آر اف (فرکانس رادیویی) و بی‌سیم آی سی‌ فرستنده‌گیرنده آر اف

Product Attributes

Introduction

VI4455 is a high-performance OOK/ASK transmitter for Remote Keyless Entry (RKE) systems. The chip integrates a power amplifier, a monostable circuit, and a phase-locked loop controlled by an internal voltage-controlled oscillator. The monostable circuit is used to control the PLL and power amplifier, enabling fast startup during operation.

Features

• Highly integrated OOK/ASK transmitter
• Maximum output power: 3V / +13 dBm / 32mA (@ 434MHz, DIN full high)
• Auto standby function: enters standby automatically when DIN has no signal input for more than 50ms, current consumption less than 1uA
• Wide input voltage range: 2.0V to 3.6V
• Minimal external components required
• PLL-based transmitter, frequency range: 200MHz to 450MHz
• On-chip monostable circuit
• Package: SOT23-6

Applications

• Keyless entry system remote control
• Garage door opener
• Alarm system
• Security system
• Wireless sensor