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Summary of Contents for unicore UM621 Series
- Page 1 HARDWARE REFERENCE DESIGN WWW.UNICORECOMM.COM UM621 Series Automotive Grade Dual-frequency Multi-GNSS Integrated Positioning Module Copyright© 2009-2023, Unicore Communications, Inc. Data subject to change without notice.
- Page 2 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 UM621 Series Hardware Reference Design our local authorized distributor for the most up-to-date version of this manual along with any addenda or corrigenda.
- Page 4 Contents Reference Circuit Using an Active Antenna ..............1 Reference Circuit Using a Passive Antenna ..............2 Power Supply Requirements ..................3 Recommended BOM ....................4...
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Page 5: Reference Circuit Using An Active Antenna
UM621 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; 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
UM621 Series Hardware Reference Design 3 Power Supply Requirements 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. -
Page 8: Recommended Bom
4 Recommended BOM Component Order No. Manufacturer RS-232 MAX3232EUE+ 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.unicorecomm.com Phone: 86-10-69939800 Fax: 86-10-69939888 info@unicorecomm.com www.unicorecomm.com...
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