The ATEK822P4 from ATEK MIDAS is a Tunable Filter with Tunable Frequency 0.35 to 1.1 GHz, Bandwidth 750 MHz, Rejection 40 dBc, Insertion Loss 2.5 dB, Supply Voltage 3 to 5.5 V. Tags: Surface Mount, Digitally Controlled. More details for ATEK822P4 can be seen below.