LUCDA4044 Overview
Functional Diagram 12-3519F The LUCDA4044 consists of two digital phase detectors, a charge pump, and an amplifier. In bination with a voltage-controlled multivibrator, this device is useful in a broad range of phase-locked loop (PLL) applications. The circuit accepts TTL waveforms at the R and V inputs and generates an error voltage that is proportional to frequency and/or phase difference.