Infineon Technologies TDA5250D2
The IC is a low power consumption single chip FSK/ASK Transceiver for half duplex low datarate communication in the 868-870MHz band. The IC offers a very high level of integration and needs only a few external components.GENERAL DESCRIPTION
It contains a highly efficient power amplifier, a low noise amplifier (LNA) with AGC, a double balanced mixer, a complex direct conversion stage, I/ Q limiters with RSSI generation, an FSK demodulator, a fully integrated VCO and PLL synthesizer, a tuneable crystal oscillator, an onboard data filter, a data comparator (slicer), positive and negative peak detectors, a data rate detection circuit and a 2/3-wire bus interface. Additionally there is a power down feature to save battery power.FEATURES
● Low supply current (Is = 9mA typ. receive, Is = 12mA typ. transmit mode)● Supply voltage range 2.1 - 5.5V
● Power down mode with very low supply current consumption
● FSK and ASK modulation and demodulation capability
● Fully integrated VCO and PLL synthesizer and loop filter on-chip with on chip crystal oscillator tuning
● I2C/3-wire µController Interface
● On-chip low pass channel select filter and data filter with tuneable bandwidth
● Data slicer with self-adjusting t...