SIT8008AIL3-18E

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Programmable oscillators are used in a variety of applications, and the SIT8008AIL3-18E is no exception. The SIT8008AIL3-18E is a temperature-compensated oscillator (TCXO) module specifically designed for use in automotive applications, such as in-vehicle communication systems, telematic units, and navigation systems. It features excellent performance in low temperature environments and is ideal for automotive applications which require precise frequency accuracy regardless of ambient temperature or aging effects. The SIT8008AIL3-18E can directly replace a crystal-based solution with no modifications, contributing to shorter production cycles and minimized costs.

The SIT8008AIL3-18E has an input voltage range of 3.3V and its oscillator is programmable via a serial peripheral interface (SPI) bus. This allows the device to be configured for various frequencies, enabling shorter production cycles and minimized costs. The oscillator can be programmed to frequencies between 8 MHz and 40 MHz and offers an output frequency accuracy of ±12.5 ppm. The device is designed in a 18-pin CLCC package that provides both ruggedness and high-level RF performance in a compact form factor.

The SIT8008AIL3-18E works on the principle of using a temperature-compensated voltage-controlled oscillator (TCXO). First, an external crystal oscillator is connected to the frequency-determining input of the oscillation circuit. The TCXO then measures the frequency of the input crystal, compares it to its internal reference value, and adjusts its output accordingly using a feedback loop. This allows the oscillator to maintain an extremely precise frequency despite changes in external temperature or aging effects.

The SIT8008AIL3-18E is designed to operate in a wide temperature range, from -40°C to +85°C. Thus, it is well suited for automotive applications that are subject to extreme temperatures. The device also features a low voltage detect (LVD) which automatically shuts down the oscillator in the event of low supply voltage, ensuring correct operation during car malfunctions and other conditions where the supply voltage may become unexpectedly low.

The SIT8008AIL3-18E also provides reliable EMI performance, with a crystal-less design that eliminates potential EMI emissions from the device. Further, it is compliant with the automotive industry’s CAN-FD and ISO 9141-2 standards for communication between electronic control units. All these features make the SIT8008AIL3-18E an ideal choice for automotive applications that require precise frequency accuracy, a wide temperature range, and excellent EMI performance.

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