ICS91857AGT

Differential - Input:Output:	No/Yes
Base Part Number:	ICS91857
Supplier Device Package:	48-TSSOP
Package / Case:	48-TFSOP (0.240", 6.10mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Voltage - Supply:	2.3 V ~ 2.7 V
Divider/Multiplier:	No/No
Frequency - Max:	230MHz
Series:	--
Ratio - Input:Output:	1:10
Number of Circuits:	1
Output:	SSTL-2
Input:	LVCMOS
PLL:	Yes with Bypass
Type:	Clock Driver
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Clock/Timing systems are essential to the functioning of many electronic devices. These systems, which generate and synthesize accurate signal frequencies, often rely on a single component as the core element to provide the necessary signal or timing information. The ICS91857AGT is a device designed for use in such clock/timing applications, and is capable of providing consistent, reliable signal outputs for many different applications.

The ICS91857AGT is, in its most basic form, a phase-locked loop with an integrated oscillator, counter and divide-by- N prescaler. This device works by using a reference signal input to create an exact copy, or secondary signal output. Thissecond signal is then used by the PLL to adjust its output frequency, so as to be in synchronisation with the reference signal, while keeping the desired output frequency and duty cycle parameters. This allows for accurate frequency synthesis, providing accurate and consistent signal outputs.

The ICS91857AGT is capable of generating output clock frequencies ranged from about 2 kHz to about 200 MHz, which allows for a great number of different applications. These include, but are not limited to, peripheral devices such as modems and low-power computing devices, RF communications systems, and digital audio systems. Additionally, this PLL is a great solution for use in high-speed frequency division systems, where the need for a reliable and repeatable frequency division ratio is required.

One advantage to the ICS91857AGT is that its clock/timing output is highly configurable. This can be set using the on-board control pins, using calibration and enable signals, or using the internal registers. With the available options, users can customize the desired clock/timing parametersto meet the application needs. Its adjustable parameters include; output frequency, periods, and duty cycle. There are also built-in bandpass filters and control logic, making it an optimal choice for adapting the interface to many different projects.

In addition to its powerful output capabilities, the ICS91857AGT also has several other advantages. It offers power savings when compared to standard PLLs, and also provides low-noise operation. It also includes spread spectrum selections to help reduce EMI/RFI noise, providing interference-free operation. It also includes sleep-mode for power conservation, and is designed to work with 5V logic levels.

In conclusion, the ICS91857AGT is an invaluable component for use in Clock/Timing applications. Its configurable options and powerful output capabilities, low-noise performance, and low-power consumption make it a great component for many different applications across the industry. Its ability to synthesize accurate signal frequencies, and to integrate with existing systems, allow it to be a great choice for any number of clock/timing applications.

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