DSC400-1444Q0052KE1T

Output:	HCSL, LVCMOS
Current - Supply (Disable) (Max):	44mA
Package / Case:	20-VFQFN Exposed Pad
Height:	0.035" (0.90mm)
Size / Dimension:	0.197" L x 0.126" W (5.00mm x 3.20mm)
Current - Supply (Max):	--
Operating Temperature:	-20°C ~ 70°C
Frequency Stability:	±50ppm
Voltage - Supply:	2.25 V ~ 3.6 V
Series:	DSC400
Function:	Enable/Disable
Frequency - Output 2:	--
Frequency - Output 1:	--
Type:	XO (Standard)
Base Resonator:	MEMS
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

Pin Configurable/Selectable Oscillators are oscillators that are pin configurable to change the frequency which they operate at. This is achieved by internally selecting the desired frequency with control pins. DSC400-1444Q0052KE1T is an example of a pin configurable oscillator that is able to achieve fast switching speeds, even when the oscillator is operating at low frequency.

Application Field

DSC400-1444Q0052KE1T has many application fields. It is popular in the communications industry and is used in many products such as radio transmitters and receivers, cellular base stations and media platforms. Its ability to operate at a low frequency makes it ideal for monitoring and switching systems. It is also used in clocks and watches, timing control systems and general-purpose clocks.

Working Principle

DSC400-1444Q0052KE1T utilises a PIN-selectable frequency control design, which offers a wide variety of controllable frequency output and stability. The oscillator includes two frequency select pins (Fsel1 and Fsel2) that are used to switch the oscillator frequency between different frequencies. The frequency is determined by the combination of these two pins.When a two-leg pull-up resistor is applied to the conduction path input of the mosfet, the oscillator is controlled by the frequency selected by the Fsel1 and Fsel2 pins. The frequency is maintained by a frequency Latch circuit, which stores the set frequency until another frequency is selected. When the frequency is changed, the output of the oscillator can reach the new frequency within 1 ms.

Conclusion

DSC400-1444Q0052KE1T is a pin configurable oscillator that is used in a wide range of applications. It features an internal selectable frequency, with fast switching speeds even when operating at low frequencies. The device is configured by two frequency select pins (Fsel1 and Fsel2), which allow for different oscillator frequencies. It is ideal for communications, clocks and watches, timing control systems and general-purpose clocks.

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