Title :
Programmable gain amplifier for 13.5 6 MHz radio receiver in CMOS 90 nm technology
Author :
Teodorowski, M. ; Pleskacz, Witold A. ; Takeshian, T. ; Pomorski, Tomasz
Author_Institution :
Inst. of Microelectron. & Optoelectron., Warsaw Univ. of Technol., Warsaw, Poland
Abstract :
In this paper, a PGA (Programmable Gain Amplifier) for 13.56 MHz radio receivers will be presented. The gain of the simulated PGA, based on the circuit presented in [1], is controlled by 4-bit digital word and is linear in decibels using apseudo-exponential function. The circuit achieves a gain range of 22.91 dB (0.53-23.44 dB) with an absolute gain error not higher than 0.74 dB. The maximum gain step and minimum 3 dB bandwidth are equal to 2.02 dB and 125.8 MHz, respectively. The amplifier consumes 1.52 mW in active and 1.50 nW in standby mode from 2.5 V single power supply.
Keywords :
CMOS integrated circuits; HF amplifiers; radio receivers; CMOS; digital word; frequency 125.8 MHz; frequency 13.56 MHz; gain 0.53 dB to 23.44 dB; power 1.5 nW; power 1.52 mW; programmable gain amplifier; pseudo-exponential function; radio receiver; size 90 nm; voltage 2.5 V; word length 4 bit; Integrated circuits; Automatic Gain Control (AGC); CMOS; Common Mode Feedback (CMFB); Programmable Gain Amplifier (PGA); Variable Gain Amplifier (VGA); dB-linear gain characteristic; digitally-controlled analog amplifier;
Conference_Titel :
Mixed Design of Integrated Circuits and Systems (MIXDES), 2012 Proceedings of the 19th International Conference
Conference_Location :
Warsaw
Print_ISBN :
978-1-4577-2092-5
