data sheet SKY12406-360LF: GaAs IC 1-Bit Digital Attenuator 12 dB LSB 50 MHz–600 MHz Functional Diagram Features l l l l l P ositive voltage control (0/+3 V) H igh bit accuracy L ow loss A bsorptive in 50 W systems P ackaged lead (Pb)-free, RoHS-compliant and Green™ RF In/Out VCTL1 12 dB Description The SKY12406-360LF is a pHEMT GaAs FET IC single bit attenuator packaged in an 2 x 2 mm 8-lead exposed pad plastic package for low-cost commercial applications. This attenuator has an LSB of 12 dB. The SKY12406-360LF is particularly suited where high attenuation accuracy, low insertion loss, and low intermodulation products are required. Typical applications include cellular radio, wireless data, and wireless local loop gain level control circuits. NEW VCTL2 RF In/Out Skyworks Green™ products are RoHS (Restriction of Hazardous Substances)-compliant, conform to the EIA/EICTA/JEITA Joint Industry Guide (JIG) Level A guidelines, are halogen free according to IEC-61249-2-21, and contain <1,000 ppm antimony trioxide in polymeric materials. Electrical Specifications VCTL = 0 V/3 V, T = 25 °C, PINPUT = 0 dBm, Zo = 50 W, unless otherwise noted Parameter Frequency Min. Typ. Max. Unit 0.3 0.4 dB 12.4 dB Insertion Loss 50 MHz–600 MHz Attenuation 50 MHz–600 MHz 11.6 12 Return Loss 50 MHz–600 MHz 15 20 dB Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 200965 Rev. A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • October 28, 2008 1 Data Sheet • SKY12406-360LF Operating Characteristics VCTL = 0 V/3 V, T = 25 °C, PINPUT = 0 dBm, Zo = 50 W, unless otherwise noted Parameter Condition Switching characteristics Rise/fall time On, off time 10/90% or 90/10% RF 50% VCTL to 90/10% RF Input power for 1 dB compression VCTL = 0 V/3 V Input Intermodulation intercept point (IIP3) For two tone input power 10 dBm/tone 1 MHz spacing VCTL = 0/3 V Control voltages VCTL LOW VCTL HIGH Control currents VCTL LOW, VCTL HIGH Frequency Min. Typ. Max. Unit 7 8 35 35 ns ns 50 MHz 600 MHz 18 20 22 25 dBm dBm 50 MHz 600 MHz 42 44 46 50 dBm dBm 0 2.7 1. Switching characteristics will vary with value chosen for Cbp. 10 0.2 3.3 V V 50 µA Typical Performance Data VCTL = 3 V, T = 25 °C, PINPUT = 0 dBm, Zo = 50 W, Cblk = 560 pF, Cbp = 560 pF, unless otherwise noted 0 -11.0 -0.1 -11.2 -0.2 -11.4 -0.3 -11.6 -11.8 -0.5 dB dB -0.4 -0.6 -12.0 -12.2 -0.7 -12.4 -0.8 -12.6 -0.9 -12.8 -1 0 -13.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0 Frequency (GHz) Frequency (GHz) typical Insertion Loss Input Return Loss Output Return Loss Input Return Loss 0 -5 -5 -10 -10 -15 -15 -20 -20 -25 -25 -30 Output Return Loss -30 -35 -35 -40 -40 -45 -45 -50 0 2 typical attenuation dB dB 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 -50 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Frequency (GHz) Frequency (GHz) typical Return Loss (Insertion Loss State) typical Return Loss (attenuation State) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com October 28, 2008 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • 200965 Rev. A Data Sheet • SKY12406-360LF Pin Out Absolute Maximum Ratings Characteristic Pin 1 Indicator 1 GND 2 VCTL1 3 CBP 4 S06 RF1 8 RF2 7 GND 6 VCTL2 5 GND Top View Pin 8 Pin 1 RF2 8 1 RF1 GND 7 2 GND VCTL2 6 3 VCTL1 GND 5 4 CBP Exposed Pad Storage temperature -65 °C to +150 °C CAUTION: A lthough 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. Truth Table VCTL1 VCTL2 RF1–RF2 1 0 Insertion loss 0 1 Attenuation 1 = 3 V. 0 = 0 V. Any state other than described in the truth table will put the attenuator in an undefined state. If a non-described state occurs, no damage to the attenuator will occur. Bottom View DC blocks are required on RF1 and RF2. Cblk = 560 pF for 50 MHz operation. Cbp = 560 pF for 50 MHz operation. Recommended Solder Reflow Profiles Refer to the “Recommended Solder Reflow Profile” Application Note. Pin Descriptions Operating temperature 24 dBm at 50 MHz 27 dBm at 600 MHz -40 °C to +85 °C 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. Skyworks P/N Pin Number Value RF input power @ 3 V Pin Name Description 1 RF1 RF port 2 GND Ground 3 VCTL1 DC control voltage 4 CBP RF GND, must be AC coupled to ground 5 GND Ground 6 VCTL2 DC control voltage 7 GND Ground 8 RF2 RF port Exposed Paddle Paddle Tape and Reel Information Refer to the “Discrete Devices and IC Switch/Attenuators Tape and Reel Package Orientation” Application Note. Must be connected to RF ground Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 200965 Rev. A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • October 28, 2008 3 Data Sheet • SKY12406-360LF QFN 8L 2 x 2 mm Package Suggested Land Pattern (Top View) 0.20 Ref. Seating Plane R 0.20 8X 0.70 8X 0.45 Pin 1 2 Pin 1 Indicator 8X 0.25 2 0.50 Pitch 0.90 ± 0.10 0.25 2X 0.85 0.90 + 0.10 0.90 - 0.15 0.45 + 0.05 0.45 - 0.07 Exposed Pad 0.50 0.85 + 0.05 0.85 - 0.07 0.25 + 0.05 0.25 - 0.07 2X 0.45 1.70 + 0.10 1.70 - 0.15 0.30 + 0.01 Evaluation Board CBLK = 560 pF (0402 size) 4 places CBP = 560 pF (0402 size) 1 places VDD Cblk Cblk 1 * * J1 J2 Cbp VCTL2 VCTL1 VDD/VCTL GND VCTL TEST BOARD:SINGLE BIT ATTN -360 MLPD SMA SK40940-1 REV 1 Cblk Cblk * 4 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com October 28, 2008 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • 200965 Rev. A Exposed Soldering Area Typ. Data Sheet • SKY12406-360LF Copyright © 2008, Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. 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Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 200965 Rev. A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • October 28, 2008 5