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TC9257AFG

Toshiba
Part Number TC9257AFG
Manufacturer Toshiba
Description PLL
Published Aug 11, 2006
Detailed Description TC9256, 57APG/AFG TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC9256APG, TC9256AFG, TC9257APG, TC9257AFG ...
Datasheet PDF File TC9257AFG PDF File

TC9257AFG
TC9257AFG


Overview
TC9256, 57APG/AFG TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC9256APG, TC9256AFG, TC9257APG, TC9257AFG PLL for DTS The TC9256APG, TC9256AFG, TC9257APG and TC9257AFG are phase-locked loop (PLL) LSIs for digital tuning systems (DTS) with built-in two-modulus prescalers.
All functions are controlled through three serial bus lines.
These LSIs are used to configure high-performance digital tuning systems.
Features • Suitable for use in digital tuning systems in high-fi tuners and car stereos.
• Built-in prescalers operate at an input frequency ranging from 30 to 150 MHz during FMIN input (with two-modulus prescaler) and at 0.
5 to 40 MHz during AMIN input (with two-modulus prescaler or direct dividing) • 16-bit programmable counter, dual parallel output phase comparator, crystal oscillator and reference counter • 3.
6 MHz, 4.
5 MHz, 7.
2 MHz or 10.
8 MHz crystal oscillators can be used.
• 15 possible reference frequencies (when using 4.
5 MHz crystal):ref.
= 0.
5 k, 1 k, 2.
5 k, 3 k, 3.
125 k, 3.
90625 k, 5 k, 6.
25 k, 7.
8125 k, 9 k, 10 k, 12.
5 k, 25 k, 50 k and 100 kHz.
• Built-in 20-bit general-purpose counter for such uses as measuring intermediate frequencies (IFIN1 and IFIN2) and low-frequency pilot signal cycles (SCIN).
(No cycle measurement function is available on the TC9256APG and TC9256AFG.
) • High-precision (±0.
55 to ±7.
15 µs) PLL phase error detection • Numerous general-purpose I/O pins for such uses as peripheral circuit control • Four N-channel open-drain output ports (OFF withstanding voltage: 12 V) for such uses as control signal output.
(TC9256APG and TC9256AFG have only three ports.
) • Standby mode function (turns off FM, AM and IF amps) to save current consumption • All functions controlled through three serial bus lines • CMOS structure with operating power supply range of VDD = 5.
0 ± 0.
5 V.
• 16-pin DIP (TC9256APG), 20-pin DIP (TC9257APG), 16-pin SOP (TC9256AFG), 20-pin SOP (TC9257AFG) packages TC9256APG TC9257APG TC9256AFG TC9257AFG Weight P...


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