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GS8721-TR
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Gainsil Operational Amplifier, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+46@@ -0,0 +1,46 @@+# GS8721-TR++**Gainsil** · Operational Amplifier · SOT-23-5++GS8721-TR from Gainsil, in a SOT-23-5. 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 | OUT | output | Amplifier output. Rail-to-rail output swing to within ~0.1V of supply rails with RL=600 ohm; typical output current 70mA (55mA min). Closed-loop output impedance ~7.5 ohm at 100kHz (G=1). |+| 2 | VSS | power_in | Negative supply / ground reference. Total supply (VDD-VSS) range 2.1V to 5.5V (abs max 7.5V). Input common-mode range extends to VSS-0.1V (rail-to-rail input). |+| 3 | IN+ | input | Non-inverting input. Rail-to-rail input; common-mode range (VSS-0.1V) to (VDD+0.1V). Very low input bias current (1pA typ) and input offset current (1pA typ). Absolute maximum input voltage: VSS-0.5V to VDD+0.5V. |+| 4 | IN- | input | Inverting input. Rail-to-rail input; same electrical limits as IN+. Input offset voltage 0.8mV typ / 3.5mV max at 25C; offset drift 2.4uV/C typ. |+| 5 | VDD | power_in | Positive supply. Single-supply operation from +2.1V to +5.5V (abs max 7.5V referenced to VSS). Quiescent current per amplifier 1.1mA typ (1.5mA max at 25C). PSRR 91dB typ. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Gainsil |+| Package | SOT-23-5 |+| Category | Op-amp/Cmp |+| Pins | 5 |++## Ordering variants++- `GS8721-TR`+- `GS8721-TRGS8721-CR`+- `GS8721-TRGS8721-SR`++## CAD (KiCad official)++- Symbol: `GS8721-TR`+- Footprint: `Package_TO_SOT_SMD:SOT-23-5`+- 3D model: SOT-23-5 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Gainsil datasheet](docs/gs8721-tr-datasheet.pdf) (18 pp, sha256 `7d4bae44a19b3397`, 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/gs8721-tr-datasheet.pdf)
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