The AFE7444 is a quad-channel, wideband, RF-sampling analog front end (AFE) based on 14-bit,9-GSPS DACs and 14-bit, 3-GSPS ADCs. With operation at an RF of up to 6 GHz, this device enablesdirect RF sampling into the C-band frequency range without the need for additional frequencyconversions stages. This improvement in density and flexibility enables high-channel-count,multimission systems.
The DAC signal paths support interpolation and digital up conversion options that deliverup to 800 MHz of signal bandwidth. Thedifferential output path includes a digital step attenuator (DSA), which enables tuning of outputpower.
Each ADC input path includes a dual DSA and RF and Digital power detectors.Flexible decimation options provide optimization of data bandwidth.
An 8-lane (8 TX + 8 RX) subclass-1 compliant JESD204B interface operates at up to 15Gbps. A bypassable on-chip PLL simplifies clock operation with an optional clock output.