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 - 10.2GHz

– RX: 5MHz - 10.2GHz

• 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

10.2GHz, 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 DSA

(Digital Step Attenuator), 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).