Education of the republic of uzbekistan tashkent state technical university named after islam karimov

Electrical and Computer Engineering
151 
For the 10-bit version, under the same conditions, the resolution of the ADC will be 4 
mV, and the 521SA3 comparator can again be used to implement it. Knowing the turn-on time 
of this comparator during overexcitation of the order of 200 ... 400 μV and the settling time of a 
10-bit DAC with an error of 0.5 ... 0.2 EMP, one can similarly determine its conversion time. 
RESULTS
.When processing information in automated analytical information-measuring 
systems, the following devices and instruments are used: 
1. Sensors 
2. Amplifiers 
3. ADC 
4. Specialized computing devices 
5.PC 
In analytical information-measuring systems, the first three points are used without fail. 
Depending on the task at hand, the fourth and fifth points can be used both separately and 
together. In the chemical and food industries, when using analytical information and measuring 
systems to determine the percentage of the main component and the presence of toxic trace 
impurities, and autoscaling amplifier should be used. 
When building specialized computing devices and amplifiers with autoscaling, it is 
advisable to use digital comparators. In this case, the error is significantly reduced and the 
processing speed of the useful signal increases. 
Figure 2. a schematic diagram of a 
digital comparator based on a US 4516 microcircuit is provided. Based on two six-bit 
comparison circuits, a twelve-bit comparison circuit is built. Here, a 12-bit signal from the 
output of the analog-to-digital converter is fed to the input 
𝑓
1
. A 12-bit signal from the output 
of another ADC or a digital 12-bit code corresponding to a certain threshold signal is fed to the 
𝑓
2
input. At the output 
Q
of microcircuits 
M2
, a signal will appear at the moment when the 
input codes 
𝑓
1
and 
𝑓
2
are equal.