User's Manual

16
Atmel AVR2080
8479A-AVR-01/12
7.4 Transmitter characteristics
Test conditions (unless otherwise stated):
V
DD
= 3.0V, f
RF
= 2.45GHz, T
OP
= 25°C, TX_PWR=0xA, X2 conducted
Table 7-4. Transmitter characteristics.
No. Parameter Condition Minimum Typical Maximum Unit
7.4.1 TX Output Power Ch11 … 25, Ch26
(1)
+5 +20 +23.5
(2)
dBm
7.4.2 Output Power Range 15 18 dB
7.4.3 Harmonics average, worst case 4f0 -50 -44 dBm/MHz
7.4.4 Spurious Emissions tbd. dBm
Note: 1. Ch26 requires TX output power back-off and duty cycle operation, see Notes for details.
2. V
DD
= 3.6V, AT86RF231 sub-register TX_PWR = 0x0.
Notes:
• The Atmel REB231FE2 setup has been tested for compliance with FCC and ETSI,
see Appendix B. To en
sure compliance, the following regional specific settings are
to be ensured
• FCC: Operating the transmitter at channel 26 requires limitation of TX output
power to max. +13dBm and to ensure a duty cycle 25%
• FCC: Operating the setup at maximum possible TX output power for all other
channels requires either an adjustment of the lowpass filters (C25, L3, C40 and
C27, L2, C41), or alignment of the TX duty cycle
• ETSI: Operating the setup in Europe requires setting the Atmel AT86RF231
register TX_PWR to 0x0E maximum for all channels. This setting ensures
compliance with ETSI EN 300 228 clause 4.3.2.2 Maximum Power Spectral
Density (refer to [6])
7.5 Receiver characteristics
Test conditions (unless otherwise stated):
V
DD
= 3.0V, f
RF
= 2.45GHz , T
OP
= 25°C, X2 conducted
Table 7-5. Receiver characteristics.
No. Parameter Condition Minimum Typical Maximum Unit
7.5.1 Receiver Sensitivity PER 1%, PSDU length 20 octets -104
7.5.2 Maximum RX input level -5
(1)
7.5.3 Spurious Emissions -70
dBm
7.5.4 RSSI/ED offset
(2)(3)
SE2431L LNA in high gain mode 13 dB
Note: 1. Calculated, based on AT86RF231 maximum RX input level – SE2431L maximum RX gain.
2. AT86RF231 RSSI value indicates RF input power P
RF
[dBm] = (RSSI_BASE_VAL-13) + 3×(RSSI-1), see [1] Chapter
References.
3.
AT86RF231 ED value indicates RF input power P
RF
[dBm] = -104 + ED, see [1] Chapter References.