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http://www.farnell.com/analog-devices/ The ADT7320 & ADT7420 are high accuracy digital temperature sensors offering breakthrough performance over a wide industrial range, housed in an LFCSP package. They contain a band gap temperature reference and a 13-bit analog-to-digital converter (ADC) to monitor and digitize the temperature to a 0.0625°C resolution. The ADC resolution, by default, is set to 13 bits (0.0625°C). This can be changed to 16 bits (0.0078°C) by setting Bit 7 in the configuration register (Register Address 0x01). The ADT7420 is guaranteed to operate over supply voltages from 2.7 V to 5.5 V. Operating at 3.3 V, the average supply current is typically 210 μA. The ADT7420 has a shutdown mode that powers down the device and offers a shutdown current of typically 2 μA. The ADT7420 is rated for operation over the −40°C to +150°C temperature range.

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