Targeting mobile devices, Fujitsu Microelectronics' FMA1127 touch sensor controller converts capacitance generated by the human body and conductive touch pad to digital data with no analog processing. The water-resistant unit also performs in alarm systems, handheld health care products, home appliances, and applications where the controller can replace mechanical switches and buttons. The device exhibits operating voltage from 2.5 V to 5.5 V, operating temperature from 35°C to 85°C, current requirements of <0.15 mA, response time of 0.2 ms, and ESD protection of 8 kV (chip/contact pad) and 15 kV (system/air). The component includes an I²C interface, Automatic Impedance Calibration (AIC), and the Adjacent Pattern Interference Suppression (APIS) filtering function. The controller offers SSOP packaging with 2 to 6 DIOs and 6 to 12 sensor inputs, and QFN packaging with 3 to 12 DIOs and 6 to 12 sensor inputs. From $1.40 each in 10,000 quantities.
Fujitsu Microelectronics America