Cinterion DSB75 - 8 Technical Data of DSB75; Table 34: DSB75 Maximum Ratings; Table 35: DSB75 Technical Data

DSB75 Development Support Board Rev. B1 Hardware Description
Confidential / Released
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DSB75_hd_v12 Page 81 of 96 2008-08-26
8 Technical Data of DSB75
Table 34: DSB75 maximum ratings
Parameter Condition Min. Max. Unit
Supply voltage Laboratory PSU -30 +30 V
Operating temperature +15 +35 °C
Storage temperature -40 +85 °C
Table 35: DSB75 technical data
Parameters Condition Min. Typical Max. Unit
Supply current peak 1 A
Supply current average
Laboratory PSU at 9V
requirements during
GSM transmission
300 400 mA
Supply voltage 8.5 9.0 15 V
Nominal supply voltage
for the GSM module
(adjustable)
2.85 4.1 *) 4.55 V
Minimum supply
voltage for GSM
module (adjustable)
2.85 3.5*) 4.55 V
V
BATT+
output voltage
*) for module MC75,
adjusted values
dependent on module
hardware
Maximum supply
voltage for GSM
module
4.45 4.5 4.55 V
VEXT
Switched logic high
level voltage (on if
GSM module on)
I
O
max = 50mA
2.75 2.93 3.05 V
3V0
Supply voltage for
DSB75 circuits
2.95 2.975 3.00 V
VDD
Supply voltage for the
pull-up resistors and
external use
I
O
max = 50mA
2.8 2.9 3.0 V
+5V
Audio interface supply
voltage
Audio interface supply
voltage
4.75 5.0 5.25 V