The AD7150 is an ultra-low power, 2-channel capacitance converter designed for capacitive proximity sensors, featuring an ultra-low power converter with fast response time.
The AD7150 is an ultra‑low‑power, 2‑channel capacitance‑to‑digital converter designed for proximity sensing, contactless switching, position and level detection. It operates from 2.7 V to 3.6 V and offers fast 10 ms conversion time with adaptive environmental compensation.
The document includes functional block diagrams, pin descriptions, absolute maximum ratings, timing specifications, typical performance curves, and design considerations. It also outlines how the device can be used in standalone mode or interfaced to a microcontroller via an I²C‑compatible serial interface.
| Supply Voltage | 2.7 V to 3.6 V |
|---|---|
| Operating Temperature Range | ‑40 °C to +85 °C |
| Conversion Time | 10 ms (both channels, 5 ms per channel) |
| Gain Error | ‑20 % to +20 % |
The AD7150 operates from 2.7 V to 3.6 V.
Conversion takes 10 ms for both channels, or 5 ms per channel.
The device provides two proximity detection output flags (OUT1 and OUT2).
It is specified for temperatures from ‑40 °C to +85 °C.