User's Manual

WF-U21DS-
SSA1
IEEE 802.11a/b/g/n/ac 2T2R SDIO WIFI Module
&BT2.1+EDR/4.2/5.1
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Sichuan AI-Link Technology Co.,Ltd. page
16 of 20
3.6.3 LE Specification
Items
Contents
Host Interface
SDIO
Antenna Reference
Small antennas with 0~2 dBi peak gain
Channel
CH0 to CH39
Min.
Typ.
Max.
Unit
TX Characteristics
1. Output power at NOC
4
dBm
2. Modulation Characteristics
1)Delta f1(Avg)
225
275
kHz
2)Delta f2max(For at least 99.9% of all Delta f2max)
185
kHz
3)Delta f2/ Delta f1
0.8
0.94
Hz/Hz
3. Carrier frequency offset and drift
1) Frequency Offset
-150
150
kHz
2) Frequency Drift
-50
50
kHz
3) Max Drift Rate
-20
20
Hz/us
4.In-band Spurious Emissions
1)+/-2M offset
20
dBm
2)>+/-3MHz offset
30
dBm
RX Characteristics
1. Receiver Sensitivity (BER<30.8%)
-91
dBm
2. Maximum usable signal (BER<30.8%)
-5
dBm
4. Conditions of use
4.1Please keep the antenna away from metal and horn interference sources.
4.2The BT RF ˈANT0 and ANT1 Pin connect to antenna, please refer to design demand
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