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CAP1203-1-AC3-TR

Name: CAP1203-1-AC3-TR
Rating: 4.7 (12 reviews)

IC TOUCH SENSOR CAP 3CH 8TDFN

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Mfr。パート #CAP1203-1-AC3-TR
パッケージ 8-WFDFN Exposed Pad
データシート CAP1203-1-AC3-TR DataSheet
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仕様

Supplier	Microchip Technology
Package	Tape & Reel (TR),Cut Tape (CT)
Series	RightTouch™
ProductStatus	Active
Type	Buttons
ProximityDetection	No
NumberofInputs	3
Interface	I²C, SMBus
Voltage-Supply	3V ~ 5.5V
Current-Supply	500µA
OperatingTemperature	-40°C ~ 125°C
MountingType	Surface Mount
Package/Case	8-WFDFN Exposed Pad

概要

Description

CAP1203-1-AC3-TR is a 3-channel capacitive touch-sensor IC from the CAP120x family (Microchip). It monitors three touch pads and reports touch events to a microcontroller. Each channel can be configured with its own threshold and debounce, and the device supports auto-calibration to adapt to environment, noise, and aging. It operates with low power and is suitable for battery-powered apps. The sensing is capacitive: touching a pad changes the pad’s capacitance, which the chip detects and converts into a digital output or interrupt for the MCU. The -TR suffix indicates tape-and-reel packaging for automated assembly; -AC3 and -1 are variant/grade codes. Typical uses include implementing touch buttons on consumer electronics, appliances, remotes, and similar human–machine interfaces.

Features

CAP1203-1-AC3-TR features (concise):
- 3 independent capacitive touch channels (self-capacitance sensing)
- Auto-calibration with ambient noise compensation for stable operation
- Simple serial interface (I2C-like) with programmable registers
- Per-channel and/or global interrupt output for touch events
- Adjustable touch detection thresholds/sensitivity (multi-level)
- Noise filtering and debounce to improve reliability
- Low power operation with fast wake on touch
- Wide operating voltage (typical 2.0–5.5 V)
- Small package; Tape-and-Reel (TR) version for automated assembly
Note: Verify exact voltage range and interface details in the product datasheet for your exact lot.

Pinout

Pin count: 8 pins (8-pin package, tape-and-reel suffix -TR).
Function: The CAP1203-1 is a 3-channel capacitive touch sensor/controller IC. It monitors three touch electrodes, provides configurable sensitivity and auto-calibration, and reports key events via dedicated outputs and an interrupt. Typical pins include VDD, GND, three sensor inputs, three open-drain/key outputs (or multiplexed output pins depending on variant), and an interrupt/flag pin; the device is used to replace mechanical buttons with touch sensing.

Manufacturer

Manufacturer: Microchip Technology Inc.
Type of company: Microchip is an American publicly traded semiconductor company that designs and manufactures microcontrollers, analog and mixed‑signal integrated circuits, memory, and other ICs for embedded control, industrial, automotive, and consumer electronics markets.

Application

CAP1203-1-AC3-TR is a 3-key capacitive touch sensor controller. Typical applications include:
- Front-panel touch switches for consumer appliances (microwave, washer, dishwasher, coffee maker)
- UI controls for consumer electronics (TVs, audio equipment)
- Remote controls and handheld devices
- Lighting/HVAC and other home/industrial control panels
- Automotive interior/instrument-panel controls
Compact, low-power capacitive touch interface for button replacement.

Equivalent

CAP1203-1-AC3-TR is a 3-channel capacitive-touch controller. Functional equivalents/alternatives include:
- Other CAP1203 family variants (different packaging/trim)
- Microchip/Atmel AT42QT series (multi-key QT controllers)
- NXP MPR121 (I²C 12-key capacitive touch controller)
- TTP223 (single-key touch detector)
- Silicon Labs Si114x series (proximity/capacitive sensing)
Choose by channel count, interface, package and features to match your design.