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Unable to model LTC3260 in LTspice

Category: Hardware
Product Number: LTC3260
Software Version: 17.1.8

Hi,

I'm trying to model LTC3260 for potential use as a low noise bipolar supply for op amps in a microphone circuit (converting from single rail from phantom power found in mixers/audio interfaces/etc.). I keep getting errors or LTspice just takes forever to no avail when I run simulation. The LTC3260 is configured to regulate down to +/- 10V. Can someone tell me what I'm doing wrong here? Also are there simpler or alternative solutions to providing a clean bipolar supply from a single rail? Thanks in advance for any pointers.

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  • I downloaded the official spice model from Analog for the ADA4075 since it isn't natively included in LTspice library. Frankly I'm not sure why you don't natively support a lot of your chips in LTspice. Anyhow, the whole point was to model the system in its entirety. ADA4075 is significantly quieter (which is extremely desirable in this applicaition) than ADA4077 and the quiescent requirements differ a bit. Anyhow I could give your suggestion a shot.

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