SDA3302

Features:

1-chip system for MPU control (I²C bus)
 4 programmable chip addresses
 Short pull-in time for quick channel switch-over and optimized loop stability
 Charge pump output with switch off option
 Up to 3*) high current band switch outputs (20 mA)
 Up to 4*) output ports (5 mA) *) depending on version

Pinout




Specifications

Parameter	Symbol 2)	Limit Values		Unit	Remarks
		min.	max.
Supply voltage	VS	0.3	6	V
Output PD	V1	0.3	VS	V
Crystal Q1	V2	0.3	VS	V
Crystal Q2	V3	0.3	VS	V
Bus input/output SDA	V4	0.3	6	V
Bus input SCL	V5	0.3	6	V
Port output P7, P6, P5, P4	V6, 7, 8, 9	0.3	16	V	open collector
Chip-address switchover	V10	0.3	VS	V	for VS = 0 V
Port output P2, P1, P0	V11, 12, 13	0.3	16	V	for VS = 0 V
Signal input UHF/VHF	V15	0.3	0.3	V
Reference input REF	V16	0.3	0.3	V
Output active filter UD	V18	0.3	VS	V
Bus output SDA	I4L	1	5	mA	open collector
Port output P7, P6, P5, P4	I6L, 7L, 8L, 9L	1	5	mA	open collector
Port output P2, P1, P0	I11L, 12L, 13L	1	20	mA	open collector
Chip temperature	TC		125	°C
Total port output current	ZIL		25	mA
Storage temperature	Tstg	40	125	°C
Thermal resistance (system-air)	RthSA		80	K/W

Description

Combined with a VCO (tuner) the SDA 3302 device, with four hardware-switched chip addresses, forms a digitally programmable phase-locked loop for use in television sets with PLL frequency-synthesis tuning.

The PLL permits precise crystal-controlled setting of the frequency of the tuner oscillators SDA 3302 between 16 and 1300 MHz in increments of 62.5 kHz. The tuning process is controlled by a microprocessor via an I2C bus. The crystal oscillator SDA 3302 generates a sinusoidal signal suppressing the higher-order harmonics, which reduces the moiré noise considerably.