All Alternatives

Alternatives to Texas Instruments OPA655U

Texas Instruments OPA655U and its qualified second sources, compared on form, fit and function, stock, lifecycle and price — the same checks Parter runs inside a BOM.

Equivalent and substitute parts for Texas Instruments OPA655U

OPA655U compared against its qualified second sources
OPA655UTexas InstrumentsOPA656UTexas Instruments
FFF CompatibilityThe pinouts are not fully identical; the source part utilizes Pins 5 and 8 as secondary power supply pins (+VS2 and -VS2) for noise/distortion optimization, whereas the alternative leaves these pins as No Connection (NC).Both parts are housed in standard 8-pin SOIC (SO-8) packages with equivalent physical dimensions and mounting styles.The Gain Bandwidth Product (GBW) is slightly lower (230 MHz vs 240 MHz). Additionally, the alternative lacks the secondary power supply pins of the original, which are designed to reduce package lead inductance and optimize high-frequency distortion.
AI Summary

OPA655U by Texas Instruments: Voltage Feedback Amplifier 1 Circuit 8-SOIC.

The OPA656U is a highly compatible alternative to the OPA655U, offering improvements in input bias current, offset voltage, slew rate, and unity-gain bandwidth. However, it features a slightly lower Gain Bandwidth Product (230 MHz vs 240 MHz) and lacks the secondary power supply pins (Pins 5 and 8 are NC on the alternative vs ±VS2 on the source) used for distortion reduction.

  • Footprint-compatible 8-SOIC package
  • Higher unity-gain bandwidth: 550 MHz vs 400 MHz
  • Lower input bias current: ±20 pA max vs -125 pA max
  • Slightly lower Gain Bandwidth Product (GBW): 230 MHz vs 240 MHz
  • Lacks the secondary power supply pins (Pins 5 and 8 are NC vs -VS2 and +VS2) used on the source to minimize package lead inductance and optimize distortion
Lifecycle StatusObsoleteObsolete
Market AvailabilityDiscontinuedIn stock
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