SM802120UMG

Series:	ClockWorks™, RotaryWave™
Packaging:	Tray
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
PLL:	Yes
Input:	Crystal
Output:	HCSL, LVDS
Number of Circuits:	1
Ratio - Input:Output:	1:8
Differential - Input:Output:	No/Yes
Frequency - Max:	125MHz
Divider/Multiplier:	Yes/No
Voltage - Supply:	2.375 V ~ 3.465 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	44-VFQFN Exposed Pad
Supplier Device Package:	44-QFN (7x7)
Base Part Number:	SM802120

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SM802120UMG Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers

The SM802120UMG is a versatile Clock/Timing technology device that is capable of providing precise timing and frequency synthesis capabilities in a variety of applications. This article will focus on the applications and working principle of the SM802120UMG.The SM802120UMG can be used in a variety of Clock/Timing applications, including clock generation, frequency synthesis, and programmable frequency control. This device is a programmable frequency synthesizer, which can generate multiple frequency outputs for precise timing requirements with an extremely wide output range (100 Hz to 1000 MHz). In addition, the SM802120UMG offers a wide range of digital and mixed-signal voltage control and standby functions, making it an ideal choice for applications in consumer and telecommunication systems, digital television, and industrial automation.The SM802120UMG works by converting an external clock signal, typically a crystal oscillator, into multiple clock outputs with precision timing. The external crystal is typically connected to the device via an input clock selector or A/D circuit. In selecting the input clock frequency, the user can select from a wide range of available clock frequencies, including crystal oscillators, as well as a wide variety of programmable clocks.Once the external clock signal has been selected, the SM802120UMG then takes the clock signal and measures the frequency of the external clock by counting cycles. After the frequency has been measured, the internal comparison circuits compare the input clock frequency with the desired output frequency. Once the differences have been determined, the internal phase-locked loop (PLL) circuits of the device then adjust the internal phase shift and amplitude of the input clock signal. This adjustment process then produces the desired frequency outputs.Furthermore, the process also enables programmability to the device. Since the internal phase-locked loop circuits are controlled by the control bus, the SM802120UMG can be programmed for a wide range of functions, such as frequency selection, frequency development accuracy and control, spread-spectrum timing, frequency divider, and phase modulation. Programming can be done via the Serial Peripheral Interface (SPI), JTAG or I2C bus.The SM802120UMG is a very versatile device that can be used in many different applications. Due to the high resolution and stability of the internal PLL circuits and the wide range of available output frequencies, the SM802120UMG is well-suited for applications that require a precise and wide range of frequencies. Additionally, its programmability also allows it to be used in a variety of different clock synchronization applications and programmable frequency control.Overall, the SM802120UMG is an excellent choice for a variety of Clock/Timing applications. Its wide range of output frequencies, precise timing, and programmability enable it to be used in many different types of applications, from consumer and telecommunication systems to digital television and industrial automation. The internal PLL circuits also provide the device with a high resolution, making it an ideal choice for applications that require precise timing and frequency synthesis.

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