4GHz 2.6GSample/s ADCs

4GHz 2.6GSample/s ADCs

Texas Instruments’ ADC32RF44 dual-channel, 14-bit, 2.6GSample/s RF-sampling analog-to-digital converters (ADCs) exhibit input frequencies up to 4GHz. They are designed for high signal-to-noise ratios (SNR) and deliver a noise spectral density of –154.2dBFS/Hz and a dynamic range including channel isolation over a large input frequency range. The buffered analog input with on-chip termination minimizes sample-and-hold glitch energy, resulting in uniform input impedance across a wide frequency range. Phase-coherent frequency hopping occurs as each ADC channel is connected to a dual-band, digital down-converter (DDC) with up to three independent, 16-bit numerically-controlled oscillators (NCOs) per DDC.