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TDA7427 Datasheet Am-fm Radio Frequency Synthesizer And If Counter

Manufacturer: STMicroelectronics

Overview: ® TDA7427 AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER 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.

General Description

The TDA7427 is a PLL frequency synthesizer BLOCK DIAGRAM DIP20 SO20 ORDERING NUMBERS: TDA7427(DIP20) TDA7427D (SO20) with an additional IF counting system that performs all the functions needed in a plete PLL radio tuning system for conventional and high speed RDS tuners.

The device has dedicated outputs for IN-LOCK detection and Search/Stop station.

13 FM_IN 16 SWITCH AM/FM HFREF 14 SWITCH SWM/DIR SWITCH SWM/DIR PHASE P CHARGE PUMP + VDD1 20 PRECOUNTER :32/33 5 BIT PROG.

TDA7427 Distributor