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RFSA3715SR Datasheet(PDF) 1 Page - RF Micro Devices |
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RFSA3715SR Datasheet(HTML) 1 Page - RF Micro Devices |
1 / 20 page RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 DS150205 For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com. RF MICRO DEVICES ® and RFMD® are trademarks of RFMD, LLC. BLUETOOTH is a trademark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks, and registered trademarks are the property of their respective owners. ©2013, RF Micro Devices, Inc. 1 of 20 RFSA3715 5MHz to 4000MHz, Digital Step Attenuator The RFMD’s RFSA3715 is a 7-bit digital step attenuator (DSA) that features high linearity over the entire 31.75dB gain control range with 0.25dB steps. The RFSA3715 features three modes of control: serial addressable, latched parallel and direct parallel programming. The RFSA3715 has a low insertion loss of 1.5dB at 2GHz. Patent pending circuit architecture providing overshoot-free transient switching performance. External address pins allow up to eight DSAs to be controlled on a single bus. The RFSA3715 is available in a 5mm x 5mm QFN package. 32 1 2 3 4 5 6 31 30 29 28 27 24 23 22 21 20 19 9 10 11 12 13 14 7-BIT DSA LOGIC CONTROL NC VDD PBAR/S A0 GND GND CLK LE A1 A2 GND GND 7 8 RFIN GND 18 17 RFOUT GND 26 25 15 16 Functional Block Diagram Ordering Information RFSA3715SQ Sample bag with 25 pieces RFSA3715SR 7" Reel with 100 pieces RFSA3715TR13 13" Reel with 2500 pieces RFSA3715PCK-410 5MHz to 4000MHz PCBA with 5-piece sample bag Package: QFN, 32-pin, 5.0mm x 5.0mm x 0.85mm Features ■ 7-Bit, 31.75dB Range, 0.25dB Step ■ Patent Pending Circuit Architecture ■ Overshoot-free Transient Switching Performance ■ Frequency Range 5MHz to 4000MHz ■ High Linearity, IIP3 >55dBm ■ Serial and Parallel Control Interface ■ Fast Switching Speed, <120nsec ■ Serial Addressable Supports Up to Eight Addresses ■ Single Supply 3V to 5V Operation ■ RF Pins Have No DC Voltage, Can Be DC Grounded Externally ■ Power-up Default Setting is Maximum Attenuation Applications ■ 2G through 4G Base Stations ■ Point-to-Point ■ WiMax/WiFi ■ Test Equipment RFSA3715 |
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