Overview

Description

The F2258 is a low insertion loss Voltage Variable RF Attenuator (VVA) covers a broad frequency range from 50 MHz to 6000 MHz.  In addition to providing low insertion loss, the F2258 provides high linearity and low return loss performance over entire frequency, voltage control and attenuation ranges. The device uses a single positive supply voltage of 3.15 V to 5.25 V.  Other features include the VMODE pin allowing either positive or negative voltage control slope vs attenuation and multi-directional operation meaning the RF input can be applied to either RF1 or RF2 pins.  This device has a wide control voltage range using either positive or negative control voltage slope.

Features

  • Low Insertion Loss: 1.4 dB @ 2000 MHz
  • Typical / Min IIP3:  65 dBm / 47 dBm
  • Typical / Min  IIP2:  95 dBm / 87 dBm
  • 33.6 dB Attenuation Range 
  • Bi-directional RF ports
  • +34.4 dBm Input P1 dB compression
  • VMODE pin allows either positive or negative attenuation control response
  • Linear-in-dB attenuation characteristic
  • Supply voltage: 3.15 V to 5.25 V
  • VCTRL range: 0 to 3.60 V (when Vdd = 3.9 to 5.25 V), 0 to (Vdd-0.3 V) (when Vdd = 3.15 to 3.90 V)
  • +105°C max operating temperature
  • 3x3, 16-pin TQFN package

Comparison

Applications

Documentation

Type Title Date
Datasheet PDF 2.16 MB
Guide PDF 2.24 MB
Product Brief PDF 395 KB
Product Change Notice PDF 5.71 MB
Product Change Notice PDF 5.61 MB
Product Change Notice PDF 36 KB
Product Change Notice PDF 88 KB
Product Change Notice PDF 45 KB
Product Change Notice PDF 45 KB
9 items

Design & Development

Boards & Kits

Boards & Kits

Models

Models

Type Title Date
Model - S-parameter ZIP 2.70 MB
1 item

Support

IDT RF Product Benefits Overview

Hello, my name is Dan Terlep. I'm a Product Definer in IDT's RF group. What I'm going to talk about are some of the customer benefits of IDT's technical innovations used in RF products. These are unique innovations that differentiate our products from competitive parts. Up to 10x improvement in RF performance can be obtained when using these devices in your designs. This technology is highly desired by equipment vendors and is protected by patents.

Glitch-free technology essentially eliminates the transient overshoot that can occur during mSv attenuation state transitions of standard digital step attenuators. Flat-noise technology maintains near constant noise performance [inaudible 00:00:48] reduced in our variable gain amplifiers, thus optimizing system level signal-to-noise performance. Zero-distortion technology practically eliminates intermodulation distortion in our RF mixers and amplifiers, enhancing the system's quality of service. Kz refers to constant impedance technology, which has implemented a new line of RF switches that allows 'hot switching' in TDD systems.

Additional benefits of using IDT's RF solutions include: enable screen networks with minimal power consumption; allow scaling from macrocells to microcells using the same device with reduced voltage, reduced current, or both; improves reliability by replacing gallium arsenite with silicon; improves data throughput by optimizing signal-to-noise performance and overall dynamic range; tolerates higher operating temperature than competitive devices.

Note that IDT's RF cards are used by all major cellular 3G and 4G equipment manufacturers for systems deployed all over the world. IDT's advanced RF portfolio using these technologies includes: mixers, digital step attenuators, RF switches, variable gain amplifiers, and modulators. These are silicon monolithic devices offered in QFN packages.

In summary, IDT's RF portfolio replaces gallium arsenite parts, results in higher reliability, provides better signal-to-noise performance, faster settling times, eliminates glitching and third-order intermodulation distortion, reduces DC power consumption, and operates at higher temperatures. Thank you for your time, and please make sure to visit IDT's RF website for a more complete look at our product portfolio. For additional information and support, please use the email shown.