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LMV934IPW Equivalent & Substitute Parts
Part Overview
The LMV934IPW is a general purpose operational amplifier featuring four independent circuits in a 14-TSSOP surface mount package. Manufactured by Texas Instruments, this rail-to-rail amplifier operates across a 1.8V to 5V supply range with a gain bandwidth product of 1.5 MHz and slew rate of 0.42V/µs. The device is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and production continuity. Substitute parts must maintain functional compatibility through matching electrical specifications and package form factors while offering active product status and improved availability.
Substiute Parts
Key Parameters
| Parameter | LMV934IPW | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 4 | — |
| Output Type | Rail-to-Rail | — |
| 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 |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) | — |
| Mounting Type | Surface Mount | — |
| Product Status | Obsolete | — |
Substitute Part Grouping Explanation
Substitute parts for the LMV934IPW are categorized based on strict adherence to the following electrical and mechanical compatibility criteria:
Primary Substitution Criteria:
- Four independent amplifier circuits in single package
- Rail-to-rail output configuration
- 14-TSSOP surface mount package (0.173", 4.40mm width)
- Supply voltage range compatibility (minimum 1.8V operation or higher)
- Operating temperature range of -40°C to 125°C or extended range
- General purpose amplifier classification
Electrical Parameter Tolerance Bands: Substitute parts must operate within the specified supply voltage window. Parts with minimum supply voltage requirements above 1.8V remain compatible if the application supply voltage exceeds the substitute's minimum specification. Slew rate, gain bandwidth product, input bias current, and output current specifications may vary within acceptable application-dependent ranges. Input offset voltage and supply current variations are acceptable provided they do not exceed application circuit requirements.
Grouping Categories:
Group 1 - Direct Electrical Equivalents (National Semiconductor LMV934 Series): LMV934MT/NOPB and LMV934MTX/NOPB maintain identical electrical specifications to the LMV934IPW with active product status and automotive qualification (AEC-Q100). These parts feature 14-TSSOP packaging and operate across 1.8V to 5.5V supply range.
Group 2 - Enhanced Performance Substitutes (Analog Devices AD8648 Series): AD8648ARUZ and AD8648ARUZ-REEL offer superior electrical performance with 24 MHz gain bandwidth product, 11V/µs slew rate, and 0.3pA input bias current. These parts maintain 14-TSSOP packaging and -40°C to 125°C operating range but require minimum 2.7V supply voltage.
Group 3 - Low-Power Alternatives (Rohm Semiconductor BD12734 Series): BD12734FVJ-E2 provides general purpose amplification in 14-TSSOP package with reduced supply current (1.2mA) and lower output current capability (12mA per channel). Operating temperature range limited to -40°C to 85°C.
Group 4 - CMOS Technology Alternatives (Rohm Semiconductor BU7487 and LMR Series): BU7487FV-E2, BU7487SFV-E2, LMR344FVJ-E2, and LMR934FVJ-E2 employ CMOS technology with ultra-low input bias current (1pA) and varying slew rate and bandwidth characteristics. Package configurations include 14-LSSOP and 14-TSSOP variants with supply ranges from 2.7V to 5.5V.
Group 5 - Automotive-Qualified Alternatives (STMicroelectronics LMV324 Series): LMV324IYPT provides automotive-grade general purpose amplification (AEC-Q100 qualified) in 14-TSSOP package with 2.7V to 6V supply range and enhanced output current capability (160mA per channel).
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Circuits | Slew Rate (V/µs) | GBW (MHz) | Input Bias (nA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package | Status |
|---|---|---|---|---|---|---|---|---|---|---|---|
| LMV934IPW | Texas Instruments | General Purpose | 4 | 0.42 | 1.5 | 15 | 1.8 | 5.0 | -40 to 125 | 14-TSSOP | Obsolete |
| LMV934MT/NOPB | National Semiconductor | General Purpose | 4 | 0.42 | 1.5 | 14 | 1.8 | 5.5 | -40 to 125 | 14-TSSOP | Active |
| LMV934MTX/NOPB | National Semiconductor | General Purpose | 4 | 0.42 | 1.5 | 14 | 1.8 | 5.5 | -40 to 125 | 14-TSSOP | Active |
| AD8648ARUZ | Analog Devices Inc. | General Purpose | 4 | 11 | 24 | 0.0003 | 2.7 | 5.5 | -40 to 125 | 14-TSSOP | Active |
| AD8648ARUZ-REEL | Analog Devices Inc. | General Purpose | 4 | 11 | 24 | 0.0003 | 2.7 | 5.5 | -40 to 125 | 14-TSSOP | Active |
| BD12734FVJ-E2 | Rohm Semiconductor | General Purpose | 4 | 0.4 | 1.0 | 50 | 1.8 | 5.0 | -40 to 85 | 14-TSSOP | Active |
| BU7487FV-E2 | Rohm Semiconductor | CMOS | 4 | 10 | 10 | 0.001 | 3.0 | 5.5 | -40 to 105 | 14-LSSOP | Active |
| BU7487SFV-E2 | Rohm Semiconductor | CMOS | 4 | 10 | 10 | 0.001 | 3.0 | 5.5 | -40 to 105 | 14-LSSOP | Active |
| LMR344FVJ-E2 | Rohm Semiconductor | CMOS | 4 | 1.0 | 2.0 | 0.001 | 2.7 | 5.5 | -40 to 85 | 14-TSSOP | Active |
| LMR934FVJ-E2 | Rohm Semiconductor | General Purpose | 4 | 0.35 | 1.4 | 5 | 1.8 | 5.0 | -40 to 85 | 14-TSSOP | Active |
| LMV324IYPT | STMicroelectronics | General Purpose | 4 | 0.45 | 1.3 | 16 | 2.7 | 6.0 | -40 to 125 | 14-TSSOP | Active |
Engineering Selection Recommendations
For Direct Replacement with Extended Availability: LMV934MT/NOPB and LMV934MTX/NOPB are recommended as primary substitutes. Both parts maintain identical electrical specifications to the LMV934IPW with active product status, higher inventory availability (2049 and 17700 units respectively), and automotive qualification (AEC-Q100). These parts are compatible with existing PCB layouts and require no circuit modifications. The extended supply voltage range (5.5V maximum) provides additional design margin compared to the original 5V specification.
For Enhanced Performance Applications: AD8648ARUZ and AD8648ARUZ-REEL offer superior dynamic performance with 24 MHz gain bandwidth product and 11V/µs slew rate, suitable for applications requiring faster signal processing. These parts maintain -40°C to 125°C operating range and 14-TSSOP packaging. Circuit redesign may be required to accommodate the higher supply voltage minimum (2.7V) and increased supply current (1.5mA per channel versus 116µA for the original part).
For Low-Power Supply-Constrained Applications: BD12734FVJ-E2 provides general purpose amplification with reduced supply current (1.2mA total) and maintains 1.8V minimum supply voltage operation. Operating temperature range is limited to -40°C to 85°C. Output current per channel is reduced to 12mA, requiring verification against application load requirements.
For Ultra-Low Input Bias Current Requirements: BU7487FV-E2, BU7487SFV-E2, LMR344FVJ-E2, and LMR934FVJ-E2 employ CMOS technology with input bias current of 1pA or less. BU7487 variants require minimum 3V supply voltage. LMR344FVJ-E2 and LMR934FVJ-E2 support 1.8V and 2.7V minimum supply respectively. Operating temperature range for Rohm CMOS variants is limited to -40°C to 85°C or -40°C to 105°C.
For Automotive Applications with Extended Temperature Range: LMV324IYPT is automotive-qualified (AEC-Q100) with -40°C to 125°C operating range and 14-TSSOP packaging. This part supports 2.7V to 6V supply range and provides enhanced output current capability (160mA per channel). Minimum supply voltage requirement of 2.7V must be verified against application specifications.
Compliance and Certification Status: All recommended substitute parts maintain ROHS3 compliance and EAR99 export classification consistent with the original LMV934IPW. Moisture sensitivity level is MSL 1 (unlimited) for all parts. Automotive-qualified options (LMV934MT/NOPB, LMV934MTX/NOPB, LMV324IYPT) carry AEC-Q100 qualification suitable for automotive and industrial applications.
Frequently Asked Questions (FAQ)
Q: Can LMV934MT/NOPB directly replace LMV934IPW without PCB modifications?
A: Yes. LMV934MT/NOPB maintains identical electrical specifications (0.42V/µs slew rate, 1.5 MHz gain bandwidth product, 4 circuits, rail-to-rail output) and 14-TSSOP package form factor. The extended maximum supply voltage (5.5V versus 5V) provides additional design margin. No circuit modifications are required for direct substitution.
Q: What is the key difference between LMV934MTX/NOPB and LMV934MT/NOPB?
A: Both parts are electrically identical with identical specifications and 14-TSSOP packaging. The primary difference is packaging format: LMV934MT/NOPB is supplied in bulk packaging, while LMV934MTX/NOPB is supplied in standard tape and reel format. LMV934MTX/NOPB offers significantly higher inventory availability (17700 units versus 2049 units).
Q: Why do AD8648ARUZ variants require higher minimum supply voltage (2.7V)?
A: AD8648ARUZ employs enhanced analog circuitry to achieve superior performance specifications (24 MHz gain bandwidth product, 11V/µs slew rate, 0.3pA input bias current). This architecture requires minimum 2.7V supply voltage for proper operation. Applications operating at 1.8V supply voltage cannot use AD8648 variants without circuit redesign to increase supply voltage.
Q: Are Rohm CMOS variants (BU7487, LMR344, LMR934) pin-compatible with LMV934IPW?
A: All Rohm variants maintain 14-pin TSSOP or 14-pin LSSOP package configurations with identical pinout to LMV934IPW. However, BU7487 variants use 14-LSSOP package (slightly different physical dimensions) while LMR344FVJ-E2 and LMR934FVJ-E2 use 14-TSSOP package. Verify PCB footprint compatibility before substitution.
Q: What is the operating temperature limitation for Rohm semiconductor parts?
A: Rohm general purpose and CMOS amplifier variants are rated for -40°C to 85°C operating range (BD12734FVJ-E2, LMR344FVJ-E2, LMR934FVJ-E2) or -40°C to 105°C (BU7487 variants). The original LMV934IPW and recommended National Semiconductor substitutes support -40°C to 125°C. Applications requiring full 125°C operation must use LMV934MT/NOPB, LMV934MTX/NOPB, AD8648 variants, or LMV324IYPT.
Q: Can LMV324IYPT be used in applications with 1.8V supply voltage?
A: No. LMV324IYPT requires minimum 2.7V supply voltage. Applications operating at 1.8V supply must use LMV934MT/NOPB, LMV934MTX/NOPB, BD12734FVJ-E2, or LMR934FVJ-E2, which all support 1.8V minimum supply operation.
Q: What is the significance of AEC-Q100 qualification?
A: AEC-Q100 qualification indicates the part meets automotive industry reliability and quality standards. LMV934MT/NOPB, LMV934MTX/NOPB, and LMV324IYPT carry AEC-Q100 qualification, making them suitable for automotive, industrial, and mission-critical applications. Non-qualified parts may be acceptable for consumer and commercial applications.
Q: How does input bias current affect circuit design?
A: Input bias current determines the DC offset voltage developed across input source impedance. LMV934IPW specifies 15nA input bias current. AD8648 variants offer 0.3pA (ultra-low), while CMOS variants (BU7487, LMR344, LMR934) offer 1pA. Lower input bias current reduces DC offset errors in high-impedance input circuits. Higher bias current (50nA for BD12734FVJ-E2) may require input bias compensation networks in precision applications.
Q: What output current capability is required for my application?
A: LMV934IPW provides 100mA per channel output current. Substitute parts vary: AD8648 variants provide 120mA, LMV324IYPT provides 160mA, while BD12734FVJ-E2 and Rohm CMOS variants provide 12-113mA. Verify application load requirements against substitute part output current specifications before selection.
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