TDA7210 Datasheet, PDF (7/52 Pages) Infineon Technologies AG – Wireless Components ASK/FSK Single Conversion Receiver

TDA7210
Product Description
2.1 Overview
The IC is a very low power consumption single chip FSK/ASK Superheterodyne
Receiver (SHR) for the frequency bands 810 to 870 MHz and 400 to 440 MHz
that is pin compatible with the Receiver TDA5210. 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, a data comparator (slicer) and a peak detector. Addi-
tionally there is a power down feature to save battery life.
2.2 Application
■ Keyless Entry Systems
■ Remote Control Systems
■ Alarm Systems
■ Low Bitrate Communication Systems
2.3 Features
■ Low supply current (at 868MHz I_s = 5.9 mA typ. FSK mode, 5.2mA typ. 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
■ RF input sensitivity ASK < –107dBm
■ RF input sensitivity FSK < –100dBm
■ Selectable frequency ranges 810-870 MHz and 400-440 MHz
■ Selectable reference frequency
■ Limiter with RSSI generation, operating at 10.7MHz
■ 2nd order low pass data filter with external capacitors
■ Data slicer with self-adjusting threshold
Wireless Components
2-2
Data Sheet, December 2008