Received Frequency Display for Radio Receivers
Features
.Displays received frequency of each band of FM, MW, LW(LED static display).
. Counts local oscillation frequency and displays received frequency.
.Number of display digits : FM-5 digits, MW-4 digits, LW-3digits.
. Covers intermediate frequencies shown below.
FM : +10.700, +10.725, +10.750, +10.675 MHz
–10.700, –10.725, –10.675, –10.650 MHz
MW, LW : +450 kHz : 10 kHz step display
+450 kHz : 1 kHz step display
+455 kHz : 1 kHz step display
+469 kHz : 1 kHz step display
. Contains blanking circuit to turn off display.
. Contains hold circuit to hold display contents.
. Uses crystal resonator having 7.2 MHz reference frequency
.Uses LB3500 (÷8 prescaler) jointly at the time of FM reception.
. Supply voltage VDD :4.5Vto10V