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  • ADS127L21: Help to Understand ADS127L21

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    Part Number: ADS127L21 Hi, I would like to know how to use ADS127L21. Currently, I have a few question which I would like to get some understanding (all the discussed operation happened under 3-wire SPI Mode as described in Section 7.5.1.10 of ADS127L21…
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  • ADS127L21: ADS127L21: ADS127L21 START pin timing ambiguity: datasheet references START to CLK rising edge, but EVM DRDY behavior suggests falling-edge timing

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    Part Number: ADS127L21 I would like to direct this question to Bryan Lizon86 (profile: https://e2e.ti.com/members/4326131 ), who replied to my first locked thread. If the conversion latency is specified as the time between START high and DRDY high to…
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  • ADS127L21: ADS127L21: Use of Pin VCM

    TI Thinks Resolved
    Part Number: ADS127L21 When the VCM Buffer Output is disable, is the Driver Output Stage inactiv / High Impedance? - There are no notes to prove this one, based on the datasheet The idea is to drive the VCM output of the ADS127L21 with a external…

  • ADS127L21: Improving SPI read efficiency for ADS127L21 at 320 kSPS using synchronized clock from STM32F411

    TI Thinks Resolved
    Part Number: ADS127L21 Hello TI ADC team, I am using the ADS127L21 with an STM32F411CEU6. Current Configuration Data rate: 320 kSPS DRDY connected to MCU EXTI interrupt (highest priority) Every DRDY interrupt (~3.125 µs period),…

  • ADS127L21: ADS127L21 START pin timing ambiguity: datasheet references START to CLK rising edge, but EVM DRDY behavior suggests falling-edge timing

    Part Number: ADS127L21 I would like clarification regarding the timing specification of the START input on the ADS127L21. In the datasheet, START timing is specified with respect to the rising edge of CLK . However, when observing the ADS127L21 EVM…

  • ADS127L21: High Noise and Small Voltage Range Issue with ADS127L21

    Part Number: ADS127L21 Other Parts Discussed in Thread: TPS65135 , REF6025 Hello TI Team, Our team is planning to combine a high-frequency ADC with a high-frequency current transformer to achieve synchronized acquisition of high-frequency AC current…

  • ADS127L21: do you provide IBIS model for ADS127L21? START pin Cin?

    TI Thinks Resolved
    Part Number: ADS127L21 Is IBIS model available for ADS127L21? Link used in one thread ( www.ti.com/.../sbam498) does not find the pointed file or web page. I'm particurly interested in Cin (input capacitance) of START pin, there is no information in the…

  • ADS127L21: Unexplainable SDO With Constant Input (Negative Voltage)

    Part Number: ADS127L21 Other Parts Discussed in Thread: ISO7741 I have a system which using ADS127L21. The basic description of how I use ADS127L21 is as below: 1. The ADC CLK pin is connected to external clock source provided by FPGA at 10MHz. The…

  • ADS127L21EVM-PDK: ADS127L21 EVM SNR & THD Test?

    TI Thinks Resolved
    Part Number: ADS127L21EVM-PDK Other Parts Discussed in Thread: ADS127L21 , PSIEVM Hola How to setup ADS127L21 EVM to test SNR & THD as figure-6 in the user-guide to verify ADS127L21 performance?
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  • ADS127L21: ADS127L21/ADS127L18 Voltage Reference Recommendations

    Resolved
    Part Number: ADS127L21 Other Parts Discussed in Thread: ADS127L18 , , THS4551 Tool/software: Hi, My customer is looking to specifically prioritize THD and DR using this device. They noted that according to the ADS127L1X data sheet, page 11, the…
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