Telit Wireless Solutions ME910C1 Series - 10.2. PCB pad design

Telit Wireless Solutions ME910C1 Series

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ME910C1 HW User Guide

1VV0301351 Rev.8 Page 82 of 99 2018-09-28

PCB pad design

Non solder mask defined (NSMD) type is recommended for the solder pads on the PCB.

PCB

Copper

Pad

Solder Mask

SMD

(Solder Mask Defined)

NSMD

(Non Solder Mask Defined)

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
- VV0301351 Rev8
1 Introduction9
- Scope9
- Audience9
- Contact Information, Support9
- Text Conventions10
- Related Documents10
2 Overview11
3 Pins Allocation13
- Pin-Out13
- LGA Pads Layout23
4 Power Supply24
- Power Supply Requirements24
- Power Consumption26
- General Design Rules29
- Electrical Design Guidelines of the Power Supply29
- +5V Source Power Supply Design Guidelines29
- Source Power Supply Design Guidelines30
- Battery Source Power Supply Design Guidelines31
- Thermal Design Guidelines32
- Power Supply PCB Layout Guidelines32
  - VAUX Power Output35
  - RTC Supply35
5 Digital Section36
- Logic Levels36
- Power on36
- Power off41
- Wake from Deep Sleep Mode43
- Unconditional Shutdown43
- Fast Power down47
- Fast Shut down by Hardware47
- Fast Shut down by Software48
  - Communication Ports49
- Usb 2.0 Hs49
- Spi50
- Serial Ports51
- Modem Serial Port 151
- Modem Serial Port 253
- RS232 Level Translation54
  - General Purpose I/O55
- Using a GPIO as INPUT56
- Using a GPIO as OUTPUT57
- Indication of Network Service Availability57
  - External SIM Holder58
  - ADC Converter58
6 Rf Section60
- Bands Variants60
- TX Output Power60
- RX Sensitivity61
- Antenna Requirements66
- PCB Design Guidelines70
- PCB Guidelines in Case of FCC Certification72
- Transmission Line Design72
- Transmission Line Measurements73
- Antenna Installation Guidelines75
7 Audio Section76
- Electrical Characteristics76
- Codec Examples76
8 Gnss Section77
- GNSS Signals Pin-Out77
- RF Front End Design77
- Guidelines of PCB Line for GNSS Antenna77
  - GNSS Antenna Requirements77
- GNSS Antenna Specification78
- GNSS Antenna - Installation Guidelines78
- Powering the External LNA (Active Antenna)78
  - GNSS Characteristics79
9 Mechanical Design80
- Drawing80
10 Application Pcb Design81
- Footprint81
- PCB Pad Design82
- PCB Pad Dimensions83
- Stencil84
- Solder Paste84
- Solder Reflow85
11 Packaging87
- Tray87
- Reel88
- Carrier Tape Detail89
- Reel Detail90
- Packaging Detail91
- Moisture Sensitivity91
12 Conformity Assessment Issues92
- Approvals92
- FCC Certificates92
- IC/ISED Certificates92
- FCC/ISED Regulatory Notices92
- Declaration of Conformity94
13 Safety Recommendations95
- Read Carefully95
14 Acronyms96
- Document History98

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