特性
- Supply voltage: 1.68V to 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
描述
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 to support high-speed control, safety, and real-time sensing applications with the highest requirements for energy efficiency.
产品参数
| 属性 | 值 |
|---|---|
| Function | Capacitive SSC |
| Automotive Qual. | No |
| Supply Voltage (V) | 1.68 - 3.6 |
| Input Type | Single-capacitor |
| Interface | I2C, PDM, Alarm |
| Adj. Analog Gain | 30 |
| Resolution (bits) | 18 |
| Sample Rate Max (KHz) | 0.55 |
| Temp. Range (°C) | -40 to +85°C, -40 to +125°C, 0 to +70°C |
应用方框图
 | 工业可编程逻辑控制器（PLC） 灵活的嵌入式可编程逻辑控制器（PLC），旨在集成任何类型的接口以满足终端应用需求。 |