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  • ADS8556: ADS8556 BUSY/INT PIN interferes with analog INPUT PIN

    TI Thinks Resolved
    Part Number: ADS8556 Other Parts Discussed in Thread: SN74LVC16T245 , ADS8555 , ADS8555EVM-PDK , ADS9815 , ADS9811 I disconnected the peripheral circuits of the six analog input pins of the ADS8556, but measured interference noise with a 75% duty cycle…

  • ADS8556: Hardware Mode, Parallel Interface, Feels like shift in values

    TI Thinks Resolved
    Part Number: ADS8556 Tool/software: I am using ads8556 and reading 6 channels in parallel mode. >Timer starts the conversion with convst_A_B_C rising edge >Wait for busy falling edge >RD is toggled using a timer >Data is copied from another pin being…

  • ADS8556: ADS8556 Capacitor Values with DC BIAS - AVCC and REFC_x pins

    TI Thinks Resolved
    Part Number: ADS8556 Tool/software: In the design notes AVCC capacitor selection can be 0.1uF or 1uF (better noise immunity) each pin and one 10uF. The 10uF can be eliminated with use of 1uF caps on each pin. Currently, AVCC in the design is 5V and…
    • Answered

  • ADS8556: ADS8556 Capacitor Values with DC BIAS on REFC_x

    Resolved
    Part Number: ADS8556 Hello, I am inquiring on the change in capacitance on REFC_x (A,B,C) with a 10uF X7R 10V capacitor in 0603 package. With a 3.3V DC BIAS, the capacitance drops to 6.1uF. Is it acceptable to use this part with this change in capacitance…
    • Resolved
    • Answered

  • ADS8556: Hardware Mode, Parallel Interface, Irregular conversion values

    Resolved
    Part Number: ADS8556 Tool/software: So i am converting six channels. Rising edge Convst for A B C. Waiting for BUSY falling interrupt Setting CS Low Setting RD Low and reading CH1 Setting RD high and then low and reading CH2 and so on. Internal Ref…
    • Resolved

  • ADS8556: When BVDD(+3.3V) is turned on, why does AVDD（+5V) rise even though it is turned off?

    TI Thinks Resolved
    Part Number: ADS8556 Tool/software: Dear Specialists, My customer is evaluating ADS8556 and has a question. I would be grateful if you could advise. --- The board I'm currently evaluating uses an ADS8556IPM. I measured the startup waveform of…

  • ADS8556: what's the diff between the ADS8556,ADS8555

    TI Thinks Resolved
    Part Number: ADS8556 Other Parts Discussed in Thread: ADS8555 HI Sir The ADS8556 will freeze in random during the ADC reading but ADS8555 No any issue in the same circuit, may I know the diff inter? thans

  • ADS8556: Do you have any reference layout example of AGND and BGND for multi ADS8556 usage?

    TI Thinks Resolved
    Part Number: ADS8556 Hello guys, One of my customers is going to use 10pcs of ADS8556 per their own board. At this moment, they have the following question for PCB layout design. Could you please give me your reply? Q. ADS8556 datasheet has layout…
    • Answered

  • ADS8556: unused analog pin

    Resolved
    Part Number: ADS8556 Hi team, Is it OK to left open the analog unused pin? (e.g. CH_A0) Regards Ohashi
    • Resolved

  • ADS8556: ADS8556 for pspice

    TI Thinks Resolved
    Part Number: ADS8556 Hi team, I help my customer to ask a question. “ I want to emulate ADS8556 in pspice but I don t know how to use these models. Directly output without an power supply? What is difference for DIN_5 and DIN_3? What means…

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