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Hi stenzer,
"TI-doesn't warranty its accuracy or completeness" - is what needs to be considered.
Its so simple - "So, Would a result. Capacitance value (refere to digial code) ）change according to Excitation Voltage setting?" (the thread has 2 valid posts)
If you want to help the question is...
Hi,
1. What is the Analog Devices Stand on AN-1585 ? (For Above - Take Any TI - Datasheet)
2. Even for Range Extension Circuit Resistors R1, R2 have Tolerances, Aging, ... AD8515 opamp has offset and other Errors.
--Without Analog Devices Specifying \( f_{error}(V_{ref},V_{exca}) \) does...
Hi,
Citation needed.
Exactly as described in CN-0346 (~ AN-1585) - Circuit Note, with **broken link removed** from iST being Capacitive Humidity Sensor
Hi,
I thought it would be irrelevant to main conversation and the image shared is not edible for public in general!
Exactly what is described in Pg-3 of AN-1585 - Application Note -Characteristics of Capacitive Humidity Sensor
(Also Pg-2 of CN-0346 for Better Understanding)
Hi,
Can we Safely Assume AD7745 also employs similar Mechanisms of MAS6510 (So that we can do Accuracy Calculations Theoretically), Equation Given Below for MAS6510 sheds some light for that IC.
[3] Capacitance to Digital Converter Based Parallelized Multi-Channel Measurement System---...
Hi, thanks for detailed response
That -detailed analysis- could shed some light into internal operation of AD7745 IC.
Interested in Accuracy of AD7745 when Device is Scaled - Not Mentioned in Datasheet. (e.g. Resistors can be scaled Linearly - Connecting them in Series, Non-Linearly -...
Hi FvM,
True, You are effectively inverting effective Excitation Voltage.
+ Need to understand operating Principle -any mathematical model ("processing" - is what needs to be understood) of AD7745 - CDC Operation (e.g. Ratio Metric method is used for Unknown Resistor Measurement Operation).
Hi stenzer, thanks for quick response...
-> The Results gets negative when you just interchange R1, R2 Resistors ? (I understood Q=CV, is the Device Ratio metric [1] or is it sensitive to Excitation voltage Level?)
+ ECX-Excitation Frequency(Signal Frequency) = 32KHz, Update Rate = [10,90] Hz...
Hi KlaussST,
The Information I Need is Simple:
To Complete/Correct and Map the given Equation to Figure 2 CDC Architecture. (Just the Operating Principle - Can you point to right Information in Internet?)
otherwise we cant understand :
1. How (much) Scaling Factor F reduces Accuracy of...
Hi Everyone,
Is There a way to Insert C-Code into a Model/Symbol into Altium Designer instead of SPICE Model and run Simulation ....
or at-least C Code to SPICE Converter Software...
(OrCAD Points one in that direction -Pspice-Simulink Integratoin but SIMULINK instead of C-Code)
This could be...
You Need to Use a Power Amplifier for The Purpose which can deliver ~ >10 W for Reasonable Sound Levels... Study Amplifier Construction in **broken link removed** || You Can Search "Amplifier DIY" in Aliexpress--eg-TDA7297
The Information is Lost While Sampling Itself-How can you expect to recover Signal while reconstructing it...
Sampling Theorem Requires the Sampled Signal to be a Precise Value While Sampling. What you sample is what you recover.
This article about Sampling Theorem - National Semiconductor...
You Can Read to get to Know Parameters associated with Capacitors:
+ **broken link removed**
+ Section 4: Technical Summary and Application Guidelines -AVX
+ GRM219R61H105KA73D - Murata Capacitor Characteristics
apart from Wikipedia about Ceramic Capacitors.
Ceramic Capacitor--{X5R,X7R}...
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