1 Features
• Request full data sheet
• Quad RF sampling 12-GSPS transmit DACs
• Quad RF sampling 3-GSPS receive ADCs
• Dual RF sampling 3-GSPS feedback (auxilliary
RX) ADCs
• Maximum RF signal bandwidth:
– 4TX or 2FB: 1200 MHz or 2TX: 2400 MHz
– RX): 1200 MHz (no FB), 600 MHz (with FB)
• RF frequency range:
– TX: 5MHz - 7.4GHz
– RX/FB: 5MHz -7.4GHz
• Digital step attenuators (DSA):
– TX: 40 dB range, 0.125-dB steps
– RX or FB: 25 dB range, 0.5-dB steps
• Single or dual-band DUC or DDCs for TX and RX
• 16x NCOs per TX or RX and FB
• 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 AFE7900 is a high performance, wide
bandwidth multi-channel transceiver, integrating four
RF sampling transmitter chains, four RF sampling
receiver chains and two RF sampling feedback chains
(six RF sampling ADCs total). With operation up to
7.4 GHz, this device enables direct RF sampling in
the L, S and C-band 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 1200 MHz
of signal bandwidth for four TX or 2400 MHz for two
TX. 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.