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    Answered

  • MSP430G2755: How to filter noise input to analog input of MCU?

    Resolved
    Part Number: MSP430G2755 Other Parts Discussed in Thread: OPA344 Tool/software: Hi Experts, We'd like to ask assistance if there is any way to calculate what cut off frequency needed on this circuit: With scope shot: Without MCU (red graph…
    • Resolved

  • OPA1688: Single and Differential OPAMPs for MEMS MIC output

    TI Thinks Resolved
    Part Number: OPA1688 Other Parts Discussed in Thread: OPA1678 , OPA1637 , , OPA344 Tool/software: Hi Team, Customer is trying to design the OPAMPs circuit for MEMS MIC output, and they are looking for a lot of OPAMPs for this design. So please review…
    • Answered

  • OPA392: Measuring current noise of a current source?

    Resolved
    Part Number: OPA392 Other Parts Discussed in Thread: TINA-TI , OPA334 , OPA375 , OPA344 , OPA2375 , TLE2426 Tool/software: Hello, I built a current source using this circuit . According to the simulation, the current noise is about 3 uArms (" total…
    • Resolved
    • Answered

  • TLV320DAC3203: New item, Mono output

    Resolved
    Part Number: TLV320DAC3203 Other Parts Discussed in Thread: OPA344 Dear TI-san, I'm considering a circuit that uses a digital microphone for microphone input of a CTIA headset. 1 Are you selling new products since TLV320DAC3203? 2 TLV320DAC3203…
    • Resolved

  • Amplification of cardiac signal.

    TI Thinks Resolved
    Other Parts Discussed in Thread: TINA-TI , OPA344 , TL082 , TL072 , TSV911 , TL072H Greetings everyone! I am John Mark Ludovice, an Agricultural and Biosystems Engineering student from the Philippines, currently working on my undergraduate research…
    • Answered

  • How to do with offset in DC measurement circuit?

    Resolved
    Other Parts Discussed in Thread: TMS320F28335 , OPA344 Dear All, I am sampling a DC bipolar voltage ( -1.5 to 1.5 volt ) and passes through a OPA344 circuit to level up to 1.5 volt using a reference voltage ic. ( ADC of TMS320F28335. ) Please help…
    • Resolved
    • Answered

  • THS4531: ths4531

    Resolved
    Part Number: THS4531 Other Parts Discussed in Thread: OPA344 , OPA1637 , OPA1632 , THS4561 , Dear Sima-san, I appreciate your many advices. I reflected your advice (1-4) in schematic. Is your advice correctly reflected in schematic? If schematic…
    • Resolved

  • OPA313: HPF, Background noise

    Part Number: OPA313 Dear TI-san, I asked about OPA313 circuit at the following URL. https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1072728/opa344-opa344/3976360#3976360 And I made a board to which the following circuit…
    • Answered

  • RE: OPA345: self oscillating problem

    Resolved
    Hi Ras, the OPA345 is only stable for gains > 5! You could take the OPA344. Kai
    • Answered

  • RE: XTR117: Maximum loop load

    Resolved
    Hi Carlo, add a 10...100n cap between pin 7 and pin 4 of XTR117. Replace all components by fresh ones. If the circuit still doesn't work properly then, I would also remove the opto for a test and replace the opto transistor by a resistor in order…

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