Forum Post: RE: TSW1200EVM with a ADS42B49EVM
Ok - based on your comments, I think we modified more than just the Data line skew...I've copied in the timing portion of the file for reference.Max sample Rate=250E6Data format=Offset BinaryOutput...
View ArticleForum Post: PCM1861 Pin Terminal Configuration
In the datasheet of the PCM1861 Analog-digital converter on page 4 the XI-pin is pin number 10 according figure 1 but pin number 14 according the table below the figure...What is the correct pin layout?
View ArticleForum Post: RE: Analog to optical conversion
We are looking to frequency of 10 to 500Hz. DC is not important. The application is an EMG.I think that we will purchase a PCM1807 or PCM3010 evaluation board to make the test.Thanks,Thierry
View ArticleForum Post: RE: Design of 12 bit analog output with 1A current source
Erfan,You should be able to use the general structure of this TI Precision Design to get something going:http://www.ti.com/tool/tipd138
View ArticleForum Post: RE: ADS1278 Vcom Buffer
Check out the VCOM OUTPUT section of the datasheet regarding drive capabilities.As previously mentioned, a buffer circuit that is not just a simple voltage follower may need to be employed if you are...
View ArticleForum Post: RE: Power down pins on ADS1278
Floating inputs are undefined, so to ensure their state, they should be pulled/tied high or low.
View ArticleForum Post: RE: AIC3254 = Marvell PXA320 I2S Interconnection...
Since we have also justified that the PXA320 actually sends a '0' for the 17th bit-slot - ie. the LSB - we have chosen to make the PXA320 the BCLK and WCLK Master, and to compensate the 17/16 bits...
View ArticleForum Post: RE: About an initialization setup of DAC5687.
Satoshi-san,some comments:0x00 = 0x30. The DAC is set up in HP/HP mode with x4L mode. Please make sure the input bandwidth and output bandwidth requirement in Table 9. Attached is the spreadsheet for...
View ArticleForum Post: RE: Problem with ADS1218
Hi Van Bor,Have you got ADS1218 working on TIVA processor, Can you please forward that code if possible as I am struggling to get SPI based ADS1218 working on TIVA processor using TIVA peripheral...
View ArticleForum Post: TLV320DAC3202 Package Ball Assignments
I think there is an error in the package drawing on page 19. It has the balls assigned A,B,C,D,E and 1,2,3,4. Comparing this assignment to table 3 (page 2) and they do not match.Note that table 3...
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Forum Post: RE: TLV2544 Reduced resolution at higher voltages
Here's a screen shot with a zoom into a read access. The voltage is nominally 2.5V. Notice there is some activity on the SPI where the ADC CS is not low. This is because the SPI is shared with a couple...
View ArticleForum Post: RE: ADC12D1800 + FPGA
Hello Rosanah,We offer the ADC12D1800RB which is an evaluation board with a Virtex-4 Xilinx FPGA included. It uses the WaveVision5 software to load the FPGA firmware image and communicate with the...
View ArticleForum Post: PCM1803A analog and digital ground connect and PCM1748 Connectivity
Hello. I have a question about the ground connection of the PCM1803A. Is normal that internally the analogic ground pin have continuity with the digital ground pin, measured without connect the...
View ArticleForum Post: Writing to ADS8201 registers
I'm having trouble writing to any registers on the ADS8201. When I try to read from the registers on the chip, I get the expected power-on default values. However, if I write to a register and then...
View ArticleForum Post: ADC128S102 reading problem when switching between channels
Just found the problem of this ADC. When switching between channels, if the voltage is quite different, it will cause the wrong result.for example, connect Ch4 to 1.6V, connect Ch7 to 3.3V, and...
View ArticleForum Post: PCM5102 decoupling capacitors
Dear Sirthe datasheet of PCM5102 suggests to use 2.2uF between [pin2:CAPP/pin4: CAPM]and 2.2uF also between [pin3:CPGND / pin5:VNEG]can I use 10uF for both instaed?thank you very much
View ArticleForum Post: LMP90100 ODR in multi-channel configuration
Dear all,I found the documentation of the LMP90100 chip really deficient regarding the description of how the ODR works in a multi-channel configuration. I would be grateful if somebody from TI could...
View ArticleForum Post: RE: LDC1000 source code?
Hi Murali,Thanks for the answer.I was using the older version before, and there is no firmware folder in it. I find the active code after re-installing the new version. Thanks again, and I will ask...
View ArticleForum Post: RE: PCM1803A analog and digital ground connect and PCM1748...
Hi,there may be a weak path between the two. In the application, the two ground potentials must be kept within 0.3V fo. Proper operation of the IC. It sounds like you have too much gain in your system,...
View ArticleForum Post: RE: TLV320DAC3202 Package Ball Assignments
Hi, Russell,Thanks for pointing out the error in the data sheet to us. I've asked my colleague to look into this for you. In the meanwhile, please check the evm users guide to see how that is...
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