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 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 generates a sinusoidal signal suppressing the higher-order harmonics, which reduces the moiré noise considerably.

SDA3302 Maximum Ratings

Parameter	Symbol 2)	Limit Values		Unit	Remarks
Parameter	Symbol 2)	min.	max.	Unit	Remarks
Supply voltage	V_S	– 0.3	6	V
Output PD	V₁	– 0.3	V_S	V
Crystal Q1	V₂	– 0.3	V_S	V
Crystal Q2	V₃	– 0.3	V_S	V
Bus input/output SDA	V₄	– 0.3	6	V
Bus input SCL	V₅	– 0.3	6	V
Port output P7, P6, P5, P4	V_{6, 7, 8, 9}	– 0.3	16	V	open collector
Chip-address switchover	V₁₀	– 0.3	V_S	V	for V_S = 0 V
Port output P2, P1, P0	V_{11, 12, 13}	– 0.3	16	V	for V_S = 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	V_S	V
Bus output SDA	I_4L	– 1	5	mA	open collector
Port output P7, P6, P5, P4	I_{6L, 7L, 8L, 9L}	– 1	5	mA	open collector
Port output P2, P1, P0	I_{11L, 12L,} _13L	– 1	20	mA	open collector
Chip temperature	T_C		125	°C
Total port output current	Z_IL		25	mA
Storage temperature	T_stg	– 40	125	°C
Thermal resistance (system-air)	R_thSA		80	K/W

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

SDA3302 Connection Diagram

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SDA3205, SDA3206, SDA3302

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