6 of 14
RF5388
Preliminary
Rev A1 DS071026
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
Pin
Function
Description
Interface Schematic
1LNA VCC
5GHz LNA input voltage supply.
2GND
Ground connection.
3GND
Ground connection.
4PA EN_g
Bias voltage for the 802.11b/g PA. Internally decoupled port with approximately
100pF.
5GND
Ground connection.
6TX_g
RF input for the 802.11b/g PA. Input is matched to 50
Ω and DC block is pro-
vided internally.
7GND
Ground connection.
8TX_a
TX RF input for the 802.11a PA. Input is matched to 50
Ω and DC block is pro-
vided internally.
9GND
Ground Connection.
10
PA EN_a
Bias voltage for the 802.11a PA. Internally decoupled port with approximately
100pF.
11
GND
Ground connection.
12
GND
Ground connection.
13
GND
Ground connection.
14
VCC_g
Supply voltage for the 11b/g amplifier. Requires external decoupling capacitors
for best performance.
15
VCC_a
Supply voltage for the 11a amplifier. Requires external decoupling capacitors
for best performance.
16
VCC_g
Supply voltage for the 11b/g amplifier. Requires external decoupling capacitors
for best performance.
17
VCC_a
Supply voltage for the 11a amplifier. Requires external decoupling capacitors
for best performance.
18
VCC_a
Supply voltage for the 11a amplifier. Requires external decoupling capacitors
for best performance.
19
PDET_a
Power detector voltage for the 802.11a PA. Pdetect voltage varies with output
power. May need external decoupling capacitor for module stability. May need
resistive voltage divider to bring output voltage to desired level.
20
PDET_g
Power detector voltage for the 802.11b/g PA. Pdetect voltage varies with output
power. May need external decoupling capacitor for module stability. May need
resistive voltage divider to bring output voltage to desired level.
21
GND
Ground connection.
22
GND
Ground connection.
23
NC
No Connect.
24
GND
Ground connection.
25
VCC_g
Supply voltage for the 11b/g amplifier. Requires external decoupling capacitors
for best performance.
26
VCC_g
Supply voltage for the 11b/g amplifier. Requires external decoupling capacitors
for best performance.
27
SW1
Switch control port. (See Switch Truth table.)
28
ANT
Antenna port. This port is matched to 50
Ω and DC block is not provided inter-
nally.
29
GND
Ground connection.
30
NC
No Connect.
31
SW2
Switch control port. (See Switch Truth table.)
32
GND
Ground connection.
33
GND
Ground connection.
34
GND
Ground connection.
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