Справочник Пользователя для Sagem Wireless 95MASV3C
Ref : SCT TMO MOD SPEC 662
Rev.:
Rev.:
B
Ref. sec. :
Date:
18/11/2004
Document
. All rights of reproduction and disclosure reserved.
MO2XX module – Confidential under NDA
Page 16/67
3.5 ANTENNA
Two accesses for the antenna connection are provided.
- one by mean of a 50ohms connector
- one by mean of a simple copper area
Figure 5
Antenna area on the MO2XX
See into Application Note for more details.
3.6 DAI
A DAI interface is provided on the module for type approval tests.
3.7 CLOCKS
A 32KHz frequency clock and a 13MHz frequency digital clock are provided on external pins of the module.
To ensure proper operation of such sensitive signals, they have to be isolated from the other by ground on mother
board layout.
3.8 POWER MANAGEMENT AND CHARGE
3.8.1 Battery
The power supply signal VBAT is 3.45V to 4.5V range and 3.8V nominal.
Only Li-Ion battery are supported.
It has to be more than 3.2V, even during transients in order to avoid unwanted resets. The power supply dropout
has to be limited to 450mV, when the current consumption goes from minimum to maximum (0.1 to 2A). The noise
level of the power supply has to be limited to 50mV RMS in the 100KHz – 1MHz frequency range
SAGEM advises to use Sanyo or LG battery. If battery is used, SAGEM agreement is needed (slight qualification
tests).
Only battery with 200mOhms maximum internal resistor are managed by the module.
Antenna ground
copper area
Antenna copper pad
50 Ohms connector