OPA4684IPWR Equivalent & Substitute Parts

Part Overview

The OPA4684IPWR is a Current Feedback Amplifier (CFA) integrated circuit manufactured by Texas Instruments, containing four independent amplifier circuits in a 14-TSSOP surface mount package. This device is classified as Obsolete, indicating it has been discontinued by the manufacturer and is no longer in active production. The OPA4684IPWR was designed for high-speed signal conditioning applications requiring wide bandwidth and fast slew rate performance.

Due to its obsolete status, locating replacement inventory from original manufacturing sources becomes increasingly difficult. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications currently utilizing this component.

Substiute Parts

OPA4684IPWR

Texas InstrumentsIn Stock: 752OPA4684IPWR Datasheet

Current PartRFQ

OPA4684IPWT

Texas InstrumentsIn Stock: 2039OPA4684IPWT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the OPA4684IPWR are identified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution logic is based on the following key parameters that must remain identical:

Electrical Parameters (Must Match Exactly):

• Amplifier Type: Current Feedback
• Number of Circuits: 4
• Slew Rate: 780 V/µs
• Gain Bandwidth Product: 120 MHz
• -3dB Bandwidth: 95 MHz
• Current - Input Bias: 5 µA
• Voltage - Input Offset: 1.5 mV
• Current - Supply: 1.7 mA (x4 Channels)
• Current - Output / Channel: 160 mA
• Voltage - Supply Span: 2.8 V to 12 V
• Operating Temperature Range: -40°C to 85°C

Mechanical Parameters (Must Match Exactly):

• Package / Case: 14-TSSOP (0.173", 4.40mm Width)
• Mounting Type: Surface Mount
• Supplier Device Package: 14-TSSOP

Compliance Parameters (Must Match Exactly):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 2 (1 Year)
• REACH Status: REACH Unaffected

The OPA4684IPWT meets all these criteria and is classified as a parametric equivalent substitute for the OPA4684IPWR.

Parameter Comparison

Engineering Selection Recommendations

The OPA4684IPWT is a direct parametric equivalent substitute for the OPA4684IPWR. All electrical specifications, mechanical dimensions, and compliance certifications are identical between the two parts.

Primary Advantage of OPA4684IPWT: The OPA4684IPWT maintains Active product status with the manufacturer, ensuring long-term availability and continued support. This contrasts with the OPA4684IPWR, which is classified as Obsolete. Current inventory levels for the OPA4684IPWT (1973 pieces) exceed those of the OPA4684IPWR (687 pieces), providing improved supply chain security.

Compliance and Certification: Both parts carry identical RoHS3 compliance, REACH Unaffected status, and Moisture Sensitivity Level 2 (1 Year) ratings. No additional qualification or testing is required from a regulatory or environmental standpoint.

Application Compatibility: The OPA4684IPWT operates within the identical electrical performance envelope as the OPA4684IPWR. Pin configuration, package footprint, and thermal characteristics remain unchanged. Direct board-level substitution is supported without circuit redesign.

Supply Chain Continuity: For applications currently using the OPA4684IPWR, transition to the OPA4684IPWT ensures continued component availability and eliminates obsolescence risk associated with discontinued parts.

Frequently Asked Questions (FAQ)

Q: Can the OPA4684IPWT be used as a direct replacement for the OPA4684IPWR on existing PCBs?

A: Yes. The OPA4684IPWT is a direct parametric equivalent. All electrical specifications, pin assignments, and package dimensions are identical. No PCB modifications or circuit redesign are required.

Q: What is the difference between OPA4684IPWR and OPA4684IPWT?

A: The primary difference is product status. The OPA4684IPWR is Obsolete, while the OPA4684IPWT is Active. All electrical and mechanical parameters are identical. The suffix designations (IPWR vs. IPWT) reflect different manufacturing or distribution batches, but the core device specifications remain unchanged.

Q: Why is the OPA4684IPWR classified as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production of this specific part number. Texas Instruments has transitioned to the OPA4684IPWT for ongoing production and support.

Q: Are there any performance differences between these parts?

A: No. Both parts deliver identical electrical performance across all specified parameters: 780 V/µs slew rate, 120 MHz gain bandwidth product, 95 MHz -3dB bandwidth, and all other electrical characteristics.

Q: What is the package type for both parts?

A: Both the OPA4684IPWR and OPA4684IPWT use the 14-TSSOP package (0.173" width, 4.40mm). This is a surface mount package suitable for automated assembly processes.

Q: Are both parts RoHS compliant?

A: Yes. Both the OPA4684IPWR and OPA4684IPWT are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: Both parts carry MSL 2 (1 Year) rating. This indicates standard moisture sensitivity with a one-year floor life when stored in appropriate conditions.

Q: Which part should I specify for new designs?

A: The OPA4684IPWT should be specified for new designs. As an Active product with higher inventory availability, it ensures long-term supply chain reliability and manufacturer support.

Q: Is the OPA4684IPWT available in higher quantities?

A: Yes. Current inventory for the OPA4684IPWT is 1973 pieces compared to 687 pieces for the OPA4684IPWR, providing improved availability for volume production requirements.