SKY12328-350LF

DATA SHEET SKY12328-350LF: 0.5-4.0 GHz Five-Bit Digital Attenuator (0.5 dB LSB) Applications • Transceiver transmit automatic level control or receive automatic gain control in WiMAX, 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 4.0 GHz • Attenuation range: 15.5 dB • LSB attenuation: 0.5 dB • Low insertion loss: 1 dB @ 900 MHz • Positive voltage operation: 2.7 to 5.5 V • Low current consumption: 500 MHz 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. SKY12328-350LF Electrical Specifications (Note 1) (VCTL = 0/5 V, TOP = +25 °C, PIN = 0 dBm, Characteristic Impedance [ZO] = 50 Ω, Unless Otherwise Noted) Parameter Insertion loss Symbol IL Test Condition Min 0.5 to 1.0 GHz 1.0 to 2.0 GHz 2.0 to 3.0 GHz 3.0 to 4.0 GHz Attenuation range Attenuation accuracy Return loss RL Switching characteristics: Rise/fall time On/off time dB ±(0.3 + 3% of attenuation setting) dB 0.5 to 1.0 GHz 1.0 to 4.0 GHz 15 20 dB dB 10/90% or 90/10% RF 50% VCTL to 90/10% RF 150 300 ns ns +30 dBm VCTL = 0 to 3 V, VCTL = 0 to 5 V +40 +42 dBm dBm Junction to package terminal 45 °C/W For two-tone input power, +5 dBm/tone, 1 to 4 GHz: VCTL Control port current ICTL dB dB dB dB ±(0.2 + 3% of attenuation setting) IIP3 Control voltage: High Low 1.3 1.5 1.9 2.5 1.0 to 4.0 GHz, all attenuation states 3rd Order Input Intercept Point VS 1.1 1.3 1.6 2.3 0.5 to 1.0 GHz, attenuation referred to insertion loss @ 0.9 GHz, VCTL = 0 to 5 V Supply voltage Units dB IP1dB ΘJC Max 15.5 Input power for 1 dB compression Thermal resistance Typical VCTL = VHIGH VCTL = VLOW VHIGH – 0.2 VHIGH + 0.2 V 2.7 –0.2 5.5 +0.2 V V 100 20 μA μA 15 5 Note 1: Performance is guaranteed only under the conditions listed in this Table. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 200753D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 2, 2011 3 DATA SHEET • SKY12328-350LF 5-BIT DIGITAL ATTENUATOR Typical Performance Characteristics (VCTL = 0/5 V, TOP = +25 °C, PIN = 0 dBm, Characteristic Impedance [ZO] = 50 Ω, Unless Otherwise Noted) Figure 3. Insertion Loss vs Frequency Figure 4. Attenuation vs Frequency (8 dB to 15.5 dB, Normalized to Insertion Loss) Figure 5. Attenuation vs Frequency (Normalized to Insertion Loss) Figure 6. Input Return Loss vs Frequency Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 4 March 2, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200753D DATA SHEET • SKY12328-350LF 5-BIT DIGITAL ATTENUATOR Figure 7. Attenuation vs Frequency (0.5 dB to 7.5 dB, Normalized to Insertion Loss) Figure 8. Output Return Loss vs Frequency Table 4. SKY12328-350LF Truth Table Nominal Attenuation V1 (Pin 1) V2 (Pin 2) V3 (Pin 3) V4 (Pin 4) V5 (Pin 5) Reference insertion loss VHIGH VHIGH VHIGH VHIGH VHIGH 0.5 dB VLOW VHIGH VHIGH VHIGH VHIGH 1.0 dB VHIGH VLOW VHIGH VHIGH VHIGH 2.0 dB VHIGH VHIGH VLOW VHIGH VHIGH 4.0 dB VHIGH VHIGH VHIGH VLOW VHIGH 8.0 dB VHIGH VHIGH VHIGH VHIGH VLOW 15.5 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 SKY12328-350LF Evaluation Board is used to test the performance of the SKY12328-350LF digital attenuator. An assembly drawing for the Evaluation Board is shown in Figure 9 and an Evaluation Board schematic diagram is shown in Figure 10. Instructions on the shipping container label regarding exposure to moisture after the container seal is broken must be followed. Otherwise, problems related to moisture absorption may occur when the part is subjected to high temperature during solder assembly. Package Dimensions THE SKY12328-350LF is rated to Moisture Sensitivity Level 1 (MSL1) at 260 °C. It can be used for lead or lead-free soldering. For additional information, refer to the Skyworks Application Note, Solder Reflow Information, document number 200164. Typical case markings are shown in Figure 11. Package dimensions for the 16-pin QFN are shown in Figure 12, and tape and reel dimensions are provided in Figure 13. 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. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 200753D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 2, 2011 5 DATA SHEET • SKY12328-350LF 5-BIT DIGITAL ATTENUATOR Figure 9 SKY12328-350LF Evaluation Board Assembly Diagram Figure 10. SKY12328-350LF Evaluation Board Schematic Diagram Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 6 March 2, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200753D DATA SHEET • SKY12328-350LF 5-BIT DIGITAL ATTENUATOR Figure 11. Typical Case Markings (Top View) Figure 12. SKY12328-350LF 16-Pin QFN Package Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 200753D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 2, 2011 7 DATA SHEET • SKY12328-350LF 5-BIT DIGITAL ATTENUATOR Figure 13. SKY12328-350LF Tape and Reel Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 8 March 2, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200753D DATA SHEET • SKY12328-350LF 5-BIT DIGITAL ATTENUATOR Ordering Information Model Name SKY12328-350LF Digital Attenuator Manufacturing Part Number SKY12328-350LF Evaluation Board Part Numbers SKY12328-350LF-EVB Copyright © 2007-2008, 2011 Skyworks Solutions, Inc. All Rights Reserved. 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Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 200753D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 2, 2011 9