes necessary due to inventory availability, supply chain optimization, or design flexibility requirements while maintaining circuit compatibility.
Substiute Parts
Key Parameters
| Parameter | LMP2234AMT/NOPB | Unit |
|---|---|---|
| Manufacturer | Texas Instruments | — |
| Number of Circuits | 4 | Circuits |
| Amplifier Type | General Purpose | — |
| Output Type | Differential, Rail-to-Rail | — |
| Package / Case | 14-TSSOP (0.173", 4.40mm 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 | — |
| Product Status | Active | — |
Substitute Part Grouping Explanation
Substitute parts for the LMP2234AMT/NOPB are identified based on the following critical parameters that define functional equivalence within the 4-circuit operational amplifier category:
Primary Substitution Criteria:
- Number of Circuits: 4 (mandatory)
- Package / Case: 14-TSSOP form factor (mandatory for PCB compatibility)
- Mounting Type: Surface Mount (mandatory)
- Output Type: Rail-to-Rail configuration (mandatory)
- Voltage Supply Range: Overlap with 1.6V to 5.5V span (required for circuit operation)
- Operating Temperature Range: Support for -40°C to 125°C or subset thereof (application dependent)
- RoHS3 Compliance: Required for regulatory alignment
- Product Status: Active (current manufacturing status)
Secondary Performance Parameters: Slew Rate, Gain Bandwidth Product, Input Bias Current, Input Offset Voltage, Supply Current, and Output Current per Channel are provided for performance comparison but do not disqualify substitution when primary criteria are met. These parameters define performance characteristics within specific application contexts.
Substitute parts are grouped into two categories: General Purpose Amplifiers (matching LMP2234 functional classification) and CMOS Amplifiers (alternative topology with equivalent 4-circuit, 14-TSSOP configuration).
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Slew Rate (V/µs) | GBW (kHz) | Input Bias (pA) | Input Offset (µV) | Supply Current (µA) | Output Current (mA) | Temp Range (°C) | Supply Min (V) | Supply Max (V) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| LMP2234AMT/NOPB | Texas Instruments | General Purpose | 0.048 | 130 | 0.02 | 10 | 36 | 30 | -40 to 125 | 1.6 | 5.5 |
| MCP6424T-E/ST | Microchip Technology | General Purpose | 0.05 | 90 | 1 | 1000 | 4.4 | 22 | -40 to 125 | 1.8 | 5.5 |
| MCP6424-E/ST | Microchip Technology | General Purpose | 0.05 | 90 | 1 | 1000 | 4.4 | 22 | -40 to 125 | 1.8 | 5.5 |
| LMV824AIPT | STMicroelectronics | General Purpose | 1.9 | 5500 | 60 | 800 | 300 | 70 | -40 to 125 | 2.5 | 5.5 |
| BD12734FVJ-E2 | Rohm Semiconductor | General Purpose | 0.4 | 1000 | 50 | 1000 | 1200 | 12 | -40 to 85 | 1.8 | 5 |
| LMR934FVJ-E2 | Rohm Semiconductor | General Purpose | 0.35 | 1400 | 5 | 1000 | 250 | 90 | -40 to 85 | 1.8 | 5 |
| MAX4472EUD+ | Analog Devices Inc./Maxim Integrated | General Purpose | 0.002 | 9 | 200 | 500 | 0.75 | 36 | -40 to 85 | 1.8 | 5.5 |
| MCP619-I/ST | Microchip Technology | CMOS | 0.08 | 190 | 5 | 150 | 19 | 17 | -40 to 85 | 2.3 | 5.5 |
| MCP6474-E/ST | Microchip Technology | CMOS | 1.1 | 2000 | 1 | 1500 | 100 | 32 | -40 to 125 | 2 | 5.5 |
| MCP6484-E/ST | Microchip Technology | General Purpose | 2.7 | 4000 | 1 | 1500 | 240 | 12 | -40 to 125 | 2.2 | 5.5 |
| BU7487FV-E2 | Rohm Semiconductor | CMOS | 10 | 10000 | 1 | 1000 | 6000 | 12 | -40 to 105 | 3 | 5.5 |
Engineering Selection Recommendations
General Purpose Amplifier Substitutes (Closest Functional Match):
MCP6424T-E/ST and MCP6424-E/ST (Microchip Technology) provide direct substitution for the LMP2234AMT/NOPB. Both parts maintain identical electrical specifications, 14-TSSOP packaging, surface mount configuration, and extended temperature range (-40°C to 125°C). These parts are Active status with RoHS3 compliance. The primary difference is packaging format: MCP6424T-E/ST is supplied in Tape & Reel format, while MCP6424-E/ST is supplied in Tube format.
LMV824AIPT (STMicroelectronics) is suitable for applications requiring extended performance characteristics. This part maintains the -40°C to 125°C operating range and 14-TSSOP package. It includes AEC-Q100 automotive qualification, which may be required for automotive applications. Supply voltage minimum is 2.5V (versus 1.6V for LMP2234), which must be verified for low-voltage circuit compatibility.
BD12734FVJ-E2 and LMR934FVJ-E2 (Rohm Semiconductor) are General Purpose substitutes with 14-TSSOP packaging and Active product status. Both operate at reduced maximum temperature (85°C versus 125°C) and reduced maximum supply voltage (5V versus 5.5V). These constraints must be evaluated against application requirements.
MAX4472EUD+ (Analog Devices Inc./Maxim Integrated) is a low-power alternative with ultra-low supply current (0.75µA total). Operating temperature is limited to -40°C to 85°C. This part is suitable only for applications where the reduced temperature range is acceptable.
CMOS Amplifier Alternatives (Different Topology):
MCP619-I/ST, MCP6474-E/ST, MCP6484-E/ST (Microchip Technology), and BU7487FV-E2 (Rohm Semiconductor) are CMOS topology alternatives. These parts maintain 4-circuit configuration and 14-TSSOP packaging but employ CMOS architecture rather than general purpose topology. CMOS devices typically offer lower input bias current and different performance trade-offs. MCP6474-E/ST and MCP6484-E/ST support the full -40°C to 125°C temperature range. BU7487FV-E2 requires minimum 3V supply voltage, which may limit low-voltage applications.
Compliance and Regulatory Status:
All substitute parts listed maintain RoHS3 compliance, REACH unaffected status, and EAR99 ECCN classification, matching the regulatory profile of the LMP2234AMT/NOPB. All parts are classified as Active product status, ensuring continued manufacturing and supply availability.
Frequently Asked Questions (FAQ)
Q: Can MCP6424T-E/ST directly replace LMP2234AMT/NOPB without circuit modification?
A: Yes. MCP6424T-E/ST maintains identical electrical specifications, 14-TSSOP package, surface mount configuration, and -40°C to 125°C operating range. Pin-to-pin compatibility is confirmed. The only difference is packaging format (Tape & Reel versus tube).
Q: What is the difference between MCP6424T-E/ST and MCP6424-E/ST?
A: Both parts are electrically identical. MCP6424T-E/ST is supplied in Tape & Reel (TR) format for automated assembly. MCP6424-E/ST is supplied in Tube format for manual handling. Select based on assembly process requirements.
Q: Can LMV824AIPT be used in circuits designed for 1.6V minimum supply voltage?
A: No. LMV824AIPT requires minimum 2.5V supply voltage. Circuits designed for 1.6V operation must use parts supporting this lower voltage threshold, such as MCP6424T-E/ST or LMP2234AMT/NOPB.
Q: Are CMOS alternatives (MCP6474-E/ST, MCP6484-E/ST) suitable for all LMP2234 applications?
A: CMOS alternatives differ in topology and performance characteristics. They are suitable only when application requirements align with CMOS specifications. Verify slew rate, gain bandwidth product, input offset voltage, and supply current compatibility before substitution. CMOS devices typically offer lower input bias current but may have different frequency response characteristics.
Q: What is the maximum operating temperature for BD12734FVJ-E2 and LMR934FVJ-E2?
A: Both Rohm Semiconductor parts operate to maximum 85°C. Applications requiring 125°C operation must use parts with extended temperature range, such as MCP6424T-E/ST, LMV824AIPT, MCP6474-E/ST, or MCP6484-E/ST.
Q: Does BU7487FV-E2 require higher minimum supply voltage than LMP2234AMT/NOPB?
A: Yes. BU7487FV-E2 requires minimum 3V supply voltage, compared to 1.6V for LMP2234AMT/NOPB. This part is unsuitable for circuits operating below 3V.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts listed maintain RoHS3 compliance and REACH unaffected status, matching the regulatory profile of LMP2234AMT/NOPB.
Q: What packaging formats are available for substitute parts?
A: All substitute parts are supplied in 14-TSSOP surface mount package. Packaging format options vary: Tape & Reel (TR), Tube, or Cut Tape (CT) & Digi-Reel®. Select based on assembly process and volume requirements.
Q: Can MAX4472EUD+ be used for applications requiring extended temperature operation?
A: No. MAX4472EUD+ operates to maximum 85°C. Applications requiring -40°C to 125°C operation must use parts with extended temperature range such as MCP6424T-E/ST, LMV824AIPT, MCP6474-E/ST, or MCP6484-E/ST.
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