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  • AFE7952: FREQ-DDC-FILTER-CALC tool for under-sampling ADC

    Resolved
    Part Number: AFE7952 Hi, I find out a good tool in TI; https://www.ti.com/tool/FREQ-DDC-FILTER-CALC I set Fs=2900MHz, Interleave=1, Fc=2050MHz, BW=1MHz. I get: Rx band=850MHz, HD2=1200MHz, HD3=350MHz, HD4=500MHz, HD5=1350MHz "slyt738.pdf" The TI doc. show…
    • Resolved

  • PCM1804: ADC produces large 3rd harmonic in the conversion process

    Part Number: PCM1804 Hi team, When using PCM1804, one of our customers found that the third harmonic generated by ADC in the conversion process is large, which affects the distortion. See the figure for details. The input signal is a single frequency…
    • Answered

  • TMS320F28335: How to perform harmonic content analysis on an array of sinusoidal waveforms handled by ADC DMA

    Resolved
    Part Number: TMS320F28335 Hi team, Here's an issue from the customer may need your help: How to perform harmonic content analysis on an array of sinusoidal waveforms handled by the ADC DMA? TI's FFT library has only the amplitude, phase, frequency…
    • Resolved

  • RE: ADS5560: Data converters forum

    Hi Sefa, On the EVM schematic there is no 1.5V IC for the ADC common mode or the amplifier common mode because in that configuration the VCM for the ADC is generated internally and then the VCM pin of the ADC is outputting 1.5V that is then used as the…

  • TMS320F28075: ADC sampling result has 2nd harmonic while ADC analog input hasn't

    TI Thinks Resolved
    Part Number: TMS320F28075 Other Parts Discussed in Thread: C2000WARE Hi My customer use TMS320F28075 ADC to sample three-phase electric power. As you see, the green wave is voltage input to ADC. Fundamental is 50Hz, almost hasn't 100Hz harmonic. The…

  • RE: ADS1015-Q1: parasitic component values

    Hello, xi lin said: I am trying to fill in the ADC input impedance equivalency diagram above for the ADS1015. Can you please advise what is C_S (min and max and typ) and C_p1 and C_p2? The ADS1015-Q1 is a delta-sigma ADC so generally it will appear resistive…

  • ADS131M04: Varying clock frequency

    TI Thinks Resolved
    Part Number: ADS131M04 Hello We are using the ADS131M04 to measure mains voltage (rms magnitude, phase and harmonic components via FFT). We want to make sure there are 256 samples per cycle (coherent sampling to minimise measurement inaccuracy). This…

  • RE: ADS7883: Spice model

    Hi Amrithapriya, Welcome to our e2e forum! You can use the SAR ADC Drive calculator tool found in the Analog Engineers Calculator as a substitute, that tool is here: https://www.ti.com/tool/ANALOG-ENGINEER-CALC Our TINA-TI or P-Spice for TI really only…
    • Answered

  • ADS4128: Looking for a 10MHz very low harmonic sine source to check AFE +ADC performance

    Resolved
    Part Number: ADS4128 Other Parts Discussed in Thread: THS4541 , THS4509 , TSW2170EVM , TSW2110EVM Hello, I have an application with an ADS4128 driven by an AFE using THS4541 and THS4509 op amps. I want to be able to reproduce the setup used in figure 8 of…
    • Resolved
    • Answered

  • RE: ADC12SJ1600-Q1: Performance in single-ended configuration

    Resolved
    Hi Danilo, Here is performance of ADC at 1G sampling and 100MHz input with single ended input. As you can see the SFDR and Harmonics related performance is degraded because of using the ADC with single ended input. Regards, Neeraj

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