OPA313DBVT Equivalent & Substitute Parts

Part Overview

The OPA313DBVT is a general-purpose operational amplifier manufactured by Texas Instruments, featuring rail-to-rail output capability in a compact SOT-23-5 surface mount package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The OPA313DBVT operates across a supply voltage range of 1.8 V to 5.5 V with a gain bandwidth product of 1 MHz and is suitable for low-power analog signal conditioning applications.

Substiute Parts

OPA313DBVT

Texas InstrumentsIn Stock: 746OPA313DBVT Datasheet

Current PartRFQ

MCP6271RT-E/OT

Microchip TechnologyIn Stock: 15912MCP6271RT-E/OT Datasheet

MFR RecommendedRFQ

TSV321RIYLT

STMicroelectronicsIn Stock: 9240TSV321RIYLT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPA313DBVT is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Amplifier Type: General Purpose
• Number of Circuits: 1
• Output Type: Rail-to-Rail
• Package / Case: SC-74A, SOT-753 (SOT-23-5)
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C to 125°C minimum

Allowable Parameter Variations: Substitute parts must maintain functional equivalence within the following tolerances:

• Slew Rate: Equal to or greater than 0.5 V/µs
• Gain Bandwidth Product: Equal to or greater than 1 MHz
• Current - Input Bias: Equal to or less than 0.2 pA (lower is acceptable)
• Voltage - Input Offset: Equal to or less than 500 µV (lower is acceptable)
• Current - Supply: Equal to or less than 50 µA (lower is acceptable)
• Current - Output / Channel: Equal to or greater than 15 mA
• Voltage - Supply Span (Min): Equal to or less than 1.8 V (lower is acceptable)
• Voltage - Supply Span (Max): Equal to or greater than 5.5 V

The two identified substitute parts meet these criteria with enhanced performance characteristics in specific parameters while maintaining backward compatibility with the OPA313DBVT pinout and functional requirements.

Parameter Comparison

Engineering Selection Recommendations

MCP6271RT-E/OT (Microchip Technology)

The MCP6271RT-E/OT is an active product with enhanced performance specifications. It provides a 2 MHz gain bandwidth product (double that of the OPA313DBVT) and improved slew rate of 0.9 V/µs. The device maintains ROHS3 compliance and features improved moisture sensitivity rating (MSL 1, Unlimited versus MSL 2, 1 Year). Supply current is elevated at 170 µA compared to 50 µA in the original part. This substitute is suitable for applications requiring higher bandwidth performance while accepting increased power consumption. Packaging and pinout compatibility with SOT-23-5 is confirmed.

TSV321RIYLT (STMicroelectronics)

The TSV321RIYLT is an active product with automotive-grade qualification (AEC-Q100) and enhanced output current capability of 80 mA. This device offers superior input offset voltage specification (200 µV versus 500 µV) and improved slew rate of 0.6 V/µs. The minimum supply voltage requirement is 2.5 V, which is higher than the OPA313DBVT's 1.8 V minimum. Supply current consumption is significantly higher at 500 µA. This substitute is appropriate for automotive applications and designs requiring higher output drive capability. Packaging and pinout compatibility with SOT-23-5 is confirmed.

Both substitute parts are currently in active production status, ensuring long-term availability and supply chain continuity compared to the obsolete OPA313DBVT.

Frequently Asked Questions (FAQ)

Q: Can the MCP6271RT-E/OT directly replace the OPA313DBVT in existing designs?

A: The MCP6271RT-E/OT shares identical pinout and package configuration (SOT-23-5) with the OPA313DBVT. However, the increased supply current (170 µA versus 50 µA) and higher input offset voltage (3 mV versus 500 µV) must be evaluated against circuit requirements. Designs with strict power budgets or precision requirements may require circuit modifications.

Q: What is the primary difference between the two substitute options?

A: The MCP6271RT-E/OT emphasizes bandwidth performance (2 MHz gain bandwidth product) with moderate power consumption increase. The TSV321RIYLT emphasizes output current capability (80 mA) and precision (200 µV input offset) with significantly higher power consumption (500 µA) and automotive qualification. Selection depends on application-specific requirements for bandwidth, output drive, or automotive compliance.

Q: Is the TSV321RIYLT suitable for non-automotive applications?

A: Yes. The TSV321RIYLT meets all functional requirements for general-purpose applications. The automotive qualification (AEC-Q100) indicates enhanced reliability and quality assurance but does not restrict use in non-automotive designs. The higher supply current and minimum supply voltage (2.5 V) are the primary design considerations.

Q: Are all three parts RoHS and REACH compliant?

A: Yes. The OPA313DBVT, MCP6271RT-E/OT, and TSV321RIYLT are all ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for commercial and industrial applications.

Q: What is the significance of the MSL (Moisture Sensitivity Level) difference?

A: The OPA313DBVT has MSL 2 with a 1-year shelf life, requiring controlled storage conditions. Both substitute parts have MSL 1 with unlimited shelf life, providing superior moisture resistance and extended storage capability without special environmental controls.

Q: Can these parts be used interchangeably in production?

A: Electrical interchangeability is confirmed for the SOT-23-5 package and pinout. However, functional interchangeability depends on circuit tolerance to parameter variations. Designs with tight specifications for supply current, input offset voltage, or minimum supply voltage require validation testing before production implementation.