May 15, 2005 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: TG4a UWB PHY Pulse Peak to Peak voltage versus CMOS technologies Date Submitted: 15 May 2005 Source: Philippe Rouzet (STMicroelectronics) Contact: Philippe rouzet Voice: +41 22 929 5866, E-Mail: philippe.rouzet@st.com Abstract:. Brief revue of Integrated Circuit CMOS technologies for evaluation of optimum peak to peak voltage to be used for UWB PHY pulses. The figures refer to STMicroelectronics technologies Purpose: To provide a basis for further discussion on UWB PHY . Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15. Philippe Rouzet (STMicroelectronics)

CMOS peak to peak Voltage for pulse transmission (1/2) May 15, 2005 CMOS peak to peak Voltage for pulse transmission (1/2) Summary  (based on STMicroelectronics CMOS technology):   Techno. node  0.18um   0.13um     .09um 0.065um ------------------------------------------------------------------------------------------ core (V)     1.8       1.2     1.0 /1.2 (0.9/1.2) I/O (V)        3.3        2.5/3.3   2.5/3.3 Comments: see next slide  In summary, as a semiconductor company, ST would recommend to consider 1 V ptp max. and even less for durability of the pulse definition (next CMOS generations to come) if our primary concern is cost, power consumption and multi fab. compatibility. Philippe Rouzet (STMicroelectronics)

CMOS peak to peak Voltage for pulse transmission (2/2) May 15, 2005 CMOS peak to peak Voltage for pulse transmission (2/2) Comments: 1) obviously newer CMOS technology --> lower voltage 2) when 2 figures (e.g. 2.5/3.3), first is Low Power techno (low leakage, slower), second is General Purpose techno (more leakage but higher speed techno). For 15.4a, a good idea is to use Low Power. Indeed the ptp V is a little less 3) normally the figure to consider is core Voltage. However a trick exists: add one gate Oxide layer and then develop a PA final stage powered at I/O Voltage. Obviously a little more expensive. 4) Effect of antenna may have to be considered (inductive effect potentially causing overshoot at the PA output)   Philippe Rouzet (STMicroelectronics)