Telit Wireless Solutions ML865G1 - Page 22

Telit Wireless Solutions ML865G1

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ML865G1 HW Design Guide

1VV0301632 Rev. 4 Page 22 of 86 2020-09-23

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Table of Contents

Notice2
- Copyrighted Materials3
- High Risk Materials3
- License Agreements3
- Third Party Rights3
- Trademarks3
Copyrights2
Computer Software Copyrights2
Usage and Disclosure Restrictions3
Applicability Table4
Contents5
- Table of Contents5
1 Introduction9
- Scope9
- Audience9
- Contact Information, Support9
- Text Conventions10
- Related Documents11
2 General Product Description12
- Overview12
- Product Variants and Frequency Bands12
- Target Market13
- Main Features13
- TX Output Power14
- RX Sensitivity15
- Ml865G1-Ww15
  - Mechanical Specifications17
- Dimensions17
- Weight17
  - Temperature Range17
3 Pins Allocation18
- Pin-Out18
- Pin Layout23
4 Power Supply24
- Power Supply Requirements24
- Power Consumption25
- Idle Mode25
- ML865G1-WW Connected Mode27
  - General Design Rules28
- Electrical Design Guidelines28
- Source Power Supply Design Guidelines28
- Source Power Supply Design Guidelines29
- Battery Source Power Supply Design Guidelines29
- Thermal Design Guidelines30
- Power Supply PCB Layout Guidelines31
  - RTC Supply32
  - VAUX Power Output32
5 Digital Section34
- Logic Levels34
- Power on35
- Auto Power on38
- Power off38
- Unconditional Shutdown40
- Wake from Deep Sleep Mode43
- Fast Power down43
- Fast Shut down by Hardware44
- Fast Shut down by Software45
  - Communication Ports45
- Usb 2.0 Hs45
- Spi47
- SPI Connections48
- Serial Ports48
- Modem Serial Port 1 (USIF0)48
- Modem Serial Port 2 (USIF1)50
- RS232 Level Translation51
  - General Purpose I/O52
- Using a GPIO as INPUT53
- Using a GPIO as OUTPUT54
- Indication of Network Service Availability54
  - External SIM Holder55
  - ADC Converter55
- Using ADC Converter56
  - Forced USB Boot56
6 Rf Section57
- Bands Variants57
- TX Output Power57
- RX Sensitivity57
- Antenna Requirements57
- PCB Design Guidelines58
- PCB Guidelines in Case of FCC Certification60
- Transmission Line Design60
- Transmission Line Measurements62
- Antenna Installation Guidelines64
7 Audio Section65
- Electrical Characteristics65
- Codec Examples65
8 Gnss Section66
- GNSS Signals Pin-Out66
- RF Front End Design66
- Guidelines of PCB Line for GNSS Antenna66
- Hardware-Based Solution for GNSS and LTE Coexistence67
  - GNSS Antenna Requirements67
- GNSS Antenna Specification67
- GNSS Antenna - Installation Guidelines68
- Powering the External LNA (Active Antenna)68
  - GNSS Characteristics69
9 Mechanical Design70
- Drawing70
10 Application Pcb Design71
- General71
- Footprint71
- PCB Pad Design73
- PCB Pad Dimensions73
- Stencil74
- Solder Paste75
- Solder Reflow75
11 Packaging77
- Tray77
- Reel79
- Moisture Sensitivity79
12 Conformity Assessment Issues81
- ANATEL Regulatory Notices81
13 Safety Recommendations82
- Read Carefully82
14 Acronyms83
15 Document History85

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