OPA322AIDBVR Equivalent & Substitute Parts

Part Overview

The OPA322AIDBVR is a general purpose operational amplifier manufactured by Texas Instruments, designed for rail-to-rail signal processing applications. This single-circuit amplifier operates across a supply voltage range of 1.8V to 5.5V and is housed in a SOT-23-5 surface mount package. The device is currently in active production status with 26,100 units in stock inventory.

Substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits alternative sourcing while maintaining functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

OPA322AIDBVR

Texas InstrumentsIn Stock: 26153OPA322AIDBVR Datasheet

Current PartRFQ

MAX4130EUK+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2995MAX4130EUK+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the OPA322AIDBVR is determined by the following critical parameters:

Mechanical Compatibility:

• Package type: SOT-23-5 (SC-74A, SOT-753)
• Mounting type: Surface Mount
• Pin count and pinout: 5-pin configuration

Functional Compatibility:

• Amplifier classification: General Purpose
• Circuit count: Single circuit (1)
• Output configuration: Rail-to-Rail
• Supply voltage overlap: Minimum 1.8V to 5.5V range

Regulatory Compliance:

• RoHS3 compliance required
• REACH unaffected status

The MAX4130EUK+T qualifies as a manufacturer-recommended substitute based on matching mechanical package specifications, functional amplifier classification, and regulatory compliance status. Both devices operate as single-circuit general purpose amplifiers in identical SOT-23-5 packages with rail-to-rail output capability.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: OPA322AIDBVR

The OPA322AIDBVR remains the primary component choice based on active product status, full inventory availability (26,100 units), and extended operating temperature range (-40°C to 125°C). This device supports the minimum supply voltage of 1.8V, enabling operation in ultra-low-power applications. RoHS3 compliance and REACH unaffected status satisfy regulatory requirements for industrial and commercial applications.

Substitute Selection: MAX4130EUK+T

The MAX4130EUK+T qualifies as a manufacturer-recommended substitute when OPA322AIDBVR availability is constrained. Both devices share identical mechanical packaging (SOT-23-5), functional classification (single-circuit general purpose amplifier), and regulatory compliance status. The MAX4130EUK+T operates within the OPA322AIDBVR supply voltage range (2.7V to 6.5V overlap with 1.8V to 5.5V), supporting applications requiring supply voltages between 2.7V and 5.5V.

Operational Differences:

The MAX4130EUK+T exhibits lower slew rate (4V/µs versus 10V/µs) and reduced gain bandwidth product (10 MHz versus 20 MHz), resulting in slower signal response characteristics. The MAX4130EUK+T operates to 85°C maximum temperature, compared to 125°C for the OPA322AIDBVR, restricting use in high-temperature environments. The MAX4130EUK+T provides superior input bias current performance (50 nA versus 0.2 pA) and lower supply current consumption (1 mA versus 1.6 mA).

Substitution Constraints:

Applications requiring minimum supply voltage below 2.7V must use the OPA322AIDBVR. Applications requiring operating temperatures above 85°C must use the OPA322AIDBVR. Applications requiring slew rates exceeding 4V/µs or gain bandwidth products exceeding 10 MHz must use the OPA322AIDBVR.

Frequently Asked Questions (FAQ)

Q: Can MAX4130EUK+T replace OPA322AIDBVR in all applications?

A: No. The MAX4130EUK+T cannot replace the OPA322AIDBVR in applications requiring: (1) supply voltages below 2.7V, (2) operating temperatures above 85°C, (3) slew rates exceeding 4V/µs, or (4) gain bandwidth products exceeding 10 MHz. Verify application requirements against the parameter comparison table before substitution.

Q: Are the packages physically identical?

A: Yes. Both the OPA322AIDBVR and MAX4130EUK+T use the SOT-23-5 package (SC-74A, SOT-753 case style) with identical pin configuration and surface mount footprint. PCB layout modifications are not required for mechanical substitution.

Q: What is the difference in input bias current between these devices?

A: The OPA322AIDBVR specifies 0.2 pA input bias current, while the MAX4130EUK+T specifies 50 nA. The MAX4130EUK+T exhibits approximately 250,000 times higher input bias current. Applications sensitive to input bias current effects must account for this difference in circuit design.

Q: Do both devices meet RoHS3 compliance?

A: Yes. Both the OPA322AIDBVR and MAX4130EUK+T are RoHS3 compliant and REACH unaffected, satisfying regulatory requirements for European and international markets.

Q: What is the moisture sensitivity difference?

A: The OPA322AIDBVR carries MSL 2 rating (1 Year shelf life under controlled conditions), while the MAX4130EUK+T carries MSL 1 rating (Unlimited shelf life). The MAX4130EUK+T provides superior moisture resistance and longer storage capability without baking requirements.

Q: Can I use MAX4130EUK+T in a 1.8V supply application?

A: No. The MAX4130EUK+T minimum supply voltage is 2.7V. Applications requiring 1.8V operation must use the OPA322AIDBVR.

Q: Which device should I select for high-temperature applications?

A: The OPA322AIDBVR supports operating temperatures to 125°C, while the MAX4130EUK+T is limited to 85°C. For applications exceeding 85°C, the OPA322AIDBVR is the required selection.