Key facts
- Brand
- Analog Devices
- Model
- AD7143
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-06-07
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Analog Devices AD7143 Programmable Controller for Capacitance Touch Sensors Datasheet
The AD7143 is a programmable controller designed for use in systems requiring novel user input methods via capacitive sensors. It functions as an integrated capacitance-to-digital converter (CDC) featuring an 8-channel switch matrix connected to a high-resolution sigma-delta converter.
Key features include automatic conversion sequencing, on-chip calibration logic to compensate for environmental changes, and adaptive threshold levels. The device supports a C-compatible serial interface with a separate VDRIVE pin for voltage scaling between 1.65 V and 3.6 V.
Analog Devices AD7143 specifications
| Update Rate | 25 ms (maximum) |
|---|---|
| Resolution | 16 Bit |
| CIN Input Range | +/-2 pF |
| Supply Voltage (VCC) | 2.6 V to 3.6 V |
| Operating Temperature Range | -40°C to +150°C |
| Number of Sensor Inputs | 8 channels |
Source: Analog Devices AD7143 Programmable Controller for Capacitance Touch Sensors Datasheet
All Analog Devices AD7143 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the package type for the AD7143?
The device is available in a 16-lead, 4 mm x 4 mm LFCSP-VQ package.
From: Analog Devices AD7143 Programmable Controller for Capacitance Touch Sensors Datasheet
Does the AD7143 require external RC tuning components?
No, it does not require external RC tuning components.
From: Analog Devices AD7143 Programmable Controller for Capacitance Touch Sensors Datasheet
How many capacitance sensor input channels does the AD7143 have?
The AD7143 provides eight capacitance sensor input channels.
What is the voltage range for the I²C‑compatible serial interface?
The I²C‑compatible serial interface operates between 1.65 V and 3.6 V.