component

COS8221ARZ

Public Made by Adom

by adom

COSINE Instrumentation Amplifiers, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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docs cos8221arz: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers cos8221arz: viewers · Ray
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cos8221arz-etched.glb cos8221arz: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
cos8221arz-etched.step cos8221arz: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
cos8221arz.glb Publish 0.1.0 · Ray
cos8221arz.kicad_mod Publish 0.1.0 · Ray
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cos8221arz.lbr Publish 0.1.0 · Ray
cos8221arz.step Publish 0.1.0 · Ray
package.json Publish 0.1.0 · Ray
page.json cos8221arz: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray
README.md cos8221arz: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

COS8221ARZ

COSINE · Instrumentation Amplifiers · SOP-8

COS8221ARZ from COSINE, in a SOP-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 VIN- input Negative (inverting) analog input to the instrumentation amplifier. Input terminals are diode-clamped to the supply rails; signals swinging more than 0.5V beyond the rails should be current-limited to <=10mA. Common-mode voltage range: -Vs+1.9V to +Vs-1.2V.
2 RG passive Gain-setting pin. Connect an external gain resistor RG between pins 2 and 3 to set gain per G = 1 + 49.4kΩ/RG. Leave open (NC) for unity gain.
3 RG passive Gain-setting pin. Connect an external gain resistor RG between pins 2 and 3 to set gain per G = 1 + 49.4kΩ/RG. Leave open (NC) for unity gain.
4 VIN+ input Positive (non-inverting) analog input to the instrumentation amplifier. Input terminals are diode-clamped to the supply rails; signals swinging more than 0.5V beyond the rails should be current-limited to <=10mA. Common-mode voltage range: -Vs+1.9V to +Vs-1.2V.
5 -VS power_in Negative supply rail. Operating range -2.25V to -18V (dual-supply operation) or ground for single-supply operation. Bypass to ground with a 0.1µF ceramic capacitor placed close to the pin.
6 REF input Output-stage reference input; sets the output DC level. Must be driven by a low-impedance source (or tied to ground) to preserve CMRR; ~8Ω of series resistance degrades CMR to ~80dB.
7 VOUT output Amplifier output. Output swing extends to +Vs-1.1V (high) and -Vs+0.9V (low); rated output current ±10mA (short-circuit current typ ±24mA).
8 +VS power_in Positive supply rail. Operating range +2.25V to +18V (dual-supply) or +4.5V to +36V (single-supply). Bypass with a 0.1µF ceramic capacitor placed close to the pin; a 2.2µF tantalum may be added for improved performance.

Key specifications

Parameter Value
Manufacturer COSINE
Package SOP-8
Category Amplifiers/Comparators
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • COS8221ARZ
  • COS8221BRZ
  • COS8221MR
  • COS8221DT

CAD (KiCad official)

  • Symbol: COS8221ARZ
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8 (KiCad packages3D, STEP)
  • 3D model files: cos8221arz-etched.step / cos8221arz-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cos8221arz.step / cos8221arz.glb are the bare package body.

Provenance

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

  • Datasheet: COSINE datasheet (8 pp, sha256 0e71b764a438c162, retrieved 2026-08-17, tier: lcsc)
  • 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