1 Features
• Request full data sheet
• Radiation hardness assured AFE7950-SP:
– Single-event latch up (SEL): 70MeV-cm2/mg
– RLAT Total ionizing dose (TID): 100krad (Si)
• Radiation tolerant AFE7950-SEP:
– Single-event latch up (SEL): 43MeV-cm2/mg
– RLAT Total ionizing dose (TID): 30krad (Si)
• Four RF sampling 12GSPS TX DACs
• Six RF sampling 3GSPS RX ADCs
• Maximum RF signal bandwidth: 1200MHz (or
2400MHz for 2TX)
• RF frequency range:
– TX: 600MHz to 12GHz
– RX: 5MHz to 12GHz
• Digital Step Attenuators (DSA):
– TX: 40dB range, 0.125dB steps
– RX or FB: 25dB range, 0.5dB steps
• Single or dual-band DUC or DDCs for TX and RX
• SerDes data interface:
– 8 SerDes transceivers up to 24.75Gbps
– JESD204B/C subclass 1 compatible
• Package: 17mm × 17mm FCBGA, 0.8mm pitch
• Screening:
– One fabrication, assembly, and test site
– Product traceability
– Extended product life cycle
– Extended product change notification
– Vendor item drawing
– Radiation lot acceptance Test (RLAT)
(AFE7950-Sx only)
– Meets ASTM E595 out gassing specification
(AFE7950-Sx only)
– Production burn-in (AFE7950-SP only)

2 Applications
• Satellite communications payload downlink
• Satellite telemetry payload downlink

3 Description
The AFE7950-x 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
12GHz, 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
high-channel-count, multi-mission systems.
The TX signal paths support interpolation and digital
up conversion options that deliver up to 1200MHz
of signal bandwidth for four TX or 2400MHz for two
TX. The output of the DUCs drives a 12GSPS 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 40dB range and 1dB analog and 0.125dB digital
steps.
Each receiver chain includes a 25dB range Digital
Step Attenuator (DSA), followed by a 3GSPS ADC
(analog-to-digital converter). Each receiver channel
has an analog peak power detector and various
digital power detectors to assist an external or
internal autonomous automatic gain controller, and
RF overload detectors for device reliability protection.
Flexible decimation options provide optimization of
data bandwidth up to 1200MHz for four RX without FB
paths or 600MHz with two FB paths (1200MHz BW
each).