آر اف (فرکانس رادیویی) و بی‌سیم آی‌سی آر‌اف‌آی‌دی و کنترل دسترسی

Product Attributes

Introduction

VT21XR is a highly integrated, low-power monolithic ASK/OOK RF receiver IC. All RF signal reception functions are fully integrated on-chip to achieve the most reliable reception performance with minimal external components and lowest cost. It is therefore a true single-chip receiver in the sense of "RF modulated signal input, digital demodulated signal output."

The VT21XR comes in a 16-pin package, operates over a supply voltage range of 1.8~5.5V, draws less than 5.5mA operating current, features a 1.8ms startup time, and achieves a maximum receive sensitivity of -115dBm, making it well suited for a wide range of low-power applications. All RF and IF tuning is performed automatically on-chip, eliminating manual tuning processes during development and production, thereby reducing cost and accelerating time to market.

Features

• Operating frequency band 300 - 450 MHz
• Data rate range 1 - 20 kbps
• Sensitivity -115 dBm (3 kbps), 0.1% BER
• Receiver bandwidth 500 kHz @ 433.92 MHz, 400 kHz @ 315 MHz
• Image rejection mixer
• Analog RSSI output
• Integrated IF filter
• Excellent selectivity and noise suppression
• Supply voltage 1.8 – 5.5 V
• Low power consumption 4.5mA @ 315 MHz, 5.3mA @ 433.92 MHz
• Ultra-low startup time 1.8 ms (dependent on CAGC capacitor value)

Applications

• Remote access control systems
• Tire pressure monitoring devices
• Remote fan and lighting switches
• Wireless sensor data transmission
• Infrared receiver replacement
• Toy remote control