TDA5212 Datasheet, PDF (7/51 Pages) Infineon Technologies AG – ASK/FSK 915MHz Single Conversion Receiver

TDA 5212
preliminary
Product Description
2.1 Overview
The IC is a very low power consumption single chip FSK/ASK Superheterodyne
Receiver (SHR) for receive frequencies between 910 and 920 MHz that is pin
compatible to the ASK Receiver TDA5202. The IC offers a high level of integra-
tion 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
Low Bitrate ISM-band Communication Systems
2.3 Features
Low supply current (I_s = 5.4 mA typ.FSK mode, 4.8 mA typ. ASK mode)
Supply voltage range 5V ±10%
Power down mode with very low supply current (90nA typ.)
FSK and ASK demodulation capability
Fully integrated VCO and PLL Synthesiser
RF input sensitivity ASK -112dBm typ. at 25°C, better than -109dBm over
complete specified operating temperature range (-40 to +85°C)
RF input sensitivity FSK -105dBm typ. at 25°C, better than -102dBm over
complete specified operating temperature range (-40 to +85°C)
Receive frequency range between 910 and 920 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
Specification, May 2003