AT42QT2120-MMHR
ActiveQTOUCHADC, 12 BUTTON -WHEEL/SLIDER 20 VQFN 3X3X0.85MM T/R ROHS COMPLIANT: YES
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AT42QT2120-MMHR
ActiveQTOUCHADC, 12 BUTTON -WHEEL/SLIDER 20 VQFN 3X3X0.85MM T/R ROHS COMPLIANT: YES
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Technical Specifications
Parameters and characteristics for this part
| Specification | AT42QT2120-MMHR |
|---|---|
| Interface | I2C |
| LED Driver Channels [Max] | 10 |
| Mounting Type | Surface Mount |
| Number of Inputs | 12 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 20-VFQFN Exposed Pad |
| Proximity Detection | True |
| Supplier Device Package | 20-VQFN (3x3) |
| Type | Slider, Wheel, Buttons |
| Voltage - Supply [Max] | 5.5 V |
| Voltage - Supply [Min] | 1.8 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 1.84 | |
| 25 | $ 1.67 | |||
| 100 | $ 1.52 | |||
| Digi-Reel® | 1 | $ 1.84 | ||
| 25 | $ 1.67 | |||
| 100 | $ 1.52 | |||
| Tape & Reel (TR) | 6000 | $ 1.52 | ||
| Microchip Direct | T/R | 1 | $ 1.84 | |
| 25 | $ 1.67 | |||
| 100 | $ 1.52 | |||
| 1000 | $ 1.40 | |||
| 5000 | $ 1.33 | |||
| Newark | Each (Supplied on Full Reel) | 100 | $ 1.57 | |
Description
General part information
AT42QT2120 Series
The Microchip's AT42QT2120 is a capacitive touch controller with 12 configurable Microchip QTouchADC buttons, sliders and wheels. The QTouchADC sensing algorithm (self capacitance) enables the user to achieve longer-range proximity sensing. This capability makes the device ideal for any type of proximity-sensing application, including wake-up, thermostat, TV controls, wireless mouse, etc. This reduces the total power consumption of your device and results in a more intuitive and differentiated user interface.
The button sensors can be constructed in a variety of shapes and sizes. The device includes all the necessary signal processing functions required to provide stable sensing under a wide variety of changing conditions and frequencies (conducted immunity certified to EN61000-4-6 Level 2B).
The QTouchADC sensing algorithm enables superior sensing because of faster acquisition times and shorter burst lengths. This algorithm is utilized in the new Microchip AT42QT2120 touch controller, as well in the Microchip QTouch Library in the Microchip ATtiny20 and ATtiny40 devices. In addition to providing the industry's best proximity range, QTouchADC removes the need for any external components per sensing channel and reduces the pins to 1-pin-per-channel.
Documents
Technical documentation and resources
