Lattice Semiconductor Corporation

Yibin Fu

Kai Zhou

Yu Shen

Kexin Luo

Kai Lei

Qiming Wu

Zhi Wu

Xiaofeng Wang

Jiabing Zhu

A voltage controlled oscillator (VCO) is disclosed. The VCO includes an amplifier that receives a control signal and a feedback signal and generates an amplified output signal based on the difference between the control signal and the feedback signal. The VCO also includes circuitry to generate an oscillating output signal based on the amplifier output signal. Additionally, the VCO includes a feedback amplifier that generates the feedback signal based on the output of the amplifier. The feedback amplifier includes a first resistor connected in parallel with a second resistor, the second resistor having an adjustable resistance.

Spectrum shaping voltage to current converter

A digital-analog converter (DAC) comprises a receiving circuit configured to receive an input bit stream and generate a first bit signal stream of the input bit stream, a first delay circuit coupled to the receiving circuit to receive the first bit signal stream and to generate a second bit signal stream representing a delayed version of the first bit signal stream. The DAC also comprises a first current generation circuit to receive the first bit signal stream, the first current generation circuit configured to provide first current, corresponding to the first bit signal stream, to a first output. The DAC further comprises a second current generation circuit to receive the second bit signal stream and to provide second current to the first output responsive to receiving the second bit signal stream, a waveform of the second current inverted and scaled relative to a waveform of the first current.

Frequency response compensation in a digital to analog converter

Growing community of inventors

Shanghai, China

Yibin Fu