A 640 mW high accuracy 8-bit 1 GHz flash ADC encoder

This paper presents a high accuracy low-power encoder for a high-speed Analog-to-Digital Converter (ADC). High speed operation is obtained by using Gallium Arsenide technology, while low-power dissipation is reached by using the PCFL logic family. As essential part of an 8-bit 1 GHz flash ADC encoder, a PCFL 4-bit encoder has been designed and fabricated. Measurement results are reported verifying the expected low power dissipation.