AD8494BRMZ-R7

+VS 7 COLD JUNCTION COMPENSATION THERMOCOUPLE +IN 8 –IN 1 IN-AMP 6 5 OUT SENSE 08529-001 AD849x 2 3 REF –VS –IN 1 REF 2 –VS 3 NC 4 AD849x – 8 +IN +VS OUT SENSE 08529-002 + 7 6 5 TOP VIEW (Not to Scale) NC = NO CONNECT  MEASUREMENT JUNCTION REFERENCE JUNCTION THERMOCOUPLE WIRE 08529-004 PCB TRACES AD849x INSULATED GROUNDED 08529-007 EXPOSED      +VS TEMPERATURE SENSOR COLD JUNCTION COMPENSATION +IN IN-AMP G = 123.65 –IN 5mV/°C SENSE OUT AD849x –VS 08529-005 REF SENSE –IN ESD AND OVERVOLTAGE PROTECTION 10kΩ A2 50kΩ COLD JUNCTION COMPENSATION 10kΩ +IN ESD AND OVERVOLTAGE PROTECTION A1 A3 DIFF AMP G=5 50kΩ OUT PRE-AM P AD8494/AD8496: G = 24.73 AD8495/AD8497: G = 19.34 REF 08529-003 MEASUREMENT JUNCTION REFERENCE JUNCTION KEEP JUNCTION AND AD849x AT SAME TEMPERATURE WHEN USING ISOLATED THERMOCOUPLE TIPS PCB TRACES THERMOCOUPLE WIRE KEEP TRACES SHORT AD849x 08529-010 RAILS HIGH WITH OPEN THERMOCOUPLE RAILS LOW WITH OPEN THERMOCOUPLE WHEN USING EXPOSED OR GROUNDED THERMOCOUPLE TIPS ELECTRICAL CONNECTION OCCURS AT TIP. VOLTAGE MUST STAY IN INPUT VOLTAGE RANGE OF AD849x. INCORRECT CORRECT WHEN THERMOCOUPLE TIP TYPE IS UNKNOWN AD849x REF AD849x V REF 10MΩ V + AD8613 08529-006 – 08529-008 R C R R C AD849x R AD849x FILTER FREQUENCY = 1 2πRC 08529-009 RAILS HIGH WITH OPEN THERMOCOUPLE RAILS LOW WITH OPEN THERMOCOUPLE 5V +VS 7 COLD JUNCTION COMPENSATION 5V +VS 7 THERMOCOUPLE +IN 8 –IN 1 IN-AMP 6 5 OUT COLD JUNCTION COMPENSATION +IN SENSE 08529-012 8 AD849x 2 3 –IN 1 IN-AMP 6 5 OUT SENSE REF –VS AD849x 2 3 REF –VS 08529-013 3.20 3.00 2.80 8 5 3.20 3.00 2.80 PIN 1 IDENTIFIER 1 5.15 4.90 4.65 4 0.65 BSC 0.95 0.85 0.75 15° MAX 1.10 MAX 0.70 0.55 0.40 0 9 1 7 0 9 -A 0.15 0.05 COPLANARITY 0.10 0.40 0.25 6° 0° 0.23 0.13 COMPLIANT TO JEDEC STANDARDS MO-187-AA