Author Topic: Attach power to vdd or vpp on thermal sensor?  (Read 98 times)

0 Members and 1 Guest are viewing this topic.

Offline Ducttape

  • Contributor
  • Posts: 40
  • Country: us
Attach power to vdd or vpp on thermal sensor?
« on: May 17, 2018, 06:56:19 am »
I have a Grid-Eye 8x8 thermal sensor (AMG8854). Any tutorials I've found using this sensor assume the AdaFruit breakout board (using similar AMG8833). Adafruit labeled their power connection 'VIN'. My Panasonic version of the same chip offers both 'VPP' and 'VDD' connections. What's the difference (i.e. which should I use)? The attached photo shows the Panasonic datasheet info on top and the Adafruit board below.
« Last Edit: May 17, 2018, 07:00:39 am by Ducttape »
 

Online rstofer

  • Super Contributor
  • ***
  • Posts: 4042
  • Country: us
Re: Attach power to vdd or vpp on thermal sensor?
« Reply #1 on: May 17, 2018, 07:05:06 am »
You could check the schematic for the Adafruit board or even the datasheet for the sensor.
AFAICT, Vpp isn't used...

Typically, Vpp is used for device programming
 
The following users thanked this post: Ducttape

Offline Nerull

  • Frequent Contributor
  • **
  • Posts: 503
Re: Attach power to vdd or vpp on thermal sensor?
« Reply #2 on: May 17, 2018, 07:14:03 am »
https://industrial.panasonic.com/cdbs/www-data/pdf/ADI8000/ADI8000C62.pdf

"Make electrical potential of terminals 9 [VDD] and 13 [VPP] the same."



When you have a question about how a chip should be connected, check the datasheet. You should probably be reading datasheets for any chip you're using anyway.
« Last Edit: May 17, 2018, 07:17:30 am by Nerull »
 
The following users thanked this post: Ducttape

Offline floobydust

  • Super Contributor
  • ***
  • Posts: 1315
  • Country: ca
Re: Attach power to vdd or vpp on thermal sensor?
« Reply #3 on: May 17, 2018, 07:27:33 am »
AVDD-PC 20R (not R1 200R in your pic)
 

Offline Ducttape

  • Contributor
  • Posts: 40
  • Country: us
Re: Attach power to vdd or vpp on thermal sensor?
« Reply #4 on: May 17, 2018, 07:53:37 am »
AVDD-PC 20R (not R1 200R in your pic)

My pic is from the Panasonic datasheet. Are you saying there's an error in it?
« Last Edit: May 17, 2018, 08:17:50 am by Ducttape »
 

Offline Ducttape

  • Contributor
  • Posts: 40
  • Country: us
Re: Attach power to vdd or vpp on thermal sensor?
« Reply #5 on: May 17, 2018, 08:05:15 am »

When you have a question about how a chip should be connected, check the datasheet.

My pic was taken from the Panasonic datasheet, from Digikey, entitled "Infrared Array Sensor Grid-EYE (AMG8854M01), which doesn't include the circuit diagram in your post. Thanks for the additional info.
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf