DATA SHEET AA103-72/-72LF: 10 MHz - 2.5 GHz GaAs One-Bit Digital Attenuator (10 dB LSB) Applications • Cellular radio • Wireless data systems • WLL gain level control circuits Features • Attenuation: 10 dB • Single, positive control voltage: 3 V • Low loss • Small SOT-5 package (MSL1, 260 °C per JEDEC J-STD-020) Figure 1. AA103-72/-72LF Block Diagram Description The AA103-72/-72LF are one-bit GaAs FET digital attenuators in a low-cost SOT-5 package. These devices provide an LSB of 10 dB. The AA103-72/-72LF are particularly suited where high attenuation accuracy, low insertion loss, and low intermodulation products are required. Figure 2. AA103-72/-72LF Pinout – 5-Pin SOT-5 (Top View) A functional block diagram is shown in Figure 1. The pin configuration and package are shown in Figure 2. Signal pin assignments and functional pin descriptions are provided in Table 1. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 200199C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • February 24, 2011 1 DATA SHEET • AA103-72/-72LF 1-BIT DIGITAL ATTENUATOR Table 1. AA103-72/-72LF Signal Descriptions Pin # Name Description Pin # Name Description 1 J1 RF port. Must be DC blocked. 4 V1 DC control bias 2 RF_GND RF ground. Must be AC-coupled to ground. 5 V2 DC control bias 3 J2 RF port. Must be DC blocked. Table 2. AA103-72/-72LF Absolute Maximum Ratings Parameter RF input power Symbol Minimum PIN Maximum Units 1 W > 500 MHz 0/8 V dBm 0.5 W @ 50 MHz 0/8 V dBm 8 V Supply voltage VS Control voltage VCTL –0.2 +8.0 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. Electrical and Mechanical Specifications The absolute maximum ratings of the AA103-72/-72LF are provided in Table 2. Electrical specifications are provided in Tables 3. The state of the AA103-72/-72LF is determined by the logic provided in Table 4. Typical performance characteristics of the AA103-72/-72LF are illustrated in Figures 3 through 5. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 2 February 24, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200199C DATA SHEET • AA103-72/-72LF 1-BIT DIGITAL ATTENUATOR Table 3. AA103-72/-72LF Electrical Specifications (Note 1) (VCTL = 0/3 V Characteristic Impedance [ZO] = 50 Ω, Unless Otherwise Noted) Parameter Symbol Insertion loss (Note 2) IL Test Condition (Note 2) Min 10 MHz to 0.5 GHz 0.5 GHz to 1.0 GHz 1.0 GHz to 2.5 GHz Attenuation range Attenuation accuracy (Note 3) Typical Max Units 0.3 0.3 0.4 0.5 0.6 0.7 dB dB dB 10 dB 10 MHz to 1.0 GHz 1.0 GHz to 2.5 GHz ± (0.25 + 3% of attenuation setting) ± (0.4 + 5% of attenuation setting) dB dB Voltage Standing Wave Ratio (I/O) VSWR 10 MHz to 2.5 GHz 1.2:1 1.4:1 – Voltage Standing Wave Ratio (attenuation state) (Note 4) VSWR 0.01 GHz to 2.5 GHz 1.5:1 2.0:1 – 10/90% or 90/10% RF 50% VCTL to 90/10% RF TRISE = 1 ns, bandwidth = 500 MHz 150 300 ns ns 70 mV +20 +26 dBm dBm +41 +45 dBm dBm Switching characteristics (Note 4): Rise/fall On/off Video feedthrough 1 dB Input Compression Point IP1dB 0.5 to 2.5 GHz: VS = 3 V, VS = 5 V 3rd Order Input Intercept Point IIP3 For two-tone input, PIN = +10 dBm/tone, 0.5 to 2.5 GHz: VS = 3 V VS = 5 V Control voltages VCTL 0 3 @ 25 μA typical to 5 V VCTL = VLOW VCTL = VHIGH 0.2 5 @ 50 μA typical V V Note 1: Performance is guaranteed only under the conditions listed in this Table. Note 2: Insertion loss changes by 0.003 dB/ °C. Note 3: Maximum attenuation includes insertion loss. Note 4: Switching characteristics vary with value chosen for bypass capacitor. Table 4. AA103-72/-72LF Truth Table J1 to J2 Insertion loss Attenuation Note: V1 (Pin 4) V2 (Pin 6) VHIGH 0 0 VHIGH VHIGH = +3 V to +5 V (VS = VHIGH ± 0.2 V). All other conditions not recommended. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 200199C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • February 24, 2011 3 DATA SHEET • AA103-72/-72LF 1-BIT DIGITAL ATTENUATOR Typical Performance Characteristics (VCTL = 0/3 V Characteristic Impedance [ZO] = 50 Ω, Unless Otherwise Noted) Figure 3. Insertion Loss vs Frequency Figure 4. VSWR vs Frequency Figure 5. Attenuation vs Frequency Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 4 February 24, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200199C DATA SHEET • AA103-72/-72LF 1-BIT DIGITAL ATTENUATOR Evaluation Board Description Package and Handling Information The AA103-72/-72LF Evaluation Board is used to test the performance of the AA103-72/-72LF digital attenuator. An Evaluation Board schematic diagram is shown in Figure 6. 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 Package dimensions for the 5-pin SOT-5 are shown in Figure 7, and tape and reel dimensions are provided in Figure 8. THE AA103-72/-72LF 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. 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 6. AA103-72/-72LF Evaluation Board Schematic Diagram Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 200199C • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • February 24, 2011 5 DATA SHEET • AA103-72/-72LF 1-BIT DIGITAL ATTENUATOR Figure 7. AA103-72/-72LF 5-Pin SOT-5 Package Dimensions Figure 8. AA103-72/-72LF Tape and Reel Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 6 February 24, 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 200199C DATA SHEET • AA103-72/-72LF 1-BIT DIGITAL ATTENUATOR Ordering Information Model Name AA103-72/-72LF One-Bit Digital Attenuator Manufacturing Part Number AA103-72/-72LF Evaluation Board Part Numbers AA103-72/-72LF-EVB Copyright © 2002-2007, 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. 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