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DATA SHEET
SKY12146-321, SKY12146-321LF: GaAs IC 25 dB Voltage Variable Attenuator 2.7-4 GHz
Features
Power control for 3.5 GHz fixed wireless applications G Minimum 25 dB attenuation G Positive 0.2-1.2 V control voltage G QFN-12 3 x 3 mm package G Low cost G No external components needed G Available lead (Pb)-free and RoHS-compliant MSL-1 @ 260 C per JEDEC J-STD-020
G
Pin Out
N/C N/C
11 12 10
J1 N/C N/C
N/C
1 2 3
9 8 7
J2 N/C N/C
5
N/C
4
Description
The SKY12146-321 is a GaAs IC PHEMT voltage variable attenuator that has been designed for WLAN applications. Operating from 2.7-4 GHz, the SKY12146-321 is ideal for low-cost applications such as 3.5 GHz fixed wireless LAN power control applications.
Ground is connected to paddle on bottom.
NEW
Skyworks offers lead (Pb)-free, RoHS (Restriction of Hazardous Substances)-compliant packaging.
Electrical Specifications at 25 C
ZO = 50 , unless otherwise noted
Parameter Insertion loss (VC = 1.2 V) Maximum attenuation (VC = 0.2 V) VSWR -- all ports Frequency 2.7-4 GHz 2.7-4 GHz 2.7-4 GHz 22 Min. Typ. 1.5 25 1.5 1.8 Max. 1.8 Unit dB dB
Operating Characteristics at 25 C (0, 1.2 V)
ZO = 50 , unless otherwise noted
Parameter Switching characteristics Rise, fall On, off Video feedthru Maximum input power for < 1 dB attenuation variation Input 3rd order intercept point (IIP3) Control voltage 10/90% or 90/10% RF 50% CTL to 90/10% RF TRISE = 1 ns, BW = 500 MHz 2.7-4 GHz 2.7-4 GHz 0.2 50 150 25 13 20 1.2 ns ns mV dBm dBm V Condition Frequency Min. Typ. Max. Unit
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200270 Rev. C * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * May 31, 2007
VC
N/C
6
1
DATA SHEET * SKY12146-321, SKY12146-321LF
Typical Performance Data at 25 C
ZO = 50 , unless otherwise noted
-1.0 -1.1 -1.2 0 -5 -10 -15 -20 -25 -30 -35 -40 -45 2.8 3.0 3.2 3.4 3.6 3.8 4.0 -50 2.8 3.0 3.2 3.4 3.6 3.8 4.0 0V 0.2 V
Insertion Loss (dB)
-1.3 -1.5 -1.6 -1.7 -1.8 -1.9 -2.0
Frequency (GHz)
Attenuation (dB)
-1.4
Insertion Loss vs. Frequency
0 -5 -10 -5 0
Frequency (GHz)
Attenuation (dB)
Return Loss (dB)
-15 -20 -25 -30 -35 -40 -45 -50 0 0.2 0.4 0.6 0.8 1.0 1.2
-10 Minimum Attenuation -15 -20 -25 -30 2.8 Maximum Attenuation
3.0
3.2
3.4
3.6
3.8
4.0
Control Voltage (V)
Frequency (GHz)
Attenuation vs. Control Voltage
Input Return Loss vs. Frequency
0 -5 -10 -15 -20 -25 -30 -35 -40 -45 -50 2.8 3.0 3.2 3.4 3.6 3.8 4.0 Maximum Attenuation Minimum Attenuation
22
21
Return Loss (dB)
IIP3 (dBm)
20
19
18 2.8 3.0 3.2 3.4 3.6 3.8 4.0
Frequency (GHz)
Frequency (GHz)
Output Return Loss vs. Frequency
Input IP3 vs. Frequency
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 2
May 31, 2007 * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * 200270 Rev. C
DATA SHEET * SKY12146-321, SKY12146-321LF
Absolute Maximum Ratings
Characteristic RF input power Control voltage Operating temperature Storage temperature Value 1 W max. -0.2 V, +6 V -40 C to +85 C -65 C to +150 C
Evaluation Board Layout
SK39506 VVA Test Board
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.
Recommended Solder Reflow Profiles
Refer to the "Recommended Solder Reflow Profile" Application Note.
QFN-12
0.118 (3.00 mm) Pin 1 Indicator 0.118 (3.00 mm) 0.008 (0.20 mm) Seating Plane 0.001 (0.02 mm)
Tape and Reel Information
Refer to the "Discrete Devices and IC Switch/Attenuators Tape and Reel Package Orientation" Application Note.
Package Marking
Pin 1 Indicator 0.029 (0.73 mm) Exposed pad 0.009 (0.23 mm) + 0.003 (0.07 mm) - 0.002 (0.05 mm) Date Code YY = Calendar Year WW = Week
0.030 (0.75 mm) 0.002 (0.05 mm) 0.017 (0.435 mm) Sq. Pin 1 Indicator
0.007 (0.180 mm)
Skyworks Part No. Lot Number
S146 XXXX YYWW
Top View
0.057 (1.45 mm) Sq. + 0.004 (0.10 mm) - 0.006 (0.15 mm)
0.0196 (0.50 mm) BSC
0.022 (0.55 mm) 0.004 (0.10 mm)
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200270 Rev. C * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * May 31, 2007
3
DATA SHEET * SKY12146-321, SKY12146-321LF
Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. ("Skyworks") products or services. These materials, including the information contained herein, are provided by Skyworks as a service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the information contained herein. Skyworks may change its documentation, products, services, specifications or product descriptions at any time, without notice. Skyworks makes no commitment to update the materials or information and shall have no responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from any future changes. No license, whether express, implied, by estoppel or otherwise, is granted to any intellectual property rights by this document. Skyworks assumes no liability for any materials, products or information provided hereunder, including the sale, distribution, reproduction or use of Skyworks products, information or materials, except as may be provided in Skyworks Terms and Conditions of Sale. THE MATERIALS, PRODUCTS AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING FITNESS FOR A PARTICULAR PURPOSE OR USE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT; ALL SUCH WARRANTIES ARE HEREBY EXPRESSLY DISCLAIMED. SKYWORKS DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. SKYWORKS SHALL NOT BE LIABLE FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO ANY SPECIAL, INDIRECT, INCIDENTAL, STATUTORY, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THE MATERIALS OR INFORMATION, WHETHER OR NOT THE RECIPIENT OF MATERIALS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. Skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, or other equipment in which the failure of the Skyworks products could lead to personal injury, death, physical or environmental damage. Skyworks customers using or selling Skyworks products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any damages resulting from such improper use or sale. Customers are responsible for their products and applications using Skyworks products, which may deviate from published specifications as a result of design defects, errors, or operation of products outside of published parameters or design specifications. Customers should include design and operating safeguards to minimize these and other risks. Skyworks assumes no liability for applications assistance, customer product design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters. Skyworks, the Skyworks symbol, and "Breakthrough Simplicity" are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands and names are for identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by reference.
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 4
May 31, 2007 * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * 200270 Rev. C

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