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參數資料
| 型號： | ATN3590-30 |
| 廠商： | SKYWORKS SOLUTIONS INC |
| 元件分類： | 衰減器 |
| 英文描述： | 0 MHz - 40000 MHz RF/MICROWAVE FIXED ATTENUATOR |
| 封裝： | ROHS COMPLIANT PACKAGE-6 |
| 文件頁數： | 4/6頁 |
| 文件大?。?/td> | 314K |
| 代理商： | ATN3590-30 |
DATA SHEET ATN3590 SERIES FIXED ATTENUATORS
Skyworks Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com
4
December 2, 2009 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 200842B
–10
0
–20
–30
–40
–50
–60
–70
–80
0
5
10
15
20
25
30
35
40
Frequency (GHz)
Input
Return
Loss
(dB)
0 dB
6 dB
15 dB
1 dB
7 dB
20 dB
2 dB
8 dB
30 dB
3 dB
9 dB
4 dB
10 dB
5 dB
12 dB
Figure 7. Input Return Loss vs Frequency
–10
0
–20
–30
–40
–50
–60
–70
–80
0
5
10
15
20
25
30
35
40
Frequency (GHz)
Small
Signal
Gain
(dB)
0 dB
6 dB
15 dB
1 dB
7 dB
20 dB
2 dB
8 dB
30 dB
3 dB
9 dB
4 dB
10 dB
5 dB
12 dB
Figure 8. Small Signal Gain vs Frequency
Technical Description
The ATN3590 family of fixed attenuators comprises devices with
nominal attenuation values of 0 to 10 dB (in 1 dB steps), and 12,
15, 20, and 30 dB. These attenuators contain through-wafer vias
that connect the topside ground to the backside metallization of
each die.
The devices with nominal attenuation values of 1 dB or greater
are fabricated using thin film resistors deposited on high
resistivity silicon substrates. The circuit topology is a simple tee
structure that consists of two series resistors and a shunt
resistance, which in this case is realized as a pair of shunt
resistors connected to the node between the two series resistors
(refer to Figures 9 and 10). The resistances of each of these
resistors are selected to simultaneously produce the nominal
attenuation with very good input and output return losses.
The attenuators with nominal attenuation values ≥6 dB contain a
pair of cascaded tee sections (see Figure 11). The 0 dB
attenuator, ATN3590-00, is a 50
Ω microstrip transmission line
with identical foot print and bond pads to those of the other
products in this family.
Die Attachment and Signal Path Connection
Any of the ATN3590 family of attenuators should be mounted on
the ground plane of a transmission medium. The die should be
attached with conductive epoxy or a eutectic solder such as
gold/tin (AuSn).
For good high frequency performance, it is essential that there is
no ground plane directly beneath the series signal path of the
ATN3590. The backside metallization on the die is split into two
regions along the sides of the die to accommodate this
requirement.
R1
R3
R4
R2
Figure 9. Circuit Topology (1 – 5 dB Attenuators)
R1
R4
R2 || R3
Figure 10. Simplified Circuit Topology (1 – 5 dB Attenuators)
R1
R4
R6
R7
R3
R5
R2
Figure 11. Circuit Topology for Attenuators with Nominal
Attenuation ≥6 dB
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