LR321

@@ -0,0 +1,41 @@+# LR321++**LRC** · Operational Amplifier · SOT-23-5++LR321 from LRC, 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 | +IN | input | Non-inverting input of the op-amp. Rail-to-rail input common-mode range from (-VS - 0.1V) to (+VS + 0.1V); absolute limit (-VS) - 0.5V to (+VS) + 0.5V. Input bias current ~10pA typical. |+| 2 | -VS | power_in | Negative supply rail. Connect to GND for single-supply operation (2.5V-5.5V), or to a negative rail for dual-supply operation (±1.25V to ±2.75V). Absolute max V+ to V- = 7.5V. |+| 3 | -IN | input | Inverting input of the op-amp. Rail-to-rail input common-mode range; input bias current ~10pA typical, input offset voltage ±0.8mV typical (±5mV max). |+| 4 | OUT | output | Rail-to-rail output. Output swing ~8mV from rails at RL=100kΩ, ~80mV at RL=10kΩ. Short-circuit / output current capability ~23mA typ (20mA min). Can directly drive up to 250pF capacitive load in unity gain. |+| 5 | +VS | power_in | Positive supply rail. Operating range 2.1V to 5.5V (single-supply 2.5V-5.5V, dual-supply ±1.25V to ±2.75V). Quiescent current 60µA typical. Bypass with 0.1µF ceramic close to the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | LRC |+| Package | SOT-23-5 |+| Category | Op-amp/Cmp |+| Pins | 5 |++## CAD (KiCad official)++- Symbol: `LR321`+- 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:** [LRC datasheet](docs/lr321-datasheet.pdf) (8 pp, sha256 `ffaa7779e8ef5c9e`, retrieved 2026-08-17, 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:** `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/lr321-datasheet.pdf)

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