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resources:eval:user-guides:eval-adicup360:hardware:cn0395 [07 Jul 2017 17:13] – [Software] Ramon Glenn Amparoresources:eval:user-guides:eval-adicup360:hardware:cn0395 [29 Jul 2021 05:20] (current) – [Registration] Zuedmar Arceo
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 The circuit below is an arduino compatible, single supply 16-bit volatile organic compound detector using a metal oxide sensor. It uses [[ADI>ADN8810]] to precisely control the current running through the sensor to get to within the 1% voltage accuracy needed for the heating element of the sensor. The circuit below is an arduino compatible, single supply 16-bit volatile organic compound detector using a metal oxide sensor. It uses [[ADI>ADN8810]] to precisely control the current running through the sensor to get to within the 1% voltage accuracy needed for the heating element of the sensor.
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-{{ :resources:eval:user-guides:eval-adicup360:hardware:cn0395:eval-cn0395-ardz.jpg |}}+{{ :resources:eval:user-guides:eval-adicup360:hardware:cn0395:cn395_00_1024.gif |}}
  
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 [[ADI>CN0395]] measures indoor air quality by utilizing a Metal Oxide Sensor to detect gases composed of volatile organic compounds. The sensor is composed of a heating resistor and a sensing resistor. When the sense resistor is heated its value changes as a function of the concentrations of different gasses. [[ADI>CN0395]] measures indoor air quality by utilizing a Metal Oxide Sensor to detect gases composed of volatile organic compounds. The sensor is composed of a heating resistor and a sensing resistor. When the sense resistor is heated its value changes as a function of the concentrations of different gasses.
 +{{ :resources:eval:user-guides:eval-adicup360:hardware:cn0395:eval-cn0395-ardz.jpg |}}
  
 =====Connectors and Jumper Configurations===== =====Connectors and Jumper Configurations=====
 +{{ :resources:eval:user-guides:eval-adicup360:hardware:cn0395:jumper_config.jpg |{{:resources:eval:user-guides:eval-adicup360:hardware:cn0397:cn0397_chip_select.jpg|}}
 +
 ==== Headers ==== ==== Headers ====
  
-{{ :resources:eval:user-guides:eval-adicup360:hardware:cn0395:jumper_config.jpg |{{:resources:eval:user-guides:eval-adicup360:hardware:cn0397:cn0397_chip_select.jpg|}}+=== P1 === 
 + 
 +The current output DAC, [[ADI>ADN8810]], has an output voltage compliance that needs to be met to maintain a linear current output. This can be done by putting a jumper on position 2 and 3 which attaches the ENCOMP pin of the part to ground for output voltages up to 2V. 
 + 
 +For higher output voltages that 2V, tie the ENCOMP pin to +5V to maintain the output stability of the part. 
 + 
 +=== P2 === 
 P2 header selects the current path from the current output DAC, [[ADI>ADN8810]]. It is populated across RH+ by default. P2 header selects the current path from the current output DAC, [[ADI>ADN8810]]. It is populated across RH+ by default.
  
-| Silkscreen | Current Path    | Pins |+^ Silkscreen ^ Current Path    ^ Pins ^
 | RCAL1      | 71.5Ω           | 1 & 2| | RCAL1      | 71.5Ω           | 1 & 2|
 | RCAL1      | 10.0Ω           | 3 & 4| | RCAL1      | 10.0Ω           | 3 & 4|
 | RH+        | Heating Resistor| 5 & 6| | RH+        | Heating Resistor| 5 & 6|
- 
-A jumper  is placed across pins 2 & 3 or GND, as default to maintain the performance specifications of [[ADI>ADN8810]]. 
 ==== Sensor ==== ==== Sensor ====
  
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   * [[http://www.figarosensor.com/products/entry/tgs8100.html|TGS8100]]   * [[http://www.figarosensor.com/products/entry/tgs8100.html|TGS8100]]
   * [[http://www.alphasense.com/index.php/products/metal-oxide-sensors-2/|VOC-MF1]]   * [[http://www.alphasense.com/index.php/products/metal-oxide-sensors-2/|VOC-MF1]]
- + 
 +If you are using a different sensor, you will need to wire in the appropriate signals into the board via the screw terminal (P8).  This also means that you will have to remove the TGS8100 sensor that comes on the board by default.  Below is a table of how to use P8 to input other sensors. 
 +=== P8 === 
 + 
 +^ Silkscreen Name ^ Pin Number ^ Description ^ 
 +| RH+      | Pin 1           | Postive Pin of Heating Resistor | 
 +| AGND     | Pin 2           | Negative Pin of Heating Resistor| 
 +| RS+      | Pin 3           | Postive Pin of Sensing Resistor| 
 +| AGND     | Pin 4           | Negative Pin of Sensing Resistor|  
 ====Spacers==== ====Spacers====
  
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 Sense resistors (RSN) can be calculated by using the formula below: Sense resistors (RSN) can be calculated by using the formula below:
  
-RSN=4.096/(10* Full Scale Current)+RSN= 4.096/(10* Full Scale Current)
  
 ====Button==== ====Button====
  
-Pressing push button S2 resets the temperature and humidity sensor [[https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/2_Humidity_Sensors/Sensirion_Humidity_Sensors_SHT3x_Datasheet_digital.pdf|SHT30]]. +Pressing push button S2 allows the user to do a hard reset of the temperature and humidity sensor [[https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/2_Humidity_Sensors/Sensirion_Humidity_Sensors_SHT3x_Datasheet_digital.pdf|SHT30]].
 ===== Schematic, PCB Layout, Bill of Materials ===== ===== Schematic, PCB Layout, Bill of Materials =====
 <WRAP round 80% download> <WRAP round 80% download>
  
-[[http://www.analog.com/cn0395-designsupport|EVAL-CN0395-ARDZ Design & Integration Files]]+[[adi>cn0395-designsupport|EVAL-CN0395-ARDZ Design & Integration Files]]
   * Schematics    * Schematics 
   * PCB Layout    * PCB Layout 
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 ===== Software ===== ===== Software =====
-  * [[https://wiki.analog.com/resources/eval/user-guides/eval-adicup360/reference_designs/demo_cn0395|CN0395 ADICUP360 Demo Documentation]]   +  * [[/resources/eval/user-guides/eval-adicup360/reference_designs/demo_cn0395|CN0395 ADICUP360 Demo Documentation]]    
 + 
 +=====Registration=====  
 +<WRAP round tip 80% > 
 +Receive software update notifications, documentation updates, view the latest videos, and more when you register your hardware.  [[reg>EVAL-CN0395-ARDZ?&v=RevA|Register]] to receive all these great benefits and more! 
 +</WRAP>
  
-{{navigation EVAL-ADICUP360#base_board|EVAL-ADICUP360 Base Board#.:|Hardware#none}}+//End of Document//
resources/eval/user-guides/eval-adicup360/hardware/cn0395.1499440439.txt.gz · Last modified: 07 Jul 2017 17:13 by Ramon Glenn Amparo

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