1.1 GHZ PLL FREQUENCY SYNTHESIZER

The MC145193 is recommended for new designs and offers reduced power consumption. The counters are programmed via a synchronous serial port which is SPI compatible. The serial port is byte-oriented to facilitate

control via an MCU. Due to the innovative BitGrabber Plusregisters, the MC145193 may be cascaded with other peripherals featuring BitGrabber Plus without requiring leading dummy bits or address bits in the serial data stream. In addition, BitGrabber Plus peripherals may be cascaded with existing BitGrabberperipherals.

•Maximum Operating Frequency: 1100 MHz @ – 10 dBm

•Operating Supply Current: 3 mA Nominal at 3.0 V

•Operating Supply Voltage Range (VDD, VCC, VPDPins): 2.7 to 5.5 V

•Current Source/Sink Phase Detector Output: 1.7 mA @ 5.0 V or 1.0 mA @ 3.0 V

•Gain of Current Source/Sink Phase/Frequency Detector Controllable via Serial Port

•R Counter Division Range: 1 and 5 to 8191

•Dual–Modulus Capability Provides Total Division up to 262,143

•High–Speed Serial Interface: 4 Mbps

•Output A Pin, When Configured as Data Out, Permits Cascading of Devices

•Two General–Purpose Digital Outputs:

Output A: Totem–Pole (Push–Pull) with Four Output Modes

Output B: Open–Drain

•Patented Power–Saving Standby Feature with Orderly Recovery for Minimizing Lock Times, Standby Current: 30 µA

•See App Note AN1253/D for Low–Pass Filter Design, and AN1277/D for Offset Reference PLLs for Fine Resolution or Fast Hopping