Part Number:VSP5610
Hi,
We are using VSP5610 AFE to capture analog input from function generator i.e. Sine wave, Ramp etc.
We are using 1 MHz sampling clock and applying 1 KHz of sine wave with 1 Vpp and 2 V offset at the analog input pin of the VSP5610.
At the output digital side we are getting sine wave with only half cycle where as half cycle gets clipped. We are using SH mode.
How to recover full sine wave at the digital side ?
Part Number:ADS1274EVM-PDK
The ADS1274EVM evaluation board software has been installed in WIN10, WIN7, WINXP systems, but the driver can not be automatically installed successfully, so I would like to ask TI's great gods, how to solve this problem? Is it necessary to install the corresponding driver plugin to install the evaluation software, where can I download the plugin?
Part Number:TSW1400EVM
Hi,
I am trying to capture raw data using AWR1243EVM+mmWave DevePack+TSW1400EVM.
And there is an issue I want to verify.
In page 23 of RadarStudio_User's_Guide, it mentions that TSW1400 captures frames only for 10 seconds. However, I found a thread (IWR1642BOOST: RadarStudio: My TSW1400 can not capture anything, when i program frame duration with a relatively long vualue) on TI E2E mentioned that the capture time can be extended to 120 seconds if adding 'Capture Timeout in Sec=120' at the bottom of the INI file.
I have tried this method but the result shows that the capture time is still limited to 10 seconds. Thus, I am confused with the maximum capture time of TSW1400EVM. Hope someone can help me solve the problem.
Thank you in advance.
Part Number:ADS8584S
I am using the ADS8584S in a high speed analog acquisition system.
The ADS8584S is set up with CONSTA and CONSTB tied together, CS and RD tied together, 5V power, parallel data mode and +5 and -5 input scale.
The ADS8584S works good and all channels are working. I do have one concerning problem. I am not able to get a data though put faster than 37KHz. If I speed up faster the data from the channels gets shifted over so CH1 is 0 CH2 gets CH1 data and CH4 is lost. I need to collect data at 20KHz and need some averaging behind the data as well so the ADS8584S was attractive with over a 300KHz bandwidth.
I have delays in clock cycles to ensure correct timing and have them set to the minimums that allow proper operation.
I would like to discuss why the throughput of the ADS8584S is so low.
Part Number:ADS1298
Hi,
I am using ADS1298 in my product. I can calculate a sensitivity value based on the information in the datasheet. However, I would like to measure/benchmark this figure. Do you have a standard method for doing this? how would you go about measuring accuracy of any ADC. Considering these chips can measure down to few uV it is not very straight forward to plug in a signal gen to the inputs.
Would high ratios of voltage divider help to generate a low noise low voltage signal in uV range to feed into the ADC?
Wouldn't Johnson noise stop one from using high value resister in this case?
Part Number:ADS131A04
Hello,
I have to do mechanical experiment and capture 4 analogue signals.
I plan to buy evaluation board ADS131A04EVL and connect it to PC to capture digitized signals.
Also I plan to use external processor via SPI and capture same signals via that.
I need to understand if I may do what I want using this evaluation board and later that ADC.
The signal at ADC Channel 0 will be the differential output from tenzo sensor with range from 1mV to 20mV, considering tenzo powers from about 10V DC.
The other ADC Channels 1,2,3 will be the outputs from accelerometer ADXL-337 of X,Y and Z axis.
These outputs of the accelerometer are NOT differential and have a range from 0.9V (at -3G) up to 2.7V (at +3G) when accelerometer is powered from 3.6V DC.
So,I want to know:
1. If I may connect evaluation board to PC and capture all 4 analogue signals for my later calculations at 1000 SPS.
2. If I may use none differential outputs from accelerometer ADXL-337 and directly to connect to ADC ADS131A04 or I will need to make outputs differential first.
3. If I may connect Atmel 328P (Arduino Nano) via SPI 8 Mhz, configure ADC via that and also collect the sampled data of all 4 channels via that SPI into microprocessor.
The sample rate I plan to use at ADC will be not higher than 1000 SPS.
Please help me to understand if I may use evaluation board and later single ADC ADS131A04 chip for what I explained above.
Thank you for your help in advance,
Alex.
Part Number:AFE5851
input range varies with frequency
The output frequency of the signal source is down to 200kHz and 100kHz. The amplitude of the overflow is smaller and smaller, which cannot be reached 1Vpp that the datasheet noted.
Part Number:ADS1293
The register values for the following tests. In addition, the hardware used is ADS1293EVM (SV600846-001, Rev. B). As described in the reply, RLDIN was not short-connected to RLDREF after examination. After RLDIN/RLDREF is short connected, the ripple of 50Hz still exists, and the bias problem is not solved. Want to know how to bias the input signal in unipolar power supply to avoid baseline drift.
| address | value |
| 0x00 | 0x00 |
| 0x01 | 0x11 |
| 0x02 | 0x19 |
| 0x03 | 0x00 |
| 0x04 | 0x00 |
| 0x05 | 0x00 |
| 0x06 | 0x00 |
| 0x07 | 0x07 |
| 0x08 | 0xff |
| 0x09 | 0x00 |
| 0x0a | 0x07 |
| 0x0b | 0x00 |
| 0x0c | 0x04 |
| 0x0d | 0x00 |
| 0x0e | 0x00 |
| 0x0f | 0x00 |
| 0x10 | 0x00 |
| 0x11 | 0x00 |
| 0x12 | 0x04 |
| 0x13 | 0x00 |
| 0x14 | 0x24 |
| 0x15 | 0x00 |
| 0x16 | 0x00 |
| 0x17 | 0x04 |
| 0x18 | 0x00 |
| 0x19 | 0x00 |
| 0x1a | 0x00 |
| 0x1b | 0x00 |
| 0x1c | 0x00 |
| 0x1d | 0x00 |
| 0x21 | 0x08 |
| 0x22 | 0x08 |
| 0x23 | 0x08 |
| 0x24 | 0x02 |
| 0x25 | 0x00 |
| 0x26 | 0x04 |
| 0x27 | 0x08 |
| 0x28 | 0x00 |
| 0x29 | 0x00 |
| 0x2a | 0x00 |
| 0x2b | 0x00 |
| 0x2c | 0x00 |
| 0x2d | 0x00 |
| 0x2e | 0x33 |
| 0x2f | 0x30 |
| 0x30 | 0x00 |
| 0x31 | 0x00 |
| 0x32 | 0x00 |
| 0x33 | 0x00 |
| 0x34 | 0x00 |
| 0x35 | 0x00 |
| 0x36 | 0x00 |
| 0x37 | 0x00 |
| 0x38 | 0x00 |
| 0x39 | 0x00 |
| 0x3a | 0x00 |
| 0x3b | 0x00 |
| 0x3c | 0x00 |
| 0x3d | 0x00 |
| 0x3e | 0x00 |
| 0x3f | 0x00 |
| 0x40 | 0xff |
| 0x50 | 0x00 |
| 0x60 | 0x00 |
| 0x62 | 0x00 |
Part Number:ADC11DS105
Hi dear expert,
i want to know the thermal resistance of ADC11DS105, however datasheet only list ThetaJA(to ambient), we will need ThetaJB(to board) and ThetaJc(to case) to do the thermal simulation. Can you please share the data with us?
Thanks very much for your support.
BR,
Joyce
Part Number:ADS1232
Our customer used ADS1232 in their pressure sensor since 2014. Recently, the design has been changed (circuit design of ADC have not changed too much, and the timing of data reading has not changed), but ADS1232 work intermittently now.
1.the circuit design of ADC before
2.the circuit design of ADC now
3.The waveform of 9,10 feet now(Oscilloscope 1CH is connected to CAP of ADS1232, 2CH suspended)
4.Timing of ADS1232(same as before)(Oscilloscope 1CH is connected to the SCLK of ADS1232, and 2CH is connected to the DOUT of ADS1232)
PS:
1. the VCC of ADS1232 is 4.85V
2.check the AC7 between 9,10 feet that capacitance is 110 nf
Part Number:ADS1118
Hi team,
customer use ADS1118 for thermocouple measurement and use temperature integrated in device for compensation of thermocouples.
here is a question is that does is measure ambient temperature or its self temperature?
if it measure itself temperature, it will have error because the device will heats. In customer project, when the start, the IC temperature is 28℃, after it work some minutes, the temperature will up to 34℃.
could you give some information about how to use temperature sensor to compensate the thermocouple accurately?
in the datasheet, it show that the sensor can be used for system-level temperature monitoring or cold-junction compensation for thermocouple. what's the system -level? and how to compensate without being influenced by itself?
thank you
Part Number:TIDA-01580
Okay, So i have gotten my mcu to send over uart, and am trying to decode the values coming from the ads1292R. I have a few questions, how long is the buffer coming from ads1292, per transaction, Second, which part of the buffer should i be looking for if i want to convert it back to a voltage?
Part Number:ADS1298
Hello,
I have been trying to connect the ADS1298 with an ODROID C1 through SPI. I have the 4 SPI channels and 2 signals for the Reset and the Start pins.
I have issues with the actual sending of the commands SDATAC and the read ID, also with sending the START but I can go arround by connecting it to one of the GPIO pins of the ODROID and driving it HIGH or LOW.
My code is bellow I hope you can help me.
I have verified steps 1, 2, 4, 5 and 6 in [FAQ] ADS129x: How do I verify that my ADS129x device is still functional?; and steps 1 and 2 in [FAQ] ADS129x: I'm having trouble communicating with my ADS129x device via SPI. What debug steps I should try?. AdditinallyI know the SPI communication is working since I verified that when the MOSI and MISO channels were connected together the messages were passing correctly.
Thank you very much for your time in advance and if there is any extra info you need ask me please,
Best,
Sofia
import os import time import RPi.GPIO as GPIO import wiringpi wiringpi.wiringPiSetupGpio() # For /sys/class/gpio with GPIO pin numbering START = 0x08 SDATAC = 0x11 RREG = 0x20 ID = 0x00 channel = 0 speed = 3906250 mode = 1 Fd = wiringpi.wiringPiSPISetupMode (channel, speed, mode) print Fd ### Reset pin High ### wiringpi.pinMode(100, 1) # Set pin 6 to 1 ( OUTPUT ) wiringpi.digitalWrite(100, 1) # Write 1 ( HIGH ) to pin 6 pin = wiringpi.digitalRead(100) # Read pin 6. print pin time.sleep(0.5) # secs --> tPOR > 2^18tCLK; internal fCLK = 2.048 MHz; tPOR = 0.128sec ### Reset pulse ### wiringpi.pinMode(100, 1) # Set pin 6 to 1 ( OUTPUT ) wiringpi.digitalWrite(100, 0) # Write 1 ( HIGH ) to pin 6 time.sleep(0.1) # secs --> sleep >2xtCLK; internal fCLK = 2.048 MHz; tRST = 0.0000009765625sec wiringpi.digitalWrite(100, 1) # Write 1 ( HIGH ) to pin 6 time.sleep(0.1) # secs --> sleet tRST - 18 tCLKs; 18 tCLKs = 000000087890625sec #########Setting SPI communications####### #### Registers can then be writen #### print "SDATAC Command" buf = bytes([SDATAC]) SDATACreturn = wiringpi.wiringPiSPIDataRW(channel, buf) print SDATACreturn time.sleep(0.5) print "START Command" wiringpi.pinMode(116, 1) # Set pin 6 to 1 ( OUTPUT ) wiringpi.digitalWrite(116, 1) # Write 1 ( HIGH ) to pin 6 time.sleep(0.1) # secs --> sleep >2xtCLK; internal fCLK = 2.048 MHz; tRST = 0.0000009765625sec buf = bytes([RREG, ID]) ID_return = wiringpi.wiringPiSPIDataRW(channel, buf) print ID_return
Part Number:AFE4300
Dear Colleague,
Now a medical customer wants to realize heart rate monitor function in body fat scale, I find AFE4300 is for weight scale, but I find it is not for heart rate monitor.
So do you have any suggestions on it?
Do we have any hero device or TIDA?
Thanks a lot!
Best Regards,
Rock Su
Part Number:ADS8674
Hey guys,
I am working with the ADS8678 EVM and appear to be having some issues with the communication. I have the board configured with default jumper settings and the GUI recognizes that the SDCC is connected. The problem is that I am unable to read registers from the ADC and am pretty sure there is no communication between the SDCC and ADC. When I probe SCLK, it looks like the clock frequency is actually running close to 25MHz, which is higher than the maximum 17MHz specified in the datasheet.
This was brought up before in this post: https://e2e.ti.com/support/data-converters/f/73/t/672309?tisearch=e2e-sitesearch&keymatch=ads8678 but the user seemed to have corrected his issues by using 50 Ohm termination resistors on the data lines. These appear to be present on the EVM, but I am still not able to read registers. Any ideas?
Part Number:DAC80508
Hello,
I have a customer that wants to use the DAC80508 with a load potentially as low as 66 Ohm. When the output is at full scale 2.5V, this could result in ~38mA.
I'm confused if this is within the capabilities of the part. The front page says 20mA, the EC table says short circuit current is 30mA on page 8, and this graph shows current capability up to 40mA.
Thank you!
Regards,
Ryan B.