MC145170D2R2

Differential - Input:Output:	No/No
Base Part Number:	MC145170
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply:	2.7 V ~ 5.5 V
Divider/Multiplier:	Yes/No
Frequency - Max:	185MHz
Series:	--
Ratio - Input:Output:	1:2
Number of Circuits:	1
Output:	Clock
Input:	Clock
PLL:	Yes
Type:	Clock/Frequency Synthesizer, Fanout Buffer (Distribution)
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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MC145170D2R2 Application Field and Working Principle

Clock/Timing applications are the backbone of today\'s technological advancements. Clock generators, PLLs (Phase-Locked Loops) and frequency synthesizers are the primary means for providing synchronous clock progressions to accommodate a range of communication, computing and embedded applications. MC145170D2R2 from ON Semiconductor is a clock and timing IC designed specifically to provide signal sequences and frequencies suitable for the communications markets. This IC provides clock cycle times down to 2ns (nanoseconds) in four channels with adjustable phase delays and frequency ratios. This article briefly discusses the features, application fields and the fundamental working principle of MC145170D2R2.

Features of MC145170D2R2

MC145170D2R2 is one of ON Semiconductor\'s most important clock and timing IC that can provide clock cycle times down to 2ns in four channels with adjustable phase delays and frequency ratios. It is a very powerful IC with some unique features and specifications. The MC145170D2R2 IC includes different types of oscillators for clock generation. These include low-jitter oscillators (or VCOs), reference oscillators and crystal oscillators. For example, oscillators can provide astable clock sequences in standby or active modes with a VCO input. Frequency adjustments can be made by programming a few external pins or by writing to the device. This device is fabricated with ON Semiconductor\'s BCDMOS (Bipolar Complementary DMOS) process technology for excellent performance and reliability.The MC145170D2R2 features the following features and specifications. It has a total of 4 channels with adjustable phase delays and frequency ratios. It offers a frequency resolution of 8MHz (Megahertz) and can achieve frequency steps of 6.25 kHz (Kilohertz). It provides delay times as low as 50ns (nanoseconds) and maximum cycle times of 2ns. Its supply voltage range is 4.5V to 5.5V. Its operating temperature range is -20°C to +85°C.

Application Field

The MC145170D2R2 is an ideal device for applications that require a high frequency clock and the ability to adjust the frequency with precision. It is particularly suitable for high-speed communication, data transmission and graphics systems. Communications applications such as GSM, CDMA, WLL, TDMA, EDGE, WiFi and LTE can also benefit from this IC. It can also be used in consumer electronic products such as video games, TVs, computers and cell phones. MC145170D2R2 is also an ideal IC for high-speed frequency synthesizers that are used for radio applications such as receivers and transmitters. Moreover, it can also be used for precision timing applications in digital signal processing (DSP) and embedded systems.

Working Principle

The MC145170D2R2 is based on a Phase-Locked Loop (PLL) architecture. The PLL achieves frequency locking by creating a reference signal that is compared to an external signal. The MC145170D2R2 consists of an analog phase-locked loop with a voltage controlled oscillator (VCO), a divider, a reference divider, a phase-frequency detector (PFD) and a charge pump. The reference divider is used to divide the frequency of the reference signal and the divider is used to divide the frequency of the VCO signal. The PFD compares the phase and frequency of the two signals and generates a control voltage for the VCO. The charge pump converts the control voltage into a current, which is used to adjust the frequency of the VCO.When the frequency of the VCO is equal to the frequency of the reference signal, the two signals are in phase. This is known as phase locking. At this point, the frequency of the VCO signal is locked to the frequency of the external signal. The MC145170D2R2 can achieve frequency steps as low as 6.25 kHz (Kilohertz) and have a cycle time of 2ns.

Conclusion

The MC145170D2R2 is a powerful clock and timing IC from ON Semiconductor. It is well suited for a range of applications such as high-speed communication, data transmission, digital signal processing and embedded systems. It can provide clock cycle times down to 2ns in four channels with adjustable phase delays and frequency ratios. Based on a Phase-Locked Loop (PLL) architecture, it can achieve frequency steps as low as 6.25 kHz (Kilohertz). In conclusion, the MC145170D2R2 is an ideal solution for a range of clock and timing applications.

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