32k crystal oscillator based on high signal-to-noise ratio pulse injection
A technology of crystal oscillator and pulse injection, applied in the direction of pulse generation, pulse technology, electric pulse generation, etc., can solve the problems of adding capacitor network modules, affecting the performance of 32k crystal oscillator system, increasing chip area and cost, etc.
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[0035] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0036] Such as figure 1 As shown, a 32k crystal oscillator based on high signal-to-noise ratio pulse injection designed in the embodiment of the present invention includes a T / 4 clock delay shaping circuit, a pulse generation circuit and a crystal, wherein the T / 4 clock delay shaping circuit The two input terminals are respectively connected to the input current and the crystal terminal XO in ; The clk clock signal output end of the T / 4 clock delay shaping circuit is connected with the clk clock signal input end of the pulse generation circuit, and the other input end of the pulse generation circuit is connected with an external input current; the two input ends of the crystal are respectively connected with the pulse generation circuit The two outputs inj_i and inj_o of the crystal are connected; the output XO at the other end of t...
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