Specifications

Chapter 8 – SocketModem GPRS (MTSMC-G)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342C) 116
Electrical Characteristics
5 V DC Characteristics (TA = -20° C to 55° C; VDD = 5 V ± 0.25 V)
VDDMAX
= 5.25 V
Digital Inputs
–DTR (40), –TXD (35), –RTS (33), –RESET (24)
Input High
Min 3.675 V
Input Low
Max .7 V
Digital Outputs
–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)
Output High
Min. 4 V
Output Low
Max 0.4 V
Current Drive:
2 mA
Digital Input Capacitance 5 pF
Power Consumption
Power Consumption in EGSM900 and GSM850 @25 degrees C
Conditions I
NOM
I
MAX
+5V
During TX bursts @2 W 1.2 A 1.3 A
+5V
Average @ 2 W 250 mA 320 mA
+5V
Average @ ).5 W 180 mA 200 mA
+5V
Average idle mode 15 mA 25 mA
Power Consumption in GSM1800 & 1900 MHz @25 degrees C
Conditions I
NOM
I
MAX
+5V
During TX bursts @1 W 1.1 A 1.2 A
+5V
Average @1 W 210 mA 235 mA
+5V
Average @ 0.25 W 165 mA 185 mA
+5V
Average idle mode 15 mA 25 mA
Power Consumption in EGSM/GPRS 900 MHz and GSM/GRPS 850 MHz Mode Class 10
Conditions I
NOM
I
MAX
+5V
During TX bursts @ 2 W 1.2 A 1.3 A
+5V
Average @ 2 W 420 mA 470 mA
+5V
Average @ 0.5 W 280 mA 320 mA
+5V
Average idle mode 15 mA 25 mA
Power Consumption in GSM/GRPS 1800 MHz and GSM/GRPS 1900 MHz Class 10
Conditions I
NOM
I
MAX
+5V
During TX bursts @ 1 W 1.1 A peak 1.2 A peak
+5V
Average @ 1 W 350 mA 400 mA
+5V
Average @ 0.25 W 180 mA 210 mA
+5V
Average idle mode 15 mA 25 mA