• 简体中文
• English

TDA5221

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.

Parametric TDA5221 Frequency Band 315.0MHz Channel Requirements per Band Multi-Channel Modulation Type ASK / FSK Digital Baseband / Autonomous RX no Temperature  min  max -40.0°C  105.0°C Frequency Range  min  max 300.0MHz  340.0MHz ASK Receive Sensitivity -113.0dBm FSK Receive Sensitivity -105.0dBm Supply Voltage  min  max 4.5V  5.5V Sales Product Name TDA5221 OPN TDA5221XUMA1 Product Status active and preferred Package Name PG-TSSOP-28 Completely lead free yes Halogen free yes RoHS compliant yes Packing Size 3000 Packing Type TAPE & REEL

Summary of 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) Target Applications: Keyless Entry Systems Remote Control Systems Alarm Systems Low Bitrate Communication Systems

Data Sheet

Product Overview

Application Notes

Product Brief

Additional Product Information

Application Brochure

Material Content SheetInfo

PCB Design Data

Evaluation Boards

Package Data

PCB Design Data

Development Tools