MC145202
MC145202 is Low-Voltage 2.0 GHz PLL Frequency Synthesizer manufactured by Motorola Semiconductor.
features a single- ended current source/sink phase detector A output and a double- ended phase detector B output. Both phase detectors have linear transfer functions (no dead zones). The maximum current of the single- ended phase detector output is determined by an external resistor tied from the Rx pin to ground. This current can be varied via the serial port. Slew- rate control is provided by a special driver designed for the REFout pin. This minimizes interference caused by REFout. This part includes a differential RF input that may be operated in a single- ended mode. Also featured are on- board support of an external crystal and a programmable reference output. The R, A, and N counters are fully programmable. The C register (configuration register) allows the part to be configured to meet various applications. A patented feature allows the C register to shut off unused outputs, thereby minimizing system noise and interference. In order to have consistent lock times and prevent erroneous data from being loaded into the counters, on- board circuitry synchronizes the update of the A register if the A or N counters are loading. Similarly, an update of the R register is synchronized if the R counter is loading. The double- buffered R register allows new divide ratios to be presented to the three counters (R, A, and N) simultaneously.
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- Maximum Operating Frequency: 2000 MHz @
- 10 d Bm Operating Supply Current: 4 m A Nominal at 3.0 V Operating Supply Voltage Range (VDD and VCC Pins): 2.7 to 5.5 V Operating Supply Voltage Range of Phase Detectors (VPD Pin): 2.7 to 5.5 V Current Source/Sink Phase Detector Output Capability: 1.7 m A @ 5.0 V 1.0 m A @ 3.0 V Gain of Current Source/Sink Phase/Frequency Detector Controllable via Serial Port Operating Temperature Range:
- 40 to + 85°C 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...
