OPA211AIDRG4 Equivalent & Substitute Parts

Part Overview

The OPA211AIDRG4 is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device features rail-to-rail output capability and is designed for applications requiring single-circuit amplification with wide supply voltage range. The OPA211AIDRG4 is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

OPA211AIDRG4

Texas InstrumentsIn Stock: 738OPA211AIDRG4 Datasheet

Current PartRFQ

AD627BRZ-R7

Analog Devices Inc.In Stock: 3912AD627BRZ-R7 Datasheet

MFR RecommendedRFQ

AD8226ARZ-RL

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPA211AIDRG4 is determined by the following critical parameters:

Package Compatibility: All substitute parts must use the 8-SOIC surface mount package to ensure direct PCB compatibility without layout modifications.

Electrical Characteristics: Substitute parts must maintain rail-to-rail output capability and operate within the supply voltage range of 4.5 V to 36 V minimum. Operating temperature range must support the -40°C to 125°C specification or equivalent.

Circuit Configuration: The substitute must provide a single-circuit amplifier configuration in a single package.

Compliance Requirements: All substitute parts must maintain ROHS3 compliance and EAR99 export classification.

The identified substitute parts are instrumentation amplifiers from Analog Devices Inc., which share the same package footprint, rail-to-rail output architecture, and overlapping supply voltage specifications. While these devices differ in amplifier topology (instrumentation versus general-purpose), they provide functional equivalence for applications requiring single-channel amplification in the specified package and voltage range.

Parameter Comparison

Engineering Selection Recommendations

AD8226ARZ-RL is the primary substitute for OPA211AIDRG4 applications requiring full operating temperature range coverage (-40°C to 125°C). This device maintains identical temperature specifications and is currently in active production status with high inventory availability (36,400 units). The AD8226ARZ-RL supports the full 36 V maximum supply voltage and provides rail-to-rail output in the same 8-SOIC package. ROHS3 compliance and EAR99 classification are maintained.

AD627BRZ-R7 serves as an alternative substitute for applications with reduced operating temperature requirements (maximum 85°C). This device offers superior input bias current performance (2 nA versus 60 nA in the original part) and significantly lower supply current consumption (60 µA versus 3.6 mA). The AD627BRZ-R7 is suitable for low-power applications and maintains the same package footprint and rail-to-rail output capability. ROHS3 compliance is confirmed.

Selection between these substitutes depends on specific application requirements regarding operating temperature range and power consumption constraints. Both devices are ROHS3 compliant and available in active production status.

Frequently Asked Questions (FAQ)

Q: Can AD8226ARZ-RL directly replace OPA211AIDRG4 without PCB modifications?

A: Yes. Both devices use identical 8-SOIC surface mount packaging with 0.154" width and 3.90mm dimensions. Pin-to-pin compatibility requires verification against specific application schematics, but the package footprint permits direct substitution without layout changes.

Q: What is the primary difference between the OPA211AIDRG4 and its substitutes?

A: The OPA211AIDRG4 is a general-purpose operational amplifier, while AD627BRZ-R7 and AD8226ARZ-RL are instrumentation amplifiers. Instrumentation amplifiers provide higher input impedance and superior common-mode rejection characteristics, making them suitable for precision measurement applications. Both topologies provide single-circuit rail-to-rail amplification in the same package.

Q: Does AD627BRZ-R7 operate across the full temperature range of the original part?

A: No. AD627BRZ-R7 operates from -40°C to 85°C, while OPA211AIDRG4 operates to 125°C. Applications requiring operation above 85°C must use AD8226ARZ-RL, which supports -40°C to 125°C.

Q: Are both substitute parts ROHS3 compliant?

A: Yes. Both AD627BRZ-R7 and AD8226ARZ-RL are ROHS3 compliant and maintain EAR99 export classification, matching the compliance profile of the discontinued OPA211AIDRG4.

Q: Which substitute offers lower power consumption?

A: AD627BRZ-R7 provides significantly lower supply current at 60 µA compared to 3.6 mA for the original part and 350 µA for AD8226ARZ-RL. This makes AD627BRZ-R7 suitable for battery-powered or low-power applications where temperature range permits.

Q: What is the supply voltage compatibility of the substitutes?

A: Both AD627BRZ-R7 and AD8226ARZ-RL support the maximum 36 V supply voltage of the original part. However, AD627BRZ-R7 has a minimum supply voltage of 2.2 V, while AD8226ARZ-RL also requires 2.2 V minimum. The original OPA211AIDRG4 requires 4.5 V minimum, so both substitutes offer greater flexibility in low-voltage applications.