TIDA-00094, Quad-Channel 250-Msps Digitizer with Variable Gain Amplifier Reference Design

TIDA-00094, Quad-Channel 250-Msps Digitizer with Variable Gain Amplifier Reference Design. This reference design shows a quad channel, 14-bit, 250-Msps digitizer with wide input range using the LMH6881 programmable differential amplifier and ADS4449 quad-channel, 14-bit, 250-Msps ADC. Performance versus input frequency is shown for both AC and DC coupled applications. Various options for common-mode voltages, power supplies and interfaces are discussed and measured to meet the requirements of a variety of applications