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LMV934IPWG4 Equivalent & Substitute Parts
Part Overview
The LMV934IPWG4 is a general-purpose operational amplifier manufactured by Texas Instruments, featuring four independent circuits in a 14-TSSOP surface-mount package. This device is classified as obsolete, which necessitates identification of active equivalent and substitute components for ongoing design requirements and production continuity. The LMV934IPWG4 operates across a 1.8V to 5V supply range with rail-to-rail output capability, making it suitable for low-voltage analog signal processing applications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer Part Number | LMV934IPWG4 | — |
| 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) | — |
| Slew Rate | 0.42 | V/µs |
| Gain Bandwidth Product | 1.5 | MHz |
| Current - Input Bias | 15 | nA |
| Voltage - Input Offset | 1 | mV |
| Current - Supply (x4 Channels) | 116 | µA |
| Current - Output / Channel | 100 | mA |
| Voltage - Supply Span (Min) | 1.8 | V |
| Voltage - Supply Span (Max) | 5 | V |
| Operating Temperature | -40 to 125 | °C |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the LMV934IPWG4 is determined by the following critical parameters: amplifier type (general purpose), number of circuits (4), output type (rail-to-rail), package type (14-TSSOP), and supply voltage range compatibility. Substitute parts are grouped into two categories based on electrical performance alignment:
Category 1: Direct Functional Equivalents — Parts with matching or superior electrical characteristics within the same supply voltage envelope (1.8V to 5V minimum). These include the LMV934MT/NOPB, LMV934MTX/NOPB, and LMR934FVJ-E2, which maintain comparable slew rate, gain bandwidth product, and input bias current specifications.
Category 2: Enhanced Performance Alternatives — Parts with superior electrical performance (higher slew rate, gain bandwidth product, lower input bias current) but compatible package and supply voltage specifications. These include the AD8648ARUZ, AD8648ARUZ-REEL, and LMV324IYPT, which offer improved dynamic performance while maintaining 14-TSSOP packaging and rail-to-rail output capability.
Category 3: Functional Alternatives with Parameter Deviations — Parts that maintain core functionality (4-circuit general-purpose amplifier, rail-to-rail output, 14-TSSOP package) but with notable differences in supply voltage range, operating temperature, or electrical performance. These include BD12734FVJ-E2, BU7487FV-E2, BU7487SFV-E2, and LMR344FVJ-E2.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Amplifier Type | Number of Circuits | Output Type | Package | Slew Rate (V/µs) | GBW (MHz) | Input Bias (nA) | Input Offset (mV) | Supply Min (V) | Supply Max (V) | Temp Range (°C) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LMV934IPWG4 | Texas Instruments | Obsolete | General Purpose | 4 | Rail-to-Rail | 14-TSSOP | 0.42 | 1.5 | 15 | 1 | 1.8 | 5 | -40 to 125 |
| LMV934MT/NOPB | National Semiconductor | Active | General Purpose | 4 | Rail-to-Rail | 14-TSSOP | 0.42 | 1.5 | 14 | 1 | 1.8 | 5.5 | -40 to 125 |
| LMV934MTX/NOPB | National Semiconductor | Active | General Purpose | 4 | Rail-to-Rail | 14-TSSOP | 0.42 | 1.5 | 14 | 1 | 1.8 | 5.5 | -40 to 125 |
| AD8648ARUZ | Analog Devices Inc. | Active | General Purpose | 4 | Rail-to-Rail | 14-TSSOP | 11 | 24 | 0.0003 | 0.6 | 2.7 | 5.5 | -40 to 125 |
| AD8648ARUZ-REEL | Analog Devices Inc. | Active | General Purpose | 4 | Rail-to-Rail | 14-TSSOP | 11 | 24 | 0.0003 | 0.6 | 2.7 | 5.5 | -40 to 125 |
| BD12734FVJ-E2 | Rohm Semiconductor | Active | General Purpose | 4 | Rail-to-Rail | 14-TSSOP | 0.4 | 1 | 50 | 1 | 1.8 | 5 | -40 to 85 |
| BU7487FV-E2 | Rohm Semiconductor | Active | CMOS | 4 | Rail-to-Rail | 14-LSSOP | 10 | 10 | 0.001 | 1 | 3 | 5.5 | -40 to 105 |
| BU7487SFV-E2 | Rohm Semiconductor | Active | CMOS | 4 | Rail-to-Rail | 14-LSSOP | 10 | 10 | 0.001 | 1 | 3 | 5.5 | -40 to 105 |
| LMR344FVJ-E2 | Rohm Semiconductor | Active | CMOS | 4 | Rail-to-Rail | 14-TSSOP | 1 | 2 | 0.001 | 0.25 | 2.7 | 5.5 | -40 to 85 |
| LMR934FVJ-E2 | Rohm Semiconductor | Active | General Purpose | 4 | Rail-to-Rail | 14-TSSOP | 0.35 | 1.4 | 5 | 1 | 1.8 | 5 | -40 to 85 |
| LMV324IYPT | STMicroelectronics | Active | General Purpose | 4 | Rail-to-Rail | 14-TSSOP | 0.45 | 1.3 | 16 | 0.1 | 2.7 | 6 | -40 to 125 |
Engineering Selection Recommendations
For Direct Replacement with Active Product Status:
The LMV934MT/NOPB and LMV934MTX/NOPB (National Semiconductor) are the primary recommended substitutes. Both parts maintain identical electrical specifications to the LMV934IPWG4 with the exception of marginally improved maximum supply voltage (5.5V versus 5V) and lower input bias current (14 nA versus 15 nA). Both are active products with AEC-Q100 automotive qualification, ensuring long-term availability and supply chain stability. The LMV934MTX/NOPB variant offers significantly higher inventory availability (17,700 units in stock).
For Enhanced Performance Applications:
The AD8648ARUZ and AD8648ARUZ-REEL (Analog Devices Inc.) provide substantially improved electrical performance with 11V/µs slew rate, 24 MHz gain bandwidth product, and exceptionally low input bias current (0.3 pA). These devices are suitable for applications requiring faster signal processing and lower noise characteristics. Both variants are active products with ROHS3 compliance and unlimited moisture sensitivity rating. The AD8648ARUZ-REEL variant is supplied on cut tape and Digi-Reel for automated assembly.
For Low-Voltage Supply Applications:
The LMV324IYPT (STMicroelectronics) extends the maximum supply voltage to 6V while maintaining comparable electrical performance to the original part. This device carries AEC-Q100 automotive qualification and operates across the full -40°C to 125°C temperature range. Input offset voltage is reduced to 100 µV, and output current per channel is increased to 160 mA.
For Temperature-Constrained Applications:
The LMR934FVJ-E2 (Rohm Semiconductor) operates within a -40°C to 85°C temperature range with comparable electrical specifications. This device features lower input bias current (5 nA) and maintains the 1.8V to 5V supply voltage range. Operating temperature limitation should be evaluated against application requirements.
For CMOS Technology Requirements:
The BU7487FV-E2 and BU7487SFV-E2 (Rohm Semiconductor) provide CMOS amplifier technology with 10V/µs slew rate and 10 MHz gain bandwidth product. These devices require a minimum supply voltage of 3V and are not suitable for 1.8V applications. The LMR344FVJ-E2 (Rohm Semiconductor) offers CMOS technology with extended supply range (2.7V to 5.5V) and improved input offset voltage (250 µV).
Compliance and Certification Considerations:
All recommended substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Parts designated with AEC-Q100 qualification (LMV934MT/NOPB, LMV934MTX/NOPB, LMV324IYPT) are suitable for automotive applications. All parts carry EAR99 export classification and are REACH unaffected.
Frequently Asked Questions (FAQ)
Q: Can the LMV934IPWG4 be directly replaced with the LMV934MT/NOPB?
A: Yes. The LMV934MT/NOPB is a direct functional equivalent with identical electrical specifications and 14-TSSOP packaging. The primary difference is product status (active versus obsolete) and marginally improved maximum supply voltage (5.5V versus 5V). Both devices operate across -40°C to 125°C and maintain rail-to-rail output capability with four independent circuits.
Q: What is the key difference between the LMV934MTX/NOPB and LMV934MT/NOPB?
A: Both parts are electrically identical. The primary distinction is packaging format: LMV934MT/NOPB is supplied in bulk packaging, while LMV934MTX/NOPB is supplied in standard packaging. The LMV934MTX/NOPB variant has significantly higher inventory availability (17,700 units versus 2,049 units).
Q: Are the AD8648ARUZ variants suitable as drop-in replacements?
A: The AD8648ARUZ variants are functionally compatible but not drop-in replacements. These devices offer substantially enhanced electrical performance (11V/µs slew rate, 24 MHz gain bandwidth product, 0.3 pA input bias current) compared to the LMV934IPWG4 (0.42V/µs, 1.5 MHz, 15 nA). The minimum supply voltage is increased to 2.7V. Applications designed for the LMV934IPWG4 specifications will operate with the AD8648ARUZ, but the enhanced performance characteristics may not be utilized.
Q: Can the LMV934IPWG4 be replaced with a CMOS amplifier such as the BU7487FV-E2?
A: CMOS amplifiers such as the BU7487FV-E2 are functionally compatible but introduce significant parameter differences. The BU7487FV-E2 requires a minimum supply voltage of 3V (incompatible with 1.8V applications), features higher slew rate (10V/µs) and gain bandwidth product (10 MHz), and exhibits extremely low input bias current (1 pA). Package type differs (14-LSSOP versus 14-TSSOP). Substitution requires circuit evaluation to confirm compatibility with the 3V minimum supply requirement.
Q: What is the significance of the 14-TSSOP versus 14-LSSOP package designation?
A: Both packages are surface-mount configurations with identical 0.173" width and 4.40mm body width. The TSSOP designation indicates thin shrink small outline package, while LSSOP indicates low-profile shrink small outline package. These packages are mechanically compatible on standard PCB layouts, though component height may differ slightly. Verify PCB clearance requirements for specific applications.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All substitute parts listed in this reference maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). All parts carry EAR99 export classification and are REACH unaffected, ensuring regulatory compliance across global markets.
Q: Which substitute part offers the best long-term availability?
A: The LMV934MTX/NOPB (National Semiconductor) offers the highest current inventory (17,700 units in stock) and active product status with AEC-Q100 automotive qualification. This combination ensures sustained availability and supply chain stability for ongoing production requirements.
Q: Can the LMV324IYPT be used in applications requiring 1.8V supply operation?
A: No. The LMV324IYPT has a minimum supply voltage of 2.7V and is not suitable for 1.8V applications. For 1.8V operation, the LMV934MT/NOPB, LMV934MTX/NOPB, BD12734FVJ-E2, or LMR934FVJ-E2 are appropriate selections.
Q: What is the operating temperature range limitation for the LMR934FVJ-E2?
A: The LMR934FVJ-E2 operates across -40°C to 85°C, which is narrower than the LMV934IPWG4 range of -40°C to 125°C. Applications requiring operation above 85°C must select alternative parts such as the LMV934MT/NOPB, LMV934MTX/NOPB, AD8648ARUZ, or LMV324IYPT, which all support -40°C to 125°C operation.
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