OPA211AIDR Equivalent & Substitute Parts

Part Overview

The OPA211AIDR is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device is classified as a rail-to-rail output amplifier suitable for applications requiring moderate bandwidth and low input offset voltage. The part is currently in active production status with robust inventory availability.

Substitute parts are identified when equivalent functional performance can be achieved within the specified electrical and mechanical constraints of the application. Substitution becomes necessary due to supply chain considerations, inventory availability, or specific application requirements that align with alternative part specifications.

Substiute Parts

OPA211AIDR

Texas InstrumentsIn Stock: 4374OPA211AIDR Datasheet

Current PartRFQ

AD8226ARZ-RL

Analog Devices Inc.In Stock: 36415AD8226ARZ-RL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPA211AIDR is evaluated based on the following critical parameters that define functional equivalence:

Mechanical Compatibility:

• Package type: 8-SOIC surface mount form factor
• Package dimensions: 0.154" width, 3.90mm width specification
• Mounting type: Surface mount

Electrical Compatibility:

• Output configuration: Rail-to-rail output capability
• Number of circuits: Single circuit per package
• Supply voltage range: Minimum 4.5V to maximum 36V operation
• Operating temperature range: -40°C to 125°C
• Output current capability: Minimum 30mA per channel

Regulatory & Environmental:

• RoHS3 compliance requirement
• REACH unaffected status
• ECCN classification: EAR99

The AD8226ARZ-RL is identified as a manufacturer-recommended substitute. While this part operates as an instrumentation amplifier rather than a general-purpose amplifier, it satisfies the mechanical package requirements, maintains rail-to-rail output capability, operates within the specified supply voltage and temperature ranges, and meets all regulatory compliance standards.

Parameter Comparison

Engineering Selection Recommendations

Both the OPA211AIDR and AD8226ARZ-RL maintain active production status with established supply chains. Selection between these parts is determined by application-specific electrical requirements and compliance obligations.

OPA211AIDR Selection Criteria:

• Applications requiring general-purpose amplifier topology
• Systems demanding higher slew rate performance (27V/µs)
• Designs with higher gain-bandwidth product requirements (80MHz)
• Applications requiring higher output current per channel (30mA)
• Circuits with minimum supply voltage requirement of 4.5V or higher

AD8226ARZ-RL Selection Criteria:

• Applications compatible with instrumentation amplifier architecture
• Systems requiring lower supply current consumption (0.35mA vs 3.6mA)
• Designs operating from lower minimum supply voltages (2.2V)
• Applications with lower output current requirements (13mA)
• Circuits requiring lower moisture sensitivity (MSL 1 vs MSL 2)

Both parts satisfy ROHS3 compliance, REACH unaffected status, and operate across the full -40°C to 125°C temperature range. Both are housed in identical 8-SOIC surface mount packages with matching 0.154" width specification.

Frequently Asked Questions (FAQ)

Q: Can the AD8226ARZ-RL directly replace the OPA211AIDR in all applications?

A: Direct replacement is limited to applications where instrumentation amplifier topology is functionally equivalent to general-purpose amplifier topology. The AD8226ARZ-RL exhibits lower slew rate (0.6V/µs vs 27V/µs), lower gain-bandwidth product (1.5MHz vs 80MHz), and lower output current capability (13mA vs 30mA). Applications requiring these higher performance parameters must use the OPA211AIDR.

Q: Are the package dimensions identical between these parts?

A: Both parts use 8-SOIC surface mount packages with identical dimensions: 0.154" width and 3.90mm width specification. PCB footprints are interchangeable.

Q: What is the difference in supply voltage requirements?

A: The OPA211AIDR requires minimum 4.5V supply voltage, while the AD8226ARZ-RL operates from minimum 2.2V. Both support maximum 36V supply voltage. Applications using lower supply voltages must use the AD8226ARZ-RL.

Q: How do the input bias current specifications compare?

A: The OPA211AIDR specifies 60nA input bias current, while the AD8226ARZ-RL specifies 20nA. The AD8226ARZ-RL exhibits lower input bias current, which may be advantageous in high-impedance input circuits.

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

A: The OPA211AIDR is rated MSL 2 (1 Year), requiring controlled moisture exposure for one year after packaging. The AD8226ARZ-RL is rated MSL 1 (Unlimited), allowing indefinite storage without moisture control. This affects handling, storage, and shelf-life management procedures.

Q: Are both parts RoHS3 compliant?

A: Both the OPA211AIDR and AD8226ARZ-RL are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.