Delay phase-locked loop circuit having start control function
A technology of start-up control and voltage-controlled delay, applied in the direction of automatic power control, electrical components, etc., can solve problems such as complex second-order low-pass filters, and achieve the effect of increasing the chip area and speeding up the locking speed.
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[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.
[0025] figure 1 It is a schematic structural diagram of a delay phase-locked loop circuit with a start-up control function of a preferred embodiment of the present invention; the delay phase-locked loop circuit with a start-up control function includes a phase detection sub-circuit, a voltage-controlled delay A time chain, a first-order filter capacitor, and a start-up control subcircuit; the start-up control subcircuit initializes a control voltage, and the control voltage falls within the adjustment range of the delay control voltage of the voltage-controlled delay chain; the phase The detection sub-circuit unit adjusts the value of the control voltage according to the phase of the reference clock and the ...
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