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ADVANCED COMMUNICATIONS & SENSING
V1.23 2009 Semtech Corp.
www.semtech.com
3
SX8724
ZoomingADC for Pressure and Temperature Sensing
Registers Settings ................................................................................................................................................. 33
Schematic.............................................................................................................................................................. 34
Input Impedance.................................................................................................................................................... 35
Switched Capacitor Principle ................................................................................................................................ 36
PGA Settling or Input Channel Modifications ........................................................................................................ 37
PGA Gain & Offset, Linearity and Noise ............................................................................................................... 37
Frequency Response ............................................................................................................................................ 38
Power Reduction ................................................................................................................................................... 39
Recommended Design for Other 2-WIRE Devices Connection ........................................................................... 39
Typical Performance ............................................................................................................................................40
Linearity ................................................................................................................................................................. 40
Integral Non-Linearity............................................................................................................................................ 40
Differential Non-Linearity....................................................................................................................................... 43
Noise ..................................................................................................................................................................... 44
Gain Error and Offset Error ................................................................................................................................... 46
Power Consumption .............................................................................................................................................. 47
PCB Layout Considerations................................................................................................................................49
How to Evaluate....................................................................................................................................................49
Package Outline Drawing: MLPQ-16 4x4 ...........................................................................................................50
Land Pattern Drawing: MLPQ-16 4x4 .................................................................................................................51
Tape and Reel Specification ...............................................................................................................................52