AFEM-S257-TR1G Avago Technologies US Inc., AFEM-S257-TR1G Datasheet - Page 7

• Manufacturer Part Number: AFEM-S257-TR1G
• Description: 2.5 GHz WiMAX FEM
• Manufacturer: Avago Technologies US Inc.
• Series: -r

Specifications of AFEM-S257-TR1G

• Rf Type: WiMax
• Frequency: 2.5GHz ~ 2.7GHz
• Features: -
• Package / Case: *
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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.