Part Number: DAC8811
Hi all,
I have a question about the update timing of DAC output.
The below section of DAC8811 datasheet described that when CS sets to high the new data from the serial register is loaded to DAC register.
However, the section of 8.5.1 DAC8811 Input Shift Register described that the DAC output is updated on 16th rising edge of SCLK as below;
Which is the correct behavior?
Regards,
Toshi
Part Number: DAC43608
Hi team,
Could you support the following question from my customer?
After sending the software reset command, how long does this device have to wait for the next command ? Customer wants to know the interval.
Regards,
Yamaguchi
Part Number: ADS127L01
Hello Ahmed Noeman,
1. How can interface ADS127L01 to Arduino with SPI serial communication?
2. What are settings need to do while interfacing?
3. Please share firmware related document if any
Part Number: DAC3482
Hi Team,
Could you let me know about internal loop filter of DAC3482?
The DAC3482 datasheet shows Figure 56. PLL Block Diagram on page 35. But there is not description about the internal loop filter circuit.
Q1. What is the form/configuration of the internal loop filter circuit and the constant?
Q2. Does the internal filter constant change or be fixed according to the overall division ratio (P × M)?
Q3. Is there a control register / pin to switch loop filter between the internal loop filter and the external loop filter?
Q4. If the external loop filter is connected, is it cascaded to the internal loop filter?
Thank you.
Best Regards,
Koshi Ninomiya
Part Number: ADS1262EVM-PDK
I was testing this EVM in -40'C environment.
During testing in -40'C, the EVM was not controled.
Now, At room temperature, the EVM does not work. I guess the EVM is broken.
As shown below, this EVM is possible to operate up to -40'C .
I want to get the board repaired.
What should I do?
Part Number: ADS124S08EVM
Hello,
i'am using the "ADS124S08EVM" Evaluation Board with the" Delta-Sigma ADC EvaluaTIon Software". For installation the "ADS124S08 Device Package" is needed.
I couldn't find this on the TI website.
Thank you for your help.
Robert
Part Number: ADS131E06
Dear Team,
Please suggest a suitable solution to replace MCP3913.
I am not sure is ADS131E06 our best solution here.
If possible please also drop me a mail for comparison table.
Appreciated!
BR
Kevin
Part Number: ADC124S051
Dear specialists,
Is there somebody who can explain the following?
In the datasheet (page 10 for example) there is a text on the above: "FSAMPLE = 200 ksps to 500 ksps, FSCLK = 3.2 to 8 MHz, FIN = 40.2 kHz".
In the same datasheet one can find the text where it is written that the ADC starts conversion after 3d cycle of SCLK.
How can the ADC manage to covert an input signal if the ADC clock 16 times lower than SCLK (the last number can be calculated from the data)?
I'm trying to use ADC124S051 in some kind of voltmeter. If I measure a DC voltage I get a pretty result. If I try to measure an AC voltage the results are very inaccurate.
Thanks!
Part Number: ADS131A04
Can you provide example SPI driver code for the ADS131A04?
Part Number: ADS7952
I was using GPIOs in the ADS7952 to drive some external relays. In the datasheet it is not clear whether the GPIOs are open collector, push-pull type or has a internal pull up. Can someone clarify this?
Part Number: ADC3424
Hi team,
What is the function between code and input voltage? I cannot find it in the DS. Thanks.
Part Number: ADS8363
I recently bought a AD8363EVM, which I'm currently trying to interface via an SPI controller (FT2232H), I noticed unfortunately
the power connector J4 isn't labelled, so I tried to deduce the pins from the schematic and PCB traces. I can upload a photo of the connections I made if that helps diagnose my problem.
I tied A0- and A1- to GND. And A0+ and A1+ to 5V. And provided an external reference of 2.5V and disconnected jumper JP3 to achieve this.
I'm following https://www.ti.com/lit/ds/symlink/ads8363.pdf
#include <stdio.h>
#include <stdlib.h>
#include <mpsse.h>
int main(void)
{
int retval = EXIT_FAILURE;
struct mpsse_context *adc = NULL;
if((adc = MPSSE(SPI0, TEN_MHZ, LSB)) != NULL && adc->open){
printf("%s initialized at %dHz (SPI mode 0)\n", GetDescription(adc), GetClock(adc));
int z = 0;
for (z = 0; z<2; z++){
Start(adc);
char Txdata[4];
Txdata[0] = 1;
Txdata[1] = 0;
Txdata[2] = 0;
Txdata[3] = 0;
unsigned char * r = Transfer(adc, Txdata, 4);
if (r != NULL) {
int i = 0;
for (i=0;i<4;i++)
printf("%d\n",r[i]);
}
Stop(adc);
}
} else {
printf("Failed to initialize MPSSE: %s\n", ErrorString(adc));
}
Close(adc);
return retval;
}
Part Number: DAC161P997
Hi,
I have a application using photo couple to control output current:
MCU signal through photo couple control output current.
Is such a method feasible?
Is there anything to pay attention to?
thanks.
Part Number: ADS62P24
I have a design where I'm seeing two 'bins' of ADS62P24 behavior regarding Vcm. These 'bins' may be different lots of the ADS62P24, that's not clear to me yet.
One group puts out about ~1.54V on Vcm and has a measured ADC gain error of about -1%.
A second group puts out ~1.63V on Vcm and has a measured ADC gain error of about -6%.
Ok...so my questions:
1) What is the expected range of Vcm. The datasheet just says 1.5V typical. Does 1.63 represent an abnormality?
2) Does Vcm correlate directly back to the internal reference? My data shows such a correlation but the datasheet isn't entirely clear.
Part Number: ADC128S102
Hi,
I am trying to determine the following: When CS_BAR is pulled high, what is the state of the SCLK, DOUT, and input channels?
Thanks,
HSG
Part Number: ADS8363
Part Number: AFE4300EVM-PDK
We are having this problem where the ADC Voltage slowly drops to -1.7V whenever we use the terminals for weight scale. However, when we use the simulation circuit, it does not slope downwards. We tried measuring the voltage of the terminals and we can see the voltage dropping, like its a capacitor, discharging. We do not know the cause of this as it was working just a few hours ago.
Part Number: ADS1278EVM-PDK
I need to collect 24bit sensor data from 8 channels at 20k+sps. I have the following questions:
1. Is that achievable from the SPI port of the ADS1278EVM-PDK?
2. Could you provide me with a software library for Arduino board?
Thanks.
Part Number: ADS54J66
Hello,
I have a couple of questions about ADS54J66 register setting as follows.
Q1:
Datasheet 7.6.3.8.2 says JESD PLL MODE bit is bit 0 of Register 16h in JESD Analog Page.
However, in Table 72 STEP 6, to set PLL mode 40x for channel A, B, C and D, REGISTER DATA is 02h, not 01h as if JESD PLL MODE bit is bit 1 of Register 16h in JESD Analog Page.
Which is really JESD PLL MODE bit, bit0 or bit1 of Register 16h in JESD Analog Page?
Q2:
In Table 72 STEP 7, to enable JESD MODE control for A, B, REGISTER ADDRESS =6000h and REGISTER DATA = 20h. However, 2.6.3.7.1 says JESD MODE EN bit is bit 6 of Register 0h in JESD Digital Page. Which is really JESD MODE EN bit, bit6 or bit5 of Register 0h in JESD Digital Page?
Best regards,
K.Hirano
Part Number: ADS1298
Hi, I am developing an application that uses the ADS1298 with lead off detection.
To compensate for the error introduced by using DC Lead Off detection, I would like to calculate the theoretical offset voltage it creates, and use that for calibration.
Q: Is this a good way to calibrate for noise introduced by lead off detection?
Q: Or should I be looking at a different approach?
I have looked at the documentation provided here: http://www.ti.com/lit/an/sbaa196a/sbaa196a.pdf
In section 4.1, example calculations of the offset voltage is provided.
Q: But I do not understand where the current i_b of 200nA in equation (6) is calculated? Could you help me with this?
Br. Casper Kronborg Pedersen
