SC9256S

SC9256 PLL FOR DIGITAL TUNING SYSTEM DESCRIPTION The SC9256 is phase-locked loop (PLL) LSIs for digital tuning systems (DTS) with built in 2 modulus prescalers. All functions ate controlled through 3 serial bus lines. These LSIs are used to configure high-performance digital tuning system. DIP-16-300-2.54 FEATURES * Optimal for configuring digital tuning systems in high-fi tuners and car stereos. * Built-in prescalers. Operate at input frequency ranging from 30~150 MHz during FMIN input (with 2 modulus prescaler) and at 0.5~40MHz during AMIN input (with 2 modulus prescaler or direct dividing). * 16 bit programmable counter, dual parallel output phase comparator, crystal oscillator and reference counter. * 3.6MHz, 4.5MHz, 7.2MHz or 10.8MHz crystal oscillators can be used. * 15 possible reference frequencies. ( When using 4.5MHz crystal) * Built-in 20 bit general-purpose counter for such uses as measuring intermediate frequencies (IFIN1 and IFIN2) * High-precision (±0.55~±7.15µs)...