6-bit, 1 GSPS High Performance ADC in 28nm CMOS

The ODT-AFE-6B1G-28 is a high-performance I/Q ADC and I/Q DAC designed in a 28nm CMOS process, implemented using Omni Design's groundbreaking low power SWIFT technology.

The 6-bit, 1.056GSPS I/Q ADC supports input signals up to 400 MHz and features a differential full-scale range of 0.6Vpp and excellent static and dynamic performance. The ADC architecture is optimized to maximize performance while minimizing power and area consumption.

The 6-bit, 1.056GSPS I/Q DAC is a current steering DAC designed to drive a 100ohm different output load. The output full-scale current can be digitally programmed from 1-to-5mA.

The AFE includes a bandgap voltage/current reference to generate a power supply insensitive ADC reference voltage. The reference also generates the DAC bias current which is proportional to an off-chip resistor.