User's Manual

AVR2044
17
8339A-AVR-09/10
7 Electrical Characteristics
7.1 Absolute Maximum Ratings
Stresses beyond those listed under “Absolute Maximum Ratings” may cause
permanent damage to the RCB. This is a stress rating only and functional operation
of the device at these or any other conditions beyond those indicated in the
operational sections of this manual are not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability. For more details
about these parameters refer to individual datasheets of the components used.
No. Parameter Condition Min. Typ. Max. Units
7.1.1 Storage temperature range -40 +85 °C
7.1.2 Humidity Non-condensing 80 %
7.1.3 Supply voltage -0.3 +3.6 V
7.1.4 EXT IO pin voltage All digital IO signals -0.3 V_RCB
+0.3
V
7.1.5 Analog IO pin voltage Aref
2
PORTF pins when ADC enabled
-0.3 2.0 V
7.1.6 Supply current from RCB battery through
EXT connectors
Sum over all power pins together -0.5 A
7.1.7 Battery Charge Current AAA NiMH Accu
AAA Alkaline Cell
1
0.5
0
A
mA
7.1.8 DC Voltage at RF connection 100 V
7.1.9 ESD Voltage HBM 1000 V
7.1.10 Input RF level 14 dBm
Note: 1. Note section 5.1.2 if RCB is mounted to a base board.
2. Never drive Aref from an external source, see [1] for further details.
7.2 Recommended Operating Range
No. Symbol Parameter Condition Min. Typ. Max. Units
7.2.1 T
OP
Operating temperature range 16MHz within +/-40ppm -20 +70 °C
7.2.2 V_RCB Supply voltage f
CPU
= 16MHz or below 1.8
1
3.0 3.6 V
7.2.3 f
RF
Operating frequency range 2400 2483.5 MHz
Note: 1. Minimum value assuming stand alone operated RCB. If mounted on a base
board, value may be increased.
7.3 General RF Specifications
For general RF specifications refer to the Atmega128RFA1 datasheet [1]. The RCB
schematic follows the application circuit. The filter balun and SMA connector resulting
in a typical loss of 1dB in TX output power and sensitivity, compared to the values as
shown in the radio transceiver section.