English
español
Please use this identifier to cite or link to this item:
http://hdl.handle.net/10261/85043
Share/Impact:
Statistics |
![]() ![]() ![]() |
|
|
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |||
|
Title: | Very wide range tunable CMOS/bipolar current mirrors with voltage clamped input |
Authors: | Serrano-Gotarredona, Teresa ![]() ![]() |
Issue Date: | 1999 |
Publisher: | Institute of Electrical and Electronics Engineers |
Citation: | IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications 46(11): 1398-1407 (1999) |
Abstract: | In low power current mode signal processing circuits it is often necessary to use current mirrors to replicate and amplify/attenuate current signals and clamp the voltage of nodes with high parasitic capacitances so that the smallest currents do not introduce unacceptable delays. The use of tunable active-input current mirrors would meet both requirements. In conventional active-input current mirrors, stability compensation is required. Furthermore, once stabilized, the input current cannot be made arbitrarily small. In this paper we introduce two new active-input current mirrors that clamp their input node to a given voltage. One of them does not require compensation, while the other may under some circumstances. However, for both, the input current may take any value. The mirrors can operate with their transistors biased in strong inversion, weak inversion, or even as CMOS compatible lateral bipolar devices. If it is biased in weak inversion or as lateral bipolars, the current mirror gain can be tuned over a very wide range. According to the experimental measurements provided in this paper, the input current may spawn beyond nine decades and the current mirror gain can be tuned over 11 decades. As an application example, a sinusoidal gm-C-based VCO has been fabricated, whose oscillation frequency could be tuned for over seven decades, between 74 mHz and 1 MHz. |
Description: | El pdf del artículo es la versión de autor. |
Publisher version (URL): | http://dx.doi.org/10.1109/81.802845 |
URI: | http://hdl.handle.net/10261/85043 |
DOI: | http://dx.doi.org/10.1109/81.802845 |
Identifiers: | doi: 10.1109/81.802845 issn: 1057-7122 |
Appears in Collections: | (IMSE-CNM) Artículos |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Very wide.pdf | 360,69 kB | Adobe PDF | ![]() View/Open |
Show full item record
Review this work
Review this work
WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.