Part Number: ADS7957 Hello,
my target is to set the ADS7957 IOs per SPI command. Problem: I can see the set output values neither on the SDO data (if this mode is selected), nor on the outputs.
I can confirm that the communication itself is working…
Hi Azad,
Great questions, and your intuition is correct.
1) The pad on the ADS7957 VQFN package should be connected to the analog ground on your board. This is a low power device (14.5 mW typical) so heat dissipation is part of the reason but not…
Hi Takumi San
Please my answers to your questions
1. Yes your understanding is correct.
After power-on reset device by default operates in manual mode. After first CS falling edge, first SDO data frame is invalid and should be discarded. When you…
Part Number: ADS7957-Q1 Hi,
Let me ask you some questions about Serial I/F timing of ADS7957-Q1 as below.
Q) 7.8 Timing Requirements, page 11
There is a table about I/F timing on 11 page, "7.8 Timing Requirements".
This timing specification is…
Hi,
I would like to ask you a question about the sequence of power supply.
There are 3 power supplies, +VA, +VBD, REFP, on the device.
I understood that the sequence of these power supplies is, +VA ---> REFP ---> +VB. (from Datasheet P42)
Is my…
Part Number: ADS7957-Q1 Hi,
I would like to ask you some basic questions about the relation between input source impedance and throughput rate as below.
Q1) Figure 58, datasheet page 40
There is a description "Note A" and there describes that "Rsource…
Other Parts Discussed in Thread: ADS7957 Hi,
I can't control the ADS7957 correctly. I tried every mode and the mux is stuck on channel 0. Here's what I want to do.
By default, the ADS7957 is in manual mode, channel 0 selected. So I just want to loop…
Other Parts Discussed in Thread: ADS7957 , TMS320F28335 I'm having a similar problem using mode 1. Has this issue been resolved and if so can it be posted here.
Thanks,
Jay
