Hardware Manual
Table Of Contents
- WE865-DUAL Hardware User Guide
- Contents
- 1 Overview
- 2 Mechanical description
- 3 Pin-out
- 4 Electrical description
- 5 Thermal design guidelines
- 6 PCB layout design guidelines
- 7 Antenna
- 8 Integration with the GE863-PRO3
- 9 WE865-DUAL - Evaluation kit
- 10 Mounting the WE865-DUAL on the application board
- 11 Moisture sensitivity
- 12 Conformity assessment issues
- 13 Safety recommendations
- 14 Document change log
WE865-DUAL HW User Guide
1vv0300787 Rev. 1 - 03/10/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 16 of 48
VOLTAGE LEVELS @ 25 °C
VIL
SIGNAL
Min [V] Max [V]
EN_A*, EN_B* 0 0.20
Table 7
Figure 4
4.2 Power supply design guidelines
The power supply circuitry is a very important part in the full product design and it strongly affects the
product overall performances, hence read carefully the requirements and the guidelines that will follow
for a proper design.
The table below shows the WE865-DUAL operating voltage range:
VOLTAGE RANGE
Nominal Supply Voltage 3.8V
Minimum Supply Voltage 3.4V
Max Supply Voltage 4.2V
Table 8
The electrical design of the power supply strongly depends on the power source the current is drained
from. Please refer to electrical design guidelines in the GE863-PRO
3
Hardware User Guide for further
information.
WE865-DUAL
EN_B*
EN_A*