[time-nuts] Low noise powersupplies

[Ole Petter Ronningen]

Hello, all

I thought it may be of interest to some of the members of this list that TI
is selling evaluation modules for some ultra low noise regulators for $20
in their estore, shipping world wide included. The specs looks pretty
decent to me, and I've ordered up a couple of boards to use as "clean up
boxes" for my bench-supplies, to use on noise-sensitive projects.

1.4-30v output TPS7A4701EVM-094
3.5µVRMS (10Hz, 100KHz)
<25 nV/√Hz (10Hz, 1MHz)
Maximum Output Current of 1A

+-15v version TPS7A30-49EVM-567:
15v rail:
Noise:
 12.7µVRMS (20Hz to 20kHz)
 15.4µVRMS (10Hz to 100kHz)
Power-Supply Ripple Rejection:
 72dB (120Hz)
 ≥ 52dB (10Hz to 400kHz)
Maximum Output Current: 150mA


-15v rail:
Noise:
 14µVRMS (20Hz to 20kHz)
 15.1µVRMS (10Hz to 100kHz)
Power-Supply Ripple Rejection:
 72dB (120Hz)
 ≥ 55dB (10Hz to 700kHz)
Maximum Output Current: 200mA

Ole