COS721SR

@@ -0,0 +1,50 @@+# COS721SR++**COSINE** · Operational Amplifier · SOIC-8++COS721SR from COSINE, 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 | NC | unconnected | No connection. Leave floating or tie to ground; not electrically connected inside the package. |+| 2 | -IN | input | Inverting input of the amplifier. Allowable voltage range is -Vs - 0.3V to +Vs + 0.3V; input terminals are diode-clamped to the supply rails so external swings beyond 0.5V past the rails must be current-limited to 10mA. |+| 3 | +IN | input | Non-inverting input of the amplifier. Same voltage range as -IN (-Vs - 0.3V to +Vs + 0.3V). Rail-to-rail input capability with common-mode range extending from -0.1V to +Vs+0.1V. |+| 4 | -Vs | power_in | Negative power supply or ground. For single-supply operation tie to GND; for dual-supply operation connect to the negative rail (down to -2.75V). Bypass with a 0.1µF ceramic close to the pin if not directly grounded. |+| 5 | NC | unconnected | No connection. Leave floating or tie to ground; not electrically connected inside the package. |+| 6 | OUT | output | Amplifier output. Rail-to-rail output swings to within ~1mV of each rail with RL=100kΩ, ~8mV with RL=10kΩ, and ~40mV with RL=2kΩ. Short-circuit current is typically 21mA sourcing / 22mA sinking. |+| 7 | +Vs | power_in | Positive power supply, 2.5V to 5.5V single-supply (or up to +2.75V for dual-supply). Bypass with a 0.1µF ceramic capacitor placed as close as possible to the pin; a 2.2µF tantalum may be added for better performance. |+| 8 | NC | unconnected | No connection. Leave floating or tie to ground; not electrically connected inside the package. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | COSINE |+| Package | SOIC-8 |+| Category | Op-amp/Cmp |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `COS721SR`+- `COS721SRTR`++## CAD (KiCad official)++- Symbol: `COS721SR`+- 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:** [COSINE datasheet](docs/cos721sr-datasheet.pdf) (10 pp, sha256 `c3bf767fb360554e`, 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](docs/cos721sr-datasheet.pdf)

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