The week's pick
Reseach Article
A Novel Design Method of Two-Stage CMOS Operational Transconductance Amplifier used for Wireless Sensor Receiver
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 39 - Number 11 |
| Year of Publication: 2012 |
| Authors: Radwene Laajimi, Nawfil Gueddah, Mohamed Masmoudi |
10.5120/4861-7093
|
Radwene Laajimi, Nawfil Gueddah, Mohamed Masmoudi . A Novel Design Method of Two-Stage CMOS Operational Transconductance Amplifier used for Wireless Sensor Receiver. International Journal of Computer Applications. 39, 11 ( February 2012), 1-11. DOI=10.5120/4861-7093
Abstract
Operational transconductance amplifier (OTA) is one of the most significant building-blocks in integrated discret-time filters used in analog to digital converter (ADC) for Sigma-delta converter. In this paper we designed a novel design method of two-stage CMOS amplifier in AMS 0.35?m technology. P-Spice simulation results confirm the proposed OTA circuit. In fact, we achieved a gain band width (GBW) equal to 55 MHz, Cut-off frequency of 85 KHz and 57 dB gain (Av). In addition our new method allowed us to reduce settling time (St) to 15.6 ns and a slew rate (SR) of 0.1 V/µs at ±1.5V supply voltage. Eventually we have also succeeded in reducing the average power consumption to 1.65 mW while driving 3 pF load capacitor.
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