Also,
How does the ESR of the recommended 2.2 uF tantalum capacitor connected from the the "CAP" pin to ground effect the performance? I see curves of SINAD and THD vs cap ESR in the ADS8509 (the recommended replacement for the ADS7809). We…
Other Parts Discussed in Thread: ADS7809 , ADS8509 Hello Rafael ,
I am using in my design 8 ADS7809 ADCs, which are all connected to one external reference voltage. All ADCs are bypassed with a tantal capacitor of 2.2uF to ground on each reference pin as…
Other Parts Discussed in Thread: ADS7809 I have an ADS7809 in an existing design. We are only sampling at around 100Hz. We are having a problem with crosstalk between adjacent samples with large dynamic ranges. Is it possible that we need to increase the…
Other Parts Discussed in Thread: MSP430FG4618 , ADS7809 , ADS8509 Does anyone have any experience with ADS7809 A/D converter with MSP430? I’m trying to use MSP430FG4618 to control ADS7809 (external clock, internal reference), but has no success. Can someone…
Other Parts Discussed in Thread: ADS7809 , ADS8509 On the ADS7809 A/D converter. Running in external clock mode, it's not obvious when the data is ready using read after conversion. What would be the best way to indicate data valid? Would it be on the next…
Hi Hattori-san,
Yes, the block diagram on the first page should show the series resistor to ground. The ADS8509 is not a direct replacement for the competitor part you mentioned. Please look at the ADS7809 which has the same input impedance (and block…
Hello Mark,
I will use rich text in the future.
1. The external ADC is a ADS7809 or equivalent, we have several sources. Yes I intended SPI mode. I copied then modified Example_2833xMcBSP_DLB.c. Next I will look at Example_2833xMcBSP_SPI_DLB.c.
2. I did…
Other Parts Discussed in Thread: ADS8556 , ADS7809 Hello everyone!
I´m currently working with ADS8556 but I´m facing some issues. I tried to use it on both communications modes (SPI and parallel) with the same behavior. I already tried internal and external…
Hi Aaron,
Your post started off with the ADS7812, but the schematic you attached shows the ADS7809 - which part is it that you are having trouble with? In general, I've not seen anyone having with issues using the ADS7812. The ADS7809 can get into…
Part Number: ADS8513 Tool/software: TI C/C++ Compiler Hello everyone:
Here's a question about the out put data of the device. When I collect voltages data in the ±10V, the result supposed to be like this according to the reference book:
-…
