A 28mW WCDMA/GSM/GPRS/EDGE transformer-based receiver in 45nm CMOS

Author

Griffith, Danielle ; Srinivasan, Venkatesh ; Pennisi, Salvatore ; Rentala, Vijay ; Su, Yu ; Sankaran, Swaminathan ; Elahi, Imtinan ; Samala, Sreekiran ; Kiper, Halil ; Patel, Bijit ; Akhtar, Siraj ; Edmondson, Dan

Author_Institution

Texas Instrum., Dallas, TX, USA

fYear

2010

fDate

23-25 May 2010

Firstpage

9

Lastpage

12

Abstract

A transformer-based receiver designed in 45nm CMOS that meets WCDMA, GSM, GPRS, and EDGE system requirements is presented. The receiver requires no interstage SAW filters and consumes 20mA from 1.4V. The use of a transformer at the LNA output helps achieve high linearity by lowering the voltage swing while simultaneously providing current gain. The analog back end is implemented with two cascaded gain stages and a 2^nd order ΣΔ ADC. The receiver has a gain of 60dB, noise figure of 3.0dB and an IIP2 of >+50dBm on both I+Q channels. The die area is 1.35mm² for 4 bands.

Keywords

CMOS integrated circuits; analogue-digital conversion; cellular radio; code division multiple access; packet radio networks; radio receivers; surface acoustic wave filters; 2nd order ΣΔ ADC; CMOS; EDGE; GPRS; GSM; WCDMA; current 20 mA; current gain; interstage SAW filters; power 28 mW; size 45 nm; transformer-based receiver; voltage 1.4 V; voltage swing; Capacitors; Energy consumption; GSM; Ground penetrating radar; Impedance; Linearity; Low-noise amplifiers; Multiaccess communication; Receivers; SAW filters; 45nm; CMOS; EDGE; GSM; WCDMA; radio receiver; transformer;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits Symposium (RFIC), 2010 IEEE

Conference_Location

Anaheim, CA

ISSN

1529-2517

Print_ISBN

978-1-4244-6240-7

Type

conf

DOI

10.1109/RFIC.2010.5477404

Filename

5477404