CHR2244-QDG

CHR2244-QDG RoHS COMPLIANT 5.8 GHz One Antenna Reflective Transponder for Tag GaAs Monolithic Microwave IC Description The CHR2244 is a MMIC transponder dedicated to short range communications at 5.8GHz. It includes all the RF functions for bi-directional transmission and CMOS compatible interfaces. Only one antenna is necessary. Three modes are implemented: STANDBY: ultra low current AM detector, with a reduced bandwidth, providing a wake-up signal on SB_out output. This signal is a DC voltage. This output is active when and only when an AM modulated RF signal is applied to the RF input. DOWNLINK: low current AM detector, with optimized IF bandwidth, providing the demodulated data at the CMOS compatible DATA_out output. UPLINK: multiplier based on a passive reflective mixer. This circuit is manufactured on a MESFET process. It is supplied in plastic package (QFN-24). Main Features 5.8GHz ISM band operating frequency CMOS compatible Ultra low standby current Integrated wake-up circuit High detection sensitivity for downlink Reflective multiplier for uplink Single bias voltage Low cost & high performances plastic package Lead-free, Matt Tin (Green) solder plating T/R MOD WK_in RF Det DATA_out SB_out External components Vcc Transponder block diagram Main Characteristics Tamb = +25°C; Vcc = 3.1V Symbol Parameter Min Typ Max Vcc_sb_i RF_sb_p RF_dl_p BW_dl G_ul BW_ul Standby DC current ( Without RF input signal) Minimum power for Standby mode Minimum power for Downlin...