OPA2228UG4 Equivalent & Substitute Parts

Part Overview

The OPA2228UG4 is a general purpose operational amplifier manufactured by Texas Instruments, featuring dual circuits in an 8-SOIC surface mount package. This device is classified as discontinued at DiGi Electronics, necessitating identification of active equivalent and substitute components for ongoing design requirements and production continuity. The OPA2228UG4 serves applications requiring low input bias current, low input offset voltage, and moderate bandwidth performance within the 5V to 36V supply range.

Substiute Parts

OPA2228UG4

Texas InstrumentsIn Stock: 686OPA2228UG4 Datasheet

Current PartRFQ

LM833DT

STMicroelectronicsIn Stock: 166636LM833DT Datasheet

MFR RecommendedRFQ

MC33077DR2G

onsemiIn Stock: 7216MC33077DR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPA2228UG4 is determined by alignment across the following critical parameters: amplifier type classification, number of circuits, package form factor, supply voltage range, operating temperature range, and compliance certifications. The OPA2228UG4 operates as a general purpose amplifier with dual circuits in an 8-SOIC package, supporting supply voltages from 5V to 36V across the -40°C to 85°C temperature range.

Two substitute parts are identified:

MC33077DR2G (onsemi): Maintains general purpose amplifier classification with dual circuits in 8-SOIC packaging. Electrical parameters including slew rate (11V/µs), supply voltage range (5V to 36V), and operating temperature (-40°C to 85°C) align with the OPA2228UG4. This part is currently active in production.

LM833DT (STMicroelectronics): Classified as an audio amplifier with dual circuits in 8-SO packaging. While package dimensions match (8-SOIC, 0.154", 3.90mm width), this part exhibits reduced slew rate (7V/µs), lower gain bandwidth product (15 MHz), and maximum supply voltage limited to 30V. Operating temperature extends to 105°C. This part is currently active in production.

Parameter Comparison

Engineering Selection Recommendations

MC33077DR2G (onsemi) is the primary substitute for the OPA2228UG4. Both devices are classified as general purpose amplifiers with identical dual-circuit configuration and 8-SOIC packaging. Electrical performance parameters align closely: slew rate (11V/µs), supply voltage range (5V to 36V), and operating temperature range (-40°C to 85°C) are equivalent. The MC33077DR2G demonstrates superior gain bandwidth product (37 MHz versus 33 MHz) and lower supply current (3.5mA versus 3.7mA). Both parts maintain ROHS3 compliance and identical ECCN/HTSUS classifications. The MC33077DR2G is currently in active production with 7134 units in stock.

LM833DT (STMicroelectronics) functions as a secondary substitute with functional compatibility limitations. While package form factor and mounting type are identical, this device is classified as an audio amplifier rather than general purpose. Electrical performance is reduced: slew rate (7V/µs), gain bandwidth product (15 MHz), and maximum supply voltage (30V) are lower than the OPA2228UG4. Input bias current (300 nA) and input offset voltage (300 µV) are significantly higher. The LM833DT is suitable only for applications where reduced bandwidth and higher input offset voltage are acceptable. This part is currently in active production with 166607 units in stock.

Frequently Asked Questions (FAQ)

Q: Can the MC33077DR2G directly replace the OPA2228UG4 in all applications?

A: The MC33077DR2G is electrically and mechanically compatible with the OPA2228UG4 for general purpose amplifier applications. Both devices share identical package form factor (8-SOIC), supply voltage range (5V to 36V), operating temperature range (-40°C to 85°C), and amplifier classification. Pin configuration and functional behavior are equivalent. The MC33077DR2G is the recommended direct substitute.

Q: What are the limitations of using LM833DT as a substitute?

A: The LM833DT is classified as an audio amplifier and exhibits reduced electrical performance compared to the OPA2228UG4. Slew rate is reduced from 11V/µs to 7V/µs, gain bandwidth product is reduced from 33 MHz to 15 MHz, and maximum supply voltage is limited to 30V (versus 36V). Input bias current and input offset voltage are significantly higher. The LM833DT is suitable only for low-bandwidth audio applications where these performance reductions are acceptable.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The OPA2228UG4, MC33077DR2G, and LM833DT are all ROHS3 compliant. All three parts are unaffected by REACH regulations and carry identical ECCN (EAR99) and HTSUS (8542.33.0001) classifications.

Q: What is the difference in moisture sensitivity between the main part and substitutes?

A: The OPA2228UG4 has Moisture Sensitivity Level (MSL) 3 (168 hours). The MC33077DR2G and LM833DT both have MSL 1 (Unlimited), indicating superior moisture resistance and reduced handling constraints during storage and assembly.

Q: Are the packages physically identical?

A: All three parts use 8-SOIC surface mount packages with identical dimensions (0.154", 3.90mm width). Physical footprint and PCB layout compatibility are equivalent. The supplier device package designation differs slightly (8-SOIC for OPA2228UG4 and MC33077DR2G; 8-SO for LM833DT), but physical dimensions and pin spacing are identical.

Q: Which substitute should be selected for new designs?

A: The MC33077DR2G is the recommended substitute for new designs requiring general purpose amplifier functionality. This part maintains full electrical and functional equivalence with the OPA2228UG4 while offering active production status, superior availability (7134 units in stock), and improved moisture sensitivity characteristics.