Datasheet ADT7302 (Analog Devices)

±2°C Accurate, Micropower Digital Temperature Sensor ADT7302 FEATURES FUNCTIONAL BLOCK DIAGRAM 13-bit temperature-to-digital converter −40°C to +125°C operating temperature range BAND GAP 13-BIT TEMPERATURE ANALOG/DIGITAL ±2°C accuracy SENSOR CONVERTER 0.03125°C temperature resolution GND VDD Shutdown current of 1 μA TEMPERATURE ADT7302 VALUE Power dissipation of 0.631 mW at VDD = 3.3 V REGISTER SPI- and DSP-compatible serial interface Shutdown mode CS SERIAL Space-saving SOT-23 and MSOP packages BUS SCLK INTERFACE DIN Compatible with AD7814 DOUT
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APPLICATIONS
Figure 1.
Medical equipment Automotive Environmental controls Oil temperature Hydraulic systems Cell phones Hard disk drives Personal computers Electronic test equipment Office equipment Domestic appliances Process control GENERAL DESCRIPTION PRODUCT HIGHLIGHTS
The ADT7302 is a complete temperature monitoring system 1. On-chip temperature sensor that allows an accurate available in SOT-23 and MSOP packages. It contains a band gap measurement of the ambient temperature. The measurable temperature sensor and a 13-bit ADC to monitor and digitize temperature range is −40°C to +125°C. the temperature reading to a resolution of 0.03125°C. 2. Supply voltage of 2.7 V to 5.25 V. The ADT7302 has a flexible serial interface that allows easy interfacing to most microcontrollers. The interface is compatible 3. Space-saving 6-lead SOT-23 and 8-lead MSOP packages. with SPI®, QSPI™, and MICROWIRE™ protocols as well as DSPs. 4. Maximum temperature accuracy of ±2°C. The part features a standby mode that is controlled via the serial interface. 5. 13-bit temperature reading to 0.03125°C resolution. The ADT7302’s wide supply voltage range, low supply current, 6. Shutdown mode that reduces the power consumption to and SPI-compatible interface make it ideal for a variety of 4.88 μW with VDD = 3.3 V at 1 SPS. applications, including PCs, office equipment, automotive, and domestic appliances. 7. Compatible with AD7814.
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