OPA314AIDBVR Equivalent & Substitute Parts

Part Overview

The OPA314AIDBVR is a general-purpose operational amplifier manufactured by Texas Instruments, housed in a SOT-23-5 surface mount package. This single-circuit, rail-to-rail output amplifier operates across a supply voltage range of 1.8 V to 5.5 V and maintains active product status with full RoHS3 compliance. The device is specified for applications requiring low-power operation with moderate bandwidth performance. Substitute parts are identified when equivalent electrical characteristics and mechanical compatibility exist within the specified parameter ranges, enabling design flexibility and supply chain alternatives.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Gain Bandwidth Product	3	MHz
Slew Rate	1.5	V/µs
Voltage - Supply Span (Min)	1.8	V
Voltage - Supply Span (Max)	5.5	V
Current - Supply	150	µA
Current - Output / Channel	20	mA
Operating Temperature Range	-40 to 125	°C
Package / Case	SC-74A, SOT-753	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the OPA314AIDBVR is determined by strict alignment across the following critical parameters:

Primary Substitution Criteria:

Single-circuit general-purpose amplifier topology
Rail-to-rail output configuration
Gain bandwidth product within 3 MHz specification
Supply voltage span encompassing 1.8 V minimum to 5.5 V maximum
Surface mount packaging compatible with SOT-23-5 footprint
Operating temperature range supporting -40°C to 125°C
Active product status with RoHS3 compliance

Secondary Compatibility Factors:

Slew rate performance (1.5 V/µs nominal)
Supply current consumption (150 µA nominal)
Output current capability (20 mA per channel)
Input bias current and offset voltage characteristics

Substitute parts are grouped based on package form factor compatibility and electrical parameter alignment. Parts meeting all primary criteria are classified as direct substitutes. Parts with minor deviations in secondary parameters remain functionally compatible within the specified operating envelope.

Parameter Comparison

Part Number	Manufacturer	Package	GBW (MHz)	Slew Rate (V/µs)	Supply Min (V)	Supply Max (V)	Supply Current (µA)	Output Current (mA)	Temp Range (°C)	Output Type
OPA314AIDBVR	Texas Instruments	SOT-23-5	3	1.5	1.8	5.5	150	20	-40 to 125	Rail-to-Rail
NCS20061SN2T1G	onsemi	5-TSOP	3	1.2	1.8	5.5	140	19	-40 to 125	Rail-to-Rail
BD5291G-GTL	Rohm Semiconductor	5-SSOP	3.2	2.5	1.7	5.5	650	15	-40 to 85	Not Specified
BU7291SG-TR	Rohm Semiconductor	5-SSOP	2.8	3	2.4	5.5	470	16	-40 to 105	Rail-to-Rail
MAX4250EUK+T	Analog Devices Inc./Maxim Integrated	SOT-23-5	3	0.3	2.4	5.5	420	68	-40 to 85	Push-Pull, Rail-to-Rail
MAX4330EUK+T	Analog Devices Inc./Maxim Integrated	SOT-23-5	3	1.5	2.3	6.5	275	Not Specified	-40 to 85	Rail-to-Rail
MCP601T-E/OT	Microchip Technology	SOT-23-5	2.8	2.3	2.7	6	230	22	-40 to 125	Rail-to-Rail
MCP601T-I/OT	Microchip Technology	SOT-23-5	2.8	2.3	2.7	6	230	22	-40 to 85	Rail-to-Rail
MCP6271T-E/OT	Microchip Technology	SOT-23-5	2	0.9	2	6	170	25	-40 to 125	Rail-to-Rail
MCP6281T-E/OT	Microchip Technology	SOT-23-5	5	2.5	2.2	6	450	25	-40 to 125	Rail-to-Rail
MCP6286T-E/OT	Microchip Technology	SOT-23-5	3.5	2	2.2	5.5	540	Not Specified	-40 to 125	Rail-to-Rail

Engineering Selection Recommendations

Direct Package-Compatible Substitutes (SOT-23-5):

The following parts maintain identical or functionally equivalent package geometry and electrical characteristics suitable for direct PCB substitution:

NCS20061SN2T1G (onsemi): Operates within the 1.8 V to 5.5 V supply range with 3 MHz gain bandwidth product and rail-to-rail output. Moisture sensitivity level improved to MSL 1 (Unlimited). Supply current reduced to 140 µA. Suitable for applications prioritizing lower power consumption.
MAX4330EUK+T (Analog Devices Inc./Maxim Integrated): Maintains 3 MHz gain bandwidth product and rail-to-rail output with extended supply voltage range to 6.5 V maximum. Operating temperature limited to -40°C to 85°C. Moisture sensitivity level MSL 1 (Unlimited). Suitable for applications requiring extended supply voltage tolerance.
MCP601T-E/OT (Microchip Technology): Provides 2.8 MHz gain bandwidth product with rail-to-rail output across 2.7 V to 6 V supply range. Operating temperature extends to -40°C to 125°C. Supply current 230 µA. Moisture sensitivity level MSL 1 (Unlimited). Suitable for extended temperature applications.
MCP6271T-E/OT (Microchip Technology): Delivers 2 MHz gain bandwidth product with rail-to-rail output across 2 V to 6 V supply range. Operating temperature -40°C to 125°C. Supply current 170 µA. Moisture sensitivity level MSL 1 (Unlimited). Suitable for ultra-low-power applications.
MCP6281T-E/OT (Microchip Technology): Provides 5 MHz gain bandwidth product with enhanced slew rate of 2.5 V/µs and rail-to-rail output across 2.2 V to 6 V supply range. Operating temperature -40°C to 125°C. Moisture sensitivity level MSL 1 (Unlimited). Suitable for higher-bandwidth applications.
MCP6286T-E/OT (Microchip Technology): Delivers 3.5 MHz gain bandwidth product with 2 V/µs slew rate and rail-to-rail output across 2.2 V to 5.5 V supply range. Operating temperature -40°C to 125°C. Moisture sensitivity level MSL 1 (Unlimited). Suitable for moderate-bandwidth applications.

Alternative Package Substitutes (5-TSOP / 5-SSOP):

NCS20061SN2T1G (onsemi, 5-TSOP): Functionally equivalent with improved moisture sensitivity rating. Requires PCB layout modification for 5-TSOP footprint compatibility.
BD5291G-GTL (Rohm Semiconductor, 5-SSOP): Provides 3.2 MHz gain bandwidth product with 2.5 V/µs slew rate. Operating temperature limited to -40°C to 85°C. Supply current elevated to 650 µA. Output type not specified. Requires PCB layout modification for 5-SSOP footprint compatibility.
BU7291SG-TR (Rohm Semiconductor, 5-SSOP): Delivers 2.8 MHz gain bandwidth product with 3 V/µs slew rate and rail-to-rail output. Minimum supply voltage 2.4 V. Operating temperature -40°C to 105°C. Supply current 470 µA. Requires PCB layout modification for 5-SSOP footprint compatibility.

Compliance Status:

All substitute parts maintain RoHS3 compliance and REACH Unaffected status, consistent with the OPA314AIDBVR. All parts are classified as Active product status. Moisture sensitivity levels for substitute parts are MSL 1 (Unlimited), representing improved moisture handling compared to the OPA314AIDBVR MSL 2 (1 Year).

Frequently Asked Questions (FAQ)

Q: Can NCS20061SN2T1G replace OPA314AIDBVR in existing designs without PCB modification?

A: NCS20061SN2T1G uses a 5-TSOP package while OPA314AIDBVR uses SOT-23-5. Although both are five-pin surface mount packages, the physical footprints differ. PCB layout modification is required. However, electrical characteristics are compatible within the specified operating envelope.

Q: What is the primary difference between MCP6271T-E/OT and MCP6281T-E/OT?

A: MCP6281T-E/OT provides higher gain bandwidth product (5 MHz versus 2 MHz) and faster slew rate (2.5 V/µs versus 0.9 V/µs). MCP6281T-E/OT is suitable for applications requiring higher bandwidth performance. Supply current consumption is higher at 450 µA versus 170 µA.

Q: Are MAX4250EUK+T and MAX4330EUK+T interchangeable with OPA314AIDBVR?

A: Both MAX parts maintain SOT-23-5 package compatibility and 3 MHz gain bandwidth product. MAX4250EUK+T features push-pull output with 68 mA output current capability but reduced slew rate (0.3 V/µs). MAX4330EUK+T maintains 1.5 V/µs slew rate. Both are limited to -40°C to 85°C operating temperature. Electrical substitution is feasible; thermal requirements must be verified.

Q: Why do some substitute parts show higher supply current consumption?

A: Supply current variation reflects different internal circuit topologies and performance characteristics. BD5291G-GTL (650 µA) and BU7291SG-TR (470 µA) exhibit elevated supply current compared to OPA314AIDBVR (150 µA). Applications with strict power budget constraints should prioritize MCP6271T-E/OT (170 µA) or NCS20061SN2T1G (140 µA).

Q: What is the significance of moisture sensitivity level (MSL) differences?

A: OPA314AIDBVR is rated MSL 2 (1 Year), requiring controlled storage and handling. All substitute parts are rated MSL 1 (Unlimited), indicating superior moisture resistance and extended shelf life without special storage requirements. This represents an improvement in component reliability and supply chain flexibility.

Q: Can BD5291G-GTL be used in applications requiring rail-to-rail output?

A: BD5291G-GTL output type is not specified in the provided data. OPA314AIDBVR explicitly specifies rail-to-rail output. Substitution with BD5291G-GTL requires verification of output swing characteristics against application requirements. Alternative parts with confirmed rail-to-rail specification are recommended for rail-to-rail dependent designs.

Q: Which substitute part is optimal for extended temperature operation beyond 125°C?

A: All substitute parts are limited to maximum operating temperatures of 85°C to 125°C. No substitute part extends beyond the OPA314AIDBVR maximum of 125°C. Applications requiring operation above 125°C cannot be satisfied by the provided substitute list.

Q: Is MCP601T-E/OT suitable for 1.8 V minimum supply voltage applications?

A: MCP601T-E/OT specifies minimum supply voltage of 2.7 V, exceeding the OPA314AIDBVR minimum of 1.8 V. Applications requiring operation at 1.8 V supply voltage must use OPA314AIDBVR, NCS20061SN2T1G, or MCP6271T-E/OT (2 V minimum). MCP601T-E/OT is not suitable for ultra-low-voltage applications.

Q: What is the advantage of MCP6286T-E/OT over MCP6281T-E/OT?

A: MCP6286T-E/OT provides 3.5 MHz gain bandwidth product with 2 V/µs slew rate, compared to MCP6281T-E/OT at 5 MHz and 2.5 V/µs. MCP6286T-E/OT exhibits lower supply current (540 µA versus 450 µA) and reduced slew rate. Selection depends on bandwidth and power consumption priorities.

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