What is the EPS series oscillator theory of operation?
An EPS series oscillator consists of a fundamental mode crystal controlled oscillator and a flash programmable integrated circuit. The memory contains programmable functions that control the operating characteristics of the device (i.e. output frequency, modulation frequency, output frequency spread spectrum percentage, power down versus tri-state, and duty cycle). At the heart of an EPS series oscillator is a programmable high resolution PLL (Phase Locked Loop as shown in Figure 3). The PLL consists of a reference counter divider, a feedback counter multiplier, spread spectrum modulation signal, and an output divider. Utilizing a proprietary design and an exclusive programming methodology, the EPS series oscillators are programmed with specific values that define the operating characteristics of the oscillator.
