To further suppress switching noise, the LTM8080 package incorporates an EMI barrier. The result is exceptionally low noise figures of <1 µVRMS (10 Hz to 100 kHz), 2 nV/√Hz (10 kHz) spot noise, and 80 dB PSRR (100 kHz). Compared to discrete solutions without EMI shielding, the LTM8080 reduces output ripple voltage by up to 70% for a simplified and quiet design. The LTM8080 is specifically designed to power digital loads susceptible to switching regulator noise, such as data converters, RF transmitters, FPGA clock and I/O, operational amplifiers, transceivers, and medical scanners.
The LTM8080 µModule's integrated Silent Switcher architecture minimizes EMI emissions and allows the device to pass CISPR22 Class B and CISPR25 Class 5 without an input filter. The adjustable switching frequency (200 kHz to 2 MHz) and selectable operating modes minimize the risk of frequency interference for ultra-low-noise instrumentation and high-speed/high-precision signal chain applications.
Additional Features of the LTM8080
- Dual 500 mA or single 1 A output current
- Output voltages: 0 V to 8 V
- Voltage tracking function to minimize power loss
- 100 μA SET pin current with ±1% initial accuracy
- Parallelizable for lower noise and higher current
