1 Features
• Request full data sheet
• Dual RF sampling 12-GSPS transmit DACs
• Dual 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 AFE7953 is a high performance, wide bandwidth
multi-channel transceiver, integrating two RF sampling
transmitter chains and two RF sampling receiver
chains. With operation up to 12 GHz, this device
enables direct RF sampling in the L, S, C and Xband
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 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.