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I am interfacing this gas sensor to the ADC of TI CC1352P. May I know can I directly connect the output of this gas sensor to ADC (I mean after the gas sensor output I will keep an RC circuit with ...
#3: Post edited
by
newbie
·
2025-08-13T15:24:38Z (about 1 year ago)
I am interfacing [this gas sensor](https://ametekcdn.azureedge.net/mediafiles/project/oneweb/oneweb/alphasense/products/datasheets/alphasense_pidx-a-040_datasheet_en_1.pdf?revision:d31c21ac-2ec6-4c60-b335-1f8f2971e673) to the ADC of [TI CC1352P](https://www.ti.com/lit/ds/symlink/cc1352p.pdf?ts=1755064291749). **May I know can I directly connect the output of this gas sensor to ADC or do I need to place a unity gain buffer before the ADC.**- My calculations about the gas sensor is given below.
- I am interfacing [this gas sensor](https://ametekcdn.azureedge.net/mediafiles/project/oneweb/oneweb/alphasense/products/datasheets/alphasense_pidx-a-040_datasheet_en_1.pdf?revision:d31c21ac-2ec6-4c60-b335-1f8f2971e673) to the ADC of [TI CC1352P](https://www.ti.com/lit/ds/symlink/cc1352p.pdf?ts=1755064291749). **May I know can I directly connect the output of this gas sensor to ADC (I mean after the gas sensor output I will keep an RC circuit with some cut off frequency less than 100Hz) or do I need to place a unity gain buffer before the ADC.**
- My calculations about the gas sensor is given below.
- 
- I found some circuits in this application note [from Alphasense](https://ametekcdn.azureedge.net/mediafiles/project/oneweb/oneweb/alphasense/products/application%20notes/aan_303-05_app-note_v0_en_1.pdf?revision:f8829d2b-6e69-4750-8ed8-84b66075815d).
- The below imabe from the application note.This image is not clear to me.May I know the portion shown in the red box represents the gas sensor.
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- I beleve I can use the image shown below in the Yellow box.Kindly share your thoughts.
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#2: Post edited
by
newbie
·
2025-08-13T14:36:07Z (about 1 year ago)
I am interfacing [this gas sensor](https://ametekcdn.azureedge.net/mediafiles/project/oneweb/oneweb/alphasense/products/datasheets/alphasense_pidx-a-040_datasheet_en_1.pdf?revision:d31c21ac-2ec6-4c60-b335-1f8f2971e673) to the ADC of [TI CC1352P](https://www.ti.com/lit/ds/symlink/cc1352p.pdf?ts=1755064291749). May I know can I directly connect the output of this gas sensor to ADC or do I need to place a unity gain buffer before the ADC.- My calculations about the gas sensor is given below.
- 
- I am interfacing [this gas sensor](https://ametekcdn.azureedge.net/mediafiles/project/oneweb/oneweb/alphasense/products/datasheets/alphasense_pidx-a-040_datasheet_en_1.pdf?revision:d31c21ac-2ec6-4c60-b335-1f8f2971e673) to the ADC of [TI CC1352P](https://www.ti.com/lit/ds/symlink/cc1352p.pdf?ts=1755064291749). **May I know can I directly connect the output of this gas sensor to ADC or do I need to place a unity gain buffer before the ADC.**
- My calculations about the gas sensor is given below.
- 
#1: Initial revision
by
newbie
·
2025-08-13T14:35:24Z (about 1 year ago)
PID Gas sensor interfacing with ADC
I am interfacing [this gas sensor](https://ametekcdn.azureedge.net/mediafiles/project/oneweb/oneweb/alphasense/products/datasheets/alphasense_pidx-a-040_datasheet_en_1.pdf?revision:d31c21ac-2ec6-4c60-b335-1f8f2971e673) to the ADC of [TI CC1352P](https://www.ti.com/lit/ds/symlink/cc1352p.pdf?ts=1755064291749). May I know can I directly connect the output of this gas sensor to ADC or do I need to place a unity gain buffer before the ADC. My calculations about the gas sensor is given below. 