ECS-240-20-4

Crystals are extensively used in various electronics applications requiring timing, frequency control, modulation and demodulation, and signal filtering. The ECS-240-20-4 is a crystal oscillator designed to provide precision timing signals for use in radio, satellite, cellular, GPS, and other communications systems. It provides a reliable and inexpensive frequency reference, while also being able to minimize power consumption and reduce size.

The ECS-240-20-4 crystal oscillator is based on the quartz crystal ring oscillator. Quartz crystals are used mainly due to their high stability, i.e., they will hold the same frequency over a wide range of temperatures and operational conditions. The crystal forms the resonant element in a crystal oscillator, which is primarily composed of two sections; an electronic tuning circuit and a quartz crystal. The electronic tuning circuit is responsible for generating the correct frequency from the quartz crystal and maintaining it at a relatively constant level.

The frequency of the oscillator is determined by the quartz crystal, which typically consists of a thin quartz plate that is cut and polished to a size, center frequency, and tolerance specified by the customer. Quartz crystals are also temperature sensitive and require special temperature compensation circuits to ensure the oscillator frequency remains stable over a temperature range. This is accomplished by using either temperature-compensating capacitors or by using a secondary quartz crystal in a two-stage frequency compensator circuit.

The ECS-240-20-4 crystal oscillator utilizes a low-power oscillator circuit, where the oscillator frequency is directly proportional to the crystal’s reactance. The oscillator is composed of an amplifier and a feedback network comprised of the quartz crystal and an optional capacitor. The capacitor connected in parallel to the quartz crystal determines the operating frequency. The circuit also incorporates a buffer stage that senses the signal amplitude and maintains a constant signal level regardless of load conditions.

The ECS-240-20-4 crystal oscillator, which is designed to operate over a wide temperature range, is ideal for wide-area and global applications, particularly those requiring portability, robust frequency stability and absolute accuracy. This product is capable of operating in frequency ranges from 10 kHz to 100 MHz and has a frequency stability range of 1.2 ppm over 0-50°C, which makes it an ideal choice for demanding applications such as telecommunications and location-based services. In addition, the ECS-240-20-4 is also RoHS compliant and CE/FCC/ISH compliant.

In summary, the ECS-240-20-4 is a crystal oscillator suitable for various communication systems. Its miniature size and low-power circuit design make it ideal for applications where portability and power efficiency are important factors. The product is designed to maintain a frequency stability range of 1.2 ppm over a temperature range of 0-50°C and is RoHS compliant and CE/FCC/ISH compliant.