Part Number: ADC121S021 Other Parts Discussed in Thread: ADC121C021 I need to read this ADC121S021 with the GPIO pins of a microcontroller that runs at 4 MHz.
The input of the ADC is connected to a 100 kOhm/220nF filter. The application takes a single…
Thanks Paul,
I realized that at some point I may have crossed the VA and VIN lines, so I've "re-breadboarded" this with a new ADC121S021 device to remove the chance that the other chip had been damaged.
I added a 100uF cap and a 2.5uS delay. The divider…
Other Parts Discussed in Thread: ADC121S021 Hello All.
I have a question about ADC121S021 from customer(SMC).
Q1 About SDATA(5pin), Would you please teach me the limit level of the SINK electric current?
Q2 Customer wants to let the first side …
Other Parts Discussed in Thread: ADC121S021 Hello,
I would like to confirm the power on reset(POR) and power sequence for ADC121S021.
1. Does this device have the POR circuit?
If it does, please let me know the condition required reset.
2. Is…
Other Parts Discussed in Thread: ADC121S021 , LM1117
Hi All,
I use ADC121S021 to measure analog signal from 1.2V battery and send data via PIC18F4550 microcontroller from microchip. I can correctly measure voltage from battery but the data fluctuate…
Hi Phil,
It doesn't seem like we have any 4 input channel device that has such large pad spacing. This 1 channel part, ADC121S021 , has a spacing of 0.45mm. There is also this 2 channel part, ADC122S021 .
Out of curiosity, what is your project application…
Hello,
The ADC121S021 is part of the same family of parts as the ADC121S101-Q1 (they are based on the same design). You should see performance close to what is shown in the ADC121S021 datasheet. Please remember though, that the performance that is…
I'm sorry I can't attach the schematics, because it is a company product.
I can describe the part related to DMA.
First I use a stereo audio codec chip called SSM2604, which features two 24-bit analog-to-digital converter (ADC) channels and two 24…
Hi Gaston,
I assume you are talking about the ADC121S021.
There are two ways you can do this.
1. You can run the clock at 80kHz (for 4ksps). There will be some sagging of the voltage on the internal sampling cap, but it will be minor. You are…
