Difference between revisions of "IntegratedCircuits"
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* Dual Slope - Integrator ramp up, then count clock cycles as it goes down. | * Dual Slope - Integrator ramp up, then count clock cycles as it goes down. | ||
* Sucessive Approximation Converter / SAR - The ADC that calculates multiple times based on the internal DAC or reference voltage, narrowing down the voltage to the correct answer (within the # of bits it is). | * Sucessive Approximation Converter / SAR - The ADC that calculates multiple times based on the internal DAC or reference voltage, narrowing down the voltage to the correct answer (within the # of bits it is). | ||
| − | AoE disagrees with the definition of the SAR, and also discusses a few other types of ADCs, though ultimately categorizes them into 4 categories (though 1 and 2 appear similar and also 3 and 4 appear similar). Basic principles between them are similar, but I'm sure the devil of complexity is in the details. According to METE, you are either comparing voltages, or counting based on integration. | + | AoE disagrees with the definition of the SAR, and also discusses a few other types of ADCs, though ultimately categorizes them into 4 categories (though 1 and 2 appear similar and also 3 and 4 appear similar). Basic principles between them are similar, but I'm sure the devil of complexity is in the details. According to METE, you are either comparing voltages, or counting based on integration. "With a name like Delta Sigma, it has to be complex." |
===List=== | ===List=== | ||
Latest revision as of 13:41, 26 February 2025
I will start a cheese company. Integrated Cheese.
Look at the die, and you will understand how it works. Then, say: "IC".
"This is how you recycle electronics"
IC Design
As you go smaller you get less voltage but go faster and have higher frequency. Therefore, instead of measuring voltage or current you might measure frequency changes, because high frequency is more accessible than access to voltage or current. Per amp hour 579.
74 Series Logic
People don't usually talk about these, but in addition to standard optocouplers, there are also logic gate optocouplers. SCRs as well.
ADCs
Making analog to digital converters is as simple as A-D-C.
Types
AoE covers these thoroughly in 13.5.2. A simple write up is in Modern Electronic Test Equipment 2nd Edition, by K. Brindley. He says:
- Dual Slope - Integrator ramp up, then count clock cycles as it goes down.
- Sucessive Approximation Converter / SAR - The ADC that calculates multiple times based on the internal DAC or reference voltage, narrowing down the voltage to the correct answer (within the # of bits it is).
AoE disagrees with the definition of the SAR, and also discusses a few other types of ADCs, though ultimately categorizes them into 4 categories (though 1 and 2 appear similar and also 3 and 4 appear similar). Basic principles between them are similar, but I'm sure the devil of complexity is in the details. According to METE, you are either comparing voltages, or counting based on integration. "With a name like Delta Sigma, it has to be complex."
List
- https://www.eevblog.com/forum/projects/need-to-know-about-generic-arm-processor-die-manufacturers/msg5700541/?topicseen#msg5700541 5-10k for a micro wafer
Voltage references at 2.048 volts
Here's one example: LM4040 - https://www.ti.com/lit/ds/symlink/lm4040.pdf It can also run at 4.096 volts. It's used in Nuts and Volts 2020 issue 5 as a (stable) reference voltage for the Nano and SS495A hall effect sensor. It is a zener diode.
