1 Features
• Request full data sheet
• Quad RF sampling 12-GSPS transmit DACs
• Quad RF sampling 3-GSPS receive ADCs
• Maximum RF signal bandwidth: 400 MHz
• RF frequency range: 600 MHz - 12 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
• 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
• 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 AFE7951 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 12 GHz, this
device enables direct RF sampling in the L, S,
C and X-band frequency ranges without the need
for additional frequency conversions stages. This
improvement in density and flexibility enables highchannel-
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 channel. 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.