描述 Description

The ZSSC3230 ?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 non-volatile, multiple-time programmable (MTP) memory. Programming the ZSSC3230 is simple via the serial interface. The interface is used for the PC-controlled calibration procedure, which programs the set of calibration coefficients in memory. The ZSSC3230 is configurable for capacitive sensors with capacitances up to 30pF and will provide a scalable up to 18 bit output resolution. It is compatible with single ended capacitive sensors. Measured and corrected sensor values can be output as I2C? (≤ 3.4MHz).

The ZSSC3230 provides accelerated signal processing, increased resolution, and improved noise immunity in order to support high-speed control, safety, and real-time sensing applications with highest requirements for energy efficiency.

特性 Features

Supply Voltage 1.68–3.6V?
Low current consumption with 1.3μA at 1 sample per second
Maximum target input capacitance: 30pF
Programmable capacitance span and offset
High sampling rate with 430Hz at 14-bit resolution
ADC resolution: adjustable in speed and resolution, 18-bit in maximum
Internal auto-compensated temperature sensor, not stress sensitive
Programmable measurement sequence, single shot and automatic cycling of measurements with end-of-sequence interrupt output
Oversampling modes by internal averaging
Interrupt features
Build in NVM for configuration and free space for arbitrary user data
Small die size
External reset pin (low active)
No external trimming components required
Highly integrated CMOS design
Package: Die and 24-VFQFPN

應(yīng)用 Application

? 醫(yī)療貼片
? 工業(yè)用嵌入式可編程邏輯控制器 (PLC)