TDA5221数据手册RF/IF射频/中频RFID的射频接收器规格书PDF

描述 Description

The IC is a very low power consumption single chip FSK/ASK Superheterodyne Receiver (SHR) for the frequency band 300 to 340 MHz. The IC offers a high level of integration and needs only a few external components. The device contains a low noise amplifier (LNA), a double balanced mixer, a fully integrated VCO, a PLL synthesiser, a crystal oscillator, a limiter with RSSI generator, a PLL FSK demodulator, a data filter, an advanced data comparator (slicer) with selection between two threshold modes and a peak detector. Additionally there is a power down feature to save current and extend battery life, and two selectable alternatives of generating the data slicer threshold.

特性 Features

• Low supply current (I s = 6.4 mA typ. in FSK mode, I s = 5.6 mA typ. in ASK mode)

• Supply voltage range 5V ±10%

• Power down mode with very low supply current (50nA typ.)

• FSK and ASK demodulation capability

• Fully integrated VCO and PLL Synthesiser

• ASK sensitivity better than -110 dBm over specified temperature range (- 40 to +105°C)

• Selectable frequency ranges 300-320 MHz and 320-340 MHz

• Switchable between two different frequency channels

• Limiter with RSSI generation, operating at 10.7MHz

• Selectable reference frequency

• 2nd order low pass data filter with external capacitors

• Data slicer with self-adjusting threshold

• FSK sensitivity better than -102 dBm over specified temperature range (- 40 to +105°C)

优势:

应用 Application

• Keyless Entry Systems

• Remote Control Systems

• Alarm Systems

• Low Bitrate Communication Systems

简介

TDA5221属于RF/IF射频/中频RFID的射频接收器。由制造生产的TDA5221射频接收器RF 接收器用于接收已调制的射频信号并对其进行解调，然后将数据传送到系统中进行处理。频率范围是 AM、FM、WB、0 Hz 至 64 GHz，数据速率为 250 bps 至 16 Gbps，数据接口包括连接器、I2C、I2S、引脚焊盘、并行、PCB、串行、焊盘、SPI、UART 和 USB。