LE75183CDSC

LE75183CDSC Interface - Telecom Application Field and Working Principle

The LE75183CDSC is a low-jitter clock and data recovery circuit designed for telecom applications. It is a programmable device with a clock and data recovery (CDR) synthesizer, a digital phase-locked loop (DPLL), a versatile voltage-controlled oscillator (VCO), and an ultra-low-jitter, low-voltage differential signaling (LVDS) I/O port. This circuit is designed to operate over a wide range of frequencies from several hundred MHz up to 10 GHz.

The LE75183CDSC, when combined with its supporting components, provides a reliable solution for a variety of telecom applications. This includes optical transceivers, synchronous ethernet equipment, Ethernet routers, and various other telecom-related applications.

The LE75183CDSC works based on an input clock of either single-ended or differential type that is fed into a phase-frequency detector (PFD). The PFD sets the operation point of the control loop that the VCO is part of. The VCO sets the output clock frequency based on its tuning voltage. The output clock is then passed through the DPLL, which ensures that the output clock is synchronous with the input clock. Finally, the output clock is fed into the LVDS I/O port, providing a clean and low-jitter clock signal.

The LE75183CDSC is designed to maintain a lock on the input clock in most dynamic conditions. The device can achieve a locking time of only a few microseconds after initial power-up. Its lock-onicity is further improved by the use of the DPLL in the circuit, which can correct for any drift in the input clock and the synthesizer in the circuit, which can address any changes in the input clock frequency. The circuit also features an automatic power down mode which reduces the dynamic power consumption while maintaining reliability in the output clock signal.

The LE75183CDSC is also engineered to be interoperable with other telecom devices and to meet a wide range of EMI requirements. Its power rails and signal lines are designed such that any noise from other sources is filtered out, thus allowing for a reliable clock signal at higher operating frequencies. The LVDS I/O port further reduces EMI, providing clean clock signals for any telecom application.

In summary, the LE75183CDSC is a versatile programmable clock and data recovery circuit designed for telecom applications. It operates over a wide frequency range while providing low-jitter output settings, reduced EMI, and low dynamic power consumption. The DPLL and VCO in the circuit make it possible to achieve precise clock synchronization and reliable performance.