EVAL-AD7156EBZ Ultra-Low Power, 1.8 V, 3 mm × 3 mm, Dual-Channel Capacitive Converter
The AD7156 uses a fast-responding, ultra-low-power converter to provide a comprehensive signal processing solution for capacitive sensors.
The AD7156 uses Analog Devices' Capacitive-to-Digital Converter (CDC) technology, which combines features that play an important role in interfacing with the actual sensor, such as high input sensitivity, high input parasitic ground capacitance, and leakage current tolerance.
An integrated adaptive threshold algorithm compensates for any changes in sensor capacitance due to environmental factors such as humidity and temperature, or aging insulation.
By default, the AD7156 operates in stand-alone mode with a fixed power-up setting and displays the detection results with two digital outputs. In addition, the AD7156 can be connected to a microcontroller via a serial interface, allowing the internal registers to be programmed with user-defined settings, and data and status information can be read from the part.
The AD7156 operates from a supply voltage of 1.8 V to 3.6 V and is rated for a temperature range of −40°C to +85°C.
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- 按钮和开关
- 近程传感
- 无触点开关
- 位置检测
- 液位检测
- 便携式产品
Features and Benefits:
- 超低功耗
电源电压: 1.8 V 至 3.6 V
工作电流： 70 μA （典型值）
关断电流：2 μA（典型值）
- 快速响应时间
转换时间：每通道10 ms
从串行接口唤醒时间：300 μs
- 自适应式环境补偿技术
- 2 个电容输入通道
传感器电容(CSENS): 0 pF至13 pF
灵敏度可达3 fF
- 2 种工作模式
固定设置的独立模式
用户自定义设置的微控制器接口模式
- 2 个检测输出标志
- 双线式串行接口(I2C兼容)
- 工作温度范围：−40°C至+85°C
- 10引脚LFCSP封装(3 mm × 3 mm × 0.8 mm)