ای سی کلید لمسی (تاچ) سه ورودی با کالیبراسیون اتوماتیک Touch Key

 دریافت دیتا شیت

General Description

The BS81x is a series of 2~16 key touch key devices which can detect human body contact using external touch pads. The high level of device integration enable applications to be implemented with a minimum number of external components

The BS81x series devices are equipped with serial or parallel interfaces to allow easy communication with an external MCU for device setup and for touch pin monitoring purposes. Special internal circuitry is also employed to ensure excellent power noise rejection to reduce the possibility of false detections, increasing the touch switch application reliability under adverse environmental conditions

With auto-calibration, low standby current, excellent resistance to voltage fluctuation and other features, this range of touch key devices provide a simple and effective means of implementing touch key operation in a wide variety of applications

Features

Operating voltage: 2.2V~5.5V

Low standby current

Auto-calibration

Reliable touch detections

Standby and normal operating modes

Maximum key on duration time detection

Adaptive voltage drop function

Level Hold, selectable active level- low or high

NMOS output with internal pull-high/CMOSDirect Output

Both serial interface and parallel outputs

Sensitivity adjustment using an external capacitor

Minimal number of external components