1 Features
• Request full data sheet
• 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.