TDA5212_06 Datasheet, PDF (7/49 Pages) Infineon Technologies AG – ASK/FSK 915MHz Single Conversion Receiver

TDA 5212
Product Description
2.1 Overview
The IC is a very low power consumption single chip FSK/ASK Superheterodyne
Receiver (SHR) for receive frequencies between 902 and 928 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 902 and 928 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, December 2006