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Industry's First 0.8uVRMS Noise LDO Has 79dB Power Supply Rejection Ratio at 1MHz

Authored on: Apr 1, 2015 by Amit Patel

Technical Paper / Application Note

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When it comes to powering noise-sensitive analog/RF applications, LDO linear regulators are generally preferred over their switching counterparts. Low noise LDOs power a wide range of analog/RF designs, including frequency synthesizers (PLLs/VCOs), RF mixers and modulators, high speed and high resolution data converters (ADCs and DACs) and precision sensors. The LT3042's breakthrough noise and PSRR performance, coupled with its robustness and ease-of-use, make it ideal for powering noise-sensitive applications. With its current-reference based architecture, noise and PSRR performance remain independent of the output voltage. Additionally, multiple LT3042s can be directly paralleled to further reduce output noise, increase output current and spread heat on the PCB.

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