TDA7427A集成電路（IC）的時鐘發(fā)生器PLL頻率合成器規(guī)格書PDF中文資料

TDA7427A屬于集成電路（IC）的時鐘發(fā)生器PLL頻率合成器。由意法半導體集團制造生產(chǎn)的TDA7427A時鐘發(fā)生器，PLL，頻率合成器時鐘發(fā)生器、PLL 和頻率合成器集成電路 (IC) 可為邏輯器件提供參考信號的穩(wěn)定定時脈沖，這些器件包括計算機、微控制器、數(shù)據(jù)通信系統(tǒng)和圖形/視頻發(fā)生器。這些集成電路可能包括緩沖器、驅(qū)動器、分頻器、倍頻器、多路復用器、合成器、扇出分配器和預分頻器。

DESCRIPTION

The TDA7427A is a PLL frequency synthesizer with an additional IF counting system that performs all the functions needed in a complete PLL radio tuning system for conventional and high speed RDS tuners. The device has dedicated outputs for IN-LOCK detection and Search/Stop station.

■ ON-CHIP REFERENCE OSCILLATOR AND PROGRAMMABLE IF COUNTER

■ VHF INPUT AND PRECOUNTER FOR FREQUENCIES UP TO 290MHz

(SUITABLE FOR DAB APPLICATION)

■ HF INPUT FOR FREQUENCIES UP TO 64MHz (SHORT WAVE BAND)

■ IN-LOCK DETECTOR FOR SEARCH/STOP STATION FUNCTION

■ STAND-BY MODE FOR LOW POWER CONSUMPTION

■ HIGH CURRENT SOURCE FOR 0.5ms LOCK-IN TIME

■ DIGITAL PORT EXTENSION WITH SIX OUTPUTS FOR FLEXIBILITY IN APPLICATION

■ FULLY PROGRAMMABLE BY I2C BUS