Table of Contents
1.0 General Description .........................................................................................................................
1 2.0 Features ........................................................................................................................................
1 3.0 Key Specifications ...........................................................................................................................
1 4.0 Applications ....................................................................................................................................
1 5.0 Typical Application ...........................................................................................................................
1 6.0 Block Diagram ................................................................................................................................
2 7.0 Ordering Information ........................................................................................................................
5 8.0 Connection Diagram ........................................................................................................................
5 9.0 Pin Descriptions ..............................................................................................................................
6 11.0 Operating Ratings ..........................................................................................................................
7 13.0 Timing Diagrams .........................................................................................................................
12 14.0 Specific Definitions ......................................................................................................................
15 16.0 Functional Description ..................................................................................................................
21 16.1 SIGNAL PATH .....................................................................................................................
21 16.1.4 Buffer (BUFF) ............................................................................................................
22 16.1.7 Digital Filter ...............................................................................................................
24 16.1.8 GPIO (D0–D6) ...........................................................................................................
27 16.2 CALIBRATION .....................................................................................................................
27 16.3 CHANNELS SCAN MODE .....................................................................................................
29 16.4 SENSOR INTERFACE ..........................................................................................................
30 16.4.2 Burnout Currents ........................................................................................................
30 16.5.3 Streaming ..................................................................................................................
32 16.5.5 SPI Reset ..................................................................................................................
33 16.6 POWER MANAGEMENT ......................................................................................................
38 16.7 RESET and RESTART ..........................................................................................................
38 17.1 QUICK START .....................................................................................................................
39 17.2.1 VA and VIO ...............................................................................................................
39 17.2.2 VREF ........................................................................................................................
39 17.5 STREAMING EXAMPLES .....................................................................................................
42 17.6.1 3–Wire RTD ...............................................................................................................
45 18.0 Registers ....................................................................................................................................
48 18.1 REGISTER MAP ..................................................................................................................
48 18.3 ADC REGISTERS ................................................................................................................
51 3
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LMP90080/LMP90079/LMP90078/LMP90077