Part Number: OPA1641 Other Parts Discussed in Thread: OPA27 Tool/software: Dear all, I'm currently designing an op amp buffer, based on the OPA1641 (part of a more general Hi-Fi preamplifier project). This buffer will receive audio signal from the output…
Hello AC,
The OPA1641 is a modern CMOS op amp that uses out latest op amp model that includes many of the op amp electrical characteristics. Common-mode and differential mode capacitances are among them.
The TL072 and TL082 are legacy JFET input op…
Part Number: OPA1641 Hello,
i'm having issues simulating a single supply opa1641 as a buffer.
On the input, i have a sinewave, 100mv Vpp and a 100ohm internal resistance but the output is centered around 199mV. The singla amplitude is not the same…
Part Number: OPA1641 Other Parts Discussed in Thread: TINA-TI Hi,
I'm performing a Spice Noise model verification of the OPA1641 in both Tina and LTSpice. I have the OPA1641 in a voltage follower configuration and checked the model at both +/-15 Vsupply…
Part Number: OPA1641-Q1 Other Parts Discussed in Thread: INA1650 , JFE150 , INA1620 ALL HI！
As shown in the figure below. The left J1 is the position of the external microphone. If I can't determine the mic_ The size of bias and the input voltage range…
Part Number: OPA1641 Other Parts Discussed in Thread: OPA1642 , TL971 , RC4558 , OPA1662 , OPA1692 Hi TI,
My application is:
The external device only provides 8V power to the DSP module, and then the DSP module should output an audio signal with a…
Part Number: OPA1641 Other Parts Discussed in Thread: TPS65130 , TPS7A39 Hi, I'm developing a circuit for guitar including an OPA1641 as pre-amp, and 2 buffer stages. My design will use +/-15V, generated from +9V. In terms of power for those stages, the…
Hi Brian,
Thank you for reporting this issue. Can you please ask for a simulation file (LTSpice is fine) which shows the issue that I can use to debug?
By the way, keep in mind that the maximum input common-mode voltage range of the OPA1641 is 3.5V…
Other Parts Discussed in Thread: OPA1641 Not sure if the forum is the right place to call this to TI's attention, but the datasheet for the OPA1641 audio op amp (and it's siblings) contains obvious errors in the electrical characteristics table. For example…
Other Parts Discussed in Thread: OPA1641 , OPA827 , LME49860 , THS4601 Hi,
I have seen in one post about minimum GBW for a filter, right now I have an audio filter project base on state variable filter using LME49860 & OPA1641 or OPA827 with:
F: 665Hz…
