SKY12322-86LF Datasheet, PDF (5/6 Pages) Skyworks Solutions Inc. – GaAs Digital Attenuator 500 MHz-4 GHz 5 Bits, 0.5 dB LSB

DATA SHEET • SKY12322-86LF
Evaluation Board
The evaluation board for SKY12322-86 allows the part to be fully
exercised. The RF signal may be applied to J₁ or to J₂ without
change in performance. The supply voltage (V_S) is applied to pin 6
via R₁. DC blocking capacitors (C₁ and C₂) are required at the RF
ports. The values of R₁, C₁ and C₂ are shown in Evaluation Board
Components Table.
The attenuation produced by the SKY12322-86 is determined by
the voltages applied to the high impedance control voltage ports V₁
through V₅. Each control voltage port determines whether its asso-
ciated attenuation bit, as listed in the Truth Table, is switched into
or out of the RF signal path. Each of these control voltage ports
must be held at 0 V (V_LOW) or at V_S ± 0.2 V (V_HIGH). The supply
voltage must be within 0.2 V of V_HIGH or damage may result. Any
combination of V_HIGH and V_LOW may be applied to ports V₁ through
V₅. For example, if the desired attenuation value is 5.5 dB, V_LOW is
applied to the 0.5 dB, 1 dB and 4 dB voltage control ports, which
are V₁, V₂ and V₄, respectively. V_HIGH is applied to the remaining
voltage control ports to ensure that their attenuation bits are not
switched in to the RF signal path.
Evaluation Circuit PCB
V5 V4 V3 V2 V1
54321
SKY12322-86
6 7 8 9 10
C2
J2
C1
J1
R1
VS
Evaluation Board Components
Component
C₁, C₂
R₁
U₁
J₁, J₂
Description
DC blocking capacitor
RF block
GaAs digital attenuator
SMA connectors
Default
47 pF, size 0402
10k Ω, size 0402
Recommended Solder Reflow Profiles
Refer to the “Recommended Solder Reflow Profile”
Application Note.
Tape and Reel Information
Refer to the “Discrete Devices and IC Switch/Attenuators
Tape and Reel Package Orientation” Application Note.
MSOP-10
Pin 10
Pin 1
Indicator
Pin 1
0.118 (3.00 mm)
± 0.006 (0.15 mm)
0.193
(4.90 mm)
± 0.006
(0.15 mm)
0.034
(0.86 mm)
± 0.004
(0.10 mm)
0.0197
(0.500 mm)
BSC
0.009 (0.23 mm)
Ref.
0.043
(1.09 mm)
Max.
0.006 (0.15 mm) Max.
0.002 (0.05 mm) Min.
0.118 (3.00 mm)
± 0.006 (0.15 mm)
8˚–16˚
0˚–6˚
0.022 (0.55 mm)
± 0.006 (0.15 mm)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
200273 Rev. B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • July 31, 2006
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