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  • PCM1821: PCM1821 How to I2S 0dBFS output?

    Part Number: PCM1821 Hi TI Teams We are using the PCM1821 to do ADC design, when inputting 2Vrsm signal or inputting 3Vrms signal, the I2S signal output from the ADC can't go to 0dBFS, how can we make the PCM1821 I2S output go to 0dBFS? The hardware…
    • Answered

  • PCM1821: audio input level check & confirm

    Resolved
    Part Number: PCM1821 Other Parts Discussed in Thread: PCM1822 Tool/software: Hi Sir, We have a new opportunity to develop headphones for airline use, which will include an ADC chipset for audio analog input. However, I am unsure about…
    • Resolved

  • PCM1821: PCM1821

    TI Thinks Resolved
    Part Number: PCM1821 Dear sir Please inform me the electrical parameters of DC-blocking capacitor for analog input 。 Thanks a lot！

  • PCM1821: ADC Selection

    TI Thinks Resolved
    Part Number: PCM1821 Other Parts Discussed in Thread: TLV320ADC3120 I need help choosing an ADC for my device. It is a electronic stethoscope for heart and lung auscultation. From literature review, heart sounds are between 100-200 Hz and lung sounds around…

  • PCM1821: ADC input blocking capacitor size

    Part Number: PCM1821 With the design of PCM1821 We use single end signal input, the blocking capacitor can I use different capacitance values between IN1P and IN1N?

  • PCM1821: Single-ended (line) audio on differential inputs

    Part Number: PCM1821 Other Parts Discussed in Thread: PCM1822 Hi, I have a design in which I've routed two single-ended audio lines into the INxP channels of the differential inputs on a PCM1821:s. The reason for this design is that I want to convert…

  • PCM1821: spec check

    TI Thinks Resolved
    Part Number: PCM1821 Hi AHD Camera video accesses DV660 MB via VX1. As described in the block diagram below. The DV607 and DV660 in blue boxes are projects that we have mass-produced. The customer plans to connect the AHD Camera's Audio to the DV660 …

  • PCM1821: Analog versus Digital GND

    TI Thinks Resolved
    Part Number: PCM1821 Other Parts Discussed in Thread: PCM1822-Q1 We need to make sure our PCM1821 (or PCM1822-Q1) board is as quiet as possible, but the system we're connecting to is fairly noisy. Thus we want to isolate our analog signals, power…
    • Answered

  • PCM1821: PCM1821 Input gain scaling factor for Mic and Line input not clear through datasheet

    Resolved
    Part Number: PCM1821 Other Parts Discussed in Thread: PCM1861 , PCM1822 , PCM1820 , PCM1860 Hello, I want to use PCM1821 (no dynamic gain enhancer feature) as a SLAVE in my designs sometimes as ADC with line input and sometimes as ADC with analog Mic input…
    • Resolved
    • Answered

  • PCM1821: Connection Recommendation for Unused Analog Inputs

    Resolved
    Part Number: PCM1821 Other Parts Discussed in Thread: PCM1822-Q1 , PCM1820 , PCM1820-Q1 If only one channel of the PCM1821 analog input pair is needed, what is the recommended connection for the other pair? Does this same recommendation apply to PCM1820…
    • Resolved

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