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LPV321DBVRG4 Equivalent & Substitute Parts
Part Overview
The LPV321DBVRG4 is a general-purpose operational amplifier manufactured by Texas Instruments, housed in a SOT-23-5 surface mount package. This device is classified as obsolete, necessitating identification of active substitute components for new designs and ongoing production requirements. The LPV321DBVRG4 operates as a single-circuit rail-to-rail amplifier suitable for low-power applications requiring minimal supply current and input bias characteristics.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 1 | — |
| Output Type | Rail-to-Rail | — |
| Slew Rate | 0.1 | V/µs |
| Gain Bandwidth Product | 237 | kHz |
| Current - Input Bias | 2 | nA |
| Voltage - Input Offset | 1.5 | mV |
| Current - Supply | 9 | µA |
| Voltage - Supply Span (Min) | 2.7 | V |
| Voltage - Supply Span (Max) | 5 | V |
| Operating Temperature | -40 to 85 | °C |
| Package / Case | SC-74A, SOT-753 | — |
| Supplier Device Package | SOT-23-5 | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the LPV321DBVRG4 are grouped based on the following substitution criteria:
Group 1: Direct LPV321 Series Substitutes (SOT-23-5 Package) These parts maintain identical electrical performance characteristics and package form factor. Substitution is based on matching supply voltage range (2.7 V to 5 V), slew rate (0.1 V/µs), gain bandwidth product (152–237 kHz), input bias current (2 nA), and input offset voltage (1.5 mV). All Group 1 parts are housed in SOT-23-5 packages and support the same operating temperature range (-40°C to 85°C).
Group 2: LMV321 Series Substitutes (Enhanced Performance) These parts provide superior electrical performance with increased slew rate (1 V/µs), higher gain bandwidth product (1 MHz), and extended supply voltage range (2.7 V to 5.5 V). Input bias current increases to 15 nA and input offset voltage to 1.7 mV. These substitutes are available in both SOT-23-5 and SC-70-5 packages. LMV321 variants are active products with higher inventory availability.
Group 3: Alternative Package Options (SC-70-5) LMV321M7/NOPB and LMV321M7X/NOPB provide the same enhanced electrical performance as Group 2 but in SC-70-5 (5-TSSOP, SOT-353) package format. These are suitable for applications where package footprint differs from the original SOT-23-5.
Group 4: Cross-Manufacturer Alternatives (Microchip Technology) MCP6231RT-E/OT and MCP6231T-E/OT are Microchip Technology general-purpose amplifiers with extended operating temperature range (-40°C to 125°C), wider supply voltage span (1.8 V to 6 V), and superior input bias current (1 pA). These parts are housed in SOT-23-5 packages and represent a different manufacturer solution.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Slew Rate (V/µs) | GBW (kHz) | Input Bias (nA) | Input Offset (mV) | Supply Current (µA) | Supply Voltage Min (V) | Supply Voltage Max (V) | Package | Temp Range (°C) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| LPV321DBVRG4 | Texas Instruments | Obsolete | 0.1 | 237 | 2 | 1.5 | 9 | 2.7 | 5 | SOT-23-5 | -40 to 85 |
| LPV321M5/NOPB | Texas Instruments | Active | 0.1 | 152 | 2 | 1.5 | 9 | 2.7 | 5 | SOT-23-5 | -40 to 85 |
| LPV321M5X/NOPB | National Semiconductor | Active | 0.1 | 152 | 2 | 1.5 | 9 | 2.7 | 5 | SOT-23-5 | -40 to 85 |
| LPV321M7/NOPB | National Semiconductor | Active | 0.1 | 152 | 2 | 1.5 | 9 | 2.7 | 5 | SC-70-5 | -40 to 85 |
| LPV321M7X/NOPB | National Semiconductor | Active | 0.1 | 152 | 2 | 1.5 | 9 | 2.7 | 5 | SC-70-5 | -40 to 85 |
| LMV321M5/NOPB | Texas Instruments | Active | 1 | 1000 | 15 | 1.7 | 130 | 2.7 | 5.5 | SOT-23-5 | -40 to 85 |
| LMV321M5X/NOPB | Texas Instruments | Active | 1 | 1000 | 15 | 1.7 | 130 | 2.7 | 5.5 | SOT-23-5 | -40 to 85 |
| LMV321M7/NOPB | Texas Instruments | Active | 1 | 1000 | 15 | 1.7 | 130 | 2.7 | 5.5 | SC-70-5 | -40 to 85 |
| LMV321M7X/NOPB | Texas Instruments | Active | 1 | 1000 | 15 | 1.7 | 130 | 2.7 | 5.5 | SC-70-5 | -40 to 85 |
| MCP6231RT-E/OT | Microchip Technology | Active | 0.15 | 300 | 0.001 | 5 | 20 | 1.8 | 6 | SOT-23-5 | -40 to 125 |
| MCP6231T-E/OT | Microchip Technology | Active | 0.15 | 300 | 0.001 | 5 | 20 | 1.8 | 6 | SOT-23-5 | -40 to 125 |
Engineering Selection Recommendations
For Direct Replacement (Identical Electrical Performance): Select LPV321M5/NOPB or LPV321M5X/NOPB when maintaining the original SOT-23-5 package is required and electrical performance specifications match the original design. Both parts are active products with established supply chains. LPV321M5/NOPB is manufactured by Texas Instruments; LPV321M5X/NOPB is sourced from National Semiconductor. Both are ROHS3 compliant with MSL 1 rating.
For Enhanced Performance with Same Package: Select LMV321M5/NOPB or LMV321M5X/NOPB when improved slew rate (1 V/µs versus 0.1 V/µs), higher gain bandwidth product (1 MHz versus 237 kHz), and extended supply voltage range (up to 5.5 V) are compatible with circuit design. These parts maintain SOT-23-5 packaging and operating temperature range. Supply current increases to 130 µA. Both variants are active products with high inventory availability.
For Alternative Package Formats: Select LMV321M7/NOPB or LMV321M7X/NOPB when SC-70-5 (5-TSSOP, SOT-353) package format is required. These parts provide identical electrical performance to the M5 variants but in a smaller footprint. Both are active products manufactured by Texas Instruments.
For Extended Temperature Range Applications: Select MCP6231RT-E/OT or MCP6231T-E/OT when operating temperature range must extend to 125°C. These Microchip Technology parts support supply voltage from 1.8 V to 6 V and feature extremely low input bias current (1 pA). Both are ROHS3 compliant and active products. Note that input offset voltage is 5 mV, higher than the original specification.
All substitute parts listed are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8542.33.0001, matching the regulatory status of the original component.
Frequently Asked Questions (FAQ)
Q: Can LPV321M5/NOPB directly replace LPV321DBVRG4 in existing designs? A: Yes. LPV321M5/NOPB maintains identical electrical specifications including slew rate (0.1 V/µs), gain bandwidth product (152 kHz), input bias current (2 nA), input offset voltage (1.5 mV), and supply current (9 µA). Both operate across 2.7 V to 5 V supply range and -40°C to 85°C temperature range. Package format (SOT-23-5) is identical. This is a direct functional equivalent.
Q: What is the difference between LMV321 and LPV321 series? A: The LMV321 series provides enhanced performance specifications. Slew rate increases from 0.1 V/µs to 1 V/µs, and gain bandwidth product increases from 152–237 kHz to 1 MHz. Supply voltage range extends to 5.5 V maximum. Input bias current increases to 15 nA, and input offset voltage increases to 1.7 mV. Supply current increases to 130 µA. LMV321 variants are suitable for applications requiring faster response times and higher bandwidth.
Q: Are LPV321M5/NOPB and LPV321M5X/NOPB interchangeable? A: Both parts are electrically identical with matching specifications. LPV321M5/NOPB is manufactured by Texas Instruments; LPV321M5X/NOPB is sourced from National Semiconductor. Both are housed in SOT-23-5 packages and are ROHS3 compliant. Selection between these variants depends on supplier availability and procurement preferences.
Q: What packaging options are available for LMV321 substitutes? A: LMV321 is available in two package formats. SOT-23-5 (SC-74A, SOT-753) is offered as LMV321M5/NOPB and LMV321M5X/NOPB. SC-70-5 (5-TSSOP, SOT-353) is offered as LMV321M7/NOPB and LMV321M7X/NOPB. The SC-70-5 package provides a smaller footprint suitable for space-constrained applications.
Q: Why would I select MCP6231 over LPV321 or LMV321? A: MCP6231 is selected when extended operating temperature range (-40°C to 125°C) is required. It also supports wider supply voltage range (1.8 V to 6 V) and features extremely low input bias current (1 pA). However, input offset voltage is 5 mV compared to 1.5 mV for LPV321 and 1.7 mV for LMV321. MCP6231 is manufactured by Microchip Technology and is available in SOT-23-5 package.
Q: Is the LPV321DBVRG4 still available for purchase? A: LPV321DBVRG4 is classified as obsolete. Active substitute parts with established supply chains include LPV321M5/NOPB, LMV321M5/NOPB, LMV321M5X/NOPB, and MCP6231 variants. For new designs, active product variants are recommended to ensure long-term component availability.
Q: What is the significance of the "X" suffix in part numbers like LPV321M5X/NOPB? A: The "X" suffix typically indicates a specific manufacturing or packaging variant. LPV321M5X/NOPB and LMV321M5X/NOPB are functionally equivalent to their non-X counterparts but may differ in packaging format or manufacturing source. Consult manufacturer datasheets for specific variant details.
Q: Are all listed substitutes ROHS3 compliant? A: Yes. All substitute parts listed—including LPV321M5/NOPB, LMV321 variants, and MCP6231 variants—are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. All are REACH unaffected and classified under ECCN EAR99.
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