ADF4112BCPZ

Series:	--
Packaging:	Tray
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	Clock/Frequency Synthesizer (RF)
PLL:	Yes
Input:	CMOS, TTL
Output:	Clock
Number of Circuits:	1
Ratio - Input:Output:	2:1
Differential - Input:Output:	Yes/No
Frequency - Max:	3GHz
Divider/Multiplier:	Yes/No
Voltage - Supply:	2.7 V ~ 5.5 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	20-WFQFN Exposed Pad, CSP
Supplier Device Package:	20-LFCSP-WQ (4x4)
Base Part Number:	ADF4112

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The ADF4112BCPZ is an integrated circuit for clock and timing applications. It is part of a new range of all-silicon frequency synthesizer circuits from Analog Devices. The circuit is a programmable frequency and voltage synthesizer with an integrated phase-locked loop (PLL) that operates from a VDD supply voltage range from 4.5V to 5.5V.The ADF4112BCPZ plays a crucial role in several clock and timing applications, as it offers high-performance frequency synthesis, integrated Phase-Locked Loop and control logic, programmable output frequency (FOUT), as well as a wide range of features such as high output frequency accuracy, low frequency jitter and low noise operation. Additionally, it is ideal for low-power applications, as it operates on 4.5V to 5.5V VDD supply voltage range and draws only 3mA typical current.The Principle of the working of the ADF4112BCPZ is based on the Charge Pump Phase-Locked loop (CP-PLL) architecture. To understand the working principle, it is vital to have an in-depth knowledge of the CP-PLL architecture for which the basic components include comparator, charge pump, loop filter, VCO and MUX ( Multiplexer).Essentially, the charge pump drives the current through the loop filter, leading to a linear ramp voltage on the loop filter. Now, this ramp voltage is compared to a reference current and the output of the comparator is passed to the loop filter, so that the loop filter output is driven towards the reference. When the output of the loop filter is the same as the reference current, the loop is said to be “locked”, and the output frequency of the PLL is stable. The ADF4112BCPZ features a proprietary phase-locked loop (PLL) control logic that allows frequency adjustment while keeping the phase locked, enabling fast and accurate frequency tracking of external sources.When working with the ADF4112BCPZ circuit, the user is able to program a range of frequencies, the output voltage and clock signal shape, as well as functional frequency conversion mode and many other features.The ADF4112BCPZ is ideal for use in applications such as high performance digital clock synthesizers and PLL based digital signal processing architectures as well as in communications systems, digital audio, wireless devices and other applications that require frequency synthesis.The ADF4112BCPZ has many interesting features, such as an integrated bypass for bypassing the clock signal to the signal source, and the number of available dividers which is programmable from 1 to 65, 536.The internal multiplexers allow for the flexible connection of digital inputs or outputs to the internal loop filter. The digital to analog converter (DAC) is used to adjust the output frequency in 1 Hz steps or 0.0001 Hz resolution, while the high speed comparator allows for fast initial detection and tracking of external clocks as well as accurately control the output frequency.In conclusion, the ADF4112BCPZ is a practical and flexible single-chip IC solution that is ideal for low-power clock and timing applications. It combines both a high-performance frequency synthesizer and a PLL to provide a stable and accurate output signals at a wide range of frequencies. This makes it highly suitable for practical applications such as communications systems, digital audio, wireless devices and other applications requiring frequency synthesis and PLL-based digital signal processing architectures.

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