DESCRIPTION
The TDA7326 is a PLL frequency synthesizer in CMOS technology that performs all the function of a PLL radio tuning system for FM and AM (LW, MW, SW)

■ FM INPUT AND PRECOUNTER FOR UP TO 140MHz
■ AM INPUT FOR UP TO 40MHz
■ 6-BIT SWALLOW COUNTER, 8-BIT PROGRAMMABLE COUNTER FOR FM AND SW
■ 14-BIT PROGRAMMABLE COUNTER FOR LW AND MW
■ THREE WIRES 8-BIT SERIAL INTERFACE
■ ON-CHIP REFERENCE OSCILLATOR AND COUNTER
■ PROGRAMMABLE SCANNING STEPS FOR AM AND FM
■ DIGITAL PHASE DETECTOR AND LOOP FILTER
■ TWO SEPARATE FREE PROGRAMMABLE FILTER APPLICATIONS AVAILABLE
■ TUNING VOLTAGE OUTPUT 0.5 TO 9.5V
■ PROGRAMMABLE CURRENT SOURCES TO SET THE LOOP GAIN
■ ON-CHIP POWER ON RESET
■ STANDBY MODE