Specifications
Table Of Contents
- 1Introduction
- 1.1Product Outline
- 1.2Hardware Interface Overview
- 1.3Hardware Block Diagram
- 1.4Functional Overview
- 2Package Information
- 2.1Pin Assignment Overview
- 2.2Pin Description
- 2.3Mechanical Information
- 2.4Footprint Recommendation
- 3Interface Application
- 3.1Power Supply
- 3.3WAKEUP Description
- 3.5UART Interface
- 3.6RI signal behaviors
- 3.7ADC
- 3.8SIM Card Interface
- 3.9Network Status
- 4Operation Mode
- 4.1Operating mode
- 4.2PSM
- 4.3PSM wake up
- 5RF Specifications
- 5.1LTE RF Specifications
- 5.2LTE Antenna Design Guide
- 5.3RF Layout Design Guide
- 6Electrical Specifications
- 6.1Normal Operating Conditions
- 6.2Current Consumption
- 6.3ESD Notes
- 7SMT Production Guide
- 7.1Top and Bottom View of SIM7028
- 7.2Typical SMT Reflow Profile
- 7.4Baking
- 8Packaging
- 8.1Tray packaging
- 9Appendix
SIM7028 Hardware Design V1.00
www.simcom.com 39 / 48
@10dbm: 34mA
@0dbm: 24mA
@10dbm: 25mA
@0dbm: 19mA
@10dbm: 15mA
@0dbm: 15mA
@10dbm: 59mA
@0dbm: 38mA
B70
@23dbm : 96mA
@10dbm: 33mA
@0dbm: 24mA
@23dbm : 62mA
@10dbm: 24mA
@0dbm: 19mA
@23dbm : 25mA
@10dbm: 15mA
@0dbm: 14mA
@23dbm : 185mA
@10dbm: 56mA
@0dbm: 37mA
B85
@23dbm : 110mA
@10dbm: 32mA
@0dbm: 19mA
@23dbm : 70mA
@10dbm: 23mA
@0dbm: 17mA
@23dbm : 28mA
@10dbm: 14mA
@0dbm: 12mA
@23dbm : 206mA
@10dbm: 54mA
@0dbm: 29mA
6.3 ESD Notes
SIM7028 is sensitive to ESD in the process of storage, transporting, and assembling. When SIM7028 is
mounted on the users’ mother board, the ESD components should be placed beside the connectors which
human body may touch, such as SIM card holder, audio jacks, switches, keys, etc. The following table
shows SIM7028 ESD measurement performance without any external ESD component.
Table 24: The ESD performance measurement table (Temperature: 25℃, Humidity: 45%.)
Part
Contact discharge
Air discharge
GND（Shield）
6±KV
12±KV
GND （RF）
6±KV
12±KV
VBAT
5±KV
10±KV
Antenna port
5±KV
10±KV