New 14-Bit Capacitive Sensor Signal Conditioning IC Raises Bar for Sensors

Posted by Seta Davidian on Oct 6, 2011 12:19:00 PM

The following is a new product announcement:

capacitive sensor signal conditionerThe  new ZSSC3123 is a low power capacitive sensor signal conditioning IC that supports a broad range of sensor types and gives engineers a cost-effective component option for sensor designs.

With 14-bit resolution and 0.25% accuracy, the ZSSC3123 has first-pass calibration and low power consumption at 60uA with sleep mode lowering current consumption to <1uA. Target applications include low power battery driven sensor applications, sensors for humidity, weight scales, load and compression sensing, as well as tension control.

Capacitive sensors are often favored for their small size and lower power consumption. The ZSSC3123, complements these features and provides designers an optimal solution. The device is particularly suited for MEMS-based sensor elements, such as pressure sensors for hydraulic control systems, humidity sensors, and liquid level gauges. The ZSSC3123 connects to microcontrollers but can also be utilized in stand-alone designs for transducer and switch applications.

ZSSC3123 Capacitive Sensor Signal ConditioningThe ZSSC3123 can be configured to interface with capacitive sensors from 0.5 to 260 pF, with sensitivity as low as 125 atto-Farads per digital bit. The part can be used in both single and differential input sensor configurations. The device offers full 14-bit resolution for compensation of sensor offset, sensitivity and temperature.

Accuracy at the standard supply voltage of 2.3 to 5.5V is 0.25% over the -20C to +85C range and 0.5% from -40C to +125C. I2C and SPI interfaces as well as PDM or alarm outputs are provided.

Pricing will be available shortly.

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Topics: Sensor Signal Conditioning