ZSSC3123数据手册集成电路（IC）的传感器检测器接口规格书PDF

描述 Description

The ZSSC3123 cLite™ is a CMOS integrated circuit for accurate capacitance-to-digital conversion and sensor-specific correction of capacitive sensor signals. Digital compensation of sensor offset, sensitivity and temperature drift is accomplished via an internal digital signal processor running a correction algorithm with calibration coefficients stored in a nonvolatile EEPROM. The ZSSC3123 is configurable for capacitive sensors with capacitances up to 260pF and a sensitivity of 125aF/LSB to 1pF/LSB depending on resolution, speed, and range settings. It is compatible with both single capacitive sensors (both terminals must be accessible) and differential capacitive sensors. Measured and corrected sensor values can be output as I2C, SPI, PDM, or alarms. The I2C interface can be used for a simple PC-controlled calibration procedure to program a set of calibration coefficients into an on-chip EEPROM. The calibrated ZSSC3123 and a specific sensor are mated digitally: fast, precise, and without the cost overhead of trimming by external devices or laser.

特性 Features

Maximum target input capacitance: 260pF
Sampling rates as fast as 0.7ms @ 8-bit, 1.6ms @ 10-bit, 5.0ms @ 12-bit, 18.5ms @ 14-bit
Digital compensation of sensor: piece-wise 1st and 2nd order sensor compensation or up to 3rd order single-region sensor compensation
Digital compensation of 1st and 2nd order temperature gain and offset drift
Internal temperature compensation reference (no external components)
Programmable capacitance span and offset
Layout customized for die-die bonding with sensor for low-cost, high-density chip-on-board assembly
Accuracy as high as ±0.25% full-scale output @ -40°C to 125°C, 3V, 5V, Vsupply ±10% (see data sheet section 1.3 for restrictions)

应用 Application

• 支持 IO-Link 的传感器系统