Key facts
- Brand
- Analog Devices
- Model
- AD7879
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-08-02
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Analog Devices AD7879W Low Voltage Touch Screen Controller Data Sheet
The AD7879W is a 12-bit successive approximation analog-to-digital converter (SAR ADC) designed to drive 4-wire resistive touch screens. It operates from a single power supply of 1.6 V to 3.6 V and features a throughput rate of up to 105 kSPS. The device includes preprocessing blocks with median and averaging filters to reduce noise from LCDs and other sources, as well as temperature and touch-pressure measurement capabilities.
The AD7879W supports both SPI and I2C-compatible interfaces (the latter for the AD7879-1W variant) and can function in slave or standalone master mode. It features a shutdown mode that reduces current consumption to less than 6 µA, making it suitable for battery-powered applications such as automotive systems, PDAs, and mobile phones.
Analog Devices AD7879 specifications
| Resolution | 12 Bits |
|---|---|
| Throughput Rate | 105 kSPS |
| Shutdown Mode Current | < 6 µA |
| Operating Temperature Range | -40°C to +85°C |
Source: Analog Devices AD7879W Low Voltage Touch Screen Controller Data Sheet
All Analog Devices AD7879 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the operating voltage range for the AD7879W?
The device works with a single power supply ranging from 1.6 V to 3.6 V.
From: Analog Devices AD7879W Low Voltage Touch Screen Controller Data Sheet
Does the AD7879W support I2C interface?
The standard AD7879W supports SPI, while the AD7879-1W variant offers an I2C-compatible interface.
From: Analog Devices AD7879W Low Voltage Touch Screen Controller Data Sheet
What is the supply voltage range for the AD7879/AD7889?
The device operates from 1.6 V up to 3.6 V.
From: Analog Devices AD7879/AD7889 Low Voltage Controller for Touch Screens Datasheet
Which serial interfaces are supported by the AD7879/AD7889?
Both SPI and I²C interfaces are supported, with separate pin configurations for each mode.
From: Analog Devices AD7879/AD7889 Low Voltage Controller for Touch Screens Datasheet