GNSS Receiver IC

The SE4120L is a highly-integrated GNSS Radio front end IC offering high performance and low power operation in a wide range of low-cost applications. It supports GPs and dual-mode L1-band GPs Galileo products. The SE4120L features a conditioned Interface for software implementations of GNSS baseband signal processing. The SE4120L includes an on-chip LNA a low IF receiver with a linear AGC and an advanced multi-bit I/Q Analog to digital converter (ADC) with serialized data output. The receiver incorporates a fully integrated image reject mixer, obviating the need for a SAW Filter in many applications. The SE4120Ls on-chip IF Filter may be adjusted from 2.2 MHz BW (for GPs only) to 4.4MHz BW (for simultaneous reception of Galileo and GPs signals). The digitized I/Q output, centered near- zero IF, is available in a serialized data stream to facilitate software signal processing. The highly-integrated PLL synthesizer of the SE4120L requires only two passive components to implement an off-chip loop Filter The SE4120L is optimized for the lowest possible power consumption consistent with a very low external component count. The SE4120L incorporates current-controlled low- spurious output Buffers which may be run from a separate external supply to Interface to low voltage systems. Output Buffers supply sufficient current to drive most baseband devices directly. By SiGe Semiconductor