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tk1
Level 1
Level 1
5 replies posted First like received 25 sign-ins

Please tell me the operating principle of the 5th generation capsense csd.
What are the tuning parameters?

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1 Solution
MiNe_85951
Level 7
Level 7
Distributor - TED (Japan)
50 likes received 500 replies posted 50 solutions authored

Hi,

 

CapSense GEN5 is described in AN85951.

 

Figure 44 is Block Diagram

MaMi_1205306_0-1679403152298.png

 

CapSense GEN5 raw count formula

MaMi_1205306_2-1679403658797.pngMaMi_1205306_3-1679403688985.png

 

CapSense GEN5 does not use an IDAC, it consists of a clock and an external capacitor.
Therefore, CapSense GEN5 can be tuned only with Nsub, Sense clock divider,  compensation CDAC divider, Cref and Ccomp.

Among them, tuning can be done mainly with Nsub.

 

/* AN85951 URL */

https://www.infineon.com/dgdl/Infineon-AN85951_PSoC_4_and_PSoC_6_MCU_CapSense_Design_Guide-Applicati...

 

Regards,

View solution in original post

2 Replies
MiNe_85951
Level 7
Level 7
Distributor - TED (Japan)
50 likes received 500 replies posted 50 solutions authored

Hi,

 

CapSense GEN5 is described in AN85951.

 

Figure 44 is Block Diagram

MaMi_1205306_0-1679403152298.png

 

CapSense GEN5 raw count formula

MaMi_1205306_2-1679403658797.pngMaMi_1205306_3-1679403688985.png

 

CapSense GEN5 does not use an IDAC, it consists of a clock and an external capacitor.
Therefore, CapSense GEN5 can be tuned only with Nsub, Sense clock divider,  compensation CDAC divider, Cref and Ccomp.

Among them, tuning can be done mainly with Nsub.

 

/* AN85951 URL */

https://www.infineon.com/dgdl/Infineon-AN85951_PSoC_4_and_PSoC_6_MCU_CapSense_Design_Guide-Applicati...

 

Regards,

tk1
Level 1
Level 1
5 replies posted First like received 25 sign-ins

thank you

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