The SP5611 is a single chip frequency synthesiser designed for TV tuning systems. Control data is entered in the standard I2C BUS format. The device contains 4 addressable bidirectional open collector ports, one of which is a 3-bit ADC. The information on these ports can be read via the I2C BUS. the device has 4 programmable addresses, programmed by applying a specific input voltage to the P3 address select input. This enables two or more synthesisers to be used in a system.

FEATURES
■ Complete 1·3GHz Single Chip System
■ High Sensitivity RF Inputs
■ Programmable via I2C BUS
■ Low Power Consumption (5V, 20mA)
■ Low Radiation
■ Phase Lock Detector
■ Varactor Drive Amp Disable
■ 4 Bi-directional Controllable Outputs
■ 5-Level ADC
■ Variable I2C BUS Address for Multi-tuner Applications
■ ESD Protection: 4kV, Mil-Std-883C, Method 3015 (1)
■ Switchable 4512/1024 Reference Divider
■ Pin and Function Compatible with SP5511S (2)

APPLICATIONS
■ Satellite TV
■ Cable Tuning Systems
■ VCRs