OPA2677H Equivalent & Substitute Parts

Part Overview

The OPA2677H is a current feedback amplifier integrated circuit manufactured by Texas Instruments, containing two operational amplifier circuits in an 8-HSOP surface mount package. This device is classified as obsolete, indicating it is no longer in active production. The OPA2677H was designed for high-speed signal conditioning applications requiring dual-channel amplification with a 2 GHz gain bandwidth product and 2000V/µs slew rate. Due to its obsolete status, equivalent substitute parts from active product lines are necessary for new designs and ongoing production requirements.

Substiute Parts

OPA2677H

Texas InstrumentsIn Stock: 8867OPA2677H Datasheet

Current PartRFQ

AD8012ARZ

Analog Devices Inc.In Stock: 1686AD8012ARZ Datasheet

MFR RecommendedRFQ

AD8012ARZ-REEL

Analog Devices Inc.In Stock: 2085AD8012ARZ-REEL Datasheet

MFR RecommendedRFQ

AD8012ARZ-REEL7

Analog Devices Inc.In Stock: 2263AD8012ARZ-REEL7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OPA2677H is determined by the following critical parameters that must align between the main part and substitute candidates:

Primary Substitution Criteria:

• Amplifier Type: Current Feedback (required match)
• Number of Circuits: 2 (dual-channel configuration required)
• Mounting Type: Surface Mount (required match)
• Package / Case: 8-SOIC with 0.154" (3.90mm) width (physical compatibility required)
• Operating Temperature Range: -40°C to 85°C (required match)
• RoHS3 Compliance: Required for regulatory compatibility
• Supply Voltage Range: Minimum 5V to Maximum 12V (operational envelope)

Secondary Performance Parameters:

• Slew Rate: 2000V/µs (OPA2677H specification)
• Gain Bandwidth Product: 2 GHz (OPA2677H specification)
• -3dB Bandwidth: 250 MHz (OPA2677H specification)
• Current - Output / Channel: 500 mA (OPA2677H specification)

The AD8012ARZ series (AD8012ARZ, AD8012ARZ-REEL, AD8012ARZ-REEL7) from Analog Devices Inc. satisfies the primary substitution criteria as active product alternatives. All three variants share identical electrical specifications and differ only in packaging format (Tube, Tape & Reel, and Cut Tape & Digi-Reel respectively).

Parameter Comparison

Engineering Selection Recommendations

The AD8012ARZ series represents the primary substitute option for the obsolete OPA2677H. Selection among the three AD8012ARZ variants depends on procurement and assembly requirements:

AD8012ARZ (Tube Packaging): Suitable for low-volume applications, prototype development, and manual assembly processes. Inventory availability: 1583 pieces.

AD8012ARZ-REEL (Tape & Reel Packaging): Appropriate for automated pick-and-place assembly operations requiring standard reel formats. Inventory availability: 2000 pieces.

AD8012ARZ-REEL7 (Cut Tape & Digi-Reel Packaging): Designed for mixed-volume production runs combining manual and automated assembly capabilities. Inventory availability: 2200 pieces.

All three variants maintain identical electrical specifications and comply with ROHS3 and REACH regulatory requirements. The AD8012ARZ series demonstrates improved moisture sensitivity characteristics (MSL 1 with unlimited shelf life) compared to the OPA2677H (MSL 2 with 1-year shelf life), providing enhanced long-term storage reliability.

The AD8012ARZ series exhibits higher slew rate (2250V/µs versus 2000V/µs) and wider -3dB bandwidth (350 MHz versus 250 MHz), delivering superior high-frequency performance. However, the gain bandwidth product specification differs significantly (75 MHz versus 2 GHz), and output current per channel is reduced (125 mA versus 500 mA). These differences require circuit-level evaluation to confirm functional compatibility within specific application contexts.

Frequently Asked Questions (FAQ)

Q: Can AD8012ARZ directly replace OPA2677H in existing designs?

A: Physical and electrical compatibility exists for the dual-channel current feedback amplifier topology. Both devices operate within the -40°C to 85°C temperature range, share 8-SOIC packaging, and comply with ROHS3 standards. However, the reduced output current per channel (125 mA versus 500 mA) and different gain bandwidth product (75 MHz versus 2 GHz) require circuit analysis to confirm functional equivalence for specific applications.

Q: What is the difference between AD8012ARZ, AD8012ARZ-REEL, and AD8012ARZ-REEL7?

A: These three part numbers represent identical electrical devices differentiated by packaging format only. AD8012ARZ is supplied in Tube packaging for manual handling. AD8012ARZ-REEL is supplied in standard Tape & Reel format for automated assembly. AD8012ARZ-REEL7 is supplied in Cut Tape & Digi-Reel format for flexible production volumes. Electrical specifications, performance characteristics, and compliance certifications are identical across all three variants.

Q: Why is the OPA2677H classified as obsolete?

A: The OPA2677H is no longer manufactured by Texas Instruments and has been discontinued from active production. Existing inventory may be available through authorized distributors, but long-term supply cannot be guaranteed. The AD8012ARZ series from Analog Devices Inc. is actively manufactured and represents the recommended substitute for new designs and ongoing production.

Q: Are there supply voltage compatibility concerns?

A: The OPA2677H requires a minimum supply voltage of 5V, while the AD8012ARZ operates with a minimum supply voltage of 3V. Both devices support maximum supply voltage of 12V. Designs operating at supply voltages below 5V require alternative substitutes. Designs operating between 5V and 12V are compatible with both devices.

Q: What are the moisture sensitivity implications?

A: The OPA2677H carries MSL 2 rating with 1-year shelf life, requiring controlled storage conditions. The AD8012ARZ series carries MSL 1 rating with unlimited shelf life, providing superior moisture resistance and extended storage capability without environmental controls. This represents an improvement in long-term reliability and supply chain flexibility.

Q: How do the input bias current specifications compare?

A: The OPA2677H specifies 10 µA input bias current, while the AD8012ARZ series specifies 3 µA. The lower input bias current of the AD8012ARZ reduces input offset drift and improves precision in high-impedance signal conditioning applications.

Q: Are packaging dimensions identical between OPA2677H and AD8012ARZ?

A: Both devices use 8-SOIC surface mount packages with 0.154" (3.90mm) width, ensuring physical compatibility on printed circuit boards. The OPA2677H includes an exposed pad variant, while the AD8012ARZ standard package does not specify exposed pad configuration. PCB layout modifications may be required if thermal management through exposed pad connection was utilized in the original OPA2677H design.