ZMD introduced their ZSSC3122 cLite low voltage capacitive sensor signal conditioner (SSC). The ZSSC3122 can be configured to interface with capacitive sensors from 2 to 10 pF with sensitivity as low as 125 atto-Farads (aF) per digital bit. The ZSSC3122 cLite features 4-bit resolution, 0.25% full-scale output accuracy, and built-in sleep mode. The device is ideal for low-power battery applications and industrial and rugged environments. ZMD ZSSC3122 samples are available now. Unit prices start at 3.30 EUR ($4.54 USD) in volumes of 1k devices.
Freescale Semiconductor introduced the MPR121 ultra-low-power capacitive sensor and a touch sensing software (TSS) suite compatible with more than 300 of its 8-bit microcontrollers (MCUs). The Freescale MPR121 capacitive touch sensor offers highly reliable touch detection through increased electrode count and integration of automatic calibration and area detection systems. The 12-pad touch sensor is available in the industry’s smallest lead-free package and offers the lowest power consumption at 29 µA average supply current, helping OEMs meet aggressive power targets.