ATF-521P8-BLK View Datasheet(PDF) - Avago Technologies
Part Name
Description
MFG CO.
ATF-521P8-BLK
Avago Technologies
'ATF-521P8-BLK' PDF : 23 Pages View PDF
20
45
Gain
15
40
10
35
5
30
NF
0
1.6
1.8
2.0
2.2
2.4
2.6
FREQUENCY (GHz)
FigFiugruere1155. .GGaaininaannddNNooise Figguurreevvss.. Frequency.
Frequency.
Input and output return loss are both greater that 10 dB.
Although somewhat narrowband, the response is ad‑
equate in the frequency range of 2110 MHz to 2170 MHz
for the WCDMA downlink. If wider band response is
need, using a balanced configuration improves return
loss and doubles OIP3.
0
S11
-5
-10
S22
-15
1.6
1.8
2.0
2.2 2.4
2.6
FREQUENCY (GHz)
FiguFirgeu1re6.16I.npInuptuat nanddOOuuttpuuttRReettuurnrnLoLsosssvsv.s. Frequency.
Frequency.
Perhaps the most critical system level specification for
the ATF‑521P8 lies in its distortion-less output power.
Typically, amplifiers are characterized for linearity by
measuring OIP3. This is a two-tone harmonic measure‑
ment using CW signals. But because WCDMA is a modu‑
lated waveform spread across 3.84 MHz, it is difficult
to correlated good OIP3 to good ACLR. Thus, both are
measured and presented to avoid ambiguity.
25
2060 2080 2100 2120 2140 2160 2180 2200
FREQUENCY (MHz)
FigFiugruere1177..OOIPIP33vvss..FFrreequueennccyyininWWCCDDMMAA Band (Pout = 12 dBm).
Band (Pout = 12 dBm).
-30
-35
-40
-45
-50
-55
-60
-65
-3
2
7
12
17
22
Pout (dBm)
FigFiugruere1188.. AACCLLRRvvss.. Pouttaatt55MMHHzzOOffsffeste. t.
C1=1.2 pF Phycomp 0402CG129C9B200
C2,C8=1.5 pF Phycomp 0402CG159C9B200
C3=4.7 pF Phycomp 0402CG479C9B200
C4,C6=.1 µF Phycomp 06032F104M8B200
C5=1 µF
AVX 0805ZC105KATZA
C7=150 pF Phycomp 0402CG151J9B200
L1=1.0 nH TOKO LL1005-FH1n0S
L2=12 nH TOKO LL1005-FS12N
L3=39 nH TOKO LL1005-FS39
L4=3.9 nH TOKO LL1005-FH3N9S
R1=49.9Ω RohmRK73H1J49R9F
R2=383Ω Rohm RK73H1J3830F
R3=2.37Ω Rohm RK73H1J2R37F
R4=61.9Ω Rohm RK73H1J61R9F
R5=10Ω
Rohm RK73H1J10R0F
R6=1.2Ω
Rohm RK73H1J1R21F
Q1, Q2
Philips BCV62B
J1, J2
142-0701-851
Table 2. 2140 MHz Bill of Material.
19
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