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The AT42QT1245-MU is a digital burst mode charge-transfer (QT™) sensor, designed specifically for matrix layout touch controls. It includes all signal processing functions necessary to provide stable sensing under a wide variety of changing conditions. Only a few external parts are required for operation.
8 mm or wider, centre to centre (panel thickness dependent)
Two-part electrode shapes (drive-receive); wide variety of possible layouts
One layer (with jumpers), two layers (no jumpers)
PCB, FPCB, silver or carbon on film, ITO on film
Plastic, glass, composites, painted surfaces (low particle density metallic paints possible)
Individually settable via simple commands over the communication interface
Industrial
| Factory Lead Time | 4 Weeks |
| Surface Mount | YES |
| Package / Case | 32-VFQFN Exposed Pad |
| Mounting Type | Surface Mount |
| Mount | Surface Mount |
| Supplier Device Package | 32-QFN (5x5) |
| Number of Terminals | 32 |
| Supplier Package | QFN |
| Category | 24-key Qmatrix Touch Sensor |
| Mounting | Surface Mount |
| Interface Type | SPI |
| Manufacturer | Microchip |
| Brand | Microchip Technology |
| RoHS | Details |
| Package Shape | SQUARE |
| Product Status | Active |
| Mfr | Microchip Technology |
| Base Product Number | AT42QT1245 |
| Package | Tray |
| Published | 2009 |
| Series | QMatrix™ |
| Packaging | Tray |
| Operating Temperature | -40°C~105°C |
| JESD-609 Code | e3 |
| Pbfree Code | yes |
| Part Status | Active |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| Number of Terminations | 32 |
| Type | Buttons |
| Terminal Finish | Matte Tin (Sn) |
| Subcategory | Sensors |
| Voltage - Supply | 3V~5V |
| Terminal Position | QUAD |
| Terminal Form | NO LEAD |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Number of Functions | 1 |
| Terminal Pitch | 0.5mm |
| Reach Compliance Code | compliant |
| Base Part Number | AT42QT1245 |
| Pin Count | 32 |
| JESD-30 Code | S-XQCC-N32 |
| Supply Voltage-Max (Vsup) | 5V |
| Temperature Grade | INDUSTRIAL |
| Supply Voltage-Min (Vsup) | 3V |
| Number of Channels | 24 Channel |
| Interface | SPI |
| Analog IC - Other Type | ANALOG CIRCUIT |
| Operating Supply Current | 6.6mA |
| Current - Supply | 6.6mA |
| Number of Inputs | Up to 24 |
| Seated Height-Max | 1 mm |
| Resolution | 10 b |
| Product Type | Touch Sensors |
| Sensor Type | Button |
| Proximity Detection | No |
| LED Driver Channels | -- |
| Product Category | Capacitive Touch Sensors |
| Width | 5mm |
| Height Seated (Max) | 1mm |
| Length | 5mm |
| RoHS Status | ROHS3 Compliant |
AT42QT1245-MU Datasheet
+8613715157867