SDA4331X Datasheet (Siemens) - PLL with I2C Bus for AM/FM Receivers

SDA4331X, PLL with I2C Bus for AM/FM Receivers

The SDA 4331X is a radio PLL controlled via I2C Bus for frequency synthesis in the AM and FM range.

3 Circuit Description The reference frequency for the PLL is derived from the quartz oscillator OSC1).

The R-prescaler can be adapted to quartz frequencies of 4, 8 or 10.25 MHz, respectively, yieldi

SDA4331X Features

* 155 MHz FM and 40 MHz AM input frequency 30 mVeff AM and 50 mVeff FM sensitivity Additional open drain ports controlled by I2C Bus 2-pin quartz oscillator Fast phase detector with short anti-backlash pulses P-DSO-24-1 and polarity reversal

* Charge pump current programmable in four steps up