Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved.
FIBOCOM NL668-LA Series Hardware Guide
Page 50 of 61
8 Reliability
8.1 Limiting Voltage Range
The limiting voltage range is maximum voltage range that power supply and digital or analog input/output
interfaces can withstand.
8.1.1 Absolute Voltage Range
The absolute voltage range of NL668-LA series module is shown as table 8-1.
Table 8-1 Absolute voltage range
Parameter
description
Min
Typ.
Max
Unit
VBAT
Power supply
-0.3
3.8
4.7
V
GPIO
Digital IO supply voltage
-0.3
1.8
2.0
V
8.1.2 Operating Voltage Range
Table 8-2 Operating Voltage Range
Parameter
V
L
V
H
Unit
Min
Max
Min
Max
Digital input
-0.3
0.6
1.2
2.0
V
Digital output
-
0.45
1.35
-
V
V
L
: logic low level; V
H
: logic high level;
Parameter
I/O
Min
Typ
Max
Unit
VBAT
PI
3.3
3.8
4.3
V
USIM_VDD
PO
1.7/2.75
1.8/2.85
1.9/2.95
V
8.2 Environment Temperature Range
The recommended operating temperature range of NL668-LA series module.is -30
℃
to +75
℃
. When
module operating at limited temperature range, some RF indexes may exceed standard, so module
application terminal should consider temperature control measurement. The module application terminal
is recommended storage in certain temperature conditions. Modules out of the temperature range may
not operate or may be damaged.
