KCC's Quizzes AQQ304 - A pure logic
1. Quote of the month: "I am not lazy, I'm just in energy-saving mode" - unknown
2. Quiz AQQ304 about finding a pure logic puzzle
Mike is looking at Anne, but Anne is looking at Paul.
Mike is married, but Paul is not.
Question:
Is a married
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September Monthly Blog Quiz! Read the blog, take the quiz, and you could win a gift card
Quiz: How Well Do You Know Adaptive Power Switching?
Is your I/O module overheating? The AD74416H's Adaptive Power Switching (APS) can cut heat dissipation by up to 40% — but how well do you really understand how it works?
Read the blog first: Cooling
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MAX22005
Recommended for New Designs
The MAX22005 is a twelve-channel industrial-grade analog input voltage-mode device that can also be configured as analog-input current-mode device using...
Datasheet
MAX22005 on Analog.com
I am wondering if there is a way to shift the -10-10V input range to be 0-10V to gain more resolution from my inputs.
If not, what would be the best way to apply a voltage offset and gain to maximise this range?
Hi James4832,
As the chip has fixed input range, you'll need an external difference amplifier with gain of 2 in front of the input. Apply +5V precision reference voltage to the negative input (V1). that will shift 0..+10V to -10..+10V. You could also utilize the chip's internal 2.5V reference, in which case you'll need to attenuate the input signal to half and have x4 gain for the difference amp. In that configuration be aware that the reference branch (V1) of the amplifier dynamically loads the internal reference output, possibly degrading the performance of the ADC.
https://www.analog.com/media/en/training-seminars/tutorials/MT-068.pdf
Cheers, heke, AsamaLab
You can get up to 21 effective bit resolution by using lower sampling rate, refer to Table 7 of the datasheet.
You also can shift your 0-10V input to -10-10V input range as Heke suggested, but that requires an additional precision OpAmp and a reference.
