Datasheet

AD8494/AD8495/AD8496/AD8497
Rev. C | Page 2 of 16
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description......................................................................... 1
Product Highlights ........................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 5
Thermal Resistance ...................................................................... 5
ESD Caution.................................................................................. 5
Pin Configuration and Function Descriptions............................. 6
Typical Performance Characteristics ............................................. 7
Theory of Operation ...................................................................... 11
Thermocouples........................................................................... 11
Thermocouple Signal Conditioner.......................................... 11
AD8494/AD8495/AD8496/AD8497 Architecture .................. 11
Maximum Error Calculation.................................................... 12
Recommendations for Best Circuit Performance.................. 13
Applications Information.............................................................. 14
Basic Connection ....................................................................... 14
Ambient Temperature Sensor................................................... 14
Setpoint Controller .................................................................... 15
Measuring Negative Temperatures .......................................... 15
Reference Pin Allows Offset Adjustment................................ 15
Outline Dimensions ....................................................................... 16
Ordering Guide .......................................................................... 16
REVISION HISTORY
6/11—Rev. B to Rev. C
Changes to Figure 35 and Figure 36............................................. 15
4/11—Rev. A to Rev. B
Changes to Figure 1.......................................................................... 1
Changes to Figure 33 and Figure 34............................................. 14
Changes to Figure 35 and Figure 36............................................. 15
Changes to Ordering Guide .......................................................... 16
10/10—Rev. 0 to Rev. A
Changes to Linearity Error of the Thermocouple Section........ 12
Changes to Ambient Temperature Sensor Section .................... 14
Changes to Ordering Guide .......................................................... 16
7/10—Revision 0: Initial Version