Rainbow Electronics ATmega128RFA1 - Manual (Page 508)

508
8266A-MCU Wireless-12/09
ATmega128RFA1
Symbol Parameter Condition Min. Typ. Max. Units
f
PSDU
PSDU bit rate As specified in [1],[2]
OQPSK_DATA_RATE = 1
OQPSK_DATA_RATE = 2
OQPSK_DATA_RATE = 3 250
500
1000
2000
kb/s
kb/s
kb/s
kb/s
f
CHIP
Chip rate As specified in [1],[2] 2000 kchip/s
f
CLK
Crystal oscillator frequency Reference oscillator 16 MHz
t
XTAL
Reference oscillator settling time Leaving SLEEP state to clock available at
pin 17 (CLKM) 215 1000 µs
Symbol rate deviation
Reference frequency accuracy for
correct functionality
PSDU bit rate 250 kb/s
500 kb/s
1000 kb/s
2000 kb/s
-60
(1)
-40
-40
-30
+60
+40
+40
+30 ppm
ppm
ppm
ppm
B
20dB
20 dB bandwidth 2.8 MHz
Note: 6. A reference frequency accuracy of ±40 ppm is required by [1], [2].
34.8.3 Transmitter Characteristics
Test Conditions (unless otherwise stated):
V
DD
= 3.0V, f
RF
= 2.45 GHz, T
OP
= 25°C, Measurement setup see Figure 32-1 on page
493 .
Symbol Parameter Condition Min. Typ. Max. Units
P
TX
TX Output power Maximum configurable TX output power
value
Register bit TX_PWR = 0 0 +3.5 +6 dBm
P
RANGE
Output power range 16 steps, configurable in
register 0x05 (PHY_TX_PWR) 20 dB
P
ACC
Output power tolerance ±3 dB
TX Return loss 100Ω differential impedance,
P
TX
= +3.5 dBm
10 dB
EVM 8 %rms
P
HARM
Harmonics
2
nd harmonic
3
rd
harmonic
-38
-45
dBm
dBm
P
SPUR
Spurious Emissions
30 – ≤ 1000 MHz
>1 – 12.75 GHz
1.8 – 1.9 GHz
5.15 – 5.3 GHz Complies with
EN 300 328/440,
FCC-CFR-47 part 15,
ARIB STD-66, RSS-210
-36
-30
-47
-47
dBm
dBm
dBm
dBm
34.8.4 Receiver Characteristics
Test Conditions (unless otherwise stated):
V
DD
= 3.0V, f
RF
= 2.45 GHz, T
OP
= 25°C, PSDU bit rate = 250 kb/s, Measurement setup
see Figure 32-1 on page 493 .