TS080F23IDT

TS080F23IDT Application Field and Working Principle

The TS080F23IDT is a type of frequency compensated crystal oscillator (FCXO) manufactured by Taitien. It operates within an input voltage range from 2.5 to 3.3 VDC and has a frequency range from 27 to 214.4 MHz. Its low-power application circuit topology features an on-chip phase-locked loop (PLL) that locks the output frequency to a VCXO reference frequency, thus providing excellent stability over temperatures and other environmental conditions.

The TS080F23IDT typically comes with a power consumption of 1.2 mW and a package size of 6.5 x 7.5 mm. It has been widely used in applications such as digital broadcasting receivers, IP phones, and digital TV tuners. It also offers a low-jitter output (<0.5ps rms) over a wide frequency range, making it suitable for a variety of digital TV applications.

Working Principle

The TS080F23IDT features a built-in phase-locked loop (PLL) circuit that allows it to lock the output frequency to a VCXO reference frequency with excellent stability. The PLL circuit consists of an input frequency divider, an adjustable voltage controlled oscillator, and a frequency control loop that corrects the output frequency of the VCXO to ensure stability. The oscillator output is divided by 1, 2, 4, 8, 16, 32, 64, or 128 to generate the output frequency. The oscillator is connected to the VDD, GND, and REF nodes, where the REF pin is connected externally to an external reference voltage, typically in the range of 0.5 to 1.5V.

The VDD and GND pins provide all necessary power supply voltages for the oscillator, while the REF pin provides the control voltage for the PLL circuit. The frequency control loop compares the frequency of the input VCXO with the external reference frequency and adjusts the control voltage to the REF pin in order to maintain the desired output frequency.

Conclusion

The TS080F23IDT crystal oscillator from Taitien is a frequency compensated product that provides excellent stability in a very low-power package. Its built-in phase-locked loop circuit allows it to lock to an external VCXO reference frequency, making it ideal for applications such as digital broadcasting receivers, IP phones, and digital TV tuners. Its low-jitter output and wide frequency range make it suitable for a variety of digital TV applications.