SDA4331

PLL with I2C Bus for AM/FM Receivers SDA 4331X 1 1.1 Overview 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 to 4.5 mA Frequency resolution of 1, 5 and 10 kHz AM and 12.5, 25 and 50 kHz FM P-DSO-24 package Type SDA 4331X 1.2 Application Ordering Code Q67100-H5139 Package P-DSO-24-1 The SDA 4331X provides separated input and output ports for AM and FM and is well suited for extremely fast loop settling times in the FM mode. Semiconductor Group 1 04.96 SDA 4331X 1.3 Pin Configuration (top view) P-DSO-24-1 Figure 1 Semiconductor Group 2 04.96 SDA 4331X 1.4 Pin Definitions and Functions Input (I) Output (O) I I/O I Function Supply voltage digital (5 V) Clock I2C Bus Data I2C Bus Address selection, sets the LSB of the IC-address 10 V open drain output, controlled via I2C Bus 10 V open drain output, indicating the operation mode (H = AM) Input for the FM signal from VCO Ground analog I Input for the AM signal from VCO Pin No. Symbol 1 2 3 4 5 6…9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 VDD1 SCL SDA A0 N.C. SA1 … SA4 O AM/FM FMIN GNDAN AMIN N.C. N.C. O I IREF PDFM PDAM PDFMA PDAMA I O O O O Reference current, setting the base current level for the charge pumps FM charge pump output AM cha...