BA4425FRF/IF射频/中频RFID的射频前端（LNA+PA）规格书PDF中文资料

BA4425F属于RF/IF射频/中频RFID的射频前端（LNA+PA）。由罗姆半导体集团制造生产的BA4425F射频前端（LNA + PA）本系列中的产品是各种集成电路，其中集成了射频 (RF) 信号链连接到系统天线的部分中常见的一种或多种功能，如低噪声放大器 (LNA) 和可编程放大器 (PA)。任何给定器件所含的实际功能各不相同，相比旨在提供更高应用灵活性的器件，针对相对较窄应用的器件通常集成更大一部分必要的信号链。

The BA4425F is a monolithic IC designed for FM front end use. It consists of an RF amplifier circuit, mixer circuit, oscillation circuit, and IF buffer amplifier.

特性 Features

1) Uses double balance mixer to improve intermodulation characteristics.

2) Includes a clamp diode in the mixer output.

3) Local oscillation buffer on-chip for improved re sponse to strong input.

4) The output impedance of the IF buffer is matched with the ceramic filter impedance at 330Ω.

5) Mixer input coupling capacitor included on-chip.

6) Includes a feedback capacitor for the local oscillation circuit.

7) Reception of VHF terrestrial TV channels is possible.

8) Compact SOP 8-pin package.

Applications

FM radios

Radio cassette players

Home stereos

Headphone stereos