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F1977NBGI8 Datasheet(PDF) 1 Page - Integrated Device Technology |
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F1977NBGI8 Datasheet(HTML) 1 Page - Integrated Device Technology |
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1 / 21 page  F1977 Datasheet 7-Bit, 75 Ω, Digital Step Attenuator 5 to 3000 MHz F1977, Rev 1, 04/21/2016 1 © 2016 Integrated Device Technology, Inc. GENERAL DESCRIPTION This document describes the specification for the F1977 Digital Step Attenuator. The F1977 is part of a family of Glitch-Free TM DSAs optimized for the demanding requirements of CATV and Satellite systems. These devices are offered in a compact 5 mm x 5 mm 32 pin QFN package with 75 impedances for ease of integration. COMPETITIVE ADVANTAGE Digital step attenuators are used in Receivers and Transmitters to provide gain control. The F1977 is a 7-bit step attenuator optimized for these demanding applications. The silicon design has very low insertion loss, low distortion (+64 dBm IIP3) and pinpoint attenuation accuracy. Most importantly, the F1977 includes IDT’s Glitch-Free TM technology which results in low overshoot & ringing during MSB transitions. Lowest insertion loss for best SNR Extremely accurate attenuation levels. Ultra low distortion. Glitch-Free TM technology to protect PA or ADC during transitions between attenuation states. APPLICATIONS • CATV Infrastructure • CATV Set-Top Boxes • CATV Satellite Modems • Data Network Equipment • Fiber Networks Ordering Information FEATURES • Serial & 7 bit Parallel Interface • 31.75 dB Control Range • 0.25 dB step • Glitch-Free TM for low transient overshoot • Low Insertion Loss: 1.4 dB @ 1 GHz • Ultra linear IIP3: +64 dBm • Attenuation Error: -0.1 dB @ 1 GHz • Stable Attenuator Accuracy over temperature • Bi-directional RF use • 3.00 V to 5.25 V supply • 1.8 V or 3.3 V control logic • Low Current Consumption: 325 A typical • -40 °C to +105 °C operating temperature • 5 mm x 5 mm Thin QFN 32 pin package FUNCTIONAL BLOCK DIAGRAM Glitch-Free TM Glitch-Free TM F1977NBGI8 Tape & Reel Green |
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