1 Features

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• Six RF sampling 14 bit, 3 GSPS ADCs

• Maximum RF signal bandwidth:

– 4 ADCs: 1200 MHz per ADC

– 6 ADCs: 600 MHz per ADC

• RF frequency range: 5 MHz - 12 GHz

• Digital step attenuators (DSA): 25 dB range, 0.5-

dB steps

• Single DDC (on 6 channels) or dual-band DDCs

(on 4 channels)

• 16x NCOs per DDC channel

• Optional Internal PLL/VCO for ADC clocks or

external clock at ADC sample rate

• Sysref alignment detector

• SerDes data interface:

– JESD204B and JESD204C compatible

– 8 SerDes transmitters 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

• Wireless communications test

3 Description

The AFE7906 is a high performance, wide bandwidth

multi-channel receiver, integrating six RF Sampling

ADCs. 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.

Each receiver chain includes a 25-dB range DSA

(Digital Step Attenuator), followed by a 3-GSPS ADC

(analog-to-digital converter). Four receiver channels

have 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 1200 MHz for four RX or 600

MHz.

The device contains a SYSREF timing detector to

allow optimization of the SYSREF input timing relative

to the device clock.