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MC145170P2 Datasheet(PDF) 1 Page - Motorola, Inc |
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MC145170P2 Datasheet(HTML) 1 Page - Motorola, Inc |
1 / 32 page MC145170-2 Ordering Information Device Operating Temp Range Package MC145170P2 TA = -40 to 85°C Plastic DIP MC145170D2 SOG-16 MC145170DT2 TSSOP-16 P SUFFIX CASE 648 DT SUFFIX CASE 948C D SUFFIX CASE 751B © Motorola, Inc., 2003. All rights reserved. 1 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 20 µA additional supply current. Note that the maximum specification of 100 µA 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 BitGrabber 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 5.5 V Technical Data MC145170-2/D Rev. 4, 02/2003 PLL Frequency Synthesizer with Serial Interface Contents: 1 Introduction . . . . . . . . . . 1 2 Specifications . . . . . . . . 3 3 Pin Connections . . . . . 10 4 Design Considerations 18 5 Packaging. . . . . . . . . . . 30 Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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