OPA211AIDG4 Equivalent & Substitute Parts

Part Overview

The OPA211AIDG4 is a general purpose operational amplifier manufactured by Texas Instruments, designed for rail-to-rail signal conditioning applications. This device features a single amplifier circuit in an 8-SOIC surface mount package with a gain bandwidth product of 80 MHz and supply voltage range of 4.5V to 36V.

The OPA211AIDG4 is currently discontinued at DiGi Electronics. Equivalent and substitute parts are available to maintain design continuity and ensure project completion. Substitute parts must match the electrical performance parameters and physical package specifications to ensure direct compatibility in existing circuit designs.

Substiute Parts

OPA211AIDG4

Texas InstrumentsIn Stock: 686OPA211AIDG4 Datasheet

Current PartRFQ

OPA211AID

Texas InstrumentsIn Stock: 2059OPA211AID Datasheet

MFR RecommendedRFQ

AD8226ARZ-RL

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the OPA211AIDG4 are selected based on strict electrical and mechanical compatibility criteria. The following parameters define acceptable substitution:

Primary Compatibility Criteria:

• Package type: 8-SOIC surface mount form factor
• Output configuration: Rail-to-rail output capability
• Supply voltage range: Minimum 4.5V to maximum 36V
• Operating temperature: -40°C to 125°C
• Number of circuits: Single amplifier circuit
• RoHS3 compliance and REACH unaffected status

Substitute Parts Identified:

1. OPA211AID (Texas Instruments) — Direct equivalent with identical electrical specifications. Differs only in packaging format (Tube vs. Digi-Reel). Product status is Active, providing long-term availability.

2. AD8226ARZ-RL (Analog Devices Inc.) — Functional substitute with different amplifier classification (Instrumentation vs. General Purpose). Meets package, supply voltage, temperature, and compliance requirements. Performance characteristics differ in slew rate, bandwidth, and supply current.

Parameter Comparison

Engineering Selection Recommendations

OPA211AID Selection: The OPA211AID is the primary recommended substitute for the discontinued OPA211AIDG4. This part maintains identical electrical specifications across all critical parameters including slew rate, gain bandwidth product, input bias current, input offset voltage, and supply current. Both devices are manufactured by Texas Instruments and share the same base product number (OPA211). The OPA211AID is currently in Active product status with 2042 units in stock, ensuring availability for immediate procurement. Packaging differs only in format (Tube vs. Digi-Reel), which does not affect electrical performance or PCB assembly compatibility. RoHS3 compliance and REACH unaffected status are maintained. This substitute provides direct functional replacement with no circuit redesign required.

AD8226ARZ-RL Selection: The AD8226ARZ-RL is a functional substitute suitable for applications where instrumentation amplifier characteristics are acceptable. This part meets all mechanical and compliance requirements (8-SOIC package, -40°C to 125°C operating range, RoHS3 compliant). However, significant electrical differences exist: slew rate is reduced to 0.6V/µs (versus 27V/µs), gain bandwidth product is 1.5 MHz (versus 80 MHz), and supply current is 0.35 mA (versus 3.6 mA). The AD8226ARZ-RL features lower input bias current (20 nA) and improved moisture sensitivity (MSL 1 vs. MSL 2). Selection of this substitute requires circuit analysis to confirm that reduced bandwidth and slew rate are compatible with the intended application. The AD8226ARZ-RL is currently in Active product status with 36400 units in stock.

Frequently Asked Questions (FAQ)

Q: Can the OPA211AID be used as a direct replacement for the OPA211AIDG4?

A: Yes. The OPA211AID is a direct electrical equivalent with identical performance specifications. The only difference is packaging format (Tube vs. Digi-Reel). Both devices are 8-SOIC surface mount packages with identical pin configurations and electrical characteristics. No circuit modifications are required.

Q: What are the key differences between OPA211AID and AD8226ARZ-RL?

A: The OPA211AID is a general purpose amplifier with 80 MHz bandwidth and 27V/µs slew rate. The AD8226ARZ-RL is an instrumentation amplifier with 1.5 MHz bandwidth and 0.6V/µs slew rate. The AD8226ARZ-RL consumes significantly less supply current (0.35 mA vs. 3.6 mA) and has lower input bias current (20 nA vs. 60 nA). Selection depends on application requirements for bandwidth and slew rate performance.

Q: Are all substitute parts in the same 8-SOIC package?

A: Yes. Both OPA211AID and AD8226ARZ-RL are packaged in 8-SOIC (0.154", 3.90mm Width) surface mount form factor, identical to the OPA211AIDG4. PCB footprints and assembly processes remain unchanged.

Q: What is the supply voltage compatibility range for these substitutes?

A: The OPA211AID operates from 4.5V to 36V, matching the OPA211AIDG4 specification. The AD8226ARZ-RL operates from 2.2V to 36V, providing a wider minimum supply voltage range. Both devices support the full 36V maximum supply voltage.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. Both OPA211AID and AD8226ARZ-RL are ROHS3 compliant and REACH unaffected, matching the compliance status of the OPA211AIDG4.

Q: Which substitute should be selected for high-speed applications?

A: The OPA211AID maintains the high-speed characteristics of the OPA211AIDG4 with 80 MHz gain bandwidth product and 27V/µs slew rate. The AD8226ARZ-RL is not suitable for high-speed applications due to its 1.5 MHz bandwidth and 0.6V/µs slew rate.

Q: What is the current availability status of these substitutes?

A: The OPA211AID is in Active product status with 2042 units in stock. The AD8226ARZ-RL is in Active product status with 36400 units in stock. Both parts are available for immediate procurement.