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AI04

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by Ray

Sam wing Touch Sensors, SOP-14. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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AI04

Sam wing · Touch Sensors · SOP-14

AI04 from Sam wing, in a SOP-14. 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 (电源地). Reference 0V for the device.
2 C1 passive Internal reference/balance capacitor connection (内部基准电容). Connect a 4.7nF capacitor to GND (range 1nF-10nF). Use NPO 10% dielectric placed close to the IC.
3 CSEL passive Sensitivity-adjust capacitor connection (灵敏度调节电容接口). Connect 0-100pF to GND; smaller value increases sensitivity, larger value increases noise immunity. Typically left floating (0pF) but a placeholder pad is recommended.
4 KEY1 input Capacitive touch sensing input for channel 1 (触摸按键/感应天线). Connect through a 1kΩ series resistor to the touch pad. Sensed capacitance range 0.2-200pF.
5 KEY2 input Capacitive touch sensing input for channel 2. Connect through a 1kΩ series resistor to the touch pad.
6 KEY3 input Capacitive touch sensing input for channel 3. Connect through a 1kΩ series resistor to the touch pad.
7 KEY4 input Capacitive touch sensing input for channel 4. Connect through a 1kΩ series resistor to the touch pad.
8 OUT4 output Channel 4 key output (通道4输出口). Output polarity/mode set by MD pin: direct active-high (MD=VDD), toggle/latched (MD=GND), or active-low open-drain requiring external pull-up (MD=floating). Sink current 30-40mA at VDD=5V.
9 OUT3 output Channel 3 key output. Behavior determined by MD pin (direct / toggle / open-drain).
10 OUT2 output Channel 2 key output. Behavior determined by MD pin (direct / toggle / open-drain).
11 OUT1 output Channel 1 key output. Behavior determined by MD pin (direct / toggle / open-drain).
12 SLEEP input Sleep mode select (睡眠模式选择). Tie to VDD to enable auto-sleep after ~80s of inactivity (reduced current, wakes on touch). Tie to GND to keep chip always active.
13 MD input Output mode select (输出模式选择). MD=VDD → direct active-high push-pull output. MD=GND → toggle/self-lock output, initial low. MD=floating → active-low open-drain output requiring external pull-up.
14 VDD power_in Positive supply (正电源). Operating range 2.5-5.5V; absolute max 6.0V. Typical operating current 0.8mA at 3V / 1.6mA at 5V; sleep current 45µA at 3V / 90µA at 5V. Decouple with 100nF near the pin; a ~20Ω series resistor from the rail is recommended in the typical application.

Key specifications

Parameter Value
Manufacturer Sam wing
Package SOP-14
Category Sensor
Pins 14

CAD (KiCad official)

  • Symbol: AI04
  • Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
  • 3D model: SOP-14 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Sam wing datasheet (9 pp, sha256 0a6e891daf512f33, 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