XE8805 SEMTECH [Semtech Corporation], XE8805 Datasheet - Page 87

• Manufacturer Part Number: XE8805
• Description: Data Acquisition MCU
• Manufacturer: SEMTECH [Semtech Corporation]

16.
16.1
16.2
16.3
16.4
16.4.1
16.4.2
16.4.3
16.5
16.6
16.6.1
16.6.2
16.6.3
16.6.4
16.7
16.7.1
16.7.2
16.7.3
16.7.4
16.7.5
16.7.6
16.7.7
16.7.8
16.8
16.8.1
16.8.2
16.8.3
16.8.3.1
16.8.3.2
16.8.4
16.8.5
16.8.6
16.8.7
16.9
16.9.1
16.9.2
16.9.3
16.9.4
16.9.5
© Semtech 2006
Acquisition
ZoomingADC™ Features ....................................................................................................... 16-2
Overview ................................................................................................................................. 16-2
Register map .......................................................................................................................... 16-2
ZoomingADC™ Description................................................................................................... 16-4
Acquisition Chain ..................................................................................................................... 16-4
Peripheral Registers................................................................................................................. 16-6
Continuous-Time vs. On-Request ............................................................................................ 16-8
Input Multiplexers .................................................................................................................. 16-9
Programmable Gain Amplifiers........................................................................................... 16-10
PGA & ADC Enabling............................................................................................................. 16-12
PGA1 ..................................................................................................................................... 16-12
PGA2 ..................................................................................................................................... 16-12
PGA3 ..................................................................................................................................... 16-12
ADC Characteristics ............................................................................................................ 16-13
Conversion Sequence............................................................................................................ 16-13
Sampling Frequency .............................................................................................................. 16-14
Over-Sampling Ratio.............................................................................................................. 16-14
Elementary Conversions ........................................................................................................ 16-14
Resolution .............................................................................................................................. 16-15
Conversion Time & Throughput ............................................................................................. 16-16
Output Code Format .............................................................................................................. 16-16
Power Saving Modes ............................................................................................................. 16-18
Specifications and Measured Curves................................................................................. 16-18
Default Settings...................................................................................................................... 16-19
Specifications......................................................................................................................... 16-20
Linearity ................................................................................................................................. 16-21
Integral non-linearity............................................................................................................... 16-21
Differential non-linearity ......................................................................................................... 16-25
Noise...................................................................................................................................... 16-26
Gain Error and Offset Error .................................................................................................... 16-27
Power Consumption............................................................................................................... 16-28
Power Supply Rejection Ratio................................................................................................ 16-30
Application Hints.................................................................................................................. 16-31
Input Impedance .................................................................................................................... 16-31
PGA Settling or Input Channel Modifications.......................................................................... 16-31
PGA Gain & Offset, Linearity and Noise................................................................................. 16-31
Frequency Response ............................................................................................................. 16-32
Power Reduction.................................................................................................................... 16-33
Chain
16-1
XE8805/05A
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