OPA3695IDBQ Equivalent & Substitute Parts

Part Overview

The OPA3695IDBQ is a current feedback amplifier integrated circuit manufactured by Texas Instruments, containing three independent amplifier circuits in a 16-SSOP surface mount package. This device is classified as Last Time Buy, indicating discontinued production with limited remaining inventory of 1114 pieces. The OPA3695IDBQ is designed for high-speed signal conditioning applications requiring current feedback topology with 2400V/µs slew rate and 1 GHz bandwidth capability.

Due to Last Time Buy status, identifying functionally compatible substitute components is essential for design continuity and long-term supply chain planning. Substitute parts must maintain compatibility across packaging, pin configuration, supply voltage ranges, and core amplifier characteristics.

Substiute Parts

OPA3695IDBQ

Texas InstrumentsIn Stock: 1185OPA3695IDBQ Datasheet

Current PartRFQ

OPA3692IDBQR

Texas InstrumentsIn Stock: 20432OPA3692IDBQR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The OPA3692IDBQR is identified as the manufacturer-recommended substitute for the OPA3695IDBQ. Substitution compatibility is determined by the following critical parameters:

Package Compatibility: Both devices utilize identical 16-SSOP surface mount packaging (0.154" width, 3.90mm), ensuring mechanical and electrical pin-to-pin compatibility on printed circuit boards.

Circuit Count: Both parts contain three independent amplifier circuits, maintaining functional equivalence for multi-channel applications.

Supply Voltage Range: The OPA3692IDBQR operates across 5V to 12V single supply and ±2.5V to ±6V dual supply configurations, overlapping with the OPA3695IDBQ supply span of 3.5V to 12V.

Mounting and Compliance: Both devices are surface mount components with ROHS3 compliance, identical MSL rating of 2 (1 Year), and matching REACH and ECCN classifications.

Functional Differentiation: The OPA3692IDBQR is specified as a video amplifier buffer with 280 MHz -3dB bandwidth, compared to the OPA3695IDBQ current feedback amplifier with 1 GHz bandwidth. This represents a functional difference in application class rather than a direct performance upgrade or downgrade.

Parameter Comparison

Engineering Selection Recommendations

Supply Chain Continuity: The OPA3695IDBQ is designated Last Time Buy with finite inventory (1114 pieces). The OPA3692IDBQR maintains Active product status with significantly higher availability (20400 pieces), supporting long-term design sustainability.

Compliance and Certification: Both devices carry identical regulatory certifications: ROHS3 compliance, REACH Unaffected status, and EAR99 ECCN classification. MSL rating of 2 (1 Year) is equivalent, ensuring identical moisture handling and storage requirements.

Package Compatibility: Identical 16-SSOP packaging ensures direct mechanical substitution without PCB redesign or layout modification.

Performance Trade-offs: The OPA3692IDBQR exhibits reduced -3dB bandwidth (280 MHz versus 1 GHz) and lower slew rate (2000V/µs versus 2400V/µs). These parameters must be evaluated against specific application frequency requirements. The OPA3692IDBQR provides higher output current per channel (190 mA versus 120 mA), suitable for applications requiring increased drive capability.

Supply Voltage Consideration: The OPA3692IDBQR minimum single supply voltage is 5V, compared to 3.5V for the OPA3695IDBQ. Applications operating below 5V single supply require retention of the OPA3695IDBQ or alternative sourcing strategies.

Frequently Asked Questions (FAQ)

Q: Can the OPA3692IDBQR directly replace the OPA3695IDBQ on existing PCBs?

A: Yes, from a mechanical and electrical pin perspective. Both devices use identical 16-SSOP packaging with matching pin assignments. However, functional differences in bandwidth and slew rate must be verified against application requirements before implementation.

Q: What is the primary functional difference between these two parts?

A: The OPA3695IDBQ is a current feedback amplifier optimized for high-speed applications with 1 GHz bandwidth and 2400V/µs slew rate. The OPA3692IDBQR is a video amplifier buffer with 280 MHz bandwidth and 2000V/µs slew rate, designed for lower-frequency signal conditioning and buffering applications.

Q: Are there supply voltage compatibility issues?

A: The OPA3692IDBQR requires minimum 5V single supply operation, while the OPA3695IDBQ operates from 3.5V minimum. Applications using 3.5V to 5V single supply cannot use the OPA3692IDBQR as a direct substitute without circuit redesign.

Q: Do both parts have identical moisture sensitivity requirements?

A: Yes. Both devices carry MSL rating of 2 (1 Year), requiring identical storage, handling, and reflow procedures. No additional moisture precautions are necessary when transitioning between these parts.

Q: Why is the OPA3695IDBQ designated Last Time Buy?

A: Last Time Buy status indicates Texas Instruments has discontinued production of this device. Existing inventory is available for purchase, but no future manufacturing runs are planned. The OPA3692IDBQR represents the active product line alternative for new designs.

Q: Which part should be selected for new designs?

A: For new designs, the OPA3692IDBQR is recommended due to Active product status and superior availability. However, if application requirements mandate 1 GHz bandwidth or 3.5V minimum supply operation, alternative high-speed amplifier families from Texas Instruments or other manufacturers must be evaluated.

Q: Is there a performance advantage to retaining the OPA3695IDBQ?

A: The OPA3695IDBQ provides higher bandwidth (1 GHz) and faster slew rate (2400V/µs), making it suitable for ultra-high-frequency signal conditioning. Applications requiring these performance characteristics should retain the OPA3695IDBQ while inventory permits, or identify alternative high-speed current feedback amplifiers.