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

Product Attributes

Features

• The MAX7030 crystal-based, fractional-N transceiver is designed to transmit and receive ASK/OOK data at factory-preset carrier frequencies of 315MHz or 433.92MHz with data rates up to 33kbps (Manchester encoded) or 66kbps (NRZ encoded).
• This device generates a typical output power of +10dBm into a 50Ω load and exhibits typical sensitivity of -114dBm.
• The MAX7030 features separate transmit and receive pins (PAOUT and LNAIN) and provides an internal RF switch that can be used to connect the transmit and receive pins to a common antenna.
• The MAX7030 transmit frequency is generated by a 16-bit, fractional-N, phase-locked loop (PLL), while the receiver’s local oscillator (LO) is generated by an integer-N PLL.
• This hybrid architecture eliminates the need for separate transmit and receive crystal reference oscillators because the fractional-N PLL is preset to be 10.7MHz above the receive LO.
• Retaining the fixed-N PLL for the receiver avoids the higher current-drain requirements of a fractional-N PLL and keeps the receiver current drain as low as possible.
• All frequency-generation components are integrated on-chip, and only a crystal, a 10.7MHz IF filter, and a few discrete components are required to implement a complete antenna/digital data solution.
• The MAX7030 is available in a small, 5mm×5mm, 32-pin thin QFN package, and is specified to operate over the automotive -40°C to +125°C temperature range.
• +2.18 to +3.68 or +4.5V to +5.5V Single-Supply Operation
• Single-Crystal Transceiver
• Factory-Preset Frequency (No Serial Interface Required)
• ASK/OOK Modulation
• +10dBm Output Power into 50Ω Load
• Integrated TX/RX Switch
• Integrated Transmit and Receive PLL, VCO, and Loop Filter

• 45dB Image Rejection

• Typical RF Sensitivity: -114dBm
• Selectable IF Bandwidth with External Filter
• <12.5mA Transmit-Mode Current
• <6.7mA Receive-Mode Current
• <800nA Shutdown Current
• Fast-On Startup Feature, <250μs
• Small, 32-Pin, Thin QFN Package

Applications

• 2-Way Remote Keyless Entry
• Security Systems
• Home Automation
• Remote Controls
• Remote Sensing
• Smoke Alarms
• Garage Door Openers
• Local Telemetry Systems