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OPA277U

Public Made by Adom

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Texas Instruments Precision OpAmps, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

componentop-amp-cmpopa277u
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Contents

README

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OPA277U

Texas Instruments · Precision OpAmps · SOIC-8

OPA277U from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 Offset Trim input Input offset voltage trim pin. Connect a 10 kΩ potentiometer between pins 1 and 8 with the wiper to V- to adjust the initial input offset voltage. Leave floating if not used.
2 -In input Inverting input of the operational amplifier. High-impedance analog input with typical bias current of 1 nA maximum.
3 +In input Noninverting input of the operational amplifier. High-impedance analog input with typical bias current of 1 nA maximum.
4 V- power_in Negative (lowest) power supply. Operating range from -2 V to -18 V for split-supply operation, referenced to V+ across a total supply of 4 V to 36 V.
5 NC unconnected No internal connection. Can be left floating.
6 Output output Operational amplifier output. Class-AB output stage capable of driving typical loads with low distortion; short-circuit protected.
7 V+ power_in Positive (highest) power supply. Operating range from +2 V to +18 V for split-supply operation; total V+ to V- supply span 4 V to 36 V.
8 Offset Trim input Input offset voltage trim pin. Connect a 10 kΩ potentiometer between pins 1 and 8 with the wiper to V- to adjust the initial input offset voltage. Leave floating if not used.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-8
Category Op-amp/Cmp
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • OPA277UU
  • OPA277UP
  • OPA277UDRM

CAD (KiCad official)

  • Symbol: OPA277U
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: opa277u-etched.step / opa277u-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); opa277u.step / opa277u.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (43 pp, sha256 0d85011c5df09178, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF