Ningbo University

Haiming Zhang

Pengjun Wang

Yuejun Zhang

Huihong Zhang

Xiaotian Zhang

Haizhen Yu

The invention discloses a circuit aging detection sensor based on voltage comparison. A control circuit generates an aging voltage signal, a standard voltage signal and a reference voltage signal. The aging voltage signal passes through a first voltage-controlled oscillator to generate an aging frequency signal. The standard voltage signal passes through a second voltage-controlled oscillator to generate a standard frequency signal. The standard frequency signal and the aging frequency signal pass through an aging detection circuit to generate a frequency difference signal. A level signal generated by a serial data detector passes through a beat-frequency oscillator to generate a reset signal. A counter quantizes aging information, which is converted by a digital-analog converter into a quantized voltage signal. The quantized voltage signal is compared with the reference voltage signal by a voltage comparator, to generate a hopping signal at a voltage superposition node, and an aging signal is output.

Circuit aging detection sensor based on voltage comparison

The disclosure discloses a lookup table-based circuit aging detection sensor, including a control circuit, two voltage controlled oscillators (VCOs), two shaping circuits, a phase comparator, a 3-digit voter, a beat-frequency oscillator, an 8-digit counter, a latch, a lookup table array and a digital-analogue converter. The control circuit respectively connects with the phase comparator, the 3-digit voter, the 8-digit counter, the first and the second VCOs. The first and second VCOs connect with the first and second shaping circuits respectively. The first and second shaping circuits connect with the phase comparator. The phase comparator connects with the 3-digit voter. The 3-digit voter connects with the beat-frequency oscillator. The beat-frequency oscillator respectively connects with the 8-digit counter and the latch. The 8-digit counter connects with the latch. The latch connects with the lookup table array. The lookup table array connects with the digital-analogue converter.

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Zhejiang, China

Haiming Zhang