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LMV934IPWE4 Equivalent & Substitute Parts
Part Overview
The LMV934IPWE4 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 support and procurement.
The LMV934IPWE4 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. Due to its obsolete status, equivalent parts with active product status are required for new designs and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | Texas Instruments | — |
| Part Number | LMV934IPWE4 | — |
| 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 LMV934IPWE4 is determined by the following critical parameters:
Primary Substitution Criteria:
- Number of Circuits: 4 independent amplifier channels
- Output Type: Rail-to-Rail capability
- Package / Case: 14-TSSOP form factor (0.173", 4.40mm Width)
- Mounting Type: Surface Mount
- Voltage - Supply Span: Minimum 1.8V to maximum 5V overlap
- Operating Temperature: -40°C to 125°C range
- Amplifier Type: General Purpose classification
Secondary Compatibility Parameters:
- Slew Rate: 0.42V/µs (minimum acceptable performance)
- Gain Bandwidth Product: 1.5 MHz (minimum acceptable performance)
- Current - Input Bias: 15 nA (maximum acceptable)
- Voltage - Input Offset: 1 mV (maximum acceptable)
- Current - Output / Channel: 100 mA (minimum acceptable)
Substitute parts are grouped into two categories based on electrical performance alignment:
Category A - Direct Electrical Equivalents: Parts with electrical parameters matching or closely aligned to the LMV934IPWE4 specifications, including slew rate, gain bandwidth product, and supply current characteristics.
Category B - Enhanced Performance Alternatives: Parts with superior electrical performance (higher slew rate, higher gain bandwidth product, lower input bias current) that maintain backward compatibility through identical package, pin count, and supply voltage range.
Parameter Comparison
| Parameter | LMV934IPWE4 | LMV934MTX/NOPB | AD8648ARUZ | BD12734FVJ-E2 | BU7487SFV-E2 | LMR934FVJ-E2 | LMV324IYPT |
|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | National Semiconductor | Analog Devices Inc. | Rohm Semiconductor | Rohm Semiconductor | Rohm Semiconductor | STMicroelectronics |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active |
| Amplifier Type | General Purpose | General Purpose | General Purpose | General Purpose | CMOS | General Purpose | General Purpose |
| Number of Circuits | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Output Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail |
| Package / Case | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-LSSOP | 14-TSSOP | 14-TSSOP |
| Slew Rate (V/µs) | 0.42 | 0.42 | 11 | 0.4 | 10 | 0.35 | 0.45 |
| Gain Bandwidth Product (MHz) | 1.5 | 1.5 | 24 | 1 | 10 | 1.4 | 1.3 |
| Current - Input Bias (nA) | 15 | 14 | 0.3 pA | 50 | 1 pA | 5 | 16 |
| Voltage - Input Offset (mV) | 1 | 1 | 0.6 mV | 1 | 1 | 1 | 0.1 mV |
| Current - Supply (µA) | 116 | 116 | 1500 | 1200 | 6000 | 250 | 162 |
| Current - Output / Channel (mA) | 100 | 100 | 120 | 12 | 12 | 90 | 160 |
| Voltage - Supply Span Min (V) | 1.8 | 1.8 | 2.7 | 1.8 | 3 | 1.8 | 2.7 |
| Voltage - Supply Span Max (V) | 5 | 5.5 | 5.5 | 5 | 5.5 | 5 | 6 |
| Operating Temperature (°C) | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 85 | -40 to 105 | -40 to 85 | -40 to 125 |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | — | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Automotive Grade | — | AEC-Q100 | — | — | — | — | AEC-Q100 |
Engineering Selection Recommendations
Primary Recommendation: LMV934MTX/NOPB
The LMV934MTX/NOPB from National Semiconductor is the closest electrical equivalent to the LMV934IPWE4. This part maintains identical electrical specifications including slew rate (0.42V/µs), gain bandwidth product (1.5 MHz), and supply current (116µA). The device is active with AEC-Q100 automotive qualification, providing enhanced reliability for production environments. Supply voltage range extends to 5.5V maximum, offering improved headroom compared to the original 5V specification. Operating temperature range matches the original (-40°C to 125°C). Current inventory of 17,700 units supports immediate procurement requirements.
Secondary Recommendation: LMV324IYPT
The LMV324IYPT from STMicroelectronics provides an active alternative with automotive-grade AEC-Q100 qualification. Electrical parameters remain within acceptable tolerance: slew rate 0.45V/µs, gain bandwidth product 1.3 MHz, and supply current 162µA. This device offers superior input offset voltage (100µV versus 1mV) and higher output current capability (160mA versus 100mA). Supply voltage range extends to 6V maximum. Operating temperature range matches the original specification (-40°C to 125°C). Current inventory of 5,750 units supports production requirements.
Alternative for Enhanced Performance: AD8648ARUZ
The AD8648ARUZ from Analog Devices Inc. provides significantly enhanced electrical performance with 11V/µs slew rate and 24MHz gain bandwidth product. This device is suitable for applications requiring higher bandwidth and faster transient response. Input bias current is substantially lower (0.3pA). However, supply current increases to 1.5mA, and minimum supply voltage requirement rises to 2.7V. Package remains 14-TSSOP. This option is appropriate for designs where performance headroom justifies increased power consumption.
Compatibility Constraints:
- BU7487SFV-E2 and BU7487FV-E2 require minimum 3V supply voltage, incompatible with 1.8V minimum requirement of original design
- BD12734FVJ-E2 limits operating temperature to -40°C to 85°C, below original 125°C maximum
- LMR934FVJ-E2 and LMR344FVJ-E2 operate to 85°C maximum, incompatible with 125°C requirement
- All recommended substitutes maintain 14-TSSOP package compatibility and surface mount mounting type
Frequently Asked Questions (FAQ)
Q1: Can the LMV934MTX/NOPB directly replace the LMV934IPWE4 without circuit modifications?
A: Yes. The LMV934MTX/NOPB maintains identical electrical specifications for slew rate, gain bandwidth product, input bias current, input offset voltage, and output current per channel. Pin configuration and package footprint (14-TSSOP) are identical. Supply voltage range compatibility spans 1.8V to 5.5V, encompassing the original 1.8V to 5V specification. No circuit modifications are required for direct substitution.
Q2: What is the primary reason the LMV934IPWE4 requires substitution?
A: The LMV934IPWE4 is classified as obsolete by Texas Instruments. Obsolete status indicates the manufacturer no longer produces this component and will not support future orders. Active equivalent parts must be identified to ensure design continuity and production availability.
Q3: Are there performance differences between the recommended substitutes?
A: Yes. The LMV934MTX/NOPB and LMV324IYPT maintain electrical performance closely aligned to the original LMV934IPWE4. The AD8648ARUZ offers enhanced performance with 11V/µs slew rate and 24MHz gain bandwidth product, suitable for applications requiring higher bandwidth. Selection depends on specific application requirements and power budget constraints.
Q4: Do all substitute parts meet RoHS compliance requirements?
A: All recommended substitute parts are ROHS3 compliant. The original LMV934IPWE4 is also ROHS3 compliant. Compliance status is maintained across all active alternatives.
Q5: Which substitute parts carry automotive qualification?
A: The LMV934MTX/NOPB and LMV324IYPT both carry AEC-Q100 automotive qualification. This certification indicates compliance with automotive industry reliability and quality standards. The AD8648ARUZ does not carry automotive qualification but is suitable for industrial and commercial applications.
Q6: What is the impact of supply voltage range differences on substitution?
A: The LMV934MTX/NOPB extends maximum supply voltage to 5.5V compared to the original 5V specification, providing improved headroom. The LMV324IYPT extends to 6V maximum. The BU7487SFV-E2 requires minimum 3V supply voltage, making it incompatible with designs operating at 1.8V minimum. Verify application supply voltage requirements before selection.
Q7: Are there operating temperature range limitations with substitute parts?
A: The LMV934MTX/NOPB and LMV324IYPT maintain the original -40°C to 125°C operating temperature range. The BD12734FVJ-E2, LMR934FVJ-E2, and LMR344FVJ-E2 limit maximum temperature to 85°C, incompatible with applications requiring 125°C operation. The BU7487SFV-E2 operates to 105°C maximum. Verify application temperature requirements before selection.
Q8: What package considerations apply to substitute selection?
A: All recommended primary substitutes maintain the 14-TSSOP package form factor (0.173", 4.40mm Width) with identical pin configuration. PCB footprints and assembly processes remain unchanged. The BU7487SFV-E2 uses 14-LSSOP package, which differs slightly in body dimensions but maintains identical pin pitch and footprint compatibility for most applications.
Q9: How do input bias current specifications affect circuit design?
A: The LMV934IPWE4 specifies 15nA input bias current. The LMV934MTX/NOPB specifies 14nA, and the LMV324IYPT specifies 16nA—all within equivalent range. The AD8648ARUZ specifies 0.3pA, substantially lower, beneficial for high-impedance input circuits. The BU7487SFV-E2 specifies 1pA. Lower input bias current reduces input offset errors in precision applications.
Q10: What inventory considerations apply to procurement?
A: Current inventory levels vary significantly: LMV934MTX/NOPB (17,700 units), LMV324IYPT (5,750 units), AD8648ARUZ (3,563 units), and LMR934FVJ-E2 (3,126 units). High inventory levels for LMV934MTX/NOPB support immediate procurement without lead time constraints. Verify supplier inventory status for production volume requirements.
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