The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Multistage operational amplifiers suitable for nanometer-scale CMOS technologies and low-voltage applications are described. The low intrinsic gain of transistors is compensated for with cascade of single-stage amplifiers. Techniques for compensations are revisited and the optimal solution identified. An example of a novel scheme that achieves 67 dB of DC gain, 320 MHz of bandwidth and 61 degrees...
Although audio-band sigma delta ADC has largely been implemented as discrete time circuits, a continuous time approach offers significant advantages for high accuracy low-power applications. A continuous time design allows for relaxed amplifier unity-gain bandwidth and power requirements. It also provides better noise immunity due to their inherent anti-aliasing properties. This paper introduces a...
This paper proposes a design for a low power cascaded three stage Operational Amplifier, with frequency compensation by Nested Miller Compensation which could be made to operate at low voltage supplies. The multipath technique is used to increase the bandwidth by converting the system into a two stage amplifier at high frequencies. The Op-Amp is designed in 180 nm technology and operates at a 3 V...
A two-stage simple Miller-compensated (SMC) amplifier with embedded negative current buffer design is presented in this paper. The compensation technique based on current buffer allows elimination of the right half-plane zero in SMC system, offers significant improvement in bandwidth and considerably lowers the compensation capacitance requirement. Simulation results show that the unity-gain frequency...
Some samples of the ISO122 and the ISO124, capacitor-based isolation amplifiers from Texas Instruments, were irradiated in a neutron & gamma environment in order to investigate their tolerance to the total radiation dose. After the experimental data, the most sensitive parameters were the offset voltages, transmission gain and the typical output error. In any case, devices are still operative...
In applications where size and efficiency are critical switched mode power supply converters are used. A switched mode DC-DC buck converter or step-down converter use output filter capacitor to reduce output voltage ripple. To reduce size of buck converter, the elimination of the capacitor must be done. Instead of the capacitor the structure with additional linear amplifier is introduced for output...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.