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ref02au

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Texas Instruments Voltage Reference, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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README

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REF02AU

Texas Instruments · Voltage Reference · SOIC-8

REF02AU 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 NC unconnected No internal connection. Leave floating or tie to ground per board policy.
2 VIN power_in Positive supply input. Accepts +8V to +40V (absolute maximum +40V). Typical quiescent current is 1.0mA (1.4mA max) with no load. A 0.1µF bypass capacitor to GND is recommended per the typical application circuit.
3 Temp output Temperature-proportional voltage output. Typically 630mV at +25°C with a temperature coefficient of approximately 2.1mV/°C (−55°C to +125°C). Pin is insensitive to capacitive loading; the temperature voltage is modified by 7mV per µA of loading, so keep the load current very small.
4 GND power_in Device ground return. Common reference for VIN, VOUT, and the Trim network.
5 Trim input Output trim/adjust input. Connect the wiper of a 10kΩ potentiometer wired between VOUT (pin 6) and GND (pin 4) to this pin to trim the output over approximately ±150mV (±3% typ, ±6% max) around +5V. Leave floating if trimming is not used. Adjustment has minimal effect on temperature stability (~0.7ppm/°C per 100mV of trim).
6 VOUT output Precision +5V reference output (±15mV initial accuracy for REF02A grade). Sources up to 21mA typ and sinks up to −0.5mA typ; short-circuit protected (~30mA typ to GND or VIN). Line regulation 0.010%/V max, load regulation 0.010%/mA max.
7 NC unconnected No internal connection. Leave floating or tie to ground per board policy.
8 NC unconnected No internal connection. Leave floating or tie to ground per board policy.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-8
Category PMIC
Pins 8

Ordering variants

  • REF02AU
  • REF02AUREF02BU
  • REF02AU/2K5
  • REF02AUREF02BU/2K5
  • REF02AUE4
  • REF02AUREF02BUE4
  • REF02AUG4
  • REF02AUREF02BUG4
  • REF02AU/2K5E4
  • REF02AUREF02BU/2K5E4
  • REF02AUREF02AP
  • REF02AUREF02BP
  • REF02AUREF02APG4
  • REF02AUREF02BPG4

CAD (KiCad official)

  • Symbol: REF02AU
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: ref02au-etched.step / ref02au-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ref02au.step / ref02au.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (None pp, sha256 8353fd2e8d0e5362, 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

Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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