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resources:eval:user-guides:arduino-uno:reference_designs:demo_cn0395 [06 Jan 2021 09:58] – Fixed bad link for en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/EVAL-CN0395-ARDZ.html Ioana Chelaruresources:eval:user-guides:arduino-uno:reference_designs:demo_cn0395 [07 Jan 2021 09:41] (current) – Fixed bad link for EVAL-CN0395-ARDZ Shield Ioana Chelaru
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-The TGS8100 sensor requires two voltage inputs: heater voltage (VH) and circuit voltage (VC). The heater voltage (VH) is applied to the integrated heater in order to maintain the sensing element at a specific temperature which is optimal for sensing. The [[adi>en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/EVAL-CN0395-ARDZ.html|EVAL-CN0395-ARDZ shield]] circuit provides the heater voltage (VH), by using [[adi>ADN8810 ]] IDAC as a programmable current source. The default full scale current in the IDAC is 9.94mA and the default value of the RSN resistors is 41.2Ω. +The TGS8100 sensor requires two voltage inputs: heater voltage (VH) and circuit voltage (VC). The heater voltage (VH) is applied to the integrated heater in order to maintain the sensing element at a specific temperature which is optimal for sensing. The [[resources:eval:user-guides:eval-adicup360:hardware:cn0395|EVAL-CN0395-ARDZ Shield]] circuit provides the heater voltage (VH), by using [[adi>ADN8810 ]] IDAC as a programmable current source. The default full scale current in the IDAC is 9.94mA and the default value of the RSN resistors is 41.2Ω. 
  
 The hardware also allows for two main modes of operation: <fc #008000>heater mode and sensor resistance measurement mode</fc>. In heater mode, the [[adi>AD7988-1]] ADC receives as input the heater voltage (VH) while in sensor mode the input is the voltage from the sense circuit (VRS). The switching is done by using [[adi>ADG884]]. The full scale voltage measured by the ADC is 4.096 V. The hardware also allows for two main modes of operation: <fc #008000>heater mode and sensor resistance measurement mode</fc>. In heater mode, the [[adi>AD7988-1]] ADC receives as input the heater voltage (VH) while in sensor mode the input is the voltage from the sense circuit (VRS). The switching is done by using [[adi>ADG884]]. The full scale voltage measured by the ADC is 4.096 V.
resources/eval/user-guides/arduino-uno/reference_designs/demo_cn0395.txt · Last modified: 07 Jan 2021 09:41 by Ioana Chelaru