Key facts
- Brand
- Analog Devices
- Model
- AD7747
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-09
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Analog Devices AD7747 24‑Bit Capacitance‑to‑Digital Converter Datasheet
The AD7747 is a high‑resolution Σ‑Δ capacitance‑to‑digital converter that supports single‑ended or differential grounded sensors. It provides a conversion range of ±8.192 pF, a typical resolution of 19.1 bits, and includes an on‑chip temperature sensor with 0.1 °C resolution. The device operates from a single 2.7 V to 5.25 V supply and is specified for automotive temperature ranges (‑40 °C to +125 °C).
The part features a 2‑wire I²C‑compatible serial interface, active AC shielding for sensor connections, and programmable CAPDACs for offset calibration. Detailed specifications, pin descriptions, timing diagrams, and typical performance graphs are provided throughout the document.
Analog Devices AD7747 specifications
| Capacitive Input Conversion Range | ±8.192 pF |
|---|---|
| Effective Resolution | 19.1 bits |
| Supply Voltage | 2.7 V to 5.25 V |
| Operating Temperature Range | ‑40 °C to +125 °C |
| Input Noise (Capacitive Channel) | 11.0 aF/√Hz RMS |
Source: Analog Devices AD7747 24‑Bit Capacitance‑to‑Digital Converter Datasheet
All Analog Devices AD7747 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the effective resolution of the AD7747?
The AD7747 provides an effective resolution of up to 19.1 bits.
From: Analog Devices AD7747 24‑Bit Capacitance‑to‑Digital Converter Datasheet
What supply voltage range does the AD7747 support?
It operates from a single supply of 2.7 V to 5.25 V.
From: Analog Devices AD7747 24‑Bit Capacitance‑to‑Digital Converter Datasheet
What supply voltage range does the AD7747 support?
The AD7747 can be powered from 2.7 V to 3.6 V or from 4.75 V to 5.25 V.
What is the effective resolution of the AD7747?
The device provides an effective resolution of about 19.1 bits.