Rainbow Electronics ATmega128RFA1 - Manual (Page 509)

509
8266A-MCU Wireless-12/09
ATmega128RFA1
Symbol Parameter Condition Min. Typ. Max. Units
Receiver sensitivity
250 kb/s
500 kb/s
1000 kb/s
2000 kb/s AWGN channel, PER ≤ 1%,
PSDU length 20 octets
High Data Rate Modes:
PSDU length 20 octets
-100
-96
-94
-86
dBm
dBm
dBm
dBm P
SENS
Antenna Diversity 250 kb/s, PSDU 20 octets -99 dBm
RL Return loss 100Ω differential impedance 10 dB
NF Noise figure 6 dB
P
RXMAX
Maximum RX input level PER ≤ 1%, PSDU length of 20 octets 10 dBm
P
ACRN
Adjacent channel rejection:
-5 MHz PER ≤ 1%, PSDU length of 20 octets,
P
RF
= -82 dBm
34 dB
P
ACRP
Adjacent channel rejection:
+5 MHz PER ≤ 1%, PSDU length of 20 octets,
P
RF
= -82 dBm
38 dB
P
AACRN
Alternate channel rejection:
-10 MHz PER ≤ 1%, PSDU length of 20 octets,
P
RF
= -82 dBm
54 dB
P
AACRP
Alternate channel rejection:
+10 MHz PER ≤ 1%, PSDU length of 20 octets,
P
RF
= -82 dBm
54 dB
P
SPUR
Spurious emissions:
LO leakage
30 – ≤ 1000 MHz
>1 – 12.75 GHz
-71
-57
-47
dBm
dBm
dBm
f
RXTXOFFS
TX/RX carrier frequency offset Sensitivity loss < 2 dB -300
(1)
+300 kHz
IIP3 3
rd
– order intercept point At maximum gain
Offset freq. interf. 1 = 5 MHz
Offset freq. interf. 2 = 10 MHz -14 dBm
IIP2 2 nd – order intercept point At maximum gain
Offset freq. interf. 1 = 60 MHz
Offset freq. interf. 2 = 62 MHz 17 dBm
RSSI tolerance Tolerance within gain step ±5 dB
RSSI dynamic range 81 dB
RSSI resolution 3 dB
RSSI sensitivity Defined as RSSI_BASE_VAL -90 dBm
Minimum RSSI value P
RF
≤ RSSI_BASE_VAL 0
Maximum RSSI value P
RF
> RSSI_BASE_VAL + 81 dB 28
Note: 1. Offset equals ±120 ppm
34.8.5 Current Consumption Specifications
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 .