Ultra low noise, ultra high PSRR µModule regulators for noise sensitive applications

Analog Devices introduces an ultra-low noise dual output DC/DC μModule voltage regulator that features patented innovations in chip design, layout and packaging. At the front of the LTM8080 is a high-efficiency synchronous Silent Switcher step-down type regulator, followed by two separate low-noise, low-voltage difference (LDO) regulators with operating input voltage up to 40 V.

To further suppress switching noise, the LTM8080 package incorporates EMI shielding with noise as low as < 1 µVRMS (10 Hz to 100 kHz) with 2 nV/√Hz (10 kH) spot noise and 80 dB PSRR (100 kHz). The LTM8080 reduces the output ripple voltage by 70% compared to discrete solutions without EMI shielding, resulting in a simpler, quieter design. The LTM8080 is designed to power digital loads susceptible to switching regulator noise, such as data converters, RF transmitters, FPGA I/O and clocks, operational amplifiers, transceivers, and medical scanners.

Other LTM8080 features:

● Dual channel 500 mA or single channel 1 A output current

● Output voltage: 0 V to 8 V

● Voltage tracking function, can minimize power loss

● 100 μA SET of pin current, initial accuracy is ±1%

● Can be parallel to achieve lower noise and higher current