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  • OPA1632: OPA1632-based differential filter for the audio output

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    Part Number: OPA1632 Hi! I'm designing a fully differential second-order filter for the audio CODEC output, based on OPA1632. I used this document as a reference: www.ti.com/.../slyt343.pdf I have no output at all. When probing with an oscilloscope…
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  • OPA1632: OPA1632: output impedance

    Resolved
    Part Number: OPA1632 Other Parts Discussed in Thread: PCM4222 Hello TI team, We plan to use the OPA1632 as an input buffer circuit for an ADC. The circuitry for this buffer will be according to figure 50 in the PCM4222 datasheet. The question is how can…
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  • OPA1632: OPA1632

    TI Thinks Resolved
    Part Number: OPA1632 Tool/software: Hi Tech Support, I am in the middle of bench testing this circuit using the OPA1632 chip. I am configuring it as a single ended analog input with a differential output. When I put a 3V test voltage on the input side…
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  • OPA1632: Question on Bypass caps

    Resolved
    Part Number: OPA1632 Hey team, Had a quick question on this part. The OPA1632 datasheet recommends the following for decoupling: “Bypass power supplies with 10-uF tantalum capacitors in parallel with 0.1-uF ceramic capacitors to avoid possible oscillations…
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  • OPA1632: Spec Needed For Vmax for Vocm

    Part Number: OPA1632 Hi all, I am looking at using the OPA1632 as a novel use for audio equipment. Usually, the design would call for a balanced input transformer, with a center tapped secondary. The secondary's outputs stay balanced to the rest of…
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  • OPA1632: Proper way to tie source and OPA1632 grounds?

    Resolved
    Part Number: OPA1632 Other Parts Discussed in Thread: TPA3251 , , TPA3251EVM , TPA3255 , TPA3250 , OPA1637 , OPA1633 Tool/software: Hi, I have a question regarding the correct way to tie the grounds of the source input and the OPA1632 front end as shown…
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  • OPA1632: Output clipping

    Part Number: OPA1632 Tool/software: Hi, I'm testing a simple test circuit with this chip. It is a differential amp. Input resistors are 5.6k and feedback resistors are 11.3k. Both inputs and outputs are isolated with capacitors, so no DC current…

  • PCM4204: Making PCM4204/OPA1632 for single ended mode

    TI Thinks Resolved
    Part Number: PCM4204 Other Parts Discussed in Thread: , OPA1632 Tool/software: Hi, I am implementing a circuit design that closely follows the analog front-end of the PCM4204EVM, including the op-amp and buffer stages. The only variations in my implementation…
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  • OPA1632: Powerpad on SOIC8?

    Resolved
    Part Number: OPA1632 Other Parts Discussed in Thread: OPA1633 , TPA3244 Tool/software: The datasheet unfortunately is not clear about this. Samacsys says that the SOIC8 version of the OPA1632 does not have a power pad. Is this correct? Thanks in advance…
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  • OPA1632: Output balance problem (single to dif conversion for AD inputs)

    Part Number: OPA1632 Other Parts Discussed in Thread: OPA1655 Tool/software: Hello ! I get different p-p amplitude from the outputs.(check the red remarks 1860 vs 2120mV) I have checked following: 1) checked and doublechecked all resistors - nope…

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