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Sleep Mode
Call or CSD call
or GPRS data
3.3 Power Supply
The G610 power supply must be a single external DC voltage source of 3.3V to 4.5V. The
power supply must be able to sustain the voltage level during a GSM transmit burst current serge,
which may reach 2.0A.
The G610 interface connector has 2 pins for the main power supply, as described in the table.
All these contacts must be used for proper operation.
G610 Pin#
26
27
1
21
22
24
25
28
46
3.3.1 Power Supply Design
Special care must be taken when designing the power supply of the G610. The single external
DC power source indirectly supplies all the digital and analog interfaces, but also directly supplies
the RF power amplifier (PA). Therefore, any degradation in the power supply performance, due to
losses, noises or transients, will directly affect the G610 performance.
The burst-mode operation of the GSM transmission and reception draws instantaneous current
G610 GPRS Module Hardware User Manual
CTS_N signal is wave.
LPG signal is toggling.
G610 Signal name
BATT
GND
The G610 is in low power mode.
The application interfaces are disabled, but,
G610 continues to monitor the GSM
network.
A GSM voice or data call is in progress.
When the call terminates, G610 returns to
the last operating state (Idle or Sleep).
Description
DC power supply.
BATT = 3.3 V to 4.5 V
4.0V is recommended
Ground
Page 13 of 47
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