DS1087LU-2CL+T

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The DS1087LU-2CL+T is a clock generator, phase-locked loop (PLL) and frequency synthesizer from Texas Instruments meant for desktop and server systems with low-power, low-jitter requirements. It is fully programmable, allowing the output clocks to be defined by the user and optimized to meet specific system needs. Additionally, the device operates within a wide frequency range – between 12 kHz and 400 MHz – with fractional frequency synthesis and spread spectrum clocking capabilities. The device is highly reliable, providing protection against runaway clock conditions and interference.

The application fields for the DS1087LU-2CL+T include telecom, video, data processing and general purpose clock generation and signal buffering. It is well suited for designs such as servers, desktops, and routers that require a synchronized, highly precise clock generation with extremely low jitter. Additionally, the device offers low power consumption, which is beneficial for systems that require a low-power operation, such as battery-powered systems. This device is also capable of providing spread spectrum modes for reducing EMI.

The DS1087LU-2CL+T works by using a low-noise internal VCXO to generate a base frequency, which is then multiplied and processed by a digital frequency synthesizer. First, the device is programmed via two-wire serial programming to define the frequency output settings and other parameters such as spread spectrum settings. The device then begins synthesizing the specified output frequencies, which can be adjusted by varying the supply voltage. The output clocks are available through several output pins, allowing the output of multiple clocks with a single device.

The DS1087LU-2CL+T is a very efficient, low-power frequency synthetizer and clock generator with a wide range of applications that require synchronized, highly precise clock generation with extremely low jitter. It also offers flexibility for applications that require fractional frequency synthesis and spread spectrum clocking capabilities. Furthermore, the device offers protection against interference and runaway clock conditions for enhanced reliability.

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