OPA364IDR Equivalent & Substitute Parts

Part Overview

The OPA364IDR is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface-mount package. This single-circuit, rail-to-rail 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 suitable for applications requiring low-power signal conditioning, buffering, and general analog signal processing in compact form factors.

Substitute parts become necessary when the OPA364IDR reaches end-of-life status, inventory constraints occur, or alternative sourcing is required to meet supply chain objectives. All substitute parts listed maintain electrical and mechanical compatibility within the specified parameter tolerances for this product category.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Voltage - Supply Span (Min)	1.8	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 125	°C
Slew Rate	5	V/µs
Gain Bandwidth Product	7	MHz
Current - Supply	1.1	mA
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the OPA364IDR is determined by strict adherence to the following electrical and mechanical parameters:

Mandatory Compatibility Criteria:

Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Amplifier Type: General Purpose
Number of Circuits: 1
Output Type: Rail-to-Rail
Operating Temperature Range: -40°C to 125°C (minimum)
Voltage - Supply Span (Min): 1.8 V or lower
Voltage - Supply Span (Max): 5.5 V or higher

Electrical Performance Parameters (Allowable Variation): Substitute parts must operate within the specified supply voltage range and maintain surface-mount 8-SOIC packaging. Slew rate, gain bandwidth product, and current specifications may vary provided the substitute part functions within the OPA364IDR's electrical operating envelope.

All listed substitute parts satisfy these mandatory criteria and maintain active product status with RoHS3 compliance.

Parameter Comparison

Parameter	OPA364IDR	AD8551ARZ-REEL7	MAX4322ESA+	MCP6281-E/SN	MCP6281T-E/SN	MCP6283-E/SN	TSV911AIDT
Manufacturer	Texas Instruments	Analog Devices Inc.	Analog Devices Inc./Maxim Integrated	Microchip Technology	Microchip Technology	Microchip Technology	STMicroelectronics
Amplifier Type	General Purpose	Zero-Drift	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	1	1	1	1	1	1	1
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	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Voltage - Supply Span (Min)	1.8 V	2.7 V	2.4 V	2.2 V	2.2 V	2.2 V	2.5 V
Voltage - Supply Span (Max)	5.5 V	5.5 V	6.5 V	6 V	6 V	6 V	5.5 V
Operating Temperature	-40 to 125°C	-40 to 125°C	-40 to 85°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C
Slew Rate	5 V/µs	0.4 V/µs	2 V/µs	2.5 V/µs	2.5 V/µs	2.5 V/µs	4.5 V/µs
Gain Bandwidth Product	7 MHz	1.5 MHz	5 MHz	5 MHz	5 MHz	5 MHz	8 MHz
Current - Supply	1.1 mA	850 µA	725 µA	450 µA	450 µA	450 µA	820 µA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts listed maintain active product status and full RoHS3 compliance, meeting regulatory requirements for current procurement and deployment. Selection among substitute parts depends on application-specific requirements within the following framework:

AD8551ARZ-REEL7 (Analog Devices Inc.): This zero-drift amplifier variant offers superior input offset voltage performance (1 µV versus 500 µV on the OPA364IDR) and lower input bias current (10 pA). The reduced slew rate (0.4 V/µs) and lower gain bandwidth product (1.5 MHz) indicate suitability for precision DC measurement and low-frequency signal conditioning applications where offset drift minimization is critical. Moisture sensitivity level is 1 (Unlimited), providing superior moisture protection compared to the OPA364IDR's MSL 2 rating.

MAX4322ESA+ (Analog Devices Inc./Maxim Integrated): This general-purpose amplifier operates across an extended maximum supply voltage of 6.5 V and maintains lower supply current (725 µA). Operating temperature range is limited to -40°C to 85°C, restricting use in applications requiring the full -40°C to 125°C range. This part is suitable for battery-powered and low-power applications within the reduced temperature specification.

MCP6281-E/SN and MCP6281T-E/SN (Microchip Technology): These general-purpose amplifiers feature the lowest supply current (450 µA) among all substitutes, making them optimal for power-constrained applications. Both parts maintain identical electrical specifications with differences only in packaging format (Tube versus Tape & Reel). The MCP6281T-E/SN in Tape & Reel format matches the OPA364IDR's original packaging type. Extended supply voltage range (2.2 V to 6 V) provides additional design flexibility.

MCP6283-E/SN (Microchip Technology): Electrically identical to the MCP6281 series with identical supply current (450 µA) and bandwidth characteristics. Supplied in Tube packaging. Selection between MCP6281 and MCP6283 variants depends on packaging and inventory requirements.

TSV911AIDT (STMicroelectronics): This general-purpose amplifier offers the highest gain bandwidth product (8 MHz) among all substitutes, exceeding the OPA364IDR's 7 MHz specification. Slew rate of 4.5 V/µs approaches the OPA364IDR's 5 V/µs performance. This part is suitable for applications requiring higher bandwidth performance while maintaining low supply current (820 µA). Highest inventory availability (25,200 units) among all substitutes.

Frequently Asked Questions (FAQ)

Q: Can the AD8551ARZ-REEL7 be used as a direct replacement for the OPA364IDR in all applications?

A: The AD8551ARZ-REEL7 maintains mechanical and electrical compatibility within the specified supply voltage and temperature ranges. However, the zero-drift amplifier architecture and significantly different slew rate (0.4 V/µs versus 5 V/µs) and gain bandwidth product (1.5 MHz versus 7 MHz) indicate this part is optimized for precision DC applications rather than general-purpose signal conditioning. Application-specific circuit validation is required.

Q: What is the primary difference between MCP6281-E/SN and MCP6281T-E/SN?

A: Both parts are electrically identical. The primary difference is packaging format: MCP6281-E/SN is supplied in Tube packaging, while MCP6281T-E/SN is supplied in Tape & Reel (TR) format. The Tape & Reel variant matches the OPA364IDR's original packaging type for automated assembly processes.

Q: Does the MAX4322ESA+ operate across the full temperature range of the OPA364IDR?

A: No. The MAX4322ESA+ operates from -40°C to 85°C, while the OPA364IDR operates from -40°C to 125°C. Applications requiring operation above 85°C must use alternative substitutes that maintain the full -40°C to 125°C temperature specification.

Q: Which substitute part offers the lowest power consumption?

A: The MCP6281-E/SN and MCP6281T-E/SN both offer the lowest supply current at 450 µA, compared to the OPA364IDR's 1.1 mA. These parts are optimal for battery-powered and energy-constrained applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 Compliant status, meeting current regulatory requirements for hazardous substance restrictions.

Q: Can the TSV911AIDT be used in applications requiring the OPA364IDR's 5 V/µs slew rate?

A: The TSV911AIDT offers a slew rate of 4.5 V/µs, which is slightly lower than the OPA364IDR's 5 V/µs. For applications with strict slew rate requirements, circuit-level validation is necessary to confirm performance adequacy.

Q: What is the moisture sensitivity level difference between the OPA364IDR and substitute parts?

A: The OPA364IDR has MSL 2 (1 Year), while all substitute parts have MSL 1 (Unlimited). MSL 1 provides superior moisture protection and extended shelf life without requiring controlled humidity storage conditions.

Q: Do all substitute parts maintain the same 8-SOIC package dimensions?

A: Yes. All substitute parts use the 8-SOIC (0.154", 3.90mm Width) package, ensuring mechanical compatibility with existing printed circuit board layouts and assembly processes.

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