component

ADR421ARMZ

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Analog Devices Voltage References, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management icsadr421armzfactory-2.0.0extractor-text

Verified ADR421ARMZ

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier mfr, 8 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ADR421ARMZ · MSOP-8 · 8 pins
  • ✓copper: 8 copper pads, none touching another net
  • ✓datasheet: all 8 pin names found in the 24-page datasheet
  • ✓distributor: lcsc C659530, digikey 505-ADR421ARMZ-ND, mouser 584-ADR421ARMZ
  • ✓family: MSOP-8_3x3mm_P0.65mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-j0x4i0th/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.22)
  • ✓pads: 8 pins = 8 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 8 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ adr421armz.kicad_sym✓ adr421armz.kicad_mod✓ adr421armz.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 4d ago
viewers adr421armz: viewers · Ray 4d ago
adr421armz-etched.glb Publish 0.1.0 · Ray 4d ago
adr421armz-etched.step adr421armz: factory component page (tier=mfr) · Ray 4d ago
adr421armz-hero.glb adr421armz: hero GLB from the etched model (keeps the MPN mark) · Ray 4d ago
adr421armz-hero.overlay.json Publish 0.1.0 · Ray 4d ago
adr421armz.glb Publish 0.1.0 · Ray 4d ago
adr421armz.kicad_mod Publish 0.1.0 · Ray 4d ago
adr421armz.kicad_sym Publish 0.1.0 · Ray 4d ago
adr421armz.lbr Publish 0.1.0 · Ray 4d ago
adr421armz.step Publish 0.1.0 · Ray 4d ago
package.json Publish 0.1.0 · Ray 4d ago
page.json Set visibility: public · Ray 4d ago
README.md Publish 0.1.0 · Ray 4d ago
verification.json Verified: Published by the parts factory: tier mfr, 8 pins · Ray 4d ago

ADR421ARMZ

Analog Devices · Voltage References · MSOP-8

ADR421ARMZ from Analog Devices, in a MSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 TP passive Test pin reserved for factory testing; it has actual internal connections, and users should not connect anything to it or the device may not function properly.
2 VIN power_in Input voltage pin; the ADR421 is specified for a 4.5 V to 18 V input range, with an 18 V absolute maximum supply rating.
3 NIC unconnected No internal connection; the pin has no internal connections.
4 GND power_in Ground pin, defined as 0 V.
5 TRIM passive Trim terminal that adjusts the output voltage over a ±0.5% range without affecting the temperature coefficient; trim network resistors and potentiometer should be low temperature coefficient types, preferably <100 ppm/°C.
6 VOUT power_out Voltage reference output, specified at 2.50 V for the ADR421 with up to 10 mA output current.
7 NIC unconnected No internal connection; the pin has no internal connections.
8 TP passive Test pin reserved for factory testing; it has actual internal connections, and users should not connect anything to it or the device may not function properly.

Key specifications

Parameter Value
Manufacturer Analog Devices
Package MSOP-8
Category Power Management ICs
Pins 8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Output voltage, A Grade VOUT 2.497 2.5 2.503 V 5
Initial accuracy, A Grade (mV) VOUTERR -3 3 mV 5
Initial accuracy, A Grade (%) VOUTERR -0.12 0.12 % 5
Temperature coefficient, A Grade TCVOUT 10 ppm/°C −40°C < TA < +125°C 5
Supply voltage headroom VIN − VOUT 2 V 5
Quiescent current IIN 390 500 µA No load 5
Quiescent current over temperature IIN 600 µA −40°C < TA < +125°C 5
Line regulation ∆VOUT/∆VIN 10 35 ppm/V VIN = 5 V to 18 V, −40°C < TA < +125°C 5
Output trim adjustment range -0.5 0.5 % Adjusted via TRIM terminal 18
Supply voltage 18 V 8
Operating temperature range -40 125 °C 8
Storage temperature range -65 150 °C 8
Junction temperature range -65 150 °C 8
Lead temperature (soldering) 300 °C Soldering, 60 sec 8
Load regulation ∆VOUT/∆IL 70 ppm/mA IL = 0 mA to 10 mA, −40°C < TA < +125°C 5
Voltage noise, 0.1 Hz to 10 Hz eN p-p 1.75 µV p-p 0.1 Hz to 10 Hz 5
Voltage noise density eN 80 nV/√Hz 1 kHz 5
Turn-on settling time tR 10 µs 5
Long-term stability ∆VOUT 50 ppm 1000 hours 5
Output voltage hysteresis VOUT_HYS 40 ppm 5
Ripple rejection ratio RRR -75 dB fIN = 1 kHz 5
Short circuit to GND ISC 27 mA 5
Thermal resistance junction-to-ambient, 8-Lead MSOP θJA 190 °C/W 8-Lead MSOP (RM) 8
Thermal resistance junction-to-case, 8-Lead MSOP θJC 44 °C/W 8-Lead MSOP (RM) 8

CAD (KiCad official)

  • Symbol: ADR421ARMZ
  • Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
  • 3D model: MSOP-8 (KiCad packages3D, STEP)
  • 3D model files: adr421armz-etched.step / adr421armz-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); adr421armz.step / adr421armz.glb are the bare package body.

Provenance

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

  • Datasheet: Analog Devices datasheet (24 pp, sha256 a3f954c509a578f6, retrieved 2026-10-30, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF