DATA SHEET SKY12323-303LF: 0.5-3.0 GHz Five-Bit Digital Attenuator (1 dB LSB) Applications • Transceiver transmit automatic level control or receive automatic gain control in GSM, CDMA, WCDMA, WLAN, Bluetooth®, or Zigbee® land mobile radio base stations or terminal equipment • General-purpose signal attenuation in telecommunications and instrumentation applications Features • Broadband operation: 0.5 to 3.0 GHz • Attenuation range: 31 dB • LSB attenuation: 1 dB • Low insertion loss: 1.4 dB @ 900 MHz • Positive voltage operation: 2.7 to 5.5 V • Low current consumption: <100 μA @ 3 V • High IIP3: +45 dBm • Small, MSOP-10 (10-pin, 3 x 3 mm) package with exposed Figure 1. SKY12323-303LF Block Diagram paddle (MSL1, 260 °C per JEDEC J-STD-020) The SKY12323-303LF is comprised of five cascaded fixed attenuators, each of which has a shunt bypass switch. Beginning at the 1 dB LSB, each succeeding fixed attenuator produces twice the attenuation of the preceding stage. The state of each bypass switch is controlled by the logic level voltage applied to the associated control voltage input. A logic high voltage closes the associated switch, which bypasses that fixed attenuator stage; a logic low opens the switch to force the Description input signal to that stage through the associated attenuator. The SKY12323-303LF is a monolithic, GaAs binary-weighted five- A functional block diagram is shown in Figure 1. The pin bit single positive control voltage digital attenuator. The device configuration and package are shown in Figure 2. Signal pin operates from 0.5 to 3.0 GHz. DC power consumption is very low, assignments and functional pin descriptions are provided in typically 100 μA maximum, with a control and supply voltage of Table 1. 3 V. The SKY12323-303LF has an LSB of 1 dB and total attenuation of 31 dB. The two RF ports are bilateral; each can be used as the RF input or the RF output. An external supply voltage of 2.7 to 5.5 V is required. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 200273D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 3, 2011 1

DATA SHEET • SKY12323-303LF FIVE-BIT DIGITAL ATTENUATOR Figure 2. SKY12323-303LF Pinout – 10-Pin MSOP-10 (Top View) Table 1. SKY12323-303LF Signal Descriptions Pin # Name Description Pin # Name Description 1 V1 High impedance control voltage input for 6 J2 RF input or output port, supply voltage input 1 dB weighted bit (LSB) if not supplied to pin 10 2 V2 High impedance control voltage input for 7 GND Ground 2 dB weighted bit 3 V3 High impedance control voltage input for 8 GND Ground 4 dB weighted bit 4 V4 High impedance control voltage input for 9 GND Ground 8 dB weighted bit 5 V5 High impedance control voltage input for 10 J1 RF input or output port, supply voltage input 16 dB weighted bit (MSB) if not supplied to pin 6 Electrical and Mechanical Specifications The state of the SKY12323-303LF is determined by the logic provided in Table 4. The absolute maximum ratings of the SKY12323-303LF are provided in Table 2. Electrical specifications are provided in Table 3. Typical performance characteristics of the SKY12323-303LF are illustrated in Figures 3 through 6. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 2 June 3, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200273D

DATA SHEET • SKY12323-303LF FIVE-BIT DIGITAL ATTENUATOR Table 2. SKY12323-303LF Absolute Maximum Ratings Parameter Symbol Minimum Typical Maximum Units RF input power (VCTL = 0/8 V): PIN f < 500 MHz +30 dBm f ≥ 500 MHz +35 dBm Supply voltage VS –0.2 +0.2 V Control voltage VCTL –0.2 +8 V Operating temperature TOP –40 +85 °C Storage temperature TSTG –65 +150 °C Note: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters set at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device. CAUTION: Although this device is designed to be as robust as possible, Electrostatic Discharge (ESD) 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 should be used at all times. Table 3. SKY12323-303LF Electrical Specifications (Note 1) (VCTL = 0/3 V, TOP = +25 °C, PIN = 0 dBm, Characteristic Impedance [ZO] = 50 Ω, Unless Otherwise Noted) Parameter Symbol Test Condition Min Typical Max Units Insertion loss IL 0.5 to 1.0 GHz 1.4 2.0 dB 1.0 to 2.0 GHz 1.5 2.5 dB 2.0 to 3.0 GHz 2.3 3.0 dB Attenuation range (Note 2) 31 dB Attenuation accuracy (Note 2) 0.5 to 3.0 GHz ±(0.3 + 5% of attenuation setting) dB Return loss RL 0.5 to 3.0 GHz 7 dB Switching characteristics: Rise/fall time 10/90% or 90/10% RF 150 ns On/off time 50% VCTL to 90/10% RF 300 ns Video feedthrough TRISE = 1 ns, bandwidth = 500 MHz 70 mV Input power for 1 dB compression IP1dB 0.9 to 2.4 GHz: VCTL = 0 to 3 V, +30 dBm VCTL = 0 to 5 V +33 dBm 3rd Order Input Intercept Point IIP3 For two-tone input power, +5 dBm/tone, Δf = 1 MHz, 0.9 to 2.4 GHz: VCTL = 0 to 3 V, +41 dBm VCTL = 0 to 5 V +45 dBm Thermal resistance ΘJC 25 °C/W Supply voltage VS 2.8 3.0 8.0 V Control voltage: Low VLOW –0.2 +0.2 V High VHIGH VS – 0.2 VS + 0.2 V Control port current Ictl VCTL = 0 V 20 μA VCTL = 3 V 100 μA VCTL = 5 V 200 μA Note 1: Performance is guaranteed only under the conditions listed in this Table. Note 2: Attenuation referenced to insertion loss. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 200273D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 3, 2011 3

DATA SHEET • SKY12323-303LF FIVE-BIT DIGITAL ATTENUATOR Typical Performance Characteristics (VS = 5 V, VCTL = 0 to 3 V, TOP = +25 °C, CBLK = 39 pF, PIN = 0 dBm, Characteristic Impedance [ZO] = 50 Ω, , Unless Otherwise Noted) Figure 3. Insertion Loss vs Frequency Figure 4. Attenuation vs Frequency (Normalized to Insertion Loss) Figure 5. Attenuation Accuracy vs Frequency Figure 6. Return Loss vs Frequency Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 4 June 3, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200273D

DATA SHEET • SKY12323-303LF FIVE-BIT DIGITAL ATTENUATOR Table 4. SKY12323-303LF Truth Table J1 to J2 V1 V2 V3 V4 V5 Attenuation (Pin 1) (Pin 2) (Pin 3) (Pin 4) (Pin 5) Reference insertion loss VHIGH VHIGH VHIGH VHIGH VHIGH 1 dB VLOW VHIGH VHIGH VHIGH VHIGH 2 dB VHIGH VLOW VHIGH VHIGH VHIGH 4 dB VHIGH VHIGH VLOW VHIGH VHIGH 8 dB VHIGH VHIGH VHIGH VLOW VHIGH 16 dB VHIGH VHIGH VHIGH VHIGH VLOW 31 dB VLOW VLOW VLOW VLOW VLOW Note: VHIGH = +3 V to 5 V. VLOW = 0 V to +0.2 V. This Table shows the logic required for the major bits and full attenuation. Bit states need to be used in combination to set the sum of the bits selected. Evaluation Board Description Package and Handling Information The SKY12323-303LF Evaluation Board is used to test the Instructions on the shipping container label regarding exposure to performance of the SKY12323-303LF digital attenuator. An moisture after the container seal is broken must be followed. assembly drawing for the Evaluation Board is shown in Figure 7 Otherwise, problems related to moisture absorption may occur and an Evaluation Board schematic diagram is shown in Figure 8. when the part is subjected to high temperature during solder assembly. THE SKY12323-303LF is rated to Moisture Sensitivity Level 1 Package Dimensions (MSL1) at 260 °C. It can be used for lead or lead-free soldering. Package dimensions for the 10-pin MSOP-10 are shown in For additional information, refer to the Skyworks Application Note, Figure 9, and tape and reel dimensions are provided in Figure 10. Solder Reflow Information, document number 200164. Care must be taken when attaching this product, whether it is done manually or in a production solder reflow environment. Production quantities of this product are shipped in a standard tape and reel format. Figure 7. SKY12323-303LF Evaluation Board Assembly Diagram Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 200273D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 3, 2011 5

DATA SHEET • SKY12323-303LF FIVE-BIT DIGITAL ATTENUATOR Figure 8. SKY12323-303LF Evaluation Board Schematic Diagram Figure 9. SKY12323-303LF 10-Pin MSOP-10 Package Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 6 June 3, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200273D

DATA SHEET • SKY12323-303LF FIVE-BIT DIGITAL ATTENUATOR Figure 10. SKY12323-303LF Tape and Reel Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 200273D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 3, 2011 7

DATA SHEET • SKY12323-303LF FIVE-BIT DIGITAL ATTENUATOR Ordering Information Model Name Manufacturing Part Number Evaluation Board Part Numbers SKY12323-303LF Digital Attenuator SKY12323-303LF SKY12323-303LF-EVB Copyright © 2002-2006, 2011 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 8 June 3, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200273D