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UC-00-M15 EN R1.4

Hardware Design

16

LNA

UM220-IV L

VCC

UC6226

SAW

LNA

FB

VCC_RF

V_ANT

ANT_DET_N

RF_IN

GND

Antenna

Figure 4- 2 UM220-IV L Passive Antenna High-performance Solution

4.2.2

Active Antenna

The active antenna increases the system power consumption when improving the

system performance. The 3.3V Power Supply (VCC_RF) provided by the UM220-IV l

module can be used to power the antenna directly if the function of detecting the state

of the antenna inside the module is not used and the working voltage of the antenna is

3.3V.

Coaxial Aerial Cable

UM220-IV L

VCC

UC6226

SAW

LNA

FB

VCC_RF

V_ANT

ANT_DET_N

RF_IN

GND

R1 10

Ω

10nF

L

DC-Block

100pF

68nH

Active Antenna

Figure 4- 3 UM220-IV L Active Antenna Solution Powered by VCC_RF

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Содержание UM220-IV L

Страница 1: ...INSTALLATION AND OPERATION USER MANUAL WWW UNICORECOMM COM Copyright 2009 2023 Unicore Communications Inc Data subject to change without notice UM220 IV L Single Frequency Multi GNSS Timing Module...

Страница 2: ...t and such rights may evolve and be approved registered or granted from the whole information aforesaid or any part s of it or any combination of those parts Unicore holds the trademarks of UNICORECOM...

Страница 3: ...criptions features and user guide in this manual are subject to change by Unicore at any time without prior notice which may not be completely consistent with such information of the specific product...

Страница 4: ...the product features and information of the hardware design installation specification and the use of UNICORECOMM UM220 IV L module Audience This manual is created for the technical personnel who pos...

Страница 5: ...7 2 1 Prerequisites 7 2 2 Installation 8 3 Technical Specifications 9 3 1 Electrical Specifications 9 3 2 Operating Conditions 9 3 3 Mechanical Specifications 10 3 4 Pin Definition 11 3 5 PCB Packagi...

Страница 6: ...II 4 6 Layout Recommendation 22 5 Packaging 23 5 1 Product Labeling 23 5 2 Packaging Description 23 6 Soldering and Disassembly 25 6 1 Disassembly 25 6 2 Clean 25 6 3 Reflow Soldering 25...

Страница 7: ...he positioning speed through the assistant data service of UNICORECOMM in the scenario of networking With the combined function of filter linear amplifier and antenna protection and optimized RF archi...

Страница 8: ...essional Automotive GPS QZSS BDS GLONASS Galileo 3 0V UART1 UART2 Antenna Detection 1PPS Antenna Feed Built in flash Update Rate AGNSS DGNSS UM220 IV L 17x22 mm 1 Hz 1 3 Block Diagram GNSS IC SAW LNA...

Страница 9: ...te 4800 115200 bps GNSS Performance Constellations BDS B1 1561 098MHZ GPS L1 1575 42MHZ GLONASS L1OF 1602MHZ Galileo E1 B C 1575 42MHZ TTFF2 Time to First Fix Cold Start 28s Hot Start 1s Reacquisition...

Страница 10: ...tatic scenes In this mode users are required to input the exact position of receiver antenna center through CFGTM manually which are used by UM220 IV L module to calculate the distance between the ant...

Страница 11: ...adjustable and can be configured and queried through CFGTP TIMTP is used to describe the related 1PPS information including the corresponding time and time accuracy indicators 1 7 UART Two UART inter...

Страница 12: ...quickly in weak signal environments UM220 IV L also integrates the 32k crystal to maintain the RTC clock When the main power supply is removed the normal operation of the RTC can be maintained by prov...

Страница 13: ...s before opening antistatic plastic boxes Perform the steps in section 2 2 Installation in the correct order Electrostatic discharge ESD may cause a damage to the device All operations referred to in...

Страница 14: ...V L EVK suite and take out the evaluation board Step 3 Select the GNSS antenna with the appropriate gain the system frequency supported by the antenna should be consistent with the module fix it in th...

Страница 15: ...ature Tstg 40 85 Maximum ESD Stress VESD HBM 500 V 3 2 Operating Conditions Table 3 2 Operating Conditions Parameter Symbol Min Typical Value Max Units Condition Power Supply Voltage VCC 3 0 3 3 3 6 V...

Страница 16: ...ecifications Table 3 3 Dimensions Parameter Min mm Typical Value mm Max mm A 22 1 22 4 23 0 B 16 9 17 0 17 1 C 2 1 2 4 2 7 D 2 45 2 55 2 85 E 1 0 1 1 1 2 F 3 7 3 8 3 9 G 2 75 2 85 3 15 H 0 82 K 0 7 0...

Страница 17: ...Leave this pin floating if idle 2 RXD2 I LVTTL COM2 is for data transmission Firmware upgrade is not supported Leave this pin floating if idle 3 TXD1 O LVTTL COM1 is for data transmission Firmware up...

Страница 18: ...the hot start function connect V_BCKP to VCC Do NOT leave it floating or connect it to ground 12 NC 13 GND Ground 14 GND Ground 15 GND Ground 16 RF_IN I GNSS signal input 17 GND Ground 18 VCC_RF O 3 0...

Страница 19: ...4 Technical Specifications 13 3 5 PCB Packaging Figure 3 3 UM220 IV L Recommended PCB Packaging unit mm in brackets mil When designing PCB solder mask make sure that the area under UM220 IV l module...

Страница 20: ...than 500 ms 4 1 2 Backup Supply V_BCKP If the hot start function is needed users should supply backup power to the module The voltage range of V_BCKP is 1 65 V 3 6 V Notes The V_BCKP initial level wh...

Страница 21: ...IN GND Antenna Figure 4 1 UM220 IV L Passive Antenna Solution To improve the performance of RF analog front end a low noise amplifier LNA can be added behind the passive antenna UM220 IV L module prov...

Страница 22: ...proving the system performance The 3 3V Power Supply VCC_RF provided by the UM220 IV l module can be used to power the antenna directly if the function of detecting the state of the antenna inside the...

Страница 23: ...damage or other Electrical Over Stress EOS When the working voltage of the active antenna is not 3 3V the antenna can be powered by the external power supply If the antenna power supply and the module...

Страница 24: ...switch If the V_ANT pin is directly connected without a serial resistor the module will be damaged when the antenna is short circuited The internal switch is turned off by default which can be switch...

Страница 25: ...the antenna can be powered by connecting an external power supply with a 10 serial resistor to the V_ANT pin Since this power supply is directly connected to the RF_IN pin of the module this power sup...

Страница 26: ...ated value the module determines that the antenna is open circuit The resistance of the series resistor R1 can be adjusted according to the antenna working current Coaxial Aerial Cable R1 10 R2 560 R3...

Страница 27: ...is powered on To prevent the leakage power ensure that the IO port connected to the module is in high impedance or low level when the module is not powered on 4 4 RESET Time Sequence There is a reset...

Страница 28: ...e note with the antenna impedance matching and the circuit is short and smooth try to avoid acute angles Connect the RF signal to the antenna and make sure the 50 impedance match on the circuit Antenn...

Страница 29: ...aluminum foil antistatic bags with a desiccant inside to prevent moisture When using reflow welding process to weld modules please strictly comply with IPC standard to conduct humidity control on modu...

Страница 30: ...al diameter 330mm internal diameter 100mm width 24mm thickness 2 0mm Carrier tape Space between 20mm UM220 IV L module is rated at MSL level 3 refer to the relevant IPC JEDEC standards for baking requ...

Страница 31: ...le the module is blown off by a hot air gun which may lead to module damage 6 2 Clean Do NOT use alcohol or other organic solvents to clean it may lead to flux residues into the shielding shell causin...

Страница 32: ...Unicore Communications Inc 7 F3 No 7 Fengxian East Road Haidian Beijing P R China 100094 www unicorecomm com Phone 86 10 69939800 Fax 86 10 69939888 info unicorecomm com www unicorecomm com...

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