NXP Semiconductors FREESCALE MC13192, Справочное руководство, Страница: 29 / 34

RF Front End
MC13192EVB Reference Manual, Rev. 1.2
Freescale Semiconductor 3-11
3.9 RF Measurements
The measurements presented here are typical values as measured on the MC13192EVB. These values do
not represent guaranteed performance.
3.9.1 RX Sensitivity
The input level is adjusted until 100 mV RMS appears on GPIO4. Actual sensitivity at 1% Packet Error
Rate (PER) is reached at approximately 20 mV PP at GPIO4, so a correction factor of 23 dB is employed.
A 6.8 nH coil provides the best and most uniform sensitivity in this layout.
3.9.2 TX Output Power
A 7.5 nH coil would be optimum in this layout to provide high output power and flat frequency response.
Table 3-1. Receive Sensitivity
L101 Sensitivity (100mV RMS at GPIO4) Sensitivity (approximately 1% PER)
nH 2405 MHz 2445 MHz 2480 MHz 2405 MHz 2445 MHz 2480 MHz
5.6 nH -71 dBm -71 dBm -72 dBm -94 dBm -94 dBm -95 dBm
6.8 nH -73 dBm -73 dBm -73 dBm -96 dBm -96 dBm -96 dBm
Table 3-2. Transmit Output Power
L102 Output Power (At Maximum)
nH 2405 MHz 2445 MHz 2480 MHz
6.8 nH 1.5 dBm 1.7 dBm 2.1 dBm
8.2 nH 2.4 dBm 2.2 dBm 1.5 dBm
10 nH 1.5 dBm 1.0 dBm 0.5 dBm