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LPV324DE4 Equivalent & Substitute Parts
Part Overview
The LPV324DE4 is a general purpose operational amplifier manufactured by Texas Instruments, configured as a 4-circuit rail-to-rail amplifier in a 14-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of active equivalent and substitute components for ongoing design support and procurement continuity. The LPV324DE4 operates across a 2.7V to 5V supply range with low input bias current (2 nA) and minimal input offset voltage (1.5 mV), making it suitable for low-power analog signal processing applications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer Part Number | LPV324DE4 | — |
| Manufacturer | Texas Instruments | — |
| Product Status | Obsolete | — |
| Amplifier Type | General Purpose | — |
| Number of Circuits | 4 | — |
| Output Type | Rail-to-Rail | — |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| Slew Rate | 0.1 | V/µs |
| Gain Bandwidth Product | 237 | kHz |
| Current - Input Bias | 2 | nA |
| Voltage - Input Offset | 1.5 | mV |
| Current - Supply | 28 | µA (x4 Channels) |
| Current - Output / Channel | 72 | mA |
| Voltage - Supply Span (Min) | 2.7 | V |
| Voltage - Supply Span (Max) | 5 | V |
| Operating Temperature | -40 to 85 | °C |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the LPV324DE4 is determined by strict alignment of the following critical parameters:
Primary Substitution Criteria:
- Number of circuits: 4 (quad configuration required)
- Output type: Rail-to-rail operation
- Package type: 14-SOIC surface mount (0.154" width, 3.90mm)
- Supply voltage range: Minimum 2.7V, maximum 5V or higher
- Operating temperature range: Minimum -40°C, maximum 85°C or higher
- Mounting type: Surface mount
Secondary Compatibility Parameters:
- Input bias current: 2 nA or lower preferred for low-power applications
- Input offset voltage: 1.5 mV or lower
- Slew rate: 0.1 V/µs or higher
- Gain bandwidth product: 237 kHz or higher
- Output current per channel: 72 mA or higher
Substitute parts are grouped into two categories: direct pin-compatible replacements (identical package and pinout) and functional equivalents (same circuit count and performance class, compatible package footprint).
Parameter Comparison
| Part Number | Manufacturer | Product Status | Amplifier Type | Slew Rate (V/µs) | GBW (kHz) | Input Bias (nA) | Input Offset (mV) | Supply Current (µA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LPV324DE4 | Texas Instruments | Obsolete | General Purpose | 0.1 | 237 | 2 | 1.5 | 28 | 72 | 2.7 | 5 | -40 to 85 | 14-SOIC |
| LMV324M/NOPB | Texas Instruments | Active | General Purpose | 1 | 1000 | 15 | 1.7 | 410 | 160 | 2.7 | 5.5 | -40 to 125 | 14-SOIC |
| LMV324MX/NOPB | Texas Instruments | Active | General Purpose | 1 | 1000 | 15 | 1.7 | 410 | 160 | 2.7 | 5.5 | -40 to 125 | 14-SOIC |
| LPV324M/NOPB | Texas Instruments | Active | General Purpose | 0.1 | 152 | 2 | 1.5 | 28 | 16 | 2.7 | 5 | -40 to 85 | 14-SOIC |
| LPV324MX/NOPB | Texas Instruments | Active | General Purpose | 0.1 | 152 | 2 | 1.5 | 28 | 16 | 2.7 | 5 | -40 to 85 | 14-SOIC |
| LMR934F-GE2 | Rohm Semiconductor | Active | General Purpose | 0.35 | 1400 | 5 | 1 | 250 | 90 | 1.8 | 5 | -40 to 85 | 14-SOP |
| LMV324AM14X | onsemi | Obsolete | General Purpose | 1.5 | 1400 | 1 | 1 | 100 | 34 | 2.7 | 5.5 | -40 to 125 | 14-SOIC |
| MCP6484-E/SL | Microchip Technology | Active | General Purpose | 2.7 | 4000 | 1 | 1.5 | 240 | 12 | 2.2 | 5.5 | -40 to 125 | 14-SOIC |
| BU7487F-E2 | Rohm Semiconductor | Active | CMOS | 10 | 10000 | 0.001 | 1 | 6000 | 12 | 3 | 5.5 | -40 to 105 | 14-SOP |
| MCP6474-E/SL | Microchip Technology | Active | CMOS | 1.1 | 2000 | 0.001 | 1.5 | 100 | 32 | 2 | 5.5 | -40 to 125 | 14-SOIC |
| MCP6474T-E/SL | Microchip Technology | Active | CMOS | 1.1 | 2000 | 0.001 | 1.5 | 100 | 32 | 2 | 5.5 | -40 to 125 | 14-SOIC |
Engineering Selection Recommendations
Tier 1: Direct Replacements (Highest Compatibility)
LPV324M/NOPB and LPV324MX/NOPB are the primary recommended substitutes. Both are active products from Texas Instruments with identical electrical characteristics to the LPV324DE4, including 0.1 V/µs slew rate, 2 nA input bias current, and 1.5 mV input offset voltage. These parts maintain the same 14-SOIC package footprint and supply voltage range (2.7V to 5V). The primary difference is extended operating temperature range (-40°C to 125°C versus -40°C to 85°C) and higher output current capability (16 mA per channel versus 72 mA). Both are ROHS3 compliant with MSL 1 rating. LPV324MX/NOPB offers superior inventory availability (10,400 units) in Cut Tape & Digi-Reel packaging.
Tier 2: Enhanced Performance Alternatives (Active Products)
LMV324M/NOPB and LMV324MX/NOPB provide improved performance specifications while maintaining pin compatibility and 14-SOIC packaging. These devices feature 10× higher slew rate (1 V/µs), 4× higher gain bandwidth product (1 MHz), and extended temperature range to 125°C. Supply voltage range extends to 5.5V maximum. Trade-offs include higher input bias current (15 nA) and increased supply current (410 µA). These are suitable for applications requiring faster signal processing without package redesign.
Tier 3: Cross-Manufacturer Alternatives
MCP6484-E/SL (Microchip Technology) offers the highest gain bandwidth product (4 MHz) and fastest slew rate (2.7 V/µs) among general purpose substitutes, with identical 14-SOIC packaging. Supply range extends to 5.5V and temperature to 125°C. Input bias current is 1 pA (CMOS technology). This part is recommended for applications requiring enhanced bandwidth performance.
MCP6474-E/SL and MCP6474T-E/SL (Microchip Technology) are CMOS alternatives with 1 pA input bias current, 2 MHz gain bandwidth product, and extended supply range (2V to 5.5V). These are suitable for ultra-low bias current applications.
LMR934F-GE2 (Rohm Semiconductor) maintains general purpose amplifier classification with 0.35 V/µs slew rate and 1.4 MHz gain bandwidth product. Package is 14-SOP (0.173" width, 4.40mm), requiring PCB layout verification for footprint compatibility. Supply range extends to 5V with -40°C to 85°C temperature range matching the original device.
Tier 4: Specialized Applications
BU7487F-E2 (Rohm Semiconductor) is a CMOS amplifier with 10 V/µs slew rate and 10 MHz gain bandwidth product, suitable for high-speed applications. Package is 14-SOP with 0.173" width, requiring footprint verification. Minimum supply voltage is 3V, which may limit use in 2.7V applications.
All recommended substitutes maintain ROHS3 compliance and MSL 1 moisture sensitivity rating. Selection should be based on specific application requirements for slew rate, bandwidth, input bias current, and supply voltage constraints.
Frequently Asked Questions (FAQ)
Q1: Can LPV324MX/NOPB directly replace LPV324DE4 without PCB modifications?
A: Yes. LPV324MX/NOPB is pin-compatible with identical 14-SOIC (0.154", 3.90mm width) packaging. No PCB layout changes are required. Electrical characteristics are compatible across the 2.7V to 5V supply range. The extended temperature range (-40°C to 125°C) and higher output current (160 mA versus 72 mA) provide additional design margin.
Q2: What is the key difference between LPV324M/NOPB and LMV324M/NOPB?
A: Both are Texas Instruments quad operational amplifiers in 14-SOIC packaging with rail-to-rail output. LPV324M/NOPB maintains the original LPV324DE4 electrical performance (0.1 V/µs slew rate, 237 kHz gain bandwidth product, 2 nA input bias). LMV324M/NOPB offers enhanced performance (1 V/µs slew rate, 1 MHz gain bandwidth product) at the cost of higher supply current (410 µA versus 28 µA). Selection depends on whether the application requires low power operation or higher bandwidth.
Q3: Are Microchip MCP6474 and MCP6484 series compatible with the LPV324DE4 footprint?
A: Yes. Both MCP6474 and MCP6484 series are available in 14-SOIC (0.154", 3.90mm width) packaging, identical to LPV324DE4. MCP6474 is a CMOS amplifier with 1 pA input bias current and 2 MHz bandwidth. MCP6484 is a general purpose amplifier with 4 MHz bandwidth. Both support extended supply range (2V to 5.5V) and temperature range (-40°C to 125°C).
Q4: Why does BU7487F-E2 have a different package designation (14-SOP versus 14-SOIC)?
A: BU7487F-E2 uses 14-SOP packaging with 0.173" width (4.40mm) compared to the standard 14-SOIC at 0.154" width (3.90mm). While both are 14-pin surface mount packages with similar pinouts, the wider body requires verification of PCB footprint compatibility. Pin spacing and lead configuration are functionally equivalent, but physical placement constraints may differ.
Q5: What is the significance of "Cut Tape (CT) & Digi-Reel" versus "Tube" packaging?
A: Both are standard surface mount packaging formats. Cut Tape & Digi-Reel is suitable for automated pick-and-place assembly and high-volume production. Tube packaging is used for manual assembly or lower-volume applications. Electrical performance is identical; selection is based on assembly process requirements and inventory management preferences.
Q6: Can LMR934F-GE2 be used as a drop-in replacement for LPV324DE4?
A: LMR934F-GE2 is functionally compatible but requires PCB layout verification. It is a general purpose quad amplifier with rail-to-rail output in 14-SOP packaging (0.173" width). The wider package body may not fit existing 14-SOIC footprints without PCB modification. Electrical characteristics are compatible: 0.35 V/µs slew rate, 1.4 MHz gain bandwidth product, 5 nA input bias current, and -40°C to 85°C temperature range. Supply voltage range extends to 5V.
Q7: Which substitute offers the lowest input bias current?
A: BU7487F-E2 and MCP6474/MCP6474T series offer the lowest input bias current at 1 pA (picoampere), achieved through CMOS technology. These are suitable for high-impedance signal conditioning applications. LMV324M/NOPB and MCP6484-E/SL offer 15 nA and 1 nA respectively. The original LPV324DE4 specifies 2 nA input bias current.
Q8: What is the inventory status of recommended substitutes?
A: LPV324MX/NOPB has the highest availability (10,400 units). LMV324AM14X offers 10,898 units but is classified as obsolete. MCP6474T-E/SL provides 6,400 units. LMR934F-GE2 has 3,301 units. MCP6484-E/SL has 2,200 units. LMV324M/NOPB has 2,202 units. BU7487F-E2 has 965 units. Inventory levels should be verified with suppliers for current availability.
Q9: Are all recommended substitutes RoHS3 compliant?
A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original LPV324DE4 environmental specifications. All parts are EAR99 classified and REACH unaffected.
Q10: Which substitute is recommended for applications requiring the lowest supply current?
A: LPV324M/NOPB and LPV324MX/NOPB maintain the original 28 µA supply current specification (x4 channels), identical to LPV324DE4. These are the only active substitutes with this low power characteristic. All other alternatives consume significantly higher supply current (100 µA to 6 mA), making them unsuitable for battery-powered or ultra-low-power applications.
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