Hello Jamie,
I am still waiting for updates regarding die differences between the -SP and commercial versions of ADS1278. I can confirm there have been no significant die changes since 2014 for the commercial version nor any changes to the -SP version…
Part Number: ADS1278-SP Other Parts Discussed in Thread: ADCPRO Although the test eval board has non-rad hard components, we plan to shield all the components except the device under test (ADS1278-SP) with Pb brick.
This Pb shielding will prevent radiation…
Part Number: ADS1278 Other Parts Discussed in Thread: ADCPRO , I am using the ADS1x7xEVM-PDK EVM board + ADCPro and when the unit is set to MULTISCOPE Mode with 2.5V (Vref), High Resolution I get an offset in the resulting data collected at 128Ksps of around…
Hello Lucy,
The ADS1261 has a single ADC with an integrated multiplexer. As soon as you scan through channels, the effective update rate per channel will be reduced.
In addition, changing channels requires additional time for the internal digital filter…
Part Number: ADS1278 Other Parts Discussed in Thread: THP210 , THS4521 In the ADS1278 datasheet, figures 89 and 90 show recommended FDA circuits for driving channels of the ADC. Why is the recommendation to put the 49.9-ohm resistors before the feedback…
Part Number: ADS1278 Other Parts Discussed in Thread: ADS125H02 , ADS8694 Dears:
customer's requirement is 1- Resolution 24bit
2-input signal is 1KHz, +/-5V
3-4 channel
4-SPI
I can't find such ADC in ti.com, Please help recommend a suit one , Thanks…
Hello Aravind,
The data rate depends on the Mode Pin configuration (pins 33, 34) and the CLKDIV setting (pin 10), as well as the clock frequency. This relationship is shown in Table 8.
As an example, if you need 65ksps, then you will want to configure…
Part Number: ADS1278 Dear TI,
I am looking for space qualified multi-channel ADC. I need to sample very low bandwidth signals (carrier waves) with carrier frequencies of ~10 MHz.
I am wondering whether ADS1278 (which has maximum sampling rate of 144 kHz…
Hello Roman,
Use the /PWDN pins to power down the channels; this will shut down the sampling on these channels, reducing both the average and dynamic current load on the VCOM buffer. Looking at your schematic, I suggest taking measurements on channel…