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F1951 Dataheets PDF



Part Number F1951
Manufacturers Renesas
Logo Renesas
Description Digital Step Attenuator
Datasheet F1951 DatasheetF1951 Datasheet (PDF)

DESCRIPTION This document describes the specification for the F1951 Digital Step Attenuator. The F1951 is part of a family of Glitch-FreeTM DSAs optimized for the demanding requirements of communications Infrastructure. These devices are offered in a compact 4x4 QFN package with 50 Ω impedances for ease of integration into the radio system. COMPETITIVE ADVANTAGE Digital step attenuators are used in Receivers and Transmitters to provide gain control. The F1951 is a 6bit step attenuator optimized .

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DESCRIPTION This document describes the specification for the F1951 Digital Step Attenuator. The F1951 is part of a family of Glitch-FreeTM DSAs optimized for the demanding requirements of communications Infrastructure. These devices are offered in a compact 4x4 QFN package with 50 Ω impedances for ease of integration into the radio system. COMPETITIVE ADVANTAGE Digital step attenuators are used in Receivers and Transmitters to provide gain control. The F1951 is a 6bit step attenuator optimized for these demanding applications. The silicon design has very low insertion loss and low distortion (+65 dBm IP3I.). The device has pinpoint accuracy and settles to final attenuation value within 400 nsec. Most importantly, the F1951 includes Renesas’ Glitch-FreeTM technology which results in less than 0.6 dB of overshoot ringing during MSB transitions. This is in stark contrast to competing DSAs that glitch as much as 10 dB during MSB transitions (see p.10).  Lowest insertion loss for best SNR  Glitch-FreeTM when transitioning – won’t damage PA or ADC  Extremely accurate with low distortion Glitch-FreeTTMM APPLICATIONS • Base Station 2G, 3G, 4G, TDD radiocards • 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 PART# MATRIX Part# F1951 F1950 F1952 Freq range (MHz) 100 - 5000 150 - 5000 100 – 4000 Resolution / Range (dB) 0.50 / 31.5 0.25 / 31.5 0.50 / 15.5 Control Serial Only Serial Only Serial Only IL (dB) -1.2 -1.3 -0.9 Pinout HITT PE HITT FEATURES • Glitch-FreeTM, < 0.6 dB transient overshoot • Spurious Free Design • 3 V to 5.25 V supply • Attenuation Error < 0.2 dB @ 2 GHz • Low Insertion Loss < 1.2 dB @ 2 GHz • Excellent Linearity +65 dBm IP3I • Fast settling time, < 450 ns • Class 2 JEDEC ESD (> 2kV HBM) • Serial Interface 31.5 dB Range • Stable Integral Non-Linearity over temperature • 4x4 mm Thin QFN 24 pin package BLOCK DIAGRAM RF1 RF2 Bias DEC SPI RSTb VDD SDI SDO CLK CSb ORDERING INFORMATION 0.8 mm height package Tape & Reel F1951NBGI8 Green Industrial Temp range © 2021 Renesas Electronics Corporation 1 Sep 28, 2021 ABSOLUTE MAXIMUM RATINGS VDD to GND D[5:0], DATA, CLK, CSb, SDO, RSTb RF Input Power (RF1, RF2) calibration and testing RF Input Power (RF1, RF2) continuous RF operation θJA (Junction – Ambient) θJC (Junction – Case) The Case is defined as the exposed paddle Operating Temperature Range (Case Temperature) Maximum Junction Temperature Storage Temperature Range Lead Temperature (soldering, 10s) -0.3 V to +5.50V -0.3 V to 3.6 V +29 dBm +23 dBm +50 °C/W +3 °C/W TC = -40 °C to +100°C 140 °C -65 °C to +150 °C +260 °C © 2021 Renesas Electronics Corporation 2 Sep 28, 2021 F1951 SPECIFICATION (31.5 dB Range) Specifications apply at VDD = +3.3V, fRF = 2000MHz, TC= +25°C unless otherwise noted, EVKit losses are de-embedde.


IDTF1953NCGI8 F1951 F1951NBGI8


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