component

ref5040aidr

Public Made by Adom

by adom

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

componentpmicref5040aidr
Overview Files Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

3D Model

Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Contents

README

markdown

REF5040AIDR

Texas Instruments · Voltage Reference · SOIC-8

REF5040AIDR 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 is used internally by the factory; it must be left floating in the application. Do not tie to ground, supply, or any other net.
2 VIN power_in Positive supply input. Operating range is (VOUT + 0.2 V) up to +18 V (minimum 2.7 V for VOUT ≤ 2.5 V). Bypass with 1 µF to 10 µF to GND close to the pin.
3 TEMP output Temperature-proportional voltage output. VTEMP ≈ 509 mV + 2.64 mV/°C · T(°C) with ~60 kΩ source impedance. Buffer with a low-drift op-amp (e.g. OPA333/335/376) before driving any load; loading directly introduces measurement error but does not affect VOUT.
4 GND power_in Device ground / 0 V reference. All voltages (VIN, VOUT, TRIM/NR, TEMP) are referred to this pin.
5 TRIM/NR bidirectional Trim and noise-reduction pin - provides access to the internal bandgap node. Connect a 1 µF (or larger) capacitor to GND to form a low-pass filter with the internal 60 kΩ/… resistor network (fc ≈ 10-20 Hz), halving output noise. Alternatively, drive with an external resistor network to trim VOUT by ±15 mV. Leave floating if unused.
6 VOUT output Precision reference voltage output - 4.096 V nominal for REF5040. Load capacitor CL = 1 µF to 50 µF to GND required for stability; ESR of CL must be ≤ 1.5 Ω (recommended 1-1.5 Ω for lowest noise). Can source and sink up to ±10 mA.
7 DNC unconnected Do Not Connect. Factory-use pin; must be left floating. Do not tie to ground, supply, or any other net.
8 NC unconnected No Internal Connection. This pin has no bond to the die and may be left floating or tied to any convenient net (though best practice is to leave it open).

Key specifications

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

Ordering variants

  • REF5040AIDR
  • REF5040AIDRAIDT
  • REF5040AIDRIDT
  • REF5040AIDRAIDGK
  • REF5040AIDRAIDGKR
  • REF5040AIDRIDGK
  • REF5040AIDRIDGKR

CAD (KiCad official)

  • Symbol: REF5040AIDR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: ref5040aidr-etched.step / ref5040aidr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ref5040aidr.step / ref5040aidr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (None pp, sha256 3a122a4697547349, 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

Open full view ↗
Loads on click. Unloads only if this page sits in the background.

PCB Footprint

Open full view ↗
Loads on click. Unloads only if this page sits in the background.

Datasheet

Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Download PDF