Quectel UC20 User Manual

UMTS/HSPA Module Series
UC20 Hardware Design
UC20_Hardware_Design Confidential / Released 4 / 84
3.10. UART Interface ........................................................................................................................ 38
3.11. USIM Card Interface ................................................................................................................ 42
3.11.1. USIM Card Application ................................................................................................... 42
3.11.2. Design Considerations for USIM Connector .................................................................. 44
3.12. USB Interface .......................................................................................................................... 46
3.13. PCM and I2C Interface ............................................................................................................ 47
3.14. ADC Function .......................................................................................................................... 50
3.15. Network Status Indication ........................................................................................................ 51
3.16. Operating Status Indication ..................................................................................................... 52
3.16.1. STATUS .......................................................................................................................... 52
3.16.2. SLEEP_IND.................................................................................................................... 53
3.17. Behavior of the RI .................................................................................................................... 54
4 GNSS Receiver ................................................................................................................................... 55
4.1. General Description ................................................................................................................. 55
4.2. GNSS Performance ................................................................................................................. 56
4.3. Layout Guideline ...................................................................................................................... 57
5 Antenna Interface ............................................................................................................................... 58
5.1. UMTS Antenna Interface ......................................................................................................... 58
5.1.1. Pin Definition .................................................................................................................. 58
5.1.2. Operating Frequency ..................................................................................................... 58
5.1.3. Reference Design .......................................................................................................... 58
5.2. GNSS Antenna Interface ......................................................................................................... 59
5.2.1. Reference Design for Passive Antenna ......................................................................... 60
5.2.2. Reference Design for Active Antenna ............................................................................ 61
5.3. Antenna Installation ................................................................................................................. 61
5.3.1. Antenna Requirement .................................................................................................... 61
5.3.2. Install the Antenna with RF Connector .......................................................................... 62
6 Electrical, Reliability and Radio Characteristics ............................................................................ 64
6.1. Absolute Maximum Ratings ..................................................................................................... 64
6.2. Power Supply Ratings ............................................................................................................. 65
6.3. Operating Temperature ............................................................................................................ 65
6.4. Current Consumption .............................................................................................................. 65
6.5. RF Output Power ..................................................................................................................... 67
6.6. RF Receiving Sensitivity .......................................................................................................... 67
6.7. Electrostatic Discharge ............................................................................................................ 67
7 Mechanical Dimensions .................................................................................................................... 69
7.1. Mechanical Dimensions of the Module.................................................................................... 69
7.2. Footprint of Recommendation ................................................................................................. 72
7.3. Top View of the Module ........................................................................................................... 73
7.4. Bottom View of the Module ...................................................................................................... 73
8 Storage and Manufacturing .............................................................................................................. 74
8.1. Storage..................................................................................................................................... 74

Quectel UC20 Specifications

General

Brand	Quectel
Model	UC20
Category	Control Unit
Language	English