System Maintenance:
There may be intermittent impact on performance while updates are in progress. We apologize for the inconvenience.
By Topic

A 3.3-mW ΣΔ modulator for UMTS in 0.18-μm CMOS with 70-dB dynamic range in 2-MHz bandwidth

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

4 Author(s)
van Veldhoven, Robert H.M. ; Philips Res. Labs., Eindhoven, Netherlands ; Minnis, B.J. ; Hegt, H.A. ; van Roermund, A.H.M.

A quadrature fourth-order, continuous-time, ΣΔ modulator with 1.5-b quantizer and feedback digital-to-analog converter (DAC) for a universal mobile telecommunication system (UMTS) receiver chain is presented. It achieves a dynamic range of 70 dB in a 2-MHz bandwidth and the total harmonic distortion is -74 dB at full-scale input. When used in an integrated receiver for UMTS, the dynamic range of the modulator substantially reduces the need for analog automatic gain control and its tolerance of large out-of-band interference also permits the use of only first-order prefiltering. An IC including an I and Q ΣΔ modulator, phase-locked loop, oscillator, and bandgap dissipates 11.5 mW at 1.8 V. The active area is 0.41 mm2 in a 0.18-μm 1-poly 5-metal CMOS technology.

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:37 ,  Issue: 12 )