AD7151
PRODUCTIONUltra-Low Power, 1-Channel, Capacitance Converter for Proximity Sensing
- Part Models
- 2
- 1ku List Price
- Starting From $1.66
Overview
- Ultra-low power
2.7 V to 3.6 V, 70 µA - Response time: 10 ms
- Adaptive environmental compensation
- 1 capacitance input channel
Sensor capacitance (CSENS) 0 up to 13 pF
Sensitivity to 1 fF - EMC tested
- 2 modes of operation
Standalone with fixed settings
Interfaced to a microcontroller for user-defined settings
- Proximity detection output flag
- 2-wire serial interface (I2C-compatible)
- Operating temperature
−40°C to +85°C - 10-lead MSOP package
The AD7151 delivers a complete signal processing solution for capacitive proximity sensors, featuring an ultra-low power converter with fast response time. The AD7150 is a two-channel alternative to the AD7151.
The AD7151 uses Analog Devices, Inc., capacitance-to-digital converter (CDC) technology, which combines features important for interfacing to real sensors, such as high input sensitivity and high tolerance of both input parasitic ground capacitance and leakage current.
The integrated adaptive threshold algorithm compensates for any variations in the sensor capacitance due to environmental factors like humidity and temperature or due to changes in the dielectric material over time.
By default, the AD7151 operates in standalone mode using the fixed power-up settings and indicates detection on a digital output. Alternatively, the AD7151 can be interfaced to a microcontroller via the serial interface, the internal registers can be programmed with user-defined settings, and the data and status can be read from the part.
The AD7151 operates with a 2.7 V to 3.6 V power supply. It is specified over the temperature range −40°C to +85°C.
APPLICATIONS
- Proximity sensing
- Contactless switching
- Position detection
- Level detection
Documentation
Data Sheet 1
Application Note 1
Technical Articles 1
Frequently Asked Question 1
Device Drivers 1
Webcast 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD7151BRMZ | 10-Lead MSOP | ||
| AD7151BRMZ-REEL | 10-Lead MSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
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Jul 1, 2025 - 25_0162 Gold to Copper Wire Conversion |
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| AD7151BRMZ | PRODUCTION | |
| AD7151BRMZ-REEL | PRODUCTION | |
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Jan 26, 2016 - 15_0176 Assembly Transfer of Select 8/10L MSOP Products to Amkor Philippines |
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| AD7151BRMZ | PRODUCTION | |
| AD7151BRMZ-REEL | PRODUCTION | |
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May 15, 2012 - 10_0006 Halogen Free Material Change for mini SOIC Products |
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| AD7151BRMZ | PRODUCTION | |
| AD7151BRMZ-REEL | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Evaluation Software 0
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