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  • ADS1263: Refout with an OPA337 charger amplifier

    Resolved
    Part Number: ADS1263 Other Parts Discussed in Thread: OPA337 Hi I intend to supply the ADS1263 using 5V. Also, the sensor to be read will be used with an charger amplifier (OPA337), with T-network configuration (as in the image below) and also supplied…
    • Resolved

  • OPA337: What is a proper op-amplifier for piezoelectric sensor?

    TI Thinks Resolved
    Part Number: OPA337 I am setting up an amplifier for a piezoelectric acoustic sensor (frequency response 50Hz to 20kHz). The sensor has very high output impedance. High input impedance and low noise is required for the op-amp. I have several questions…
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  • OPA337: Doubt in application note "Signal conditioning for piezoelectric sensors"

    Resolved
    Part Number: OPA337 On page no. 27 of application note "Signal conditioning for piezoelectric sensors" in first bullet point on left hand side of figure 6, I want to know how the value of 5.85 in the denominator have been calculated.
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  • ADS1299: Piezoelectric sensor aquisition

    TI Thinks Resolved
    Part Number: ADS1299 Other Parts Discussed in Thread: ADS1263 , TLV2771 , TLV6742 , OPA337 , OPA2625 Hello! I am working on an application using a piezoelectric sensor (disk). I have tried to use ADS1299 and ADS1263 to acquire the signal from the sensor and…

  • OPA337 PSpice model fails to converge

    I'm running ORCAD v16.3. I set the simulation up in accordance to the following recommendation from the model, itself: * ADD .OPTIONS ITL=40 AND .OPTIONS GMIN=10p TO NET LIST IF SIMULATION DOES NOT * CONVERGE I get the following statements in the output…

  • RE: TLV2711: Circuit to interface with piezo disc sensors

    Hi Daniel, Thank you for your support. In fact, your point about high voltage is right and we do need a charge amplifier for our application. We need charge amplifiers that can convert charges from range 450 pico Columbs to 10 micro Columbs to voltage…
    • Answered

  • PCM1681: Problem about the active filter.

    Resolved
    Part Number: PCM1681 Other Parts Discussed in Thread: OPA2353 , OPA337 , OPA2134 , OPA1622 I have several questions about PCM1681. Please refer to the datasheet, figure 26 and figure 33 show the recommended active filter circuits, my question is: (1): can…
    • Resolved
    • Answered

  • RE: TLV2772: Why does my summing amplifier not work?

    Resolved
    Hi Kai, Thanks a lot for your quick reply. The supply voltage is 5V. The input signal amplitude is around 5mV. The input signals are AC coupled. I also tried OPA337. But it did not work. Best, Hai

  • PCM1606 with single supply AC noise issue

    TI Thinks Resolved
    Other Parts Discussed in Thread: OPA337 Hello, I'm using PCM1606 with single supply. But i got huge AC noise with reference circuit as below. We confirm the noise come from PCM1606 and LPF. We're still working to solve the noise, but it seems that…

  • Charge amplifier with low impedance input

    Other Parts Discussed in Thread: OPA337 , OPA191 , TINA-TI , OPA140 Hello, I am looking for help designing a charge amplifier that has very low input impedance. My basic circuit design looks like this: Here, R1 is a many-turn coil (200-100 turns, depending…

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