1 Features

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• AFE80xx versions:

– AFE8000: 8 TX, 10 RX

– AFE8004: 4 TX, 4 RX

– AFE8010: 10 RX

• 12 GSPS RF Sampling DACs

• 4 GSPS RF Sampling ADCs

• Maximum RF signal bandwidth:

– TX: 800 MHz (8 ch) or 1.2 GHz (4 ch)

– RX: 800 MHz (8 ch) or 400 MHz (8 ch) + 800

MHz (2 ch)

• RF frequency range:

– TX: 5 MHz to 7.125 GHz

– RX: 100 MHz to 7.125 GHz

• Digital Step Attenuators (DSA):

– TX: 40 dB range, 1 dB analog and 0.125 dB

digital steps

– RX/FB: 25 dB range, 1 dB step

• Single or dual-band DUC, DDCs

• Dual NCOs per chain for fast frequency switching

• Supports TDD operation with fast switching

between TX and RX

• Internal PLL/VCO to generate DAC/ADC clocks

• Optional external CLK at DAC or ADC rate

• SerDes data interface:

– JESD204B and JESD204C

– 8 SerDes transceivers up to 32.5 Gbps

– 8b, 10b and 64b, 66b Encoding

– 12 bit, 16 bit, 24 bit and 32 bit resolution

– 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 AFE8000 is a high performance, wide bandwidth

multi-channel transceiver, integrating eight RF

sampling DACs and 10 RF sampling ADCs. Pin

and programming compatible lower channel count

versions (AFE8004 with 4TX and 4RX channels,

AFE8010 with 10RX channels) are available to allow

scalable system designs.

Each receiver (RX) chain includes a 25 dB range

DSA (Digital Step Attenuator) followed by a 4 GSPS

ADC (analog-to-digital converter). The 10 ADCs are

connected to 8 receiver paths (1RX though 8RX)

and 2 feedback paths (1FB and 2FB). The ADCs

are identical between RX and FB but the digital

down converter paths are different (the FB paths

are capable of wider bandwidth and can be used as

receivers). Each receiver channel has analog peak

power detectors and digital peak and power detectors

to assist an external or internal autonomous automatic

gain controller, and RF overload detectors for device

reliability protection. The single or dual digital down

converters (DDC) provide up to 800 MHz of signal BW

for 8 channels or 400 MHz for 8 channels in addition

to 800 MHz for 2 channels.

Each transmitter (TX) chain includes a single or dual

digital up converter (DUC). Supporting up to 800 MHz

signal bandwidth for eight channels or 1200 MHz for 4

channels. 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.