A 1 MHz–10.2 MHz BW/0 dB–70 dB gain DPOTA-based baseband chain receiver

Abstract

In this paper, a digital programmable OTA-based multi-standard receiver analog baseband (ABB) chain is proposed. The proposed ABB consists of a 4th-order Butterworth low-pass filter (LPF) and two programmable gain amplifiers (PGAs). The LPF exhibits a cutoff frequency tuning range from 1 MHz to 10.2 MHz, thus, it covers Bluetooth, UMTS, DVB-H and IEEE 802.11a/g standards. The gain of the proposed PGA varies from 0 dB to 35 dB with a step of 5 dB. The ABB is designed and simulated in 90 nm CMOS technology with a balanced 1.2 V supply voltage. The IIP3 of the proposed ABB is 23.9 dBm and the overall power consumption is 9.1 mW.