Telit Wireless Solutions ML865G1 - Page 84

Telit Wireless Solutions ML865G1

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ML865G1 HW Design Guide

1VV0301632 Rev. 4 Page 84 of 86 2020-09-23

SRDY

Slave Ready

CS

Chip Select

RTC

Real Time Clock

PCB

Printed Circuit Board

ESR

Equivalent Series Resistance

VSWR

Voltage Standing Wave Radio

VNA

Vector Network Analyzer

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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