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ref5045aidr

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by Ray

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

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Contents

README

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REF5045AIDR

Texas Instruments · Voltage Reference · SOIC-8

REF5045AIDR 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 DNC unconnected Do not connect. This pin must be left floating; do not tie to any other net, power, or ground.
2 VIN power_in Input supply voltage. Operating range VOUT+0.2 V up to 18 V (min 2.7 V for VOUT ≤ 2.5 V). Absolute max 18 V, min -0.2 V.
3 TEMP output Temperature monitoring pin. Provides a temperature-dependent output voltage with typical sensitivity of 2.64 mV/°C over −40°C to 125°C. High-impedance output; buffer before loading.
4 GND power_in Ground return for the device. Connect to the analog ground plane.
5 TRIM/NR input Output adjustment and noise reduction pin. Allows fine trim of VOUT via an external resistor divider, and lowers output noise when bypassed to GND with a capacitor (typ 1 µF). May be left floating if trim/NR is not used.
6 VOUT power_out Reference voltage output, nominally 4.5 V for the REF5045. Sources or sinks up to ±10 mA. Requires a 1 µF to 10 µF ceramic output capacitor to GND for stability and low noise.
7 NC unconnected No internal connection. Pin is not bonded internally; may be left floating or tied to GND.
8 DNC unconnected Do not connect. This pin must be left floating; do not tie to any other net, power, or ground.

Key specifications

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

Ordering variants

  • REF5045AIDR
  • REF5045AIDRIDGK
  • REF5045AIDRIDGKR
  • REF5045AIDRAIDGK
  • REF5045AIDRAIDGKR

CAD (KiCad official)

  • Symbol: REF5045AIDR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Texas Instruments datasheet (None pp, sha256 32f0fc27eb7cc7ff, 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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