PE4312中文资料UltraCMOS® RF Digital Step Attenuator数据手册pSemi规格书

描述 Description

The PE4312 is a 50Ω, HaRP™ technology-enhanced 6-bit RF digital step attenuator (DSA) designed for use in 3G/4G wireless infrastructure and other high performance RF applications.
This DSA is a pin-compatible upgraded version of the PE4302 with higher linearity, improved attenuation accuracy and faster switching speed. An integrated digital control interface supports both serial and parallel programming of the attenuation, including the capability to program an initial attenuation state at power-up.
Covering a 31.5 dB attenuation range in 0.5 dB steps, it maintains high linearity and low power consumption from 1 MHz through 4 GHz. PE4312 also features an external negative supply option, and is offered in a 20-lead 4 × 4 mm QFN package. In addition, no external blocking capacitors are required if 0 VDC is present on the RF ports.

特性 Features

• Attenuation: 0.5 dB steps to 31.5 dB
• Safe attenuation state transitions
• Monotonicity: 0.5 dB up to 4 GHz
• High attenuation accuracy
• High linearity: +59 dBm IIP3
• Wide power supply range of 2.3–5.5V
• 1.8V control logic-compatible
• 105°C operating temperature
• Programming modes: Direct parallel, latched parallel and serial
• Unique power-up state selection
• Pin-compatible to PE4302, PE4305 and PE4306
• Package—20-lead 4×4 mm QFN

简介

PE4312属于RF/IF射频/中频RFID的衰减器。由制造生产的PE4312衰减器衰减器旨在降低信号功率，同时尽量减少其对波形的影响。衰减值的范围为 0 dB 至 69 dB，频率范围为 0 至 86 GHz。