DATA SHEET
AA103-72, AA103-72LF: GaAs IC 1-Bit Digital Attenuator
10 dB LSB LF–2.5 GHz
Features
G
G
G
G
G
Pin Out
J
1
RF GND
J
2
C
BL
V
2
Attenuation cutback of 10 dB
Single positive 3 V control
Low loss
Low-cost SOT-5 plastic package
Available lead (Pb)-free and RoHS-compliant MSL-1 @ 260 °C
per JEDEC J-STD-020
1
2
10
5
C
BP
4
C
BL
V
1
10 kΩ
3
V
S
Description
The AA103-72 is a 1-bit GaAs IC FET digital attenuator in a low-
cost package. This attenuator has an LSB of 10 dB. The AA103-72
is particularly suited where high attenuation accuracy, low insertion
loss, and low intermodulation products are required. Typical appli-
cations include cellular radio, wireless data, and wireless local loop
gain level control circuits.
DC blocking capacitors (C
BL
), bypass capacitor (C
BP
), and biasing resistor must be supplied
externally for positive voltage operation.
C
BL
, C
BP
= 33 pF for operation @ 900 MHz.
NEW
Skyworks offers lead (Pb)-free, RoHS (Restriction of
Hazardous Substances)-compliant packaging.
Electrical Specifications at 25 °C (0, 3 V)
Parameter
(1)
Insertion
loss
(2)
Frequency
LF–0.5 GHz
LF–1.0 GHz
LF–2.5 GHz
LF–1.0 GHz
LF–2.5 GHz
VSWR (I/O)
1. All measurements made in a 50
Ω
system, unless otherwise specified.
2. Insertion loss changes by 0.003 dB/°C.
3. Maximum attenuation includes insertion loss.
Min.
Typ.
0.3
0.3
0.4
10
Max.
0.5
0.6
0.7
Unit
dB
dB
dB
dB
dB
dB
Attenuation range
Attenuation
accuracy
(3)
± (0.25 + 3% of
Attenuation setting)
± (0.4 + 5% of
Attenuation setting)
1.2:1
1.4:1
LF–2.5 GHz
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
200199 Rev. B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • April 30, 2007
1
SKYWORKS [ SKYWORKS SOLUTIONS INC. ]
