Overview
The LC72148V is a 3 V version of the LC72146 PLL frequency synthesizer that can easily implement a variety of 3 V power supply tuners, including in-car navigation system receivers based on the VICS FM multiplex system.

Functions
• High-speed programmable divider
    — FMIN: 10 to 180 MHz ... Pulse swallower technique
    — AMIN: 2 to 40 MHz ... Pulse swallower technique 0.5 to 10 MHz ... Direct division technique
• IF counters
    — HCTR: 0.4 to 25 MHz ... Frequency measurement
    — LCTR: 10 to 500 kHz ... Frequency measurement
            1.0 to 20 × 103 Hz ... Period measurement
• Reference frequency
    — One of 12 reference frequencies can be selected (Crystal resonator: 7.2 or 4.5 MHz) 1, 3, 5, 9, 10, 3.125, 6.25, 12.5, 25, 30, 50, and 100 kHz
• Phase comparator
    — Provides dead zone control
    — Built-in unlock detection circuit
    — Built-in deadlock clear circuit
    — Sub-charge pump for high-speed locking
• Built-in MOS transistor for implementing an active lowpass filter
• I/O ports: Five general-purpose I/O ports.
    — Input: 7 pins (maximum)
    — Output: 7 pins (maximum. N-channel: 4 pins, CMOS: 3 pins)
    — A clock time base signal (8 Hz) can be output.
• Serial data I/O
    — Supports communication with a controller in the CCB format.
    — Uses the same serial data as the LC72146.
• Operating ranges
    — Supply voltage: 2.7 to 3.6 V
    — Operating temperature: –40 to +85°C
• Package
    — SSOP24