User's Manual

Preliminary Rev 0.6 December 10, 2010 14
6. Baseband Specification
6.1. Power Supply
The AirPrime AR series is powered via a single regulated DC power supply, 4.0V +5/-10%. The
power supply requirements can be found in the following table.
Table 11: Power supply requirements
Power Supply Min Typ Max Units
Main DC Power Input Range 3.6 4.0 4.2 V
Power Supply Ripple
0 to 1kHz 200 mVpp
>1kHz 50 mVpp
Maximum Current draw AR8550/8552 2.5 A
AirPrime AR series does not support USB self powered operation.
Table 12: Power supply pad
Pad Name Direction Function If Unused
S20 VBATT Input Power Supply Input Required
6.2. Current Consumption
The table below summarizes some key current consumption values for varies modes of the AR series
devices.
Device Mode Parameter Typical Max Units
AR8550 /
AR8552
On Call
Maximum TX Output – WCDMA - 800 mA
+0dBm TX Output – WCDMA tbd - mA
GSM Low Band TX – PL5 - tbd mA
GSM High Band TX – PL - tbd mA
Scan
Searching for network – WCDMA 46 - mA
Searching for network – GSM 43 - mA
Sleep Mode
On-network, "listening" for page – WCDMA - 2 mA
On-network, "listening" for page – GSM - 2 mA
All AR
Series
Off Power OFF Current 3.6 10 µA
6.3. USB
The AirPrime AR series has a High Speed USB2.0 compliant, peripheral only interface.
Table 13: USB pad details
Pad Name Direction Function
R1 USB_VBUS Input USB Power Supply