User Manual

160
8111A–AVR–05/08
AT86RF231
12.7 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 Fig-
ure 5-1 on page 12.
Note: 1. Offset equals ±120 ppm.
Table 12-7. Receiver Characteristics
No. Symbol Parameter Condition Min. Typ. Max Units
12.7.1 P
SENS
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
-101
-97
-95
-89
dBm
dBm
dBm
dBm
Antenna Diversity 250 kb/s, PSDU 20 octets -99 dBm
12.7.2 RL Return loss 100Ω differential impedance 10
12.7.3 NF Noise figure 6
12.7.4 P
RXMX
Maximum RX input level PER ≤ 1%, PSDU length of 20 octets 10
12.7.5 P
ACRN
Adjacent channel rejection:
-5 MHz
PER ≤ 1%, PSDU length of 20 octets,
P
RF
= -82 dBm
29
12.7.6 P
ACRP
Adjacent channel rejection:
+5 MHz
PER ≤ 1%, PSDU length of 20 octets,
P
RF
= -82 dBm
35
12.7.7 P
AACRN
Alternate channel rejection:
-10 MHz
PER ≤ 1%, PSDU length of 20 octets,
P
RF
= -82 dBm
47
12.7.8 P
AACRP
Alternate channel rejection:
+10 MHz
PER ≤ 1%, PSDU length of 20 octets,
P
RF
= -82 dBm
47
12.7.9 P
SPUR
Spurious emissions:
LO leakage
30 - ≤1000 MHz
>1 - 12.75 GHz
-71
-57
-47
dBm
dBm
dBm
12.7.10 f
RXTXOFFS
TX/RX carrier frequency offset Sensitivity loss < 2 dB -300
(1)
+300 kHz
12.7.11 IIP3 3
rd
- order intercept point At maximum gain
Offset freq. interf. 1 = 5 MHz
Offset freq. interf. 2 = 10 MHz
-14 dBm
12.7.12 IIP2 2
nd
- order intercept point At maximum gain
Offset freq. interf. 1 = 60 MHz
Offset freq. interf. 2 = 62 MHz
17 dBm
12.7.13 RSSI tolerance Tolerance within gain step ±5 dB
12.7.14 RSSI dynamic range 81 dB
12.7.15 RSSI resolution 3dB
12.7.16 RSSI sensitivity Defined as RSSI_BASE_VAL -90 dBm
12.7.17 Minimum RSSI value P
RF
≤ RSSI_BASE_VAL 0
12.7.18 Maximum RSSI value P
RF
> RSSI_BASE_VAL + 81 dB 28