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  • OPA2134: packaging type

    Part Number: OPA2134
    Other Parts Discussed in Thread: TL082

    Hi,

    what is the difference between OPA2134PA and the PAG4 model and are the 2 models interchangeable?

    I'm looking for a substitute for TL082, used in a active crossover in a vintage audio device…

  • OPA2134: Counterfeits?

    Part Number: OPA2134

    I obtained some OPA2134PA DIP op-amps from a friend to test. For my test circuit I am using:

    +/- 13.5 volt supply, 100 nF and other bypass caps

    Signal input 4.5 Vpp sinewave, 65 KHz, centered at 0V

    Gain about 4 (RG/RF)

    I have parts…

  • OPA2134: Need to check the Selective Inventory Exchange Process -SIEP - MPN : OPA2134 - PACKAGE - SOIC

    Part Number: OPA2134

    Hi Experts , 

    Referring to the TI SIEP notification SOIC package need to be returned due to some process changes . 

    We have a stock of MPN : OPA2314UA/2K5 of DC 2240. Refer to below label where we need to understand whether these…

  • OPA2134: Drop-in replacement

    Part Number: OPA2134
    Other Parts Discussed in Thread: OPA1656

    Hi team,

    Is it possible to drop-in replace OPA2134UA/2K5 with OPA1656IDR?

    Best regards, Antoine

  • OPA2134: Part notch clarification

    Part Number: OPA2134

    Hello TI Support Team,

    Mouser Electronics received a request from a customer with two parts. As noted on attached images, one part received has one notch and the other has two notches.

    Can you explain why one notch is present and the…

  • DAC8568: Reset everything, enable internal reference and give it a go?

    Part Number: DAC8568
    Other Parts Discussed in Thread: OPA2134

    Hi @ all!

    I'm having ridiculous problems getting a DAC8568 (D Grade) to work at all. It DID work somehow, then I seem to have fumbled the commands, now it's completely all over the place.…

  • PCM1690: Design review for DAC Output LPF and Differential to Single End Buffer

    Part Number: PCM1690

    Dear TI Engineer,

    We are using PCM1690 and applicate the DAC output LPF and differential to single end buffer from the datasheet page 35 (as below).

    Taking the above as reference,  and considering the OPAMP in our project circuit…

  • OPA2134: OPA2234UA

    Part Number: OPA2134

    Anyone had experience on this part marking? what's the " 1" "2" or "A" on the first line stand for?

    Does the "A" is for suffix UA for the part number?

    thank you!

  • LM4808: PCB layout for headphone amp

    Part Number: LM4808
    Other Parts Discussed in Thread: OPA2134, LM386

    Hi,

    I am designing a headphone amp with a tone control circuit, with LM4808 being amp and an OPA2134 forming the tone control part. Based on layout example in LM4808, the grounds of the…

  • PCM1798: Opamp specification detail using for I-V convert circuit connected after DAC analog audio output

    Part Number: PCM1798
    Other Parts Discussed in Thread: NE5534, , OPA2134, OPA604, OPA134

    In the PCM1798's datasheet, NE5534 is recommended for I-V convert circuit connected to PCM1798 analog output.

    But NE5534 is too high for us.

    So could you tell me…

  • OPA2132: thermal resistance confirmation

    Part Number: OPA2132
    Other Parts Discussed in Thread: OPA2134

    Hi Team,

    Our customer noticed the thermal resistance of 150 deg C/W for the OPA2132 op-amp from this forum post is quite high compared to the derived thermal resistance for the OPA2134 (from…

  • OPA2134: OPA2134 VS OPA1656

    Part Number: OPA2134
    Other Parts Discussed in Thread: OPA1656, OPA134

    Hi Team,

    My customer wants to replace OPA1656 with OPA2134. Which one has better electrical characteristics? will replacement of the chip affect the sound?Any  things should take into…

  • NE5532: Alternative scheme

    Part Number: NE5532
    Other Parts Discussed in Thread: OPA2134

    Our customers used ne5532 model and sop8 package before. Now they can't purchase it. Please which model can be used to replace it directly? The product is audio power amplifier.

  • TPS65133: NEG 5v stuck at 0.6V

    Part Number: TPS65133
    Other Parts Discussed in Thread: OPA4134, OPA2134,

    Hi,

    We have used the TPS 65133 in our design which providessplit rail power to 3x OPA4134 opamps and 1x OPA2134 audio amplifiers.

    The TPS 65133 is capable of powering 3 of the 4 opamps…

  • LM4562: Zo SPICE Test of Op Amp Macromodels

    Part Number: LM4562
    Other Parts Discussed in Thread: OPA2134

    Dear Amplifiers team

    I have a old project of ultra low distortion oscillator, in this project, designer used several operational amplifiers of other competitor (Analog Devices).

    My idea is to…

  • OPA1692: About the behavior when the output is saturated

    Part Number: OPA1692
    Other Parts Discussed in Thread: OPA2134, OPA2197, OPA1642

    I use OPA1692 to connect multiple audio amplifier circuits with different gains in parallel. That is to accommodate all input levels. The input sides of multiple amplifier…

  • OPA2314: OPA2314AIDGKR

    Part Number: OPA2314

    Hi experts,

    These were from Arrow.

    During our inspection, we decapped a piece of OPA2314AIDGKR with DC:1915. The die did not show any markings that relates to a OPA2314 series.

    Please check if this is a valid die.

    https://e2e.ti…

  • OPA2134: OPA2134AIDGKR

    Part Number: OPA2134
    Other Parts Discussed in Thread: OPA2314

    Hi experts,

    These were from Arrow.

    During our inspection, we decapped a piece of OPA2134AIDGKR with DC:1915. The die did not show any markings that relates to a OPA2134 series.

    Please check…

  • RE: OPA1632: +/-5v power for 6Vpp AC signal

    Hi, thanks for your reply Hasan,

    I am using CS5368

    40 kHz bandwidth unweighted 108db  ( measured from 10hz to 20khz  )

    Input Impedance (Differential)  250k

    Full-scale Input Voltage @ maximum 1.24*VA Vpp = 6.2V

    Dynamic Range A-weighted 114db

    I'm not sure what…

  • RE: Status of the OPA2604AU/2K5, PCN available?

    Hi Christian,

    Please let me know if there is a kind of official report like a PCN from Texas Instruments is available or downloadable?

    I am unable to find PCN in OPA2604, and it is likely occurred prior to 2019, maybe as early as 2017/2018 based on the…

  • [FAQ] OPA1656: Next generation OPA2134 and OPA2604 replacement

    Part Number: OPA1656
    Other Parts Discussed in Thread: OPA2134, OPA2604

    The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. It offers exceptional performance in almost any audio application. The low voltage noise combined…

  • OPA1652: Need to replace RC4136 in active audio filter with lower noise part. Is OPA1652 a good choice?

    Part Number: OPA1652
    Other Parts Discussed in Thread: OPA2134, RC4136, OPA1678, TINA-TI

    Have an active audio filter in an older piece of equipment that uses RC4136s. It is quite noisy. OPA2134 has been suggested as replacement,  as well as OPA1652. What…

  • PCM1681: Problem about the active filter.

    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…

  • RE: OPA2134: OPA2134 noise issue and gain is not good.

    "In order to input 2Vrms, I think that Gain should be under 1 because Vcc is 5V."

    This part won't work (well) with a single 5V supply. Choose an op-amp that will, such as OPA2365.

  • RE: OPA2134: OPA2134 noise issue and gain is not good.

    Hello user,

    Thank you for the additional information. The OPA2134 has the following input common mode voltage range:

    So if you're operating at 5V single supply:

    • the minimum input voltage is (V-)+2.5 = 0+2.5 = 2.5V
    • the maximum input voltage is (V…
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