AFEM-S257-BLKG Avago Technologies US Inc., AFEM-S257-BLKG Datasheet - Page 7
AFEM-S257-BLKG
Manufacturer Part Number
AFEM-S257-BLKG
Description
2.5 GHz WiMAX FEM
Manufacturer
Avago Technologies US Inc.
Series
-r
Datasheet
1.AFEM-S257-BLKG.pdf
(14 pages)
Specifications of AFEM-S257-BLKG
Rf Type
WiMax
Frequency
2.5GHz ~ 2.7GHz
Features
-
Package / Case
*
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Evaluation Board Description
Table 6. Pin Description
Table 7. TX Typical Test Conditions:
Table 8. RX Typical Test Conditions:
7
Top
Pin No.
1
3
5
7
9
11
13
15
17
19
TX ANT1
PIN
VDD1,2_TX
PA_MODE
VREF
PA_EN
ANTSW1,2
TRSW12,11,22,21
ANT1 RX1 ANT2 RX2
PIN
VDD_RX
LNA1_MODE
LNA2_MODE
VREF
ANTSW1,2
TRSW12,11,22,21
Function
VDD2_TX
VDD_RX
VDD1_TX
ANTSW1
PAMODE
TRSW12
TRSW22
VREF
LNA1_MODE
LNA2_MODE
HPM
3.6 V
3.0 V
2.8 V
3.0 V
H
H
HG
3.3 V
3.0 V
3.0 V
2.8 V
X
L
:
L
H
Bottom
Pin No.
2
4
6
8
10
12
14
16
18
20
LPM
3.6 V
0 V
2.8 V
3.0 V
L
H
LG
3.3 V
0 V
0 V
2.8 V
X
L
L
H
Function
VDD2_Sense
GND
GND
GND
TRSW11
TRSW21
PA_EN
GND
GND
ANTSW2
Function
Battery
Low Power Mode
Bias Control
PA Enable
ANT Select
RX/TX Select
Function
Battery
LNA1 Control
LNA2 Control
Bias Control
ANT Select
RX/TX Select
Recommended turn on sequence
Apply VDD1_TX and VDD2_TX
Apply VDD_RX
Apply VREF
Apply TRSW11,12,21 and 22
Apply ANTSW1 and ANTSW2
Apply PA_EN
For TX HPM Apply PAMOD HI
For TX LPM Apply PAMOD LO
For RX HG Apply LNA1,2 Mode HI
For RX LG Apply LNA1,2 Mode LO
Apply RF Input not to exceed 10 dBm
Turn off in reverse order
Figure 1. Pins on back of Demoboard
Notes:
VDD1_TX, VDD2_TX can be tied together to reduce supply voltages, but
VREF needs to be a regulated voltage which is optimized for 2.8 V at VDD
of 3.6 V.
PA_EN and PAMODE are CMOS compatible pin; however, this can be
driven with 3 V0 for logic high.
Use jumpers on eval board to set control signal for desired mode of
operation.