SE4120L-R

SE4120L GNSS Receiver IC Applications Dual-mode GPS and Galileo receivers Software-defined GNSS radio systems High sensitivity / low power GNSS / A-GNSS apps. Portable navigation devices, mobile phones, and GNSS peripheral devices Telematics equipment Product Description 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 SE4120L’s 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 nearzero 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 lowspurious 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. Features Single conversion L1-band GPS/Galileo radio with integrated IF filter 2-bit serialized digital I/Q output at near-zero IF Integrated LNA with high-gain (18.5 dB typ.) and low NF (1.7 dB typ.) Low 2.2 dB typ. RF system noise figure Low 10 mA operating current with 2.7-3.6 V supply; 8 mA with internal LNA disabled Low Standby current 3 μA typical Fully integrated VCO and resonator Integrated PLL supporting 16.368 MHz reference frequency I/O supply range extends down to 1.7 V 4 x 4 mm 24 pin QFN, RoHS-compliant package Ordering Information Part No. SE4120L-R Package 24 Pin QFN Remark Shipped in Tape & Reel Functional Block Diagram Optional filter LNA_OUT MIX_IN VAGC IF Filter AGC Controller -45° AGC_DIS Buffer LNA ~ ~ ~ I Q FILT_BW DATA_OUT ADC Data Downconverter / Serializer Sample Clock divider +45° SYNC LNA_IN CLK_OUT Quadrature ÷2 VCO Feedback Divider FILT_BW Fs_SEL1 Chip Control SE4120 ~ Phase/Frequency Detector Reference Divider Fs_SEL0 RX_EN OSC_EN ~ VTUNE PLL Loop Filter Reference Oscillator / Buffer RVI XTAL1/ TCXO IN XTAL2 . DST-00059 Rev 3.5 May-26-2009 1 of 2 SE4120L GNSS Receiver IC http://www.sige.com Email: sales@sige.com Customer Service Locations: North America: 1050 Morrison Drive, Suite 100 Ottawa ON K2H 8K7 Canada Phone: +1 613 820 9244 Fax: +1 613 820 4933 Hong Kong Phone: +852 3428 7222 Fax: +852 3579 5450 San Diego Phone: +1 858 668 3541 (ext. 226) Fax: +1 858 668 3546 United Kingdom Phone: +44 1279 464217 Fax: +44 1279 464201 Product Preview The datasheet contains information from the product concept specification. SiGe Semiconductor, Inc. reserves the right to change information at any time without notification. Preliminary Information The datasheet contains information from the design target specification. SiGe Semiconductor, Inc. reserves the right to change information at any time without notification. Production testing may not include testing of all parameters. Information furnished is believed to be accurate and reliable and is provided on an “as is” basis. SiGe Semiconductor, Inc. assumes no responsibility or liability for the direct or indirect consequences of use of such information nor for any infringement of patents or other rights of third parties, which may result from its use. No license or indemnity is granted by implication or otherwise under any patent or other intellectual property rights of SiGe Semiconductor, Inc. or third parties. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SiGe Semiconductor, Inc. products are NOT authorized for use in implantation or life support applications or systems without express written approval from SiGe Semiconductor, Inc. Copyright 2009 SiGe Semiconductor, Inc. All Rights Reserved DST-00059 Rev 3.4 May-26-2009 2 of 2