Δ Σ A/D Converter Using VCO
Details
The conventional Δ Σ A/D converter has been used for audio application area. We proposed the high-speed Δ Σ A/D Converter using Voltage Controlled Oscillator (VCO) as a quantizer which could work at wide bandwidth and low power supply. To convert at video application area, we designed the 0.6μm CMOS test chip and obtained 48-dB (SNR) at 2.5-MHz bandwidth by experimental results, but the performance degraded by the harmonic distortion.
