AT42QT1070-MMHR
ActiveTOUCH SENSOR CAPACITIVE 7 KEY 1.8V TO 5.5V SMD 20-PIN VQFN T/R
Deep-Dive with AI
Search across all available documentation for this part.
AT42QT1070-MMHR
ActiveTOUCH SENSOR CAPACITIVE 7 KEY 1.8V TO 5.5V SMD 20-PIN VQFN T/R
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | AT42QT1070-MMHR |
|---|---|
| Interface | I2C |
| LED Driver Channels [Max] | 5 |
| Mounting Type | Surface Mount |
| Number of Inputs | 7 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 20-VFQFN Exposed Pad |
| Proximity Detection | False |
| Supplier Device Package | 20-VQFN (3x3) |
| Type | 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 | $ 1.29 | |
| 1 | $ 1.29 | |||
| 25 | $ 1.20 | |||
| 25 | $ 1.20 | |||
| 100 | $ 1.08 | |||
| 100 | $ 1.08 | |||
| Digi-Reel® | 1 | $ 1.29 | ||
| 1 | $ 1.29 | |||
| 25 | $ 1.20 | |||
| 25 | $ 1.20 | |||
| 100 | $ 1.08 | |||
| 100 | $ 1.08 | |||
| Tape & Reel (TR) | 6000 | $ 1.08 | ||
| Microchip Direct | T/R | 1 | $ 1.29 | |
| 25 | $ 1.20 | |||
| 100 | $ 1.08 | |||
| 1000 | $ 1.01 | |||
| 5000 | $ 0.94 | |||
| Newark | Each (Supplied on Cut Tape) | 1 | $ 1.34 | |
| 10 | $ 1.30 | |||
| 25 | $ 1.25 | |||
| 50 | $ 1.19 | |||
Description
General part information
AT42QT1070 Series
The AT42QT1070 (QT1070) is a digital burst mode charge-transfer capacitive sensor driver. The device can sense from one to seven keys, dependent on mode.
The QT1070 has the optimized architecture where no external components are required and only 1-pin per channel. It includes all signal processing functions necessary to provide stable sensing under a wide variety of changing conditions, and the outputs are fully debounced.
The QT1070 modulates its bursts in a spread-spectrum fashion in order to heavily suppress the effects of external noise, and to suppress RF emissions. The QT1070 use a dual-pulse method of acquisition. This provides greater noise immunity and eliminates the need for external sampling capacitors, allowing touch sensing using a single pin.
Documents
Technical documentation and resources