Q: Can you do calibration on part in the field ?
A: Yes - the part has an infield calibration routine which removes offsets/gains and some switch leakage for extremely accurate performance.
The No Factory Cal and AFE Example chapters cover this in Userguide…
Hi,
I am evaluating Impedance measurement example for ADuCM350 in 2-wire configuration. But the waveform I am observing in DSO is noisy and peek to peak is wrong. But I am gett.ing correct frequency that I have set in firmware(I have changed the frequency…
Q: I would like to use the ADuCM350 to do potentiostat type measurements ?
A: Please refer to AN-1281 and the Amperometric example code in the Software Development Kit. Details in Featured Content on ADuCM350 Engineerzone homepage.
Q: Can I put a +200mV…
ADuCM350 is default configured for bipolar current measurements centered around the TIA bias voltage of 1.1V.
The device needs to be configured with a bleed resistor to optimally measure a unipolar current.
See attached slideset and adjustements to…
Q: How do I load a *.hex file to the ADuCM350?
A: When code is compiled and built, EWARM will produce an output file. This output file can be a number of types (e.g. *.out, *.hex, *.bin; the desired type is specified in the project options). The…
1. What bit rates are supported by the I2C interface?
>> The I2C channel can be set to operate in fast mode (400 kHz) or standard mode (100 kHz).
2. How many slaves can be addressed?
>> Supports four 7-bit device addresses in the slave…
1. How do I generate sufficient entropy with the RAND engine?
>> The length register specifies the number of samples for which the RNG should run to accumulate sufficient entropy. Any number of iterations can be run. As an example, 112 bits of…
1. Are there details available on power consumption during various power modes?
>> Please refer to AN-1282 for details
2. Do I need to explicitly disable a module/peripheral when not used in order to save power?
>> No. The modules are auto…
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…
