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DATA SHEET
AA109-310, AA109-310LF: GaAs IC 5-Bit Digital Attenuator With Serial-to-Parallel Driver 0.5-2.5 GHz
Features
Positive voltage operation (5 V) G QFN 5 x 5 mm leadless package G Integrated silicon serial-to-parallel driver G Attenuation 1 dB steps to 31 dB G Available lead (Pb)-free and RoHS-compliant MSL-1 @ 260 C per JEDEC J-STD-020
G
Simplified Schematic
VSS VDD J2
SERDATAOUT
16 dB
Description
The AA109-310 is a GaAs FET IC 5-bit digital attenuator with a serial-to-parallel driver packaged in a 32-leadless exposed pad plastic package. It is particularly suited where high attenuation accuracy, low insertion loss, and low intermodulation products are required. Typical applications include base station, wireless and wireless local loop gain control circuits.
LATCH ENABLE
Serial to Parallell Driver
SERDATAIN
8 dB
4 dB
CLOCKIN
2 dB
RESET
1 dB
NEW
Skyworks offers lead (Pb)-free, RoHS (Restriction of Hazardous Substances)-compliant packaging.
C1
C2
J1
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200204 Rev. D * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * April 30, 2007
1
DATA SHEET * AA109-310, AA109-310LF
Electrical Specifications at 25 C
VDD = 5 V, Z0 = 50 , unless otherwise specified
Parameter Insertion loss Condition Frequency 0.5-1.0 GHz 1.0-2.0 GHz 2.0-2.5 GHz 0.5-1.0 GHz 1.0-2.0 GHz 2.0-2.5 GHz VSWR (I/O) Switching characteristics Rise, fall On, off Video feedthru Input power for 1 dB compression Intermodulation intercept point (IP3) 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 +5 dBm VS = 3 V VS = 5 V 0.9-2.5 GHz 0.9-2.5 GHz 0.9-2.5 GHz 0.9-2.5 GHz 0.5-2.5 GHz Min. Typ. 2.0 2.7 3.1 31 (0.2 + 3% of attenuation setting in dB) (0.3 + 5% of attenuation setting in dB) (0.3 + 6% of attenuation setting in dB) 1.5:1 100 300 70 21 27 41 45 2.2:1 s s mV dBm dBm dBm dBm Max. 2.4 3.1 3.6 Unit dB dB dB dB dB dB dB
Attenuation range(1, 2) Attenuation accuracy(1, 2)
1. Attenuation value referenced above insertion loss. 2. Exposed pad must be connected to RF ground to obtain specified attenuation.
DC Electrical Characteristics at 25 C (VDD = 5 V)
Parameter Input voltage high Input voltage low Input leakage current Quiescent current Supply voltages Symbol VIH (1) VIL (0) IL IDD VDD 0 Min. Typ. 3.5 0.5 0.5 500 5 Max. 5 Unit V V A A V
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. * 200204 Rev. D
DATA SHEET * AA109-310, AA109-310LF
Typical Performance Data (VDD = 5 V, Z0 = 50 )
0 -0.5 2.2 16 dB 2.0 8 dB 1.8 31 dB
Insertion Loss (dB)
-1.0
VSWR
-1.5 -2.0 -2.5 -3.0 -3.5 0 0.5 1.0 1.5 2.0 2.5
1.6 1.4 1.2 1.0 0 2 dB 1 dB Ins. Loss 0.5 1.0 1.5 2.0 2.5
4 dB
Frequency (GHz)
Frequency (GHz)
Insertion Loss vs. Frequency
1.0 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1.0 0 0.5 1.0 1.5 2.0 2.5 1 dB 4 dB 2 dB 31 dB 8 dB 16 dB
VSWR vs. Frequency
Absolute Maximum Ratings
Characteristic Supply voltage (VDD) Input voltage (VI) Power dissipation (PD) Storage temperature (TST) Operating temperature (TOP) Value -0.5 to +6 V -0.5 - VCC + 0.5 V 500 mW -65 C to +150 C -40 C to +85 C
Deviation from Nominal Attenuation (dB)
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.
Frequency (GHz)
Attenuation Accuracy vs. Frequency
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.
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200204 Rev. D * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * April 30, 2007
3
DATA SHEET * AA109-310, AA109-310LF
Surface Mount Land Pattern
5 x 5 mm QFN 32-Lead
0.020 (0.50 mm) 0.013 (0.33 mm) 0.020 (0.50 mm)
Truth Table
Serial Data Input Reset 1 1 1 1
0.122 (3.10 mm) Sq.
1 dB 1 0 1 1 1 1 0 X
2 dB 1 1 0 1 1 1 0 X
4 dB 1 1 1 0 1 1 0 X
8 dB 1 1 1 1 0 1 0 X
16 dB 1 1 1 1 1 0 0 X
J1-J2 Attenuation Insertion Loss 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB 31 dB
1 1 1 0
0.020 (0.50 mm) 0.020 (0.50 mm) Dimensions in inches (mm).
VIL (0) = 0 to 0.5 V. VIH (1) = 3.5 to 5 V. X = Don't Care.
Pin Out
0.197 (5.00 mm) BSC Pin 1 Indicator
32 1
0.039 (1.00 mm) Max. 0.187 (4.75 mm) BSC 0.197 (5.00 mm) BSC 12 Max. 0.001 (0.025 mm) Pin 32 Pin 1 GND GND GND GND J1 GND GND GND
Serial Data Out GND Reset Latch Enable Serial Data In Clock VDD GND 0.01 F
QFN 5 x 5 (-310)
0.187 (4.75 mm) BSC
Seating Plane 47 pF
0.122 (3.10 mm) 0.006 (0.15 mm)
32 1
GND GND GND GND J2 GND GND GND GND GND GND GND GND GND GND GND
VDD 10 k 47 pF
0.122 (3.10 mm) 0.006 (0.15 mm)
0.138 (3.50 mm) Ref.
0.019 (0.50 mm) BSC 0.138 (3.50 mm) Ref.
Pin 1-4 5 6-19 20 21-25 26 27 28 J1
Symbol GND GND J2 GND VDD Clock In Serial data in LE Reset GND Serial data out
Function Ground RF input/output Ground RF input/output Ground Supply voltage Serial clock input Serial data input Latch enable Reset Ground Serial data output
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.
29 30 31 32
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. * 200204 Rev. D
DATA SHEET * AA109-310, AA109-310LF
Timing Diagram
LE
SCK
SDA
T1
T2
T3
T5
T4
Parameter LE setup time SDA setup time SDA hold time LE hold time Clock frequency Clock period
Symbol T1 T2 T3 T4 fCLK T5
Min. 5 5 5 5
Typ. 15 15 10 10 16 1/fCLK
Max.
Unit ns ns ns ns
100
MHz
Serial data (SDA) is shifted into the register on the rising edge of the clock (SCK), most significant bit (MSB) first. The attenuator will change states on the rising edge of the latch enable (LE) signal, according to the most recent 5 bits of shifted data accepted since the previous falling edge of the LE signal.
Power-up sequence: 0. Connect ground 1. Apply VDD 2. Set all inputs (SCK, SDA, LE) Power-down sequence should be the reverse of above.
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200204 Rev. D * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * April 30, 2007
5
DATA SHEET * AA109-310, AA109-310LF
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 6
April 30, 2007 * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * 200204 Rev. D

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