By Topic

A tiny, high-speed, wide-band, voltage-feedback amplifier stable with all capacitive load

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Moraveji, F. ; Nat. Semicond. Corp., Santa Clara, CA, USA

A tiny, high-speed, wide-band, voltage-feedback operational amplifier capable of driving unlimited capacitive load is described. A class AB input stage is combined with a modified dynamic Witch-Hazel current mirror to provide high slew rate and wide bandwidth with a small die area and small idle current. An RC network couples part of the capacitive load into the high-impedance node, therefore lowering the dominant pole and increasing stability as a function of capacitive load. The part was fabricated on a 3 GHz, 40 V complementary bipolar process. The quiescent current of the chip is 4.5 mA with 1500 V/μm slew rate and a -3 dB bandwidth of 235 MHz. The part is operational from ±2.5 V to ±18 V supply range. Die size is 38 mils by 46 mils and it fits into a tiny surface outline transistor (SOT) package

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:31 ,  Issue: 10 )