Manufacturer: Analog Devices

Key Specifications

• Package: 24-lead LFCSP
• Channels: 14
• Interface: I2C/SPI
• Supply Voltage: 2.6V to 3.6V
• Operating Temperature: -40°C to +85°C
• Core: Programmable sequencer
• Memory: To be verified

The AD7142ACPZ-500RL7 from Analog Devices is a high-resolution, 14-channel capacitance-to-digital converter (CDC) designed for applications requiring precise capacitance measurement. It integrates a programmable sequencer and a digital signal processor to enable autonomous operation, reducing host processor load. The device supports both I2C and SPI serial interfaces, providing flexibility in system integration.

Key Features

• 14 input channels for capacitance sensing
• 16-bit resolution with no missing codes (to be verified)
• Programmable offset and gain calibration
• On-chip temperature sensor (to be verified)
• I2C and SPI interface options
• Wide supply voltage range: 2.6V to 3.6V
• Operating temperature range: -40°C to +85°C
• 24-lead LFCSP package

Applications

• Proximity sensing
• Touch buttons and sliders
• Level sensing in liquid tanks
• Position and displacement measurement
• Consumer electronics and industrial controls

Selection Guidance

The AD7142ACPZ-500RL7 is suitable for multi-channel capacitance sensing applications where low power and high accuracy are required. Its programmable nature allows customization for specific sensing ranges and environmental conditions. For detailed specifications and design resources, refer to the official datasheet.