AFEM-S257-TR1G

Manufacturer Part NumberAFEM-S257-TR1G
Description2.5 GHz WiMAX FEM
ManufacturerAvago Technologies US Inc.
Series-
AFEM-S257-TR1G datasheet
 


Specifications of AFEM-S257-TR1G

Rf TypeWiMaxFrequency2.5GHz ~ 2.7GHz
Features-Package / Case*
Lead Free Status / Rohs StatusLead free / RoHS Compliant  
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AFEM-S257
2.5-2.7 GHz WiMAX Coexistence Front End Module
Data Sheet
Description
Avago Technologies AFEM-S257 WiMAX Coexistence
Front End Module (FEM) is designed for mobile and fi xed
wireless data applications in the 2.5 to 2.7 GHz frequency
range. The FEM is optimized for IEEE 802.16 WiMAX modu-
lation. AFEM-S257 exhibits fl at gain and good match while
providing linear power effi ciency to meet stringent mask
conditions and supports two antenna connections for RX
diversity or two simultaneous RX signals.
This module utilizes Avago Technologies proprietary GaAs
pHEMT, and FBAR technology for superior performance
across voltage and temperature levels while providing
excellent out of band rejection. AFEM-S257 is in a 5x7x1
mm MCOB package for space-constrained applications.
Functional Block Diagram
Preselector
ANT-1
T/R-1
ISMN
ANT SW
nfo & OMN
ANT-2
Coex Linear Amplifier
RX Div. TX/
T/R-2
RX Switch
Preselector
Features
 GaAs E-pHEMT, pHEMT and FBAR technology
 50  all RF ports
 Typical Size: 5 x 7 x 1 mm
 3 to 5 V supply (Tx Path)
 Meets 802.16 masks at 24 dBm Pout , 16 QAM WiMAX
with 3.6 V and 420 mA
 16 QAM WiMAX EVM -34 dB (2.5%) at 24 dBm
 TX gain of 34 dB
 PAE of 18% at SEM compliant Pout = 24 dBm
 23 dB TX gain step in low power mode with reduced
Idsq
 Low power Idd, 95 mA at Pout = 0 dBm, 23 dB Gain Step
 35 dBc rejection at WiFi ISM band
 3.5 dB Noise Figure from ANT to RX
RX-1
Coex BPF
 25 dB of TX/RX Isolation
ByPass LNA
 25 dB of Rx1/Rx2 Isolation
T X
Applications
Coex BPF
 Portable and fi xed WiMAX applications
Package Diagram
RX-2
Coex BPF
ByPass LNA
PA_EN
PA_MOD
VREF
LNA2_MOD
TRSW22
1
2
3
4
5
6
7
8
28
29
30
31
32
GND
GND
GND
GND
27
40
41
42
33
GND
GND
GND
GND
26
39
44
43
34
GND
GND
GND
GND
25
38
37
36
35
GND
GND
GND
GND
24
23
22
21
20
19
18
17
16
TOP VIEW
9
VDD2_TX
10
VDD_RX
11
LNA1_MOD
12
ANTSW1
13
ANTSW2
14
15

AFEM-S257-TR1G Summary of contents

  • Page 1

    ... RX signals. This module utilizes Avago Technologies proprietary GaAs pHEMT, and FBAR technology for superior performance across voltage and temperature levels while providing excellent out of band rejection. AFEM-S257 5x7x1 mm MCOB package for space-constrained applications. Functional Block Diagram Preselector ANT-1 ...

  • Page 2

    Electrical Specifi cations Absolute Minimum and Maximum Ratings Table 1. Minimum and Maximum Ratings Parameter Description Supply Voltage Supply Voltage Supply Voltage LNA1 High/Low Gain LNA2 High/Low Gain PA Bias Control PA Mode Control PA Enable Switch Select ANT1 Switch ...

  • Page 3

    Table 2. Recommended Operating Range Parameter Description Pin Supply Voltage VDD1_TX Supply Voltage VDD2_TX Supply Voltage VDD_RX LNA1,2 Low/High Gain LNA1_MODE LNA2_MODE VREF Control VREF PA Mode, PA_MODE PA_Enable Control PA_EN Switch Select ANT1,2 ANTSW1 ANTSW2 Switch Select RX1,TX1 TRSW11 ...

  • Page 4

    All data measured on an FR4 demo board at VDD1_TX = VDD2_TX = 3.6 V, VREF = 2 25°  at all ports. Unless otherwise specifi ed, all data is taken with OFDM 16-QAM ¾ ...

  • Page 5

    ANT1 – RX1 and ANT2 – RX2 Electrical Characteristics Table 4. Electrical Characteristics (25° C, 3.3 V and 50 ) Parameter Input Return Loss Gain Ripple LNA Gain LNA Gain High Gain Mode Total DC Current per Receiver RX Gain ...

  • Page 6

    Table 5. Logic Table LNA1_   PA_EN MODE TX ANT1 LPM ANT1 HPM ANT2 LPM ANT2 HPM H L RX1_ANT1_Hi_Gain L H RX2_ANT2_Lo_Gain RX1_ANT1_Lo_Gain L L RX2_ANT2_Lo_Gain RX2_ANT2_Hi_Gain L L RX1_ANT1_Lo_Gain ...

  • Page 7

    Evaluation Board Description Table 6. Pin Description : Top Bottom Pin No. Function Pin No. 1 VDD2_TX 2 3 VDD_RX 4 5 VDD1_TX 6 7 ANTSW1 8 9 PAMODE 10 11 TRSW12 12 13 TRSW22 14 15 VREF 16 17 ...

  • Page 8

    Figure 2. Front of Demoboard 8 Table 9. Eval Board Confi guration: Jumper Position Function   PA_EN PA_Enable   PA_MODE High Power Mode   LNA1MODE LNA1 = High Gain   LNA2MODE LNA2 = Low Gain Note: ...

  • Page 9

    ... Application Circuit AFEM-S257 VDD_RX R22 100 VCTRL 1 2 PAEN 3 4 PAMODE 5 6 LNA1MODE 7 8 LNA2MODE JP4-7 R21 R20 R19 R18 10K 10K 10K 10K R16 3.3 K ANTSW2 TRSW22 JP2 JP3 VCTRL 2 VCTRL 1 1 R13 3.3 K TRSW21 ANTSW1 R15 3.3 K TRSW12 JP1 ...

  • Page 10

    ... AVAGO AFEM-S257 PYYWW XXXXX P : Manufacturing Site Code YYWW : Build Work Year and Work Week XXXX : Production Lot Code Figure 5. Package dimensions 0. 0.70 13 5.10 4. 3.10 0. 5.60 TOP VIEW SOLDERMASK Figure 6. Recommended Soldermask 10 1.00 ±0.10 5.00 5.00 0.30 0.90 0.64 TYPICAL Note: There is no Solder Mask at the bottom layer ...

  • Page 11

    Handling and Storage smax T smin t s Preheat 25 t 25° Peak Typical SMT Refl ow Profi le for Maximum Temperature = 260 +0/-5° C Profi le Feature Average ramp-up rate (TL ...

  • Page 12

    Device Orientation REEL USER FEED COVER TAPE DIRECTION Tape Dimensions 8.00 ±0.10 (0.315 ±0.004) 4.00 ±0.10 (0.157 ±0.004) 0.318 ±0.13 (0.0125 ±0.0005) 8° MAX 5.33 ±0.10 (0.065 ±0.004) (0.210 ±0.004 CARRIER TAPE 5.0 mm 7.0 mm 1.50 ±0.10 ...

  • Page 13

    Reel Information FRONT VIEW T Tape Start Slot CCD/KEAC 6 MADE IN MALAYSIA PS 20.2 Min 330 Max Diameter BACK VIEW CCD/KEAC 6 MADE IN MALAYSIA PS TAPE WIDTH +2 ±0.50 16.4 22.4 Max ...

  • Page 14

    ... AFEM-S257 Part Number Ordering Information Devices Part Number Per Container AFEM-S257-BLKG 100 AFEM-S257-TR1G 1000 AFEM-S257-TR2G 3000 For product information and a complete list of distributors, please go to our web site: Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries. ...