Texas Instruments AFE7920EVM

Overview

AFE7920EVM from Texas Instruments is an evaluation module designed to accelerate development of RF systems using the AFE7920 quad-channel RF transceiver. It supports 12-GSPS transmit DACs, 3-GSPS receive ADCs, dual 3-GSPS feedback ADCs, up to 1200-MHz TX/FB bandwidth, and JESD204C interface at up to 29.5 Gbps - enabling rapid prototyping for 5G mMIMO base station front-ends.

For engineers reviewing the AFE7920EVM datasheet, AFE7920EVM pinout, AFE7920EVM application, or AFE7920EVM equivalent, this module provides full access to the AFE7920's RF sampling architecture, DUC/DDC signal processing chains, TDD timing control, and SerDes synchronization - critical for validating wideband transceiver performance in macro RRU and active antenna system designs.

Technical Context

The AFE7920EVM implements a complete reference design for the AFE7920 IC, including clock distribution (PLL/VCO + optional external CLK), SYSREF alignment, analog RF front-end with baluns and filtering, and FPGA-based JESD204B/C link management via TI's TSW14J56EVM and Kintex-7 host platform. It enables real-time capture and generation of multi-band 4G/5G waveforms across four independent TX/RX channels plus two feedback paths.

Hardware-level TDD switching control, DSA calibration support, and configurable DDC/DUC decimation/interpolation ratios are exposed through onboard headers and GUI-driven firmware - allowing engineers to validate dynamic range, EVM, ACLR, and spurious performance under realistic base station operating conditions without custom PCB development.

Key Specifications

Availability

AFE7920EVM is available at Aetrix Electronics and suitable for macro remote radio unit (RRU), active antenna system (AAS) mMIMO development, and small cell base station prototyping requiring stable component supply and full production-grade validation support.

Supply support for AFE7920EVM includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions, with leadership in high-speed data converters, RF transceivers, and industrial-grade evaluation platforms.

The AFE7920EVM belongs to TI's AFE79xx evaluation module family, engineered specifically to de-risk RF front-end design for wireless infrastructure - providing turnkey hardware, firmware, GUI tools, and reference designs aligned with 3GPP 5G NR deployment requirements.

FAQ

What is the primary function of the AFE7920EVM?

The AFE7920EVM is an evaluation module that provides full hardware and software access to the AFE7920 quad-channel RF transceiver. It enables engineers to characterize TX/RX/FB chain performance, validate JESD204C link stability, test TDD switching latency, and develop firmware for 5G mMIMO base station applications - all without designing custom carrier hardware. The AFE7920EVM includes calibrated RF paths, clock synthesis, and FPGA interface logic required to operate the AFE7920IABJ device in production-like conditions.

Does the AFE7920EVM support both JESD204B and JESD204C protocols?

Yes, the AFE7920EVM supports both JESD204B Subclass 1 and JESD204C protocols via its 8-lane SerDes interface, with lane rates scalable from 6.144 Gbps to 29.5 Gbps. This allows compatibility with legacy FPGA platforms using JESD204B while enabling higher throughput and improved deterministic latency with JESD204C - a capability directly inherited from the AFE7920 IC's physical layer design. The AFE7920EVM's firmware and GUI provide configuration options for encoding (8b/10b or 64b/66b), lane count, and subclass synchronization.

Can the AFE7920EVM be used with transceivers other than the AFE7920?

No - the AFE7920EVM is specifically designed and validated for the AFE7920 IC only. While the AFE7921, AFE7988, and AFE7989 share the same FCBGA-400 package and some functional overlap, the AFE7920EVM's RF front-end filtering, clock tree, DSA calibration sequences, and firmware are optimized for the AFE7920's 1200-MHz TX/FB bandwidth and dual-band DUC/DDC architecture. Using it with other AFE79xx variants may result in degraded RF performance or unsupported features. The AFE7920EVM does not support AFE7921 or AFE7989 operation out of the box.

What RF interfaces does the AFE7920EVM provide?

The AFE7920EVM provides 4× SMA connectors for TX outputs, 4× SMA connectors for RX inputs, and 2× SMA connectors for feedback (FB) inputs - all DC-coupled and impedance-matched to 50 Ω. Each path includes balun-based differential-to-single-ended conversion, anti-aliasing/ reconstruction filtering, and adjustable gain stages aligned with the AFE7920's internal DSA ranges (40 dB TX, 25 dB RX/FB). These interfaces allow direct connection to power amplifiers, LNAs, and couplers in macro RRU or active antenna system test benches.

Is the AFE7920EVM compatible with TI's TSW14J56EVM pattern generator?

Yes - the AFE7920EVM is fully compatible with the TSW14J56EVM as a high-speed data source/sink, leveraging TI's standardized FPGA-based JESD204 interface stack. The AFE7920EVM's onboard Kintex-7 FPGA implements the same JESD204B/C PHY and link layer as the TSW14J56EVM, enabling seamless loopback testing, real-time waveform injection, and deterministic latency measurement. This integration is documented in TI's AFE7920EVM user's guide and supported by TI's GUI software suite for the AFE7920EVM.