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F1953 Datasheet(PDF) 1 Page - Renesas Technology Corp |
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F1953 Datasheet(HTML) 1 Page - Renesas Technology Corp |
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1 / 22 page  Datasheet F1912 6-Bit Digital Step Attenuator, 1MHz to 4000MHz R35DS0055EU0100 Rev.1.00 Nov 10, 2022 Page 1 © 2015-2022 Renesas Electronics This document describes the specification for the Renesas F1912 Digital Step Attenuator. The F1912 is part of a family of Glitch-FreeTM DSAs optimized for the demanding requirements of Base Station (BTS) radio cards and numerous other non-BTS applications. These devices are offered in a compact 4mm x 4mm 20- pin QFN package with 50Ω impedances for ease of integration. Competitive Advantage Digital step attenuators are used in receivers and transmitters to provide gain control. The F1912 is a 6-bit step attenuator optimized for these demanding applications. The silicon design has very low insertion loss and low distortion (> +60 dBm IIP3). The device has pinpoint accuracy. Most importantly, the F1912 includes Renesas’ Glitch-FreeTM technology, which results in low overshoot and ringing during MSB transitions. ■ Glitch-FreeTM technology so PA or ADC will not be damaged during when transitions. ■ Extremely accurate with low distortion. ■ Lowest insertion loss for best SNR Applications ■ Base Station 2G, 3G, 4G, TDD radio cards ■ Repeaters and E911 systems ■ Digital Pre-Distortion ■ Point to Point Infrastructure ■ Public Safety Infrastructure ■ WIMAX Receivers and Transmitters ■ Military Systems, JTRS radios ■ RFID Handheld and Portable Readers ■ Cable Infrastructure Features ■ Serial and 6-bit Parallel Interface ■ 31.5dB Control Range ■ 0.5dB step ■ Glitch-FreeTM, low transient overshoot ■ 3.0 V to 5.25 V supply ■ 1.8 V or 3.3 V control logic ■ Attenuation Error < 0.20 dB at 2GHz ■ Low Insertion Loss < 1.4 dB at 2GHz ■ Ultra Linear IIP3 > +60dBm ■ IIP2 = +110 dBm typical ■ Stable Integral Non-Linearity over temperature ■ Low Current Consumption 550 µA typical ■ -55 °C to +105 °C operating temperature ■ 4 x 4 mm Thin QFN 20-pin package Block Diagram Part Number Details Part# Freq Range (MHz) Resolution / Range (dB) Control IL (dB) Pinout F1950 150 - 4000 0.25 / 31.75 Parallel & Serial 1.3 PE43702 PE43701 F1951 100 - 4000 0.50 / 31.5 Serial Only 1.2 HMC305 F1952 100 – 4000 0.50 / 15.5 Serial Only 0.9 HMC305 F1953 400 – 4000 0.50 / 31.5 Parallel & Serial 1.3 PE4302 DAT-31R5 F1956 1 - 4000 0.25 / 31.75 Parallel & Serial 1.4 PE43705, RFSA3715 F1912 1 – 4000 0.50 / 31.5 Parallel & Serial 1.4 PE4312 PE4302 Decoder RF1 RF2 D[5:0] SPI Bias CLK DATA LE VMODE |
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