©2004 Fairchild Semiconductor Corporation RMPA5251 Rev. D
RMPA5251
RMPA5251 5.15 to 5.85 GHz Operation Eval Board BOM (High Band)
Evaluation Board Layout
Evaluation Board Operation
Recommended turn-on sequence:
1) Connect RF ports J1, J2 to RF test equipment.
2) Connect common ground terminal to the Ground (GND) pin on the board.
3) Connect logic control pin VL to positive supply.
4) Connect terminals VC1, VC2 and VC3 together and connect to positive supply (VC).
5) Connect terminals VM1, VM2 and VM3 together and connect to positive supply (VM).
6) Connect voltmeter to Detector Output, pin DT1.
7) Connect pin DT2 to ground.
8) Apply high voltage of +2.4V to logic control pin VL. (On)
9) Apply positive voltage of 3.3V to VC1, VC2 and VC3 (first, second and third stage collector).
10) Apply positive voltage of 3.3V to VM1, VM2 and VM3 (bias networks)
2
.
11) At this point, you should expect to observe the following positive currents flowing into the pins:
No. Ref Value Unit Qty Size Description MFG Part No. Comments
1 C1,C2 10 µF 2 0805 10 µF Capacitor Murata GRM21BR60J106K Decoupling
Capacitor
2 C4 100 pF 1 0402 100 pF Capacitor Murata GRM1885C1H101JA01D Detector
Capacitor
3 R1,R2 10K
Ω
2 0402 10 K
Ω
Resistor IMS RCI-0402-1002J Detector Resistor
4 L1,L3 10 nH 2 0402 10 nH Inductor Toko LLV1005FB10NJ RF Choke
5 L2 15 nH 1 0402 15 nH Inductor Toko LLV1005FB15NJ RF Choke
6 B1 1 Fixture Board Crown Circuits G657432
7 J1,J2 2 Jack End Launch
SMA
Johnson
Components
142-0701-841
8 J3 11 Right Angle Single
Header
Digikey S1322-12-ND
9 A1 1 Packaged MMIC Fairchild RMPA5251
Pin Current
VL ~150 µA
VC (Total) ~184 mA
VM (Total) ~16 mA
Actual Board Size = 2.0" x 1.5"
J1
J2
J3
A1
= component
= Jumper/short connection
L3
L2
C3
C1
C2
R1
C4
L1
R2
* VL is labeled P1 on Eval Board
*
VL
Not Used
