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Summary of Contents for unicore UM620A
- Page 1 HARDWARE REFERENCE DESIGN WWW.UNICORE.COM UM620 Series Multi-GNSS Dual-frequency Positioning Module Copyright© 2009-2024, Unicore Communications, Inc. Data subject to change without notice.
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Page 2: Revision History
This manual does not represent, and in any case, shall not be construed as a commitments or warranty on the part of Unicore with respect to the fitness for a particular purpose/use, the accuracy, reliability and correctness of the information contained herein. - Page 3 UM620 Series Hardware Reference Design be completely consistent with such information of the specific product you purchase. Should you purchase our product and encounter any inconsistency, please contact us or our local authorized distributor for the most up-to-date version of this manual along with any addenda or corrigenda.
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Page 4: Table Of Contents
Contents Reference Circuit Using an Active Antenna .............. 1 Reference Circuit Using a Passive Antenna .............. 2 Power Supply Requirements ..................3 Main Supply (VCC)..................... 3 Backup Supply (V_BCKP) .................. 3 Recommended BOM ....................4... -
Page 5: Reference Circuit Using An Active Antenna
UM620 Series Hardware Reference Design 1 Reference Circuit Using an Active Antenna The supply voltage for VCC is 2.7 V ~ 3.6 V Ground all GND pins of the module Connect the RF_IN signal to the antenna and note the 50 Ω impedance matching ... -
Page 6: Reference Circuit Using A Passive Antenna
2 Reference Circuit Using a Passive Antenna When using a passive antenna, a low noise amplifier should be added between the antenna and the RF_IN of the module in order to ensure the performance of the system. For the RF routing (antenna LNA RF_IN), note the 50 Ω impedance matching ... -
Page 7: Power Supply Requirements
UM620 Series Hardware Reference Design 3 Power Supply Requirements 3.1 Main Supply (VCC) The voltage range of VCC is 2.7 V ~ 3.6 V. Notes: The VCC initial level when power-on should be less than 0.4 V. The VCC ramp when power-on should be monotonic, without plateaus. The voltages of undershoot and ringing should be within 5% VCC. -
Page 8: Recommended Bom
4 Recommended BOM Component Order No. Manufacturer RS-232 TRS3122ERGER Transceivers MXDLN14TP MAXSCEND... - Page 9 和芯星通科技（北京）有限公司 Unicore Communications, Inc. 北京市海淀区丰贤东路 7 号北斗星通大厦三层 F3, No.7, Fengxian East Road, Haidian, Beijing, P.R.China, 100094 www.unicore.com Phone: 86-10-69939800 Fax: 86-10-69939888 info@unicorecomm.com www.unicore.com...
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