Overview
The AD7150BRMZ is an ultra-low power, 2-channel capacitance converter designed for proximity sensing applications. Produced by Analog Devices Inc., this component delivers a complete signal processing solution for capacitive proximity sensors. It features an ultralow power converter with fast response time and utilizes Analog Devices' capacitance-to-digital converter (CDC) technology. This technology combines high input sensitivity and high tolerance of input parasitic ground capacitance and leakage current, making it ideal for real-world sensor applications. The integrated adaptive threshold algorithm compensates for variations in sensor capacitance due to environmental factors such as humidity, temperature, and changes in the dielectric material over time.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 2.7 to 3.6 | V |
| Current Consumption | 100 to 120 | μA |
| Current Consumption (Power-Down Mode) | 1 to 5 | μA |
| Response Time | 10 | ms |
| Operating Temperature Range | -40 to 85 | °C |
| Package Type | 10-lead MSOP | |
| Number of Channels | 2 | |
| Serial Interface | I2C compatible |
Key Features
- Ultra-low power consumption: 100μA to 120μA at nominal conditions and 1μA to 5μA in power-down mode.
- Fast response time of 10ms.
- Adaptive environmental compensation to adjust for variations in sensor capacitance due to humidity, temperature, and dielectric material changes.
- Two independent capacitance input channels.
- EMC tested for robustness against electromagnetic interference.
- Two modes of operation: standalone with fixed settings and interfaced to a microcontroller for user-defined settings.
- 2-wire serial interface (I2C compatible) for configuration and data access.
- Two proximity detection output flags.
- Integrated excitation source and CAPDAC for capacitive inputs.
- Complete clock generator, power-down timer, and power supply monitor.
Applications
- Proximity sensing.
- Contactless switching.
- Position detection.
- Level detection.
Q & A
- What is the primary function of the AD7150BRMZ?
The AD7150BRMZ is a 2-channel capacitance converter designed for proximity sensing applications, providing a complete signal processing solution for capacitive proximity sensors.
- What is the operating voltage range of the AD7150BRMZ?
The AD7150BRMZ operates with a supply voltage range of 2.7V to 3.6V.
- What is the response time of the AD7150BRMZ?
The response time of the AD7150BRMZ is 10ms.
- How does the AD7150BRMZ compensate for environmental variations?
The AD7150BRMZ uses an integrated adaptive threshold algorithm to compensate for variations in sensor capacitance due to environmental factors like humidity, temperature, and changes in the dielectric material.
- What types of interfaces does the AD7150BRMZ support?
The AD7150BRMZ supports a 2-wire serial interface (I2C compatible) for configuration and data access.
- What are the typical applications of the AD7150BRMZ?
Typical applications include proximity sensing, contactless switching, position detection, and level detection.
- What is the package type of the AD7150BRMZ?
The AD7150BRMZ is packaged in a 10-lead MSOP package.
- How many channels does the AD7150BRMZ have?
The AD7150BRMZ has two independent capacitance input channels.
- What is the operating temperature range of the AD7150BRMZ?
The AD7150BRMZ operates over a temperature range of -40°C to 85°C.
- Is the AD7150BRMZ EMC tested?
