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LPV324IPWG4 Equivalent & Substitute Parts
Part Overview
The LPV324IPWG4 is a general purpose operational amplifier manufactured by Texas Instruments, configured as a 4-circuit rail-to-rail device in a 14-TSSOP surface mount package. This part is classified as obsolete, which necessitates identification of active equivalent and substitute components for ongoing design support and procurement continuity. The LPV324IPWG4 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 conditioning applications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer Part Number | LPV324IPWG4 | — |
| Manufacturer | Texas Instruments | — |
| Product Status | Obsolete | — |
| Amplifier Type | General Purpose | — |
| Number of Circuits | 4 | — |
| Output Type | Rail-to-Rail | — |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) | — |
| Mounting Type | Surface Mount | — |
| Voltage - Supply Span (Min) | 2.7 | V |
| Voltage - Supply Span (Max) | 5 | V |
| Operating Temperature | -40°C ~ 125°C | — |
| 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 |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the LPV324IPWG4 is determined by the following critical parameters:
Primary Compatibility Criteria:
- Number of circuits: 4 independent amplifier channels
- Output type: Rail-to-rail configuration
- Package type: 14-TSSOP surface mount form factor
- Supply voltage range: Minimum 2.7V, maximum 5V overlap required
- Operating temperature range: -40°C minimum, 125°C maximum preferred
- Mounting type: Surface mount
Secondary Performance Criteria:
- Slew rate: 0.1V/µs or higher
- Gain bandwidth product: 237 kHz or higher
- Input bias current: 2 nA or lower
- Input offset voltage: 1.5 mV or lower
- Output current per channel: 72 mA or higher
Substitute parts are grouped into two categories:
Category A - Direct Replacements (Texas Instruments LMV324 Series): Parts LMV324MT/NOPB, LMV324MTX/NOPB, LPV324MT/NOPB, and LPV324MTX/NOPB maintain identical package geometry and pinout compatibility. These parts are active products with enhanced or equivalent electrical performance characteristics.
Category B - Functional Equivalents (Alternative Manufacturers): Parts BD12734FVJ-E2, BU7487FV-E2, BU7487SFV-E2, LMR344FVJ-E2, LMR934FVJ-E2, and MCP6474-E/ST provide 4-circuit rail-to-rail amplification in compatible 14-TSSOP or equivalent packages with supply voltage ranges overlapping the original specification.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Amplifier Type | Slew Rate (V/µs) | GBW (kHz) | Input Bias (nA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Output Current (mA) |
|---|---|---|---|---|---|---|---|---|---|---|
| LPV324IPWG4 | Texas Instruments | Obsolete | General Purpose | 0.1 | 237 | 2 | 2.7 | 5 | -40 ~ 125 | 72 |
| LMV324MT/NOPB | Texas Instruments | Active | General Purpose | 1 | 1000 | 15 | 2.7 | 5.5 | -40 ~ 125 | 160 |
| LMV324MTX/NOPB | Texas Instruments | Active | General Purpose | 1 | 1000 | 15 | 2.7 | 5.5 | -40 ~ 125 | 160 |
| LPV324MT/NOPB | Texas Instruments | Active | General Purpose | 0.1 | 152 | 2 | 2.7 | 5 | -40 ~ 85 | 16 |
| LPV324MTX/NOPB | Texas Instruments | Active | General Purpose | 0.1 | 152 | 2 | 2.7 | 5 | -40 ~ 85 | 16 |
| BD12734FVJ-E2 | Rohm Semiconductor | Active | General Purpose | 0.4 | 1000 | 50 | 1.8 | 5 | -40 ~ 85 | 12 |
| BU7487FV-E2 | Rohm Semiconductor | Active | CMOS | 10 | 10000 | 0.001 | 3 | 5.5 | -40 ~ 105 | 12 |
| BU7487SFV-E2 | Rohm Semiconductor | Active | CMOS | 10 | 10000 | 0.001 | 3 | 5.5 | -40 ~ 105 | 12 |
| LMR344FVJ-E2 | Rohm Semiconductor | Active | CMOS | 1 | 2000 | 0.001 | 2.7 | 5.5 | -40 ~ 85 | 113 |
| LMR934FVJ-E2 | Rohm Semiconductor | Active | General Purpose | 0.35 | 1400 | 5 | 1.8 | 5 | -40 ~ 85 | 90 |
| MCP6474-E/ST | Microchip Technology | Active | CMOS | 1.1 | 2000 | 0.001 | 2 | 5.5 | -40 ~ 125 | 32 |
Engineering Selection Recommendations
For Direct Replacement with Enhanced Performance:
LMV324MT/NOPB and LMV324MTX/NOPB are active Texas Instruments products offering superior electrical performance compared to the obsolete LPV324IPWG4. Both parts maintain identical 14-TSSOP package geometry and pinout compatibility. The LMV324 series provides 10× higher gain bandwidth product (1 MHz vs. 237 kHz), 10× faster slew rate (1V/µs vs. 0.1V/µs), and 2.2× higher output current per channel (160 mA vs. 72 mA). Supply voltage range extends to 5.5V maximum. Operating temperature range matches the original specification (-40°C to 125°C). Both parts are ROHS3 compliant with MSL 1 rating. LMV324MT/NOPB is packaged in Tube; LMV324MTX/NOPB is supplied in Cut Tape & Digi-Reel format.
For Pin-Compatible Replacement with Matched Electrical Characteristics:
LPV324MT/NOPB and LPV324MTX/NOPB are active Texas Instruments products maintaining the LPV324 base product designation. These parts preserve the original electrical characteristics: 0.1V/µs slew rate, 2 nA input bias current, and 1.5 mV input offset voltage. Output current per channel is reduced to 16 mA. Operating temperature range is limited to -40°C to 85°C. LPV324MT/NOPB is packaged in Tube; LPV324MTX/NOPB is supplied in Tape & Reel format with higher inventory availability (10,300 pcs).
For Alternative Manufacturer Solutions:
LMR934FVJ-E2 (Rohm Semiconductor) provides general purpose amplification with 0.35V/µs slew rate and 1.4 MHz gain bandwidth product in 14-TSSOP package. Supply voltage range extends to 1.8V minimum, supporting lower-voltage applications. Output current per channel is 90 mA, exceeding the original specification. Operating temperature range is -40°C to 85°C.
MCP6474-E/ST (Microchip Technology) is a CMOS 4-circuit amplifier with 1.1V/µs slew rate and 2 MHz gain bandwidth product. This part supports the widest supply voltage range (2V to 5.5V) and maintains full operating temperature range (-40°C to 125°C). Input bias current is 1 pA (CMOS technology). Output current per channel is 32 mA.
All recommended substitutes are ROHS3 compliant and REACH unaffected.
Frequently Asked Questions (FAQ)
Q: Can LMV324MT/NOPB directly replace LPV324IPWG4 in existing designs?
A: LMV324MT/NOPB is pin-compatible and package-compatible with LPV324IPWG4 in 14-TSSOP configuration. However, electrical performance differs significantly. The LMV324 series exhibits 10× higher slew rate (1V/µs vs. 0.1V/µs) and 10× higher gain bandwidth product (1 MHz vs. 237 kHz). Designs with frequency-dependent feedback networks or slew-rate-limited applications require circuit verification before substitution. Input bias current increases from 2 nA to 15 nA, which may affect high-impedance input stages.
Q: What is the difference between LPV324MT/NOPB and LMV324MT/NOPB?
A: Both are Texas Instruments 4-circuit rail-to-rail amplifiers in 14-TSSOP packages. LPV324MT/NOPB maintains the original LPV324 electrical characteristics (0.1V/µs slew rate, 237 kHz GBW, 2 nA input bias). LMV324MT/NOPB is an enhanced product with 1V/µs slew rate, 1 MHz GBW, and 15 nA input bias. LPV324MT/NOPB is recommended for designs requiring low slew rate and minimal input bias current. LMV324MT/NOPB is preferred for applications requiring higher bandwidth and faster transient response.
Q: Are BU7487FV-E2 and BU7487SFV-E2 interchangeable?
A: BU7487FV-E2 and BU7487SFV-E2 are electrically identical CMOS 4-circuit amplifiers from Rohm Semiconductor. Both feature 10V/µs slew rate, 10 MHz gain bandwidth product, and 1 pA input bias current. The primary difference is packaging: BU7487FV-E2 is supplied in Cut Tape & Digi-Reel format; BU7487SFV-E2 is also supplied in Cut Tape & Digi-Reel format. Both are compatible with 14-SSOP-B package footprints. Moisture sensitivity level is MSL 1 (unlimited) for both parts.
Q: What is the minimum supply voltage requirement for each substitute?
A: LPV324IPWG4 requires minimum 2.7V. Substitutes with identical 2.7V minimum: LMV324MT/NOPB, LMV324MTX/NOPB, LPV324MT/NOPB, LPV324MTX/NOPB, and LMR344FVJ-E2. LMR934FVJ-E2 supports lower minimum voltage (1.8V). BU7487FV-E2 and BU7487SFV-E2 require minimum 3V. MCP6474-E/ST supports the lowest minimum voltage (2V). For designs operating below 2.7V, only LMR934FVJ-E2 and MCP6474-E/ST are suitable.
Q: Which substitute offers the highest output current per channel?
A: LMV324MT/NOPB and LMV324MTX/NOPB provide 160 mA per channel, the highest among all substitutes. LPV324IPWG4 provides 72 mA per channel. LMR934FVJ-E2 provides 90 mA per channel. MCP6474-E/ST provides 32 mA per channel. For applications requiring maximum output current, LMV324 series is recommended.
Q: Are there packaging format differences between substitute parts?
A: Yes. LMV324MT/NOPB is supplied in Tube packaging. LMV324MTX/NOPB is supplied in Cut Tape & Digi-Reel format. LPV324MT/NOPB is supplied in Tube packaging. LPV324MTX/NOPB is supplied in Tape & Reel format. BD12734FVJ-E2, BU7487FV-E2, BU7487SFV-E2, LMR344FVJ-E2, and LMR934FVJ-E2 are supplied in Cut Tape & Digi-Reel format. MCP6474-E/ST is supplied in Tube packaging. Packaging selection affects handling, storage, and automated assembly compatibility.
Q: What is the operating temperature range limitation for each substitute?
A: LPV324IPWG4 operates -40°C to 125°C. LMV324MT/NOPB and LMV324MTX/NOPB maintain this full range. LPV324MT/NOPB and LPV324MTX/NOPB are limited to -40°C to 85°C. BD12734FVJ-E2, LMR344FVJ-E2, and LMR934FVJ-E2 are limited to -40°C to 85°C. BU7487FV-E2 and BU7487SFV-E2 extend to -40°C to 105°C. MCP6474-E/ST maintains full -40°C to 125°C range. For applications requiring 125°C operation, only LMV324 series and MCP6474-E/ST are suitable.
Q: What is the difference between general purpose and CMOS amplifier types?
A: General purpose amplifiers (LPV324IPWG4, LMV324 series, BD12734FVJ-E2, LMR934FVJ-E2) use bipolar or JFET input stages, providing moderate input bias current (2 nA to 50 nA range) and lower input impedance. CMOS amplifiers (BU7487 series, LMR344FVJ-E2, MCP6474-E/ST) feature CMOS input stages with extremely low input bias current (1 pA) and very high input impedance. CMOS types are preferred for high-impedance signal sources and applications sensitive to input bias current. General purpose types offer lower cost and simpler biasing requirements.
Q: Is RoHS3 compliance maintained across all substitutes?
A: Yes. LPV324IPWG4 and all recommended substitutes are ROHS3 compliant. All parts are also REACH unaffected. Moisture sensitivity level is MSL 1 (unlimited) for all parts except LMV324MTX/NOPB, which is MSL 2 (1 Year).
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