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SE4150L PDF预览

SE4150L

更新时间: 2024-11-09 12:49:55
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GPS Receiver IC Preliminary Datasheet

SE4150L 数据手册

 浏览型号SE4150L的Datasheet PDF文件第2页 
SE4150L  
GPS Receiver IC  
Preliminary Datasheet  
Applications  
Product Description  
The SE4150L is a highly integrated GPS receiver IC  
offering high performance and low-power operation in a  
wide range of low-cost applications. It is particularly  
well-suited to high sensitivity L1-band GPS systems.  
ƒ
High sensitivity / low power GPS / A-GPS apps.  
Personal Navigation Devices (PNDs) , mobile  
phones, and GPS peripheral devices  
ƒ
The SE4150L is ideal for use in GPS receivers needing  
dual-antenna inputs. The SE4150L includes two RF  
inputs with integrated antenna switching and external  
active-antenna current detection. A high-linearity on-  
chip LNA is used with one of the inputs, allowing the  
SE4150L to be used in multi-function wireless systems,  
without the need for additional external LNA devices. A  
fully integrated image-reject low-IF mixer is used with a  
linear AGC, an on-chip IF filter, and a 2-bit analogue-to-  
digital converter (ADC).  
Features  
ƒ
ƒ
ƒ
Single-conversion L1-band GPS radio with  
integrated IF filter  
Integrated LNA with high-gain (20 dB typ.) and low  
NF (0.9 dB typ.)  
Integrated antenna switching with active antenna  
current detection  
ƒ
ƒ
ƒ
ƒ
ƒ
Low cascaded system noise figure of 1.2 dB typical  
2-bit SIGN & MAG digital IF output  
2.7 V - 3.6 V operation  
The SE4150L features two gain control modes, to  
optimize the performance of the LNA and mixer for  
systems which either require high signal handling, or  
systems which need minimal supply current.  
Standby current <10 µA  
Fully integrated PLL synthesizer, VCO & loop filter  
compatible with 16.368 MHz ref. frequency  
ƒ
ƒ
4 x 4 x 0.9 mm 24 pin QFN  
The SE4150L synthesizer is fully integrated including  
the VCO and PLL loop-filter. The synthesizer can  
operate from a 16.368 MHz reference frequency,  
normally with an external TCXO.  
Pb-free, RoHS compliant and Halogen free  
Ordering Information  
The SE4150L is optimized for operation from a 3.3 V  
core power supply. It incorporates current-controlled  
low-spurious output buffers which may operate from a  
separate external supply. Output buffers supply  
sufficient current to drive up to 15 pF load directly.  
Part No.  
Package  
Remark  
SE4150L-R 24 pin QFN  
Shipped in Tape & Reel  
Functional Block Diagram  
Optional  
filter  
VAGC  
ANT_SW_OUT  
MIX_IN  
AGC  
Controller  
IF Filter  
LNA  
LNA_IN  
-45°  
MAG  
LN  
Buffer  
LNA Gain  
~
~
~
ADC  
+45°  
ANT1_IN  
SIGN  
Mix Gain  
To External Active  
Antenna  
CLK_OUT  
Filter Gain  
I
Q
ANT_BIAS  
HW_0  
HW_1  
Quadrature  
÷2  
Antenna  
Current  
Detect  
Feedback  
Divider  
Chip  
Control  
PLL  
VCO  
~
ANT_FEED  
ANT_DET  
CLK_EN  
RX_EN  
RVI  
Phase /  
Freq.  
Detector  
Charge  
Pump  
PLL Loop  
Filter  
Reference  
Buffer  
SE4150L  
TCXO IN VCC_TCXO  
DST-00176 ƒ Rev 2.7 ƒ May-26-2009  
1 of 2  

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