LTC6946IUFD-4#TRPBF

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The LTC6946IUFD-4#TRPBF is an ultra-low noise low jitter clock generator specifically designed to provide programmable, low power and space saving solutions for multiple frequency requirements. Additionally, it can be used in a wide variety of applications due to its low power and low noise characteristics.

The LTC6946IUFD-4#TRPBF can be used in clock-tree applications such as networking and system-on-chip designs, where multiple frequencies are needed in a compact form factor. This device generates multiple programmable frequencies from a single 10MHz reference clock, such as LVDS and LVCMOS, through its on-chip synthesizer. This increases the total PLL frequency range while decreasing the total power consumption in the system.

This device features a programmable 200-800MHz range and a maximum typical output jitter of 0.2ps. It also features superior phase noise performance across the jitter spectrum with its advanced PLL technology, making it ideal for many high performance clock-tree applications. Its advanced PLL technology offers precise differential frequency resulting in a maximum frequency offset of 0.1MHz and a typical frequency offset of 0.01MHz.

The LTC6946IUFD-4#TRPBF operates with a single +3.3V power supply and utilizes a tiny 4-pin QFN package, allowing for enhanced system size and increased reliability. The device is equipped with a dual mode power and fault management system, which allows it to switch from frequency-lock mode to fail-safe mode in case of an unexpected power failure.

The LTC6946IUFD-4#TRPBF incorporates a phase lock loop (PLL) synthesis circuit which is responsible for generating multiple programmable frequencies from a single input reference frequency. It is composed of a phase detector, a charge pump circuit, and a voltage-controlled oscillator (VCO). The phase detector is used to compare and detect the phase difference between the reference frequency and the loop filter output. The charge pump circuit is then used to adjust the VCO, which generates the required output frequencies.

In addition, several features on the LTC6946IUFD-4#TRPBF device enable high levels of control, such as low frequency noise, jitter detection and dampening, and dynamic loop control. The device also offers an adjustable filter architecture for noise reduction, a voltage control input for frequency control, and an output enable pin for power saving applications.

The LTC6946IUFD-4#TRPBF makes an excellent choice for a clock generator in digital circuitry applications, and its high level of control and flexibility makes it a convenient solution for multiple frequency requirements. It is particularly well-suited for many clock-tree designs, since it can generate multiple frequencies from a single reference clock, resulting in significant savings in power and space requirements.

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