ADT70 Datasheet - Analog Devices

ADT70 PRTD Conditioning Circuit and Temperature Controller

PRTD Conditioning Circuit and Temperature Controller ADT70 * FUNCTIONAL BLOCK DIAGRAM NULLA NULLB BIAS 2.5VREFOUT ADT70 +VS OUTOA IOUTA IOUTB MATCHED CURRENT SOURCES 2.5V REF +INOA ؊INOA +INIA ؊INIA INST AMP SHUTDOWN SHUTDOWN RGA RGB GND SENSE OUTIA AGND ؊VS DGND The ADT70 provides .

ADT70 Features

* PRTD Temperature Measurement Range Typical IC Measurement Error ؎ 1؇C Includes Two Matched Current Sources Rail-to-Rail Output Instrumentation Amp Uncommitted, Rail-to-Rail Output Op Amp On-Board ؉ 2.5 V Reference Temperature Coefficient ؎ 25 ppm/؇C ؉ 5 V or ؎ 5 V Operation Supply Current 4 mA Max 1

ADT70_AnalogDevices.pdf