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Description
CMOS PLL FREQUENCY SYNTHESIZER WITH SERIAL INTERFACE
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Introduction
The new MC145170-2 is pin-for-pin compatible with the MC145170-1.A comparison of the two parts is shown in the table below.The MC145170-2 is recommended for new designs and has a more robust power-on reset (POR) circuit that is more responsive to momentary power supply interruptions. The two devices are actually the same chip with mask options for the POR circuit. The more robust POR circuit draws approximately 20μA additional supply current. Note that the maximum specification of 100μA quiescent supply current has not changed.
The MC145170-2 is a single-chip synthesizer capable of direct usage in the MF, HF, and VHF bands. A special architecture makes this PLL easy to program. Either a bit-or byte-oriented format may be used. Due to the patented BitGrabberTM registers, no address/steering bits are required for random access of the three registers. Thus, tuning can be accomplished via a 2-byte serial transfer to the 16-bit N register.
The device features fully programmable R and N counters, an amplifier at the fin pin, on-chip support of an external crystal, a programmable reference output, and both single-and double-ended phase detectors with linear transfer functions (no dead zones). A configuration (C) 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 noise and interference.
In order to reduce lock times and prevent erroneous data from being loaded into the counters, a patented jam-load feature is included. Whenever a new divide ratio is loaded into the N register, both the N and R counters are jam-loaded with their respective values and begin counting down together. The phase detectors are also initialized during the jam load.
● Operating Voltage Range: 2.7 to 5.5V
● Maximum Operating Frequency:
185 MHz @ Vin = 500mVpp, 4.5 V Minimum Supply
100 MHz @ Vin = 500mVpp, 3.0 V Minimum Supply
● Operating Supply Current:
0.6mA @ 3.0 V,30 MHz
1.5mA @ 3.0 V,100 MHz
3.0mA @ 5.0 V,50 MHz
5.8mA @ 5.0 V,185 MHz
● Operating Temperature Range: -40 to 85℃
● R Counter Division Range: 1 and 5 to 32,767
● N Counter Division Range: 40 to 65,535
● Direct Interface to Motorola SPI Serial Data Port
● See Application Notes AN1207/D and AN1671/D
● Contact Motorola for MC145170 control software.
Preview of the first 3 pages of the data sheet
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10000 buyer reviews from United States
Brian Nelson
Length of registration:7 years
Thank you for offering the MC145170D2 electronic component. I appreciate the quality and reliability of the product, as well as the competitive pricing.
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03/17/2023
Alex
Length of registration:2 years
The package is tight and there is no damage, the quality of the goods is very good, and the delivery speed is fast. Overall, it is a pleasant shopping, and I will buy it again next time if I need it!
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0
Reply0
08/31/2022
Pedro Murillo
Length of registration:15 years
excellent
0
0
Reply0
03/01/2017
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MC145170D2
MC145170D2 has several brands around the world that may have alternate names for MC145170D2 due to regional differences or acquisition. MC145170D2 may also be known as the following names:
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