BCT2614S

Frequency Synthesizer for AM/FM Electronic Tuning

General Description

The BCT2614S is a frequency synthesizer digital PLL chip used for electronic tuning at 3 Volt AM & FM DTS radios. A high impedance MOS amplifier is integrated to easy the loop filter design and BCT2614S is designed to work from 1.8V to 3.6V supply voltage. The BCT2614S is made using advanced CMOS process for low voltage, low power and low radiation operations.

Features

• Low supply voltage: from 1.8 to 3.6V
• High speed programmable frequency divider
• - FMIN : 10 to 180 MHz
• - AMIN : 2 to 40 MHz (MW)
• - IFIN : 0.4 to 12 MHz
• Seven Reference Frequency Selectable:
• 1 kHz, 3 kHz, 3.125 kHz, 5 kHz, 6.35 kHz, 12.5 kHz and 25 kHz. ( reference to 75kHz low radiation oscillator)
• Three State Phase Detector: with Built-inunlock detection circuit
• Built-in Linear MOS input amplifier for forming an active low pass filter
• 3 Dedicated Output Ports
• 3 Wire Serial Data Input : CE, CK and DA
• Pb-free SO16L package

Applications

• AM / MW / FM radio tuner
• Radio tuner module
• PLL frequency synthesizers

Package

Typical Application Circuit