Forum Post: RE: ADS1299: DRDY Always Pulled High and DOUT does not respond to...
Quickly running out of ideas here... what is CLKSEL tied to? What are the logic states of your GPIO's?
View ArticleForum Post: RE: problem with reading data from ADS7825
Hi B M S, Can you provide a schematic showing the analog front end to the ADS7825 ?
View ArticleForum Post: RE: AFE5809: AFE5809
Hi Bob, How are you? Thank you for using AFE5809 device. Yes, I will ask our team and reply to you very soon. Thank you very much! Best regards, Chen
View ArticleForum Post: RE: DAC8775: DAC8775 Internal power supply design
Hi Lei, LP_X, LN_X, VPOS_IN_X, and VNEG_IN_X of unused channels should be left unconnected. Thanks, Garrett
View ArticleForum Post: RE: LMP90098: Variations in RTD data
Hi Sumangala, Thanks for your post! Can you provide a schematic that shows your circuit? Are the huge variations on the range of uV, mV, or V? Are you using background or system calibration? Which...
View ArticleForum Post: RE: ADS1299: DRDY Always Pulled High and DOUT does not respond to...
Mode CPOL CPHA 0 0 0 1 0 1 2 1 0 3 1 1 Don't you mean mode 1?
View ArticleForum Post: RE: ADS8920B: Replacing a Microchip MCP3550 ADC with an ADS8920B
Hi Ian, The ADS8920B can be used with as little as 3-wires. Figure 88 in the datasheet shows the minimum-pin interface. The CONVST pin is tied to /CS, /RST is pulled high, and if you do not have a 4th...
View ArticleForum Post: RE: AFE5809: AFE5809
Hi Bob, Thanks for using AFE5809 device. All the information you requested as linked at: Please check this www.ti.com/.../TIDA-00419 Thank you very much! Best regards, Chen
View ArticleForum Post: RE: AFE5809: AFE5809
Hello Chen, thank you for the quick feedback. I am on the link but do not see Altium design files. Do they exist? Thanks, Bob
View ArticleForum Post: RE: ADS8920B: Replacing a Microchip MCP3550 ADC with an ADS8920B
Hi Keith, Thank you for the timely response. Looking at figure 88, it looks like /RST is tied to DVDD (5 V) through a resistor. What resistance would you recommend if one is needed? Also for a 3 pin...
View ArticleForum Post: ADS1282EVM-PDK: ADS1282
Part Number: ADS1282EVM-PDK On the ADS1282EVM-PDK Printed Circuit Assembly looking to understand what U14 EEPROM function is? The schematic states that the address pins are all shorted to ground. If...
View ArticleForum Post: RE: ADS1282EVM-PDK: ADS1282
Hi Dean, The EEPROM on the ADS1282EVM is for board identification within our software interface. You need to review the datasheet for both the PCA9535 and the MCP-24AA256 to see that the control codes...
View ArticleForum Post: RE: ADS1298: Question about 0.05Hz high-pass filter for ADS1298
Hi William, Thank you for your post and welcome to our forum! The non-linear response should not affect the ECG signal at those low frequencies. It would be more of a concern if this non-linearity...
View ArticleForum Post: RE: ADS1282EVM-PDK: ADS1282
Hi Dean, I did a quick check and here are the addresses that I see for each of these devices... IO Expander 0100 | A2 | A1 | A0 (A[2:0] are tied to ground) EEPROM 1010 | A2 | A1 | A0 (A[2:0] are...
View ArticleForum Post: RE: RTOS/ADS1118: Best practices for using Tiva C TM4C1294 QSSI...
Kenneth, The sequence doesn't change much except that for the start of a new conversions, you write a new configuration to select the input channel. Assuming that AIN0/AIN1 is CH1 and AIN2/AIN3 is CH2,...
View ArticleForum Post: RE: ADS8881: Specs for Sub-sampling
Hello, TI does not typically characterize the SAR based converters for under sampling; at these lower input frequencies most customers prefer to use the high speed pipeline converters. The input...
View ArticleForum Post: RE: ADS1299: DRDY Always Pulled High and DOUT does not respond to...
Hey Tom, CLKSEL is just tied high for now from the GPIO from the NRF with the plan to tie it directly to 3.3V in the future. The NRF outputs are attached below from the spec sheet, but I am observing...
View ArticleForum Post: TLV5638: Part Markings
Part Number: TLV5638 My company purchased V62/03628-02XE. All parts are correctly marked with "5638ME" as per the datasheets. Under that is "52T". Some parts have "E60N" or "A4YR" on the bottom line....
View ArticleForum Post: RE: ADS1299: DRDY Always Pulled High and DOUT does not respond to...
Hey David, Yes you are correct, it should be mode 1. I have made that change, but don't see any difference in the DRDY pin as of yet.
View ArticleForum Post: RE: AFE5809: AFE5809
Hi Bob, After looking into that TI website, then please see the following the link below: ============= Design files (6) and then click on: TIDA-00419 CAD Files ( AFE5809EVM ) ============= Then you...
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