AI02C sop8

@@ -0,0 +1,44 @@+# AI02C sop8++**Sam wing AI02C sop8** · Touch Sensors · SOP-8++AI02C sop8 from Sam wing AI02C sop8, 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 | GND | power_in | Power ground (0 V) reference for the device. |+| 2 | C1 | passive | Internal reference capacitor pin. Connect a 4.7 nF (range 1 nF-10 nF) NPO-grade capacitor to GND, placed close to the IC. Sets the internal balance/reference capacitance for the sensing engine. |+| 3 | KEY1 | input | Capacitive touch sense input for channel 1. Connects through a 2 kΩ series resistor to the touch pad/electrode; an optional CX sensitivity capacitor (0-10 pF, typ. 0 pF/open) tunes sensitivity. |+| 4 | KEY2 | input | Capacitive touch sense input for channel 2. Connects through a 2 kΩ series resistor to the touch pad/electrode; optional CX sensitivity capacitor (0-10 pF) tunes sensitivity. |+| 5 | OUT2 | output | Channel 2 touch output. Polarity and behavior depend on the MD pin: MD floating → open-drain active-low (needs external pull-up); MD=VDD → push-pull direct active-high; MD=GND → toggle/latched output (initial low). |+| 6 | OUT1 | output | Channel 1 touch output. Polarity and behavior depend on the MD pin: MD floating → open-drain active-low (needs external pull-up); MD=VDD → push-pull direct active-high; MD=GND → toggle/latched output (initial low). |+| 7 | MD | input | Output mode select. Float = open-drain active-low output (external pull-up required). Tied to VDD = direct/push-pull active-high (momentary). Tied to GND = toggle (self-latching) mode, initial state low. |+| 8 | VDD | power_in | Positive supply, 2.5-5.5 V (absolute max 6.0 V). A 20 Ω series resistor between the board VDD and this pin plus a 100 nF decoupling capacitor to GND is recommended. Typical operating current 394 µA @ 3 V, 666 µA @ 5 V; sleep current 7 µA @ 3 V, 11 µA @ 5 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Sam wing AI02C sop8 |+| Package | SOP-8 |+| Category | Sensor |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `AI02C sop8`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Sam wing AI02C sop8 datasheet](docs/ai02c-sop8-datasheet.pdf) (8 pp, sha256 `dfb17da9fde947e4`, 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/ai02c-sop8-datasheet.pdf)

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