1 Features

• Octal RF sampling 12-GSPS transmit DACs

• Octal RF sampling 4-GSPS receive ADCs

• Maximum RF signal bandwidth:

– TX/FB: 800 MHz.

• 1200 MHz in 4 channels mode

– RX: 400 MHz

• 800 MHz in 4 channels mode

• RF frequency range: up to 6GHz

• Digital Step Attenuators (DSA):

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

digital steps

– RX/FB: 31/25-dB range, 1-dB step

• Single DUC/DDC per chain

• Dual NCO’s 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

• Macro remote radio unit (RRU)

• Active antenna system mMIMO (AAS)

• Small cell base station

• Distributed Antenna Systems (DAS)

• Repeater

3 Description

The AFE8092 is a high performance, wide bandwidth

multi-channel transceiver, integrating eight RF

sampling transmitter chains, eight RF sampling

receiver chains and two separate RF front end for the

auxiliary chains (feedback paths). The high dynamic

range of the transmitter and receiver chains allows

generating and receiving 3G, 4G and 5G signals

for wireless base stations, while the wide bandwidth

capability makes the AFE8092 devices suitable for

multi-band 4G and 5G base stations.

Each receiver chain includes a 31-dB range DSA

(Digital Step Attenuator), followed by a 4-GSPS

ADC (analog-to-digital converter). 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 digital down converters (DDC) provides up to

400 MHz of combined signal BW in 8 channels

mode and 800MHz in 4 channels mode. In TDD

mode, the receiver channel can be configured to

dynamically switching between traffic receiver (TDD

RX) and wideband feedback receiver (TDD FB), with

the capability of re-using the same analog input for

both purposes.

Each transmitter chain includes a digital up converters

(DUCs) supporting up to 800-MHz combined signal

bandwidth (1200MHz in 4 channels mode). 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.

The feedback path includes a 25-dB range DSA

driving a 4-GSPS RF sampling ADC, shared with

receiver chain, followed by a DDC with up to 800-MHz

bandwidth(1200 MHz in 4-channel mode).