User's Manual

Confidential
INTERFACE DESCRIPT
20(31)
Document number Revision
1/155 19-KRD 104 1025 Uen PA4
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5.1.1 VIN
Function: Daughter card power supply
Description: Primary voltage supply to switching regulator
Pin Numbers: 14, 15, 16, 17, 18, 19
Signal Names: VIN [host⇒daughter card]
If not used: Required
Details:
Power provided by the host will range from 5.5V minimum to a maximum 20.0V. The
Daughter Card has on board regulation which regulates the supply range to a steady 3.6V
by means of a switching regulator rated at 3A max. The supply voltage range for the
monitor mount version, which includes the reservoir capacitor is 4.8V minimum to a
maximum of 20.0V.
Typical Electrical Characteristics:
Parameter Condition Low Mid High Unit
Voltage Min
1
7.4 20.0 V
Peak
2
w/o reservoir
capacitor
GSM850
2-slot TX
1880 1500 <1000
Peak
2
with reservoir
capacitor
GSM850
2-slot TX
<1000 <1000 <1000
Transmit mode
Power Consumption
(worst case)
average GSM850
2-slot TX
450 340 145 est
mA
Idle mode
Power Consumption
(worst case)
average
DRX 2 9.9 7.6 3.8 est mA
1. Min voltage for /2 and /21 variant is 5.5 V. Min voltage for /3 variant is 4.8 V.
2. Peak current consumption is an instantaneous value which occurs during a TDMA
transmitter burst.
Table 5.1-1: VIN Electrical Characteristics