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

Product Attributes

Introduction

The PT4308 is a compact, fully integrated OOK／ASK receiver with ±4 KV ESD （HBM） protection for 433.92 MHz frequency band and requires few external components. The PT4308 consists of a low-noise amplifier （LNA）, an image-rejection mixer （IRM）, a built-in channel-select filter （CSF）, an OOK／ASK demodulator, a data filter, and a data slicing comparator. The local oscillator （LO） sub-system incorporates a monolithic VCO, a ÷32 feedback divider, a loop filter and a fast start-up reference oscillator to form a complete phase-locked loop-based frequency synthesizer for single channel applications. The PT4308 is available in an 8-pin SOP package and is specified over the temperature range from -40 to +85 °C.

Features

• Normal operating of 4.3 mA at 433.92 MHz
• Requires few external components
• Achieves sensitivity of –114 dBm （peak ASK signal level）
• Supply voltage range: 2.1 to 5.5 V
• Supports data rates up to 10 Kb/s
• Wide input dynamic range with automatic gain control handling
• Image-rejection ratio of 25 dB
• ESD protection level up to ±4 KV for HBM, ±400 V for MM and ±1 KV for CDM

Applications

• Automotive Remote Keyless Entry （RKE）
• Remote control
• Garage door and gate openers
• Suitable for applications that must adhere to either the European ETSI-300-220 or the North American FCC （Part 15）regulatory standards