Marco Losi

A 56-mW 23-mm/sup 2/ single-chip 180-nm CMOS GPS receiver with 27.2-mW 4.1-mm/sup 2/ radio

A 56-mW 23-mm/sup 2/ GPS receiver with CPU-DSP-64 kRAM-256 kROM and a 27.2-mW 4.1-mm/sup 2/ radio has been integrated in a 180-nm CMOS process. The SoC GPS receiver, connected to an active antenna, provides latitude, longitude, height with 3-m rms precision with no need of external host processor in a [-40, 105]/spl deg/C temperature range. The radio draws 17 mA from a 1.6-1.8-V voltage supply, takes 11 pins of a VFQFPN68 package, and needs just a few passives for input match and a crystal for the reference oscillator. Measured radio performances are NF=4.8 dB, Gp=92 dB, image rejection > 30 dB, -112 dBc/Hz phase noise @ 1 MHz offset from carrier. Though GPS radio linearity and ruggedness have been made compatible with the co-existence of a microprocessor, radio silicon area and power consumption is comparable to state-of-the-art stand-alone GPS radio. The one reported here is the first ever single-chip GPS receiver requiring no external host to achieve satellite tracking and position fix with a total die area of 23 mm/sup 2/ and 56-mW power consumption.

23mm/sup 2/ single-chip 0.18/spl mu/m CMOS GPS receiver with 28mW-4.1 mm/sup 2/ radio and CPU/DSP/RAM/ROM

A 23 mm/sup 2/ 0.18 /spl mu/m CMOS GPS receiver with ARM7-DSP-64 k RAM-256 k ROM and a 28 mW-4.1 mm/sup 2/ radio has been integrated. The SoC GPS receiver, connected to an active antenna, provides latitude, longitude, height with 3 m rms precision with no need of external host processor in [-20,80]/spl deg/C temperature range. The radio draws 17.5 mA from a 1.6 V-1.8 V supply, takes 11 pins of a VFQFPN68 package and needs just a few passives for input matching and one crystal. Measured radio performances are: NF=4.8 dB, Gp=92 dB, image rejection >30 dB, -112 dBc/Hz @ 1 MHz offset phase noise. Though linearity and ruggedness of the GPS radio have been made compatible with the co-existence of microprocessor, its silicon area and power consumption is aligned with state-of-the-art stand-alone CMOS GPS radio. The one reported here is the first ever radio successfully embedded into a single-chip GPS receiver requiring no external host to achieve satellite tracking and position fix with a total die area of 23 mm/sup 2/.