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AI12
Public Made by Adomby adom
Sam wing Touch Sensors, SSOP-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownAI12
Sam wing · Touch Sensors · SSOP-24
AI12 from Sam wing, in a SSOP-24. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | KEY1 | input | Capacitive touch-key sensing input for key 1, which has the highest priority in the BCD output; unused keys are left floating. |
| 2 | KEY2 | input | Capacitive touch-key sensing input for key 2; unused keys are left floating. |
| 3 | KEY3 | input | Capacitive touch-key sensing input for key 3; unused keys are left floating. |
| 4 | KEY4 | input | Capacitive touch-key sensing input for key 4; unused keys are left floating. |
| 5 | KEY5 | input | Capacitive touch-key sensing input for key 5; unused keys are left floating. |
| 6 | KEY6 | input | Capacitive touch-key sensing input for key 6; unused keys are left floating. |
| 7 | KEY7 | input | Capacitive touch-key sensing input for key 7; unused keys are left floating. |
| 8 | KEY8 | input | Capacitive touch-key sensing input for key 8; unused keys are left floating. |
| 9 | KEY9 | input | Capacitive touch-key sensing input for key 9; unused keys are left floating. |
| 10 | KEY10 | input | Capacitive touch-key sensing input for key 10; unused keys are left floating. |
| 11 | KEY11 | input | Capacitive touch-key sensing input for key 11; unused keys are left floating. |
| 12 | KEY12 | input | Capacitive touch-key sensing input for key 12, which has the lowest priority; unused keys are left floating. |
| 13 | BCD3 | output | BCD output bit 3 of the detected key code; it is high (1) when no key is pressed. |
| 14 | BCD2 | output | BCD output bit 2 of the detected key code; it is high (1) when no key is pressed. |
| 15 | BCD1 | output | BCD output bit 1 of the detected key code; it is high (1) when no key is pressed. |
| 16 | BCD0 | output | BCD output bit 0 of the detected key code; it is high (1) when no key is pressed. |
| 17 | S1 | passive | Sensor connection S1, which is shorted directly to S2 on the package. |
| 18 | S2 | passive | Sensor connection S2, which is shorted directly to S1 on the package. |
| 19 | VDD | power_in | Positive supply pin; the datasheet specifies an operating voltage of 2.5 to 5.5 V and an absolute maximum of -0.3 to 6.0 V. |
| 20 | NC | unconnected | Internal test pin; leave it floating. |
| 21 | GND | power_in | Power ground pin. |
| 22 | C1 | passive | Reference capacitor connection; the datasheet recommends a 4.7 nF NPO or COG capacitor placed close to the IC. |
| 23 | CG | passive | Common control pin shared by the sensitivity capacitor and the reference capacitor. |
| 24 | CSEL | passive | Sensitivity setting capacitor connection; the maximum value is 100 pF, and it may be left floating (0 pF). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Sam wing |
| Package | SSOP-24 |
| Category | Sensors |
| Pins | 24 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating voltage (VDD) | VDD | 2.5 | 5.5 | V | 5 | ||
| Sensitivity capacitor range (CSEL) | CSEL | 0 | 0 | 100 | pF | 5 | |
| Sensing capacitance range (C_in) | C_in | 0.2 | 200 | pF | 5 | ||
| Absolute max VDD voltage | -0.3 | 6 | V | 4 | |||
| Absolute max input/output voltage | -0.3 | 6 | V | 4 | |||
| Operating temperature range | -40 | 85 | °C | 4 | |||
| Storage temperature range | -55 | 150 | °C | 4 | |||
| ESD, HUM | 8000 | V | 4 | ||||
| Operating current (I_vdd) | I_vdd | 0.8 | mA | VDD=3.0V | 5 | ||
| Operating current (I_vdd) | I_vdd | 1.6 | mA | VDD=5.0V | 5 | ||
| Power-on initialization time | T_init | 300 | ms | 5 |
CAD (KiCad official)
- Symbol:
AI12 - Footprint:
Package_SO:SSOP-24_5.3x8.2mm_P0.65mm - 3D model: SSOP-24 (KiCad packages3D, STEP)
- 3D model files:
ai12-etched.step/ai12-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ai12.step/ai12.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Sam wing datasheet (8 pp, sha256
54f2874266f9bcb1, retrieved 2026-10-19, 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: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).