Ozan E. Erdogan

A single-chip quad-band GSM/GPRS transceiver in 0.18 /spl mu/m standard CMOS

A 0.18 /spl mu/m CMOS single-chip fully integrated quad-band GSM/GPRS transceiver is presented. The low-IF receive section achieves -110dBm sensitivity at the antenna and -15dBm IIP3. The offset-frequency PLL transmitter achieves 1.2/spl deg/ rms phase noise, -65dBc modulation mask at 400kHz, and -165dBc/Hz noise at 20MHz. The chip occupies 17mm/sup 2/ and dissipates 95mA/112mA in receive/transmit mode.

A 5/sup th/-order continuous-time harmonic-rejection G/sub m/C filter with in-situ calibration for use in transmitter applications

A 0.18 /spl mu/m CMOS fifth-order harmonic-rejection G/sub m/C filter is presented for use in offset PLL transmitter applications. Using an in-situ calibration scheme with a tuning accuracy of 2% and a maximum calibration time of 90 /spl mu/s, this filter tunes from 52 to 151MHz and draws 7mA from a 1.8V supply while achieving an IIP3 of 7dBV with an output noise floor of 9.3 /spl mu/V in a 30kHz BW.

A 12 bit, 2-MS/s, 0.016-mm 2 column-parallel readout cyclic ADC, having 50% reduced slew rate requirement due to feed-forward spike eliminator

This publication presents a cyclic A/D converter system, which can be used for column-parallel sensor readout applications. The converter system includes ADC, fully integrated ADC references, timing generator, calibration engine, and an on-chip ramp generator for complete on-chip testing. This publication solves the exaggerated issue of feed-forward transient glitches in capacitor-shared cyclic and pipelined ADCs. This publication also solves some existing issues in fully integrated references of pipeline and cyclic ADC, namely reduced voltage range, and memory effects. The area of the core cyclic ADC operating at 12 bit resolution and 2MS/s conversion rate is only 0.016mm2. The measured DNL and INL are +0.47/-0.68 LSB and +/-0.99 LSB respectively. The ADC is implemented in TSMC 55nm CMOS technology using 3.3V devices, the ADC consumes 850μW from 3.3V supply.