PFM19030F View Datasheet(PDF) - Cree, Inc
Part Name
Description
MFG CO.
'PFM19030F' PDF : 15 Pages View PDF
PFM19030
similar bias conditions for Sense and RF FETs. The disadvantage of this design is its relative complexity and
the incorporation of operational amplifiers, for which stability is potentially circuit layout dependent.
Parts List for Cree Microwave Test Fixture
Designator
Description
Qty
C2
CAP, 1.2 PF±0.1 pF, 0603, ATC 600S
1
C3
CAP, 2.0 PF±0.1 pF, 0603, ATC 600S
1
C5
CAP, 1.8 PF±0.1 pF, 0603, ATC 600S
1
C4
CAP, 4.7 PF±0.1 pF, 0603, ATC 600S
1
C6
CAP, 3.0 PF±0.1 pF, 0603, ATC 600S
1
C1, C7, C19, C20
CAP, 27 PF±5%, 0603, ATC 600S
4
C10, C13, C14, C15, CAP, 27 PF±5%, 100V (min), 0603, any vendor.
4
C8, C11, C16, C21 CAP, 470 PF ±10%,100 V, 0603, any vendor.
4
C22
CAP, 3300 PF±10%, 100 V, 0603, Murata GRM39X7R332K100
1
C9, C23, C17, C12 CAP, 15000 PF±10%, 100 V, 0805, MurataGRM40X7R153K100
4
C18, C24, C25, C26, CAP, 150000 1206, 50V, X7R, 10%
6
C31, C34
Murata GRM42-6-X7R-154-K-050-A-L
C27, C37
CAP, 2.2uf SMT TANTALUM, 50V
2
C28
CAP, 47UF, 50V, ELECTR SMT
1
C33, C35
CAP, 18,000 PF ±10%,100 V, 0603
2
C32, C36
CAP, 33,000 PF ±10%,100 V, 0603
2
C40, C41, C42, C43 CAP, 1000 PF ±10%,100 V, 0603.
4
R1
RES, 1/16W, 0603, 1000 ohms, 5%
1
R2
RES, 1/16W, 0805, 124 Ohms, 5%
1
R11, R12
RES, 1/16W, 0603, 332 Ohms, 1%
2
R31, R32
RES, 1/16W, 0603, 147 Ohms, 1%
2
R13, R14, R33, R34 RES, 1/16W, 0603, 2370 Ohms, 1%
4
R16, R15, R35, R36 RES, 1/16W, 0603, 511 KOhms, 1%
4
R19, R39
RES, 1/16W, 0603, 100 KOhms, 5%
2
R18
RES, 1/16W, 0603, 3320 Ohms, 5%
1
R38
RES, 1/16W, 0603, 2000 Ohms, 5%
1
R20, R40
RES, 1/8W, 1206, 1000 Ohms, 5%
2
R17, R37
RES, potentiometer, 10 Kohms, Digikey SM4W103-ND, 11T
2
RZ_FS1, RZ_FS2
RES, 1/16W, 0805, 0 Ohms (used as jumpers, demo fixture only)
2
D1, D2
Zener diode, 6.2 V, Digikey PN BZT52C6V27DICT-ND
2
S1, S2
SPST Switch, Digikey PN CKN1100CT-ND
2
U1, U2
Op Amp, High Output, LM8261M5 (5 pin, SOT23 package)
2
It is also possible to bias the two stages in a conventional manner, with the two tracking FET drains left
unused (floating or grounded). The above bias circuits are just two of several possibilities.
Page 13 of 15 Specifications subject to change without notice. U.S. Patent No. 6,822,321
http://www.cree.com/
Rev. 2
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