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Capacitive Sensor Switch Control IC

ROHM capacitive sensor switch control ICs detect capacitive changes as a voltage and outputs a digital signal. A variety of algorithms are included, enabling support for touch switch, gesture, and slider operation. 

RoHM'SCapacitive Sensor Control ICs

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Specifications Part No. Package Features
8-sensor Gesture Type
BU21010MUV

VQFN016V3030
16-sensor Slider Type
BU21009MUV

VQFN032V5050
16-sensor Gesture Type
BU21008MUV

VQFN032V5050


Block Diagram
Expanded
  

Features

Proprietary CV conversion technology minimizes the effects of electrode resistance on the sensor circuit

The capacitance change between an object (i.e. finger) and the sensor is converted to voltage, then output digitally via an internal ADC.

  
Expanded
Built-in chatter prevention, hysteresis setting, and noise cancellation functions
2 types of host I/F: I2C (BU21008/09/10)
PWM dimming control (BU21008)
Supports gesture operation (BU21008/10)

Product Inquiries



Capacitive Sensor Control ICs

Part No. Supply voltage Sensor Input ch LED control ch Interface Package RoHS Distribution
Inventory
Analog
(V)		 Digital
(V)
Reset
BU21009MUV 2.5 to 3.3 1.7 to 3.3 Max. 16ch Max. 8ch I2C BUS VQFN032V5050 Yes
BU21008MUV 2.5 to 3.3 1.7 to 3.3 Max. 16ch Max. 8ch I2C BUS VQFN032V5050 Yes
BU21010MUV 2.5 to 3.3 1.7 to 3.3 Max. 8ch Max. 4ch I2C BUS VQFN016V3030 Yes

 

Capacitive Sensor
Control ICs

2011.06.07

ROHM Introduces Industry's First Multi-Touch Controller for Resistive Touchscreens

2010.09.13

ROHM Develops a Capacitive Sensing Multi-Touch Controller IC, “BU21018MWV”