Forum Post: RE: ADS124S06: ADS124S06 Read Data Direct setting
Hi Masa-san, There is no register setting for the Read Data Direct mode as this is always enabled. This allows for a WREG command to be issued to change the mux setting the same time the conversion...
View ArticleForum Post: RE: DDC232: Problems with input offset: -4096
Hi Kaspar, Thank you! Please continue to contact with us! Best regards, Chen
View ArticleForum Post: ADC128S102: SCLK and CS_n timing parameters
Part Number: ADC128S102 I would like clarification on the tCSS and tCSH setup and hold constraints for the CS_n Chip Select signal and the SCLK clock. The Timing Specifications table and the Figure 3...
View ArticleForum Post: RE: DAC38RF82: gain factor vs. register setting
Hans, The GAINAB register ranges from 0x00 to 0x8000. The default reset setting of this register is 0x4000 which equals a gain of 1. Max gain is 2 when this value is set to 0x8000. Each LSB of this...
View ArticleForum Post: RE: ADS122U04: ADS122U04
Hi Joachim/Bob, So I have come back to this and selected a couple of 10K NTC thermistors that will work well for us. My question before I submit my schematic to others for review is whether there is...
View ArticleForum Post: RE: ADS1282EVM-PDK: Testing EVM without input amplifier
Hi Shashank, To avoid contention between your input signal and the OPA1632 , I would recommend removing the R6, R7, R18, and R19 resistors. Alternatively, you could try removing OPA1632 (U4), R6, R7,...
View ArticleForum Post: ADS1220: ADS1220
Part Number: ADS1220 Hello I am currently using a simple P-N enabled Load switch to power on an OpAmp and measure a Battery voltage. Problem is that this circuit takes 2 GPIO: 1 to enable the P-N FET...
View ArticleForum Post: RE: ADS8354: Termination of negative input when using...
Hello Albin, The ADS8354 requires a fully differential configuration. You cannot connect either input to ground and meet the datasheet specifications. The Vcm specification in the datasheet only allows...
View ArticleForum Post: ADS1294: IEC60601-1, IEC60601-2-27 and IEC60601-2-51 compliance?
Part Number: ADS1294 I have a customer currently using ADS1294 in a product undergoing 60601-1 certification. The certifier is concerned about about the damage/degredation of performance the chip could...
View ArticleForum Post: RE: ADS8354: Termination of negative input when using...
Hello Albin, I also want to point out that we do have a single-ended input version of this ADC; ADS8353 . Since you want single-ended inputs, this device may be easier to use in your design. Figure 101...
View ArticleForum Post: RE: ADS1220: ADS1220
Hi Frank, Measuring the REF0 inputs of the ADS1220 may be a technically possible, but the accuracy of the measurement will not be the same as with the analog inputs. The voltage divider may not be...
View ArticleForum Post: RE: ADS131A04EVM: Startup procedure
Michael, I had a chance to ask one of the digital engineers about this device, and there were a couple of things that I didn't catch in the datasheet. I'll go through your file, and explain what I see....
View ArticleForum Post: RE: ADS122U04: ADS122U04
Hi Frank, it doesn't really matter if the NTC is on the high or low side. It also doesn't matter if you measure the voltage with the ADC across the NTC or RREF. It's all just a resistor divider. Please...
View ArticleForum Post: RE: ADS131A02: DRDY data line not behaving as expected
Eddie, Sorry I didn't get back to you earlier. It took me a bit to get something together. I was able to get an ADS131A04EVM to look at the device response (it should be the same as the ADS131A02 ). I...
View ArticleForum Post: RE: DAC38J84: FIFO Errors
This is the waveform of the SYNCB signals from each DAC (0 to 3 starting from the top) after issuing a sysref request. DACs 3 and 4 seem perfectly fine, deasserting SYNC about 40 cycles after sysref....
View ArticleForum Post: RE: ADS1294R: Bits Flickering in Lead Off registers
Are you using the current souce or pullup/pulldown resistor method? We are using Current Source method for Lead off Detection. What current magnitude are you using? Initially 6 nA. Now Changed to 24 nA...
View ArticleForum Post: RE: DAC38J84: FIFO Errors
Hi, What are the results if you use continuous SYSREF instead of single shot SYSREF? If all 4 DACs work with continuous SYSREF then you can adjust the timing between SYSREF and device clock at the...
View ArticleForum Post: RE: DAC37J84: Signal upconversion
Hi Art, You can use the DACs mixer to up-convert your baseband signal without an external modulator. The available modes and interpolations are given in table 11 of datasheet. Note: - DAC Sample rate =...
View ArticleForum Post: RE: problem with reading data from ADS7825
hi Dale thanks for suggestion. i found that the problem with my supply source of INA, it is fluctuating and i changed with new supply source and removed LPF infront of the ADC's Channel. Now i am...
View ArticleForum Post: RE: ADS1218: Query regarding the External clock
Hi Bob, Thanks for the response! The higher amplitude in DOUT signal got fixed after adjusting the external clock to 0V to 5V. We have one more query! Whenever the last bit of DOUT is high, the signal...
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