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ADR421BRZ-REEL7

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

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ADR421BRZ-REEL7

Analog Devices · Voltage Reference · SOIC-8

ADR421BRZ-REEL7 from Analog Devices, in a SOIC-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 unconnected Test pin: an actual connection exists but is reserved for factory test, and the user should not connect anything to it or the device may not function correctly.
2 VIN power_in Input voltage; the ADR421 operating input range is 4.5 V to 18 V, and VIN must be at least 2 V above VOUT.
3 NIC unconnected No internal connection.
4 GND power_in Ground pin, 0 V.
5 TRIM input Trim pin that adjusts the output voltage within ±0.5% without affecting the temperature coefficient.
6 VOUT power_out Voltage reference output; the ADR421 nominal output is 2.50 V with a 10 mA maximum output current capability.
7 NIC unconnected No internal connection.
8 TP unconnected Test pin: an actual connection exists but is reserved for factory test, and the user should not connect anything to it or the device may not function correctly.

Key specifications

Parameter Value
Manufacturer Analog Devices
Package SOIC-8
Category Power Management (PMIC)
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 (B grade) VOUT 2.499 2.5 2.501 V VIN = 5.0 V to 15.0 V, TA = 25°C unless otherwise noted 4
Initial accuracy (B grade) VOUTERR -1 1 mV VIN = 5.0 V to 15.0 V, TA = 25°C unless otherwise noted 4
Initial accuracy (B grade) VOUTERR -0.04 0.04 % VIN = 5.0 V to 15.0 V, TA = 25°C unless otherwise noted 4
Temperature coefficient (B grade) TCVOUT 1 3 ppm/°C −40°C < TA < +125°C 4
Supply voltage headroom VIN − VOUT 2 V 4
Line regulation ΔVOUT/ΔVIN 10 35 ppm/V VIN = 5 V to 18 V, −40°C < TA < +125°C 4
Load regulation ΔVOUT/ΔIL 70 ppm/mA IL = 0 mA to 10 mA, −40°C < TA < +125°C 4
Supply current IIN 390 500 µA No load 4
Supply current over temperature IIN 600 µA No load, −40°C < TA < +125°C 4
Supply voltage (absolute maximum) 18 V Rated relative to 25°C unless otherwise noted 7
Storage temperature range -65 150 °C 7
Operating temperature range -40 125 °C 7
Junction temperature range -65 150 °C 7
Pin temperature (soldering, 60 s) 300 °C Soldering, 60 seconds 7
Thermal resistance, junction-to-ambient (8-lead SOIC, R-8) θJA 130 °C/W Surface-mount package soldered to circuit board (worst case) 7
Supply voltage operating range (ADR421) VIN 4.5 18 V ADR421 input voltage range 1
Guaranteed load current IL 10 mA Input voltage range 4.5 V to 18 V 16

CAD (KiCad official)

  • Symbol: ADR421BRZ-REEL7
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: adr421brz-reel7-etched.step / adr421brz-reel7-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); adr421brz-reel7.step / adr421brz-reel7.glb are the bare package body.

Provenance

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

  • Datasheet: Analog Devices datasheet (24 pp, sha256 8803a0f5075e3774, retrieved 2026-10-17, 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: 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