器件名称:
LC72191
功能描述:
PLL Frequency Synthesizer for Electronic Tuning in Car Stereo Tuners
文件大小:
194.96KB 共16页
简 介:
Ordering number : EN 3985C CMOS LSI LC72191, 72191M, 72191JM PLL Frequency Synthesizer for Electronic Tuning in Car Stereo Tuners Overview The LC72191, LC72191M and LC72191JM are PLL frequency synthesizers for electronic tuning. The LC72191, LC72191M and LC72191JM are optimal for AM/FM tuner circuits that require high mounting densities. Package Dimensions unit: mm 3067-DIP24S [LC72191] Features Designed for use in car stereos, the LC72191 provides a rich set of reference frequencies, I/O ports, a generalpurpose counter, and an unlock detection circuit. Functions Programmable dividers — FMIN pin: 130 MHz at 70 mVrms and 160 MHz at 100 mVrms input (built-in prescaler) — AMIN pin: Pulse swallower and direct division techniques Reference frequencies: Ten selectable frequencies: 1, 5, 9, 10, 3.125, 6.25, 12.5 25, 50 and 100 kHz Output ports: 7 pins Complementary outputs: 2 pins N-channel open drain outputs: 5 pins Input ports: 2 pins General-purpose counter: For measuring IF and other signals (Also used for station detection when functioning as an IF counter.) — HCTR pin: Frequency measurement (for inputs up to 70 MHz) — LCTR pin: Frequency and period measurement PLL unlock detection circuit Detects phase differences of 0.55, 1.11, 2.22 and 3.33 s. Controller clock output: 400 kHz Clock time base output: 8 Hz Serial data I/O — Supports CCB format communication with the system controller. Package: LC72191: DIP24S LC72191M: MFP24 LC72191JM: MFP24S CCB is a trademar……
