Specifications
| Symbol |
Parameter |
Value |
Unit |
| VDD |
DC Supply Voltage |
0.5 to + 5.5 |
V |
| Vin |
DC Input Voltage |
0.5 to VDD + 0.5 |
VV |
| Vout |
DC Output Voltage |
0.5 to VDD + 0.5 |
V |
| Iin |
DC Input Current, per Pin |
± 10 |
mA |
| Iout |
DC Output Current, per Pin |
± 20 |
mA |
| IDD |
DC Supply Current, VDD and VSS Pins |
± 30 |
mA |
| PD |
Power Dissipation, per Package |
300 |
mW |
| Tstg |
Storage Temperature |
65 to + 150 |
|
| TL |
Lead Temperature, 1 mm from Case
for 10 seconds |
260 |
|
* Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the limits in the Electrical Characteristics ables or Pin Descriptions section.
DescriptionThe new MC1451701 is pinforpin compatible with the MC145170. A omparison of the two parts is shown in the table below. The MC1451701 is ecommended for new designs.
The MC1451701 is a singlechip synthesizer capable of direct usage in th MF, HF, and VHF bands. A special architecture makes this PLL the easiest to rogram in the industry. Either a bit or byteoriented format may be used. Due o the patented BitGrabberE registers, no address/steering bits are required for andom access of the three registers. Thus, tuning can be accomplished via a byte serial transfer to the 16bit N register.
The MC1451701 features fully programmable R and N counters, an amplifier at the in pin, onchip support of an external crystal, a programmable reference utput, and both single and doubleended phase detectors with linear transfer unctions (no dead zones). A configuration (C) register allows the part to be onfigured to meet various applications. A patented feature of MC1451701 allows the C egister to shut off unused outputs, thereby minimizing noise and interference.
In order to reduce lock times and prevent erroneous data from being loaded nto the counters, a patented jamload feature of MC1451701 is included. Whenever a new ivide ratio is loaded into the N register, both the N and R counters are amloaded with their respective values and begin counting down together. The MC1451701 detectors are also initialized during the jam load.
• Operating Voltage Range: 2.5 to 5.5 V
• Maximum Operating Frequency:
185 MHz @ Vin = 500 mV pp, 4.5 V Minimum Supply
100 MHz @ Vin = 500 mV pp, 3.0 V Minimum Supply
• Operating Supply Current: 0.6 mA @ 3 V, 30 MHz
1.5 mA @ 3 V, 100 MHz
3.0 mA @ 5 V, 50 MHz
5.8 mA @ 5 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 MICROWIREE Serial Data orts
• Chip Complexity: 4800 FETs or 1200 Equivalent Gates
• See Application Note AN1207/D
MC1451701 Data Sheet
