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

Product Attributes

Introduction

The VT831R is a next-generation, low-power, high-performance, plug-and-play OOK RF receiver requiring no register configuration, designed for wireless reception applications in the 300 - 480MHz ISM band. The VT831R supports data rates of 1 - 5kbps, making it ideally suited for pairing with low-cost encoder-based or MCU-based transmitters. The device operates over a supply voltage range of 2.1 - 5.5V, within which receiver performance remains largely unaffected by supply voltage variations. Operating at 433.92MHz, the chip achieves a receive sensitivity of -113dBm at a current consumption of only 5.3mA. By selecting crystals of different frequencies, the device can operate at the commonly used 315MHz frequency or other RF frequencies within the applicable band. The VT831R is available in an SOP8 package.

Features

• Operating frequency band 300 - 480 MHz
• Data rate range 1 - 5 kbps
• Sensitivity -113 dBm (3 kbps), 0.1% BER
• Receiver bandwidth 500 kHz @ 433.92 MHz, 370 kHz @ 315 MHz
• Ultra-low startup time 3.8 ms, suitable for low-power applications
• Image rejection ratio 33 dB
• Maximum input signal 10 dBm
• Supply voltage 2.1 – 5.5 V
• Low power consumption 5.0 mA @ 315 MHz, 5.3 mA @ 433.92 MHz

Applications

• Remote access control systems
• Tire pressure monitoring devices
• Remote-controlled fans and lighting switches
• Wireless sensor data transmission
• IR receiver replacement
• Toy remote control