Q
How can the 1/f noise of the ADM7150/ADM7151 be reduced?
A
The BYP capacitor value can be increased to reduce the noise below 1 kHz at the expense of increasing the start-up time of the LDO.…
Q
How close to drop out voltage can one operate an LDO in order to squeeze the last ounce out of my circuits efficiency?
A
The minimum headroom required is highly dependent on the LDO characteristics…
Question How is the output noise spectral density of an ultra-low noise LDO measured? Answer Noise measurement equipment such as the Agilent E5505A or E5052B forms the
basis of the noise test fixture…
Question How is the RMS output noise of an ultra-low noise LDO measured? Answer The noise test measurement system allows the user to integrate the noise
spectral density data over the desired bandwidth…
Question What type of passive filters can be added to the output of a linear regulator
without causing instability? Answer Modern internally compensated LDOs are surprisingly robust when it comes to…
