Q: What is the difference between SPI0/1 and SPIH?
A: Each SPI has identical functionality, though SPIH is capable of higher transfer rates. From an SPI programming and users model perspective, SPIH, SPI0, and SPI1 are identical. The main difference…
Setup
Note this is an example "reference" to setup the ADuCM350 for 4-Wire Skin impedance measurements.
4-Wire measurements are for Absolute Accuracy and the ADuCM350 requires an external In-Amp.
For Relative measurements, the ADuCM350…
Q: What is the maximum common mode ? ADC input range ? Etc
A: Please refer to the "AFE Signal Swings" section in AFE Excitation Loop chapter of UG-587 and the ADC Measurement section
in ADC Chapter of UG-587.
Q: Details on main TIA specifications…
Attached is the errata sheet for the ADuCM350 I2C serial interface
Hi
Can anyone answer what is the range of impedances that we can measure using ADuCM350. Please reply
System Setup
Software Configuration…
Q: Looking for details on current consumption for Hibernate / AFE Measurements ?
A: Please refer to AN-1282 in Design Documentation.
Q: Can I get the AFE sequencer to save power in AFE measurement mode ?
A: Yes - during AFE measurement mode, if…
Q: What is the leakage on switches ?
A: Typical of 85pA on switches - some switches have far less leakage. Review datasheet for details.
Q: Do I need to reset switches after hibernate ?
A: No. Switches maintain states in hibernate mode. See Power…
Q: How does the Touch and Release Algorithm input table align with the Proximity Block Diagram ?
A:
See block diagram below with Input options displayed in red.
e.g. 001 is the output fron the IIR Filter block (Post Ranking and Averaging).
Q: How do I start writing an AFE squence ?
A: Advise to use the example sequences in the Software Development Kit as a reference, e.g. ImpedanceMeasurement_2wire.c
Then use the ADuCM350 ASH (AFE Sequence Helper) Tool to modify the sequence.
Link to ADuCM350…
