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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
J1 RF GND J2 CBL V2
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
CBP
4
CBL
V1
10 k
3
VS
Description
The AA103-72 is a 1-bit GaAs IC FET digital attenuator in a lowcost 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 applications include cellular radio, wireless data, and wireless local loop gain level control circuits.
DC blocking capacitors (CBL), bypass capacitor (CBP), and biasing resistor must be supplied externally for positive voltage operation. CBL, CBP = 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 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
DATA SHEET * AA103-72, AA103-72LF
Operating Characteristics at 25 C (0, 3 V)
Parameter Switching characteristics(1) Rise, fall On, off Video feedthru Input power for 1 dB compression Intermodulation intercept point (IP3) Condition 10/90% or 90/10% RF 50% CTL to 90/10% RF TRISE = 1 ns, BW = 500 MHz VS = 3 V VS = 5 V For two-tone input power 10 dBm VS = 3 V VS = 5 V VLOW = 0 to 0.2 V VHIGH = 3 V @ 25 A typ. to 5 V @ 50 A typ. 0.5-2.5 GHz 0.5-2.5 GHz 0.5-2.5 GHz 0.5-2.5 GHz Frequency Min. Typ. 150 300 70 20 26 41 45 Max. Unit ns ns mV dBm dBm dBm dBm
Control voltages
1. Switching characteristics will vary with value chosen for CBP.
Typical Performance Data (0, 3 V)
1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0 0.5 1.0 1.5 2.0 2.5 1.8 1.7 1.6 1.5
Insertion Loss (S21, dB)
VSWR
1.4 1.3 1.2 1.1 1.0 0 0.5 1.0 1.5 2.0 2.5
Frequency (GHz)
Frequency (GHz)
Insertion Loss vs. Frequency
13 12
VSWR vs. Frequency
Attenuation (S21, dB)
11 10 9 8 7 0 0.5 1.0 1.5 2.0 2.5
Frequency (GHz)
Attenuation vs. Frequency
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 2
April 30, 2007 * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * 200199 Rev. B
DATA SHEET * AA103-72, AA103-72LF
Absolute Maximum Ratings
Characteristic RF input power Supply voltage Control voltage Operating temperature Storage temperature Value 1 W > 500 MHz 0/8 V 0.5 W @ 50 MHz 0/8 V 8V -0.2 V, +8 V -40 C to +85 C -65 C to +150 C
Truth Table
V1 VHIGH 0
All other conditions not recommended. VHIGH = 3 to 5 V (VS = VHIGH 0.2 V).
V2 0 VHIGH
J1-J2 Insertion Loss Attenuation
SOT-5
0.074 (1.90 mm) Ref. 0.069 (1.75 mm) 0.052 (1.30 mm) Pin 1 0.020 (0.51 mm) 0.014 (0.35 mm) 0.012 (0.30 mm) 0.000 (0.00 mm) Min. 0.064 (1.63 mm) 0.035 (0.90 mm) 0.118 (3.00 mm) 0.087 (2.20 mm)
Performance is guaranteed only under the conditions listed in the specifications table and is not guaranteed under the full range(s) described by the Absolute Maximum specifications. Exceeding any of the absolute maximum/minimum specifications may result in permanent damage to the device and will void the warranty.
CAUTION: Although this device is designed to be as robust as possible, ESD (Electrostatic Discharge) can damage this device. This device must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body or equipment, which can discharge without detection. Industry-standard ESD precautions must be employed at all times.
0.037 (0.95 mm) Ref. 0.012 (0.30 mm) Typ. 0.024 (0.61 mm) 0.004 (0.10 mm)
Recommended Solder Reflow Profiles
Refer to the "Recommended Solder Reflow Profile" Application Note.
0.122 (3.10 mm) 0.106 (2.70 mm)
0.0104 (0.26 mm) 0.0035 (0.09 mm) Min.
Tape and Reel Information
Refer to the "Discrete Devices and IC Switch/Attenuators Tape and Reel Package Orientation" Application Note.
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
3
DATA SHEET * AA103-72, AA103-72LF
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Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 4
April 30, 2007 * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * 200199 Rev. B

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