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  • PGA2505: PGA2505 support an unbalanced microphone input

    TI Thinks Resolved
    Part Number: PGA2505 Tool/software: Dear Can the PGA2505 support an unbalanced microphone input (unbalanced input methods: PIN3->NC, PIN1->GND, PIN2->IN) Similar to this circuit, there are currently three phenomena: 1. Connecting this unbalanced…

  • RE: PGA2505: Why is the voltage here 0.6V? Shouldn't it be 0V? Is it because of bias voltage? But isn't the bias voltage of chip PGA2505 ± 0.08mV?

    Hello, The 6.8k resistors don't really limit the current in the fault condition where pins 2 or 3 get shorted to ground on the XLR. The capacitor is already charged up from the 48V and has to dissipate the current instantaneously. I created a simplified…
    • Answered

  • PGA2505: How long is OVR pin held high when a voltage above threshold is detected?

    Resolved
    Part Number: PGA2505 Tool/software: Hello, After an over-range event occurs, how long is the OVR pin held high? I am assuming that it is transient, i.e., only held high as long as the input voltage is greater than the set threshold and will have the response…
    • Resolved
    • Answered

  • PGA2505: Can I use a single-rail design +5/0V rather than dual rail +5/-5?

    Resolved
    Part Number: PGA2505 Tool/software: Hello, I'm looking at the power supply design for my board and considering whether the PGA2505 really needs a split rail or whether it can be run from a single +5 supply? Regards, Dan
    • Resolved

  • PGA2505: Alternative for PGA2505IDBR

    Part Number: PGA2505 Other Parts Discussed in Thread: PGA2500 , PGA2311 , Dears, Would like to check any alternative be suggested for PGA2505IDBR which the lead time is over 588 days. Thanks. Vito
    • Answered

  • PGA2505: PGA2505 with limit voltage input of DSP

    Resolved
    Part Number: PGA2505 Other Parts Discussed in Thread: OPA1637 Hello support team, The problem here is from our customer. They met some bottlenecks with PPGA2505 in products, and needs your comments: PGA2505 had max +-5V(VA+, VA- 5V power supply) output…
    • Resolved

  • PGA2505: Asking for PGA2505 SPI control

    Part Number: PGA2505 Hi Team, Customer uses PGA2505 on the new project. Would you please review and provide comment for the questions? 1. customer used PGA2505 and PGA2505 was controlled this chip via SPI bus; 2. PGA2505 will affect the system SPI bus…

  • TPSM84209: Impacting THD and frequency spikes

    TI Thinks Resolved
    Part Number: TPSM84209 Other Parts Discussed in Thread: PGA2505 , , LMZM23601 Tool/software: Hi, I have a customer who is using the TPSM84209 to power a PGA2505 However, they have seen radiated high frequency spikes which affect the THD of the amp. When…
    • Answered

  • PGA2505: Layout recommendation

    Resolved
    Part Number: PGA2505 Hello, We want to use the PGA2505 in a XLR/Phantom power application. Is it ok if we don't split the PGA2505 as seen on the EVM into AGND, DGND, 48V GND? Thank you and best regards, Ambroise
    • Resolved

  • PGA2505: question about passive component

    TI Thinks Resolved
    Part Number: PGA2505 hi team, my customer has some question about microphone preamplifier PGA2505. According to previous experience, there are two difference design that use PGA2505. 1. C234 C240 use ALUMINUM ELECTROLYTIC CAPACITORS it have polarity and…

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