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DATA SHEET
SKY12324-73, SKY12324-73LF: GaAs IC 2-Bit Digital Attenuator 4 dB LSB 0.5-4 GHz
Features
4 dB LSB steps to 12 dB G Single positive control voltage per bit G Low insertion loss G Low-cost SOT-6 plastic package G Available lead (Pb)-free and RoHS-compliant MSL-1 @ 260 C per JEDEC J-STD-020
G
Pin Out (Top View)
J2 CBL V2 NC V1
1 2 3
GND
6 5
J1
CBL 5k
4
Description
The SKY12324-73 is a 2-bit digital attenuator fabricated with Skyworks GaAs PHEMT technology. The two attenuation bits, 4 and 8 dB, can be independently switched into or out of the signal path according to the magnitudes of the control voltages applied to the two high-impedance control voltage inputs. The RF ports are internally matched to 50 and are fully bilateral. The SKY12324-73 is packaged in the SOT-6 package. The SKY12324-73 is ideally suited for use in applications where low insertion loss, excellent attenuation accuracy and excellent intermodulation distortion performance are required. These applications include cellular telephone base stations, test instruments and wireless data level control circuits. A populated evaluation board is available.
VS DC blocking capacitors (CBL) must be supplied externally for positive voltage operation. CBL = 47 pF for operation > 500 MHz.
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Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200219 Rev. C * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * March 27, 2007
1
DATA SHEET * SKY12324-73, SKY12324-73LF
Electrical Specifications at 25 C
Z0 = 50 , VCTL = 0/3 V, VS = 3 V, unless otherwise noted
Parameter Insertion loss Frequency 0.5-1.0 GHz 1.0-2.0 GHz 2.0-2.5 GHz 2.5-3.0 GHz 3.0-4.0 GHz 0.5-1.0 GHz 1.0-3.0 GHz 3.0-4.0 GHz Return loss (insertion loss state) Return loss (attenuation state) 0.5-3.0 GHz 3.0-4.0 GHz 0.5-3.0 GHz 3.0-4.0 GHz Min. Typ. 0.9 1.0 1.2 1.3 2.0 12 (0.2 + 3% of attenuation setting in dB) (0.3 + 5% of attenuation setting in dB) (0.4 + 5% of attenuation setting in dB) 15 12 12 12 20 15 18 15 Max. 1.0 1.2 1.3 1.4 2.1 Unit dB dB dB dB dB dB dB dB dB dB dB dB dB
Attenuation range Attenuation accuracy
Operating Characteristics at 25 C
Parameter Switching characteristics Rise, fall On, Off Video feedthru Input power for 1dB compression Intermodulation intercept point (IIP3) VS voltage Control voltage Control voltage Control current Control current Control current Condition 10/90% or 90/10% RF 50% CTL to 90/10% RF TRISE = 1 ns, BW = 500 MHz VS = 3 V Two-tone 15 dBm each VS VLOW VHIGH VLOW VHIGH = 3 V VHIGH = 5 V 900 MHz 1.0 GHz 3.0 GHz 3 0 VS - 0.2 10 50 100 Frequency Min. Typ. 40 100 50 30 46 44 5 0.2 VS + 0.2 20 100 200 Max. Unit ns ns mV dBm dBm dBm V V V uA uA uA
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 2
March 27, 2007 * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * 200219 Rev. C
DATA SHEET * SKY12324-73, SKY12324-73LF
Typical Performance Data
T = 25C, Z0 = 50 , VCTL = 0/3 V, VS = 3 V, unless otherwise noted
0 -0.2 -0.4 -0.6 -0.8 -1.0 -1.2 -1.4 -1.6 -1.8 -2.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 -3.0 -3.2 -3.4
Insertion Loss (dB)
Attenuation (dB)
-3.6 -3.8 -4.0 -4.2 -4.4 -4.6 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Frequency (GHz)
Frequency (GHz)
Insertion Loss vs. Frequency
-7.0 -7.2 -7.4 -7.6 -7.8 -8.0 -8.2 -8.4 -8.6 -8.8 -9.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 -11.0 -11.2 -11.4
4 dB Bit Attenuation vs. Frequency
Attenuation (dB)
Attenuation (dB)
-11.6 -11.8 -12.0 -12.2 -12.4 -12.6 -12.8 -13.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Frequency (GHz)
Frequency (GHz)
8 dB Bit Attenuation vs. Frequency
Ins. Return Loss 8 dB Return Loss 0 -5 4 dB Return Loss 12 dB Return Loss
12 dB Bit Attenuation vs. Frequency
4 dB Bit Error
12 dB Bit Error
8 dB Bit Error
Deviation from Nominal Attenuation (dB)
1.0 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Return Loss (dB)
-10 -15 -20 -25 -30 -35 -40 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Frequency (GHz)
Frequency (GHz)
Return Loss vs. Frequency
Attenuation Accuracy vs. Frequency
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200219 Rev. C * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * March 27, 2007
3
DATA SHEET * SKY12324-73, SKY12324-73LF
Truth Table
V1 (8 dB) High High Low Low
VHIGH = 3 to 5 V (VS = VHIGH 0.2 V).
Absolute Maximum Ratings
V2 (4 dB) High Low High Low Characteristic J1-J2 Reference I.L. 4 dB 8 dB 12 dB RF input power, VCTL = 0/8 V Supply voltages Control voltages VHIGH Operating temperature Storage temperature Value 31 dBm 8V -0.2 V, +8 V VS 0.2 V -40 C to +85 C -65 C to +150 C
Suggested Land Pattern
0.70 mm Ref.
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.
1.0 mm Ref.
2.4 mm Ref.
3.4 mm Ref.
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.
0.95 mm Ref.
0.95 mm Ref.
S
Recommended Solder Reflow Profiles
Refer to the "Recommended Solder Reflow Profile" Application Note.
Description RF Input/Output - RF input/output with 50 nominal impedance. An internally generated DC voltage is present at this pin, so an external DC block must be used to connect this pin to the external circuit. Equipotential Point - Internal circuit common, which must be connected to the pcb ground or common via the lowest possible impedance. RF Output/Input - DC supply voltage input and RF output/input with 50 nominal impedance. The nominal voltage required at this pin is listed in the Specifications table. Supply current must be limited by an external resistor connected between the DC power supply and this pin. Control Voltage 1 - High input-impedance control port for the 8 dB bit. The high control voltage applied to this pin must be within 0.2 V of the supply voltage applied to pin 3, or the part may be permanently damaged. The low control voltage is 0 V nominal. No internal connection Control Voltage 2 - High input-impedance control port for the 4 dB bit. The high control voltage applied to this pin must be within 0.2 V of the supply voltage applied to pin 3, or the part may be permanently damaged. The low control voltage is 0 V nominal.
Pin Descriptions
Pin Number 1 Pin Name J2
Tape and Reel Information
Refer to the "Discrete Devices and IC Switch/Attenuators Tape and Reel Package Orientation" Application Note.
2
Ground
3
J1
4
V1
5 6
NC V2
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 4
March 27, 2007 * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * 200219 Rev. C
DATA SHEET * SKY12324-73, SKY12324-73LF
Evaluation Board
SKY12324-73 Chip
SOT-6
0.074 (1.90 mm) Ref. Pin 6 0.126 (3.20 mm) 0.087 (2.20 mm) 0.071 (1.80 mm) 0.052 (1.30 mm)
J2
CBL
V2
Pin 1 Indicator Pin 1 0.020 (0.51 mm) 0.014 (0.350 mm) 0.057 (1.45 mm) 0.035 (0.90 mm)
0.037 (0.95 mm) Ref. 0.012 (0.30 mm) Typ. 0.014 (0.26 mm) 0.004 (0.10 mm)
0.006 (0.15 mm) 0.000 (0.00 mm) 5k SK38820 REV 1 VS SOT-6 UNIVERSAL
5.0 1
5.0 1 V1 0.122 (3.10 mm) 0.106 (2.70 mm) 0.022 (0.61 mm) 0.004 (0.10 mm)
J1
CBL
Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com
200219 Rev. C * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * March 27, 2007
5
DATA SHEET * SKY12324-73, SKY12324-73LF
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, "Breakthrough Simplicity" and "Innovation to Go" are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Thirdparty 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
March 27, 2007 * Skyworks Proprietary Information * Products and Product Information are Subject to Change Without Notice. * 200219 Rev. C

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