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REF1933AIDDCR

Public Made by Adom

by adom

Texas Instruments Voltage Reference, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs ref1933aiddcr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
viewers ref1933aiddcr: viewers · Ray 27d ago
package.json Publish 0.1.0 · Ray 27d ago
page.json Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout") · Ray 11d ago
README.md ref1933aiddcr: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 15d ago
ref1933aiddcr-etched.fit.json ref1933aiddcr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
ref1933aiddcr-etched.glb ref1933aiddcr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
ref1933aiddcr-etched.step ref1933aiddcr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
ref1933aiddcr.glb Publish 0.1.0 · Ray 27d ago
ref1933aiddcr.kicad_mod Publish 0.1.0 · Ray 27d ago
ref1933aiddcr.kicad_sym Publish 0.1.0 · Ray 27d ago
ref1933aiddcr.lbr Publish 0.1.0 · Ray 27d ago
ref1933aiddcr.step Publish 0.1.0 · Ray 27d ago

REF1933AIDDCR

Texas Instruments · Voltage Reference · SOT-23-5

REF1933AIDDCR from Texas Instruments, in a SOT-23-5. 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 VBIAS output Bias voltage output equal to VREF/2 (1.65 V for REF1933). Used to bias bipolar signals into the midpoint of a single-supply ADC input range. Sources and sinks up to ±20 mA.
2 GND power_in Device ground return. All voltages are referenced to this pin.
3 EN input Enable input. Device is enabled when EN ≥ VIN − 0.7 V and placed in shutdown when EN ≤ 0.7 V. Shutdown current is typically 3.3 µA.
4 VIN power_in Input supply voltage. Recommended operating range VREF + 0.02 V to 5.5 V; absolute maximum 6 V. Dropout is 10 mV typical at IL = 0 mA.
5 VREF output Reference voltage output (3.3 V for REF1933). ±0.1% initial accuracy, 25 ppm/°C max temperature coefficient. Sources and sinks up to ±20 mA; stable with 0-10 µF output capacitor.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-23-5
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • REF1933AIDDCR
  • REF1933AIDDCT

CAD (KiCad official)

  • Symbol: REF1933AIDDCR
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: ref1933aiddcr-etched.step / ref1933aiddcr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ref1933aiddcr.step / ref1933aiddcr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (32 pp, sha256 193572512ed1817b, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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