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AD7814ARTZ-REEL2 Datasheet(PDF) 1 Page - Analog Devices |
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AD7814ARTZ-REEL2 Datasheet(HTML) 1 Page - Analog Devices |
1 / 8 page REV. E a AD7814 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 © 2004 Analog Devices, Inc. All rights reserved. 10-Bit Digital Temperature Sensor in 6-Lead SOT-23 FUNCTIONAL BLOCK DIAGRAM SERIAL BUS INTERFACE AD7814 VDD CS SCLK DIN DOUT GND TEMPERATURE VALUE REGISTER 10-BIT ANALOG/DIGITAL CONVERTER BAND GAP TEMPERATURE SENSOR FEATURES 10-Bit Temperature-to-Digital Converter –55 C to +125 C Operating Temperature Range 2 C Accuracy SPI- and DSP-Compatible Serial Interface Shutdown Mode Space-Saving SOT-23 Package APPLICATIONS Hard Disk Drives Personal Computers Electronic Test Equipment Office Equipment Domestic Appliances Process Control GENERAL DESCRIPTION The AD7814 is a complete temperature monitoring system in a SOT-23 package or 8-lead MSOP package. It contains a band gap temperature sensor and 10-bit ADC to monitor and digitize the temperature reading to a resolution of 0.25 °C. The AD7814 has a flexible serial interface that allows easy inter- facing to most microcontrollers. The interface is compatible with SPI ®, QSPI™, and MICROWIRE™ protocol, and is also compatible with DSPs. The part features a standby mode that is controlled via the serial interface. The AD7814’s wide supply voltage range, low supply current, and SPI-compatible interface make it ideal for a variety of applications, including personal computers, office equipment, and domestic appliances. Purchase of licensed I 2C components of Analog Devices or one of its sublicensed Associated Companies conveys a license for the purchaser under the Philips I 2C Patent Rights to use these components in an I 2C system, provided that the system conforms to the I 2C Standard Specification as defined by Philips. PRODUCT HIGHLIGHTS 1. The AD7814 has an on-chip temperature sensor that allows an accurate measurement of the ambient temperature. The measurable temperature range is –55 °C to +125°C, with a ±2°C temperature accuracy. 2. Supply voltage of 2.7 V to 5.5 V 3. Space-saving 6-lead SOT-23 package and 8-lead MSOP package 4. 10-bit temperature reading to 0.25 °C resolution 5. Standby mode that reduces the current consumption to 1 µA |
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