1 Features

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• Quad RF sampling 12-GSPS transmit DACs

• Quad RF sampling 3-GSPS receive ADCs

• Maximum RF signal bandwidth per TX or RX: 400

MHz

• RF frequency range: 5 MHz - 7.4 GHz

• Digital step attenuators (DSA):

– TX: 40 dB range, 0.125-dB steps

– RX: 25 dB range, 0.5-dB steps

• Single or dual-band DUC or DDCs for TX and RX

• 16x NCOs per TX or RX

• Optional Internal PLL or VCO for DAC or ADC

clocks or external clock at DAC or ADC sample

rate

• Sysref Alignment Detector

• SerDes data interface:

– JESD204B and JESD204C compatible

– 8 SerDes transceivers up to 29.5 Gbps

– Subclass 1 multi-device synchronization

• Package: 17-mm × 17-mm FCBGA, 0.8-mm pitch

2 Applications

• Radar

• Seeker front end

• Defense radio

• Tactical communications infrastructure

• Wireless communications test

3 Description

The AFE7901 is a high performance, wide

bandwidth multi-channel transceiver, integrating four

RF sampling transmitter chains and four RF sampling

receiver chains. With operation up to 7.4 GHz, this

device enables direct RF sampling in the L, S and Cband

frequency ranges without the need for additional

frequency conversions stages. This improvement in

density and flexibility enables high-channel-count,

multi-mission systems.

The TX signal paths support interpolation and digital

up conversion options that deliver up to 400 MHz of

signal bandwidth per TX path using a single or dual

digital up converter. The output of the DUCs drives

a 12-GSPS DAC (digital to analog converter) with a

mixed mode output option to enhance 2nd Nyquist

operation. The DAC output includes a variable gain

amplifier (TX DSA) with 40-dB range and 1-dB analog

and 0.125-dB digital steps.