Advance Information
PLL Frequency Synthesizer with Serial Interface
CMOS

Thenew MC145170–1 is pin–for–pin compatible with the MC145170. A comparisonof the two parts is shown in the table below. The MC145170–1 is recommended for new designs. The MC145170–1 is a single–chip synthesizer capable of direct usage in the MF, HF, and VHF bands. A special architecture makes this PLL the easiest to programin the industry. Either a bit–or byte–oriented format may be used. Due to the patented BitGrabberregisters, no address/steering bits are required for random accessof the three registers. Thus, tuning can be accomplished via a 2–byte serial transfer to the 16–bit N register.

Operating Voltage Range: 2.7 to 5.5 V
Maximum Operating Frequency:
  185 MHz @ Vin= 500 mVpp, 4.5 V Minimum Supply
  100 MHz @ Vin= 500 mVpp, 3.0 V Minimum Supply
Operating Supply Current:
  0.6 mA @ 3.0 V, 30 MHz
  1.5 mA @ 3.0 V, 100 MHz
  3.0 mA @ 5.0 V, 50 MHz
  5.8 mA @ 5.0 V, 185 MHz
Operating Temperature Range: -40 to 85°C
R Counter Division Range: 1 and 5 to 32,767
N Counter Division Range: 40 to 65,535
Direct Interface to Motorola SPI and National MICROWIRE Serial DataPorts
Chip Complexity: 4800 FETs or 1200 Equivalent Gates
See Application Notes AN1207/D and AN1671/D