UM9552 Datasheet | Microsemi

580 Pleasant St. Watertown, MA 02472 PH: (617) 926-0404 FAX: (617) 924-1235 Features - - - - Low Frequency Attenuator HF/LF Band Operation Long Lifetime (70 µ s typ.) Very Low Distortion (IP3 @ 455 KHz = < 60 dBm) PIN DIODE ATTENUATOR Description The UM9552 is a very long minority carrier lifetime (70 µ s typical) PIN DIODE that has been developed for low HF or LF Band Attenuator Applications. They have been evaluated for attenuator linearity and distortion characteristics in a Bridge Tee Attenuator Circuit at 455 KHz (the mon intermediate frequency for AM transmitters and receivers). When the UM9552’s are used as the two variable resistors in the Bridged Tee Circuit, the...