آر اف (فرکانس رادیویی) و بی‌سیم تضعیف‌کننده‌

Product Attributes

Introduction

A fully monolithic analog voltage controlled attenuator (VCA) featuring exceptional linearity over a typical temperature-compensated 25dB gain control range and low insertion loss of 1.0dB typical. It incorporates a revolutionary new circuit architecture to solve a long standing industry problem: high IP3, high attenuation range, low DC current, broad bandwidth, and temperature-compensated linear in dB control voltage characteristic. This voltage controlled attenuator is controlled by a single positive control voltage with on chip DC conditioning circuitry. The slope polarity of the control voltage versus gain is selectable. The attenuator draws a very low 2.5mA current. It is matched to 50Ω over its rated control range and frequency with no external matching components require. This product incorporates the complete solution in a small 3mm x 3mm QFN package that reduces the footprint in area and reduces the DC power over conventional PIN diode approaches.

Features

• Patented Circuit Architecture
• Broadband 50MHz to 6000MHz Frequency Range
• Low Minimum Insertion Loss (1.0dB Typical at 2GHz)
• 25dB Attenuation Range
• +40dBm IIP3 Typical
• +75dBm IIP2 Typical
• High 1dB Compression Point >+24dBm
• Low Supply Current 2.5mA Typical
• 3V to 5V Power Supply
• Linear in dB Control Characteristic
• Internal Temperature Compensation
• Low Distortion with -65dBc CSO, CTB and XMOD
• Class 2 ESD (2000V HBM)
• Complete Solution in a Small 3mm x 3mm, QFN Package

Applications

• Cellular, 3G Infrastructure
• WiBro, WiMax, LTE
• Microwave Radio
• High-linearity Power Control
• Cable Modems
• CATV