Texas Instruments DAC3282EVM

Overview

DAC3282EVM from Texas Instruments is an evaluation module designed to accelerate RF signal chain development for high-speed, dual-channel DAC-based transmitters. It integrates the DAC3282 16-bit, 800-MSPS digital-to-analog converter, TRF372017 quadrature modulator with integrated RF synthesizer, and CDCE62005 programmable clock generator - enabling end-to-end WCDMA/LTE waveform generation and RF performance validation at up to 2.4 GHz LO.

For engineers reviewing the DAC3282EVM datasheet, DAC3282EVM pinout, DAC3282EVM application, or DAC3282EVM equivalent, this board supports rapid characterization of spectral purity (e.g., ACPR < −72 dBc at 30-MHz offset), two-tone IMD, interpolation effects, and clocking architecture interactions in wireless infrastructure and broadband communications test environments.

Technical Context

The DAC3282EVM implements a complete RF transmit signal chain: the DAC3282 provides 2× interpolation with inverse sinc filtering, feeding baseband I/Q data to the TRF372017 modulator, which upconverts to RF using an integrated PLL/VCO referenced by the CDCE62005's LVPECL outputs. The onboard TCXO (10 MHz) serves as system reference for all clock synthesis.

Software-controlled register access enables real-time configuration of DAC interpolation (2×), mixer settings, gain per channel, temperature monitoring, CDC divider values (DAC_CLK, Mod_Ref, FIFO_OSTR), and TRF372017 LO targeting (e.g., 2120 MHz, 2400 MHz). Performance validation includes WCDMA ACPR measurements at 3.84-MHz bandwidth and two-tone IMD at IF = 20/21 MHz.

Key Specifications

Availability

DAC3282EVM is available at Aetrix Electronics and suitable for wireless infrastructure prototyping, RF transmitter validation, and high-speed DAC/RF modulator co-design requiring stable component supply and full evaluation ecosystem support.

Supply support for DAC3282EVM 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 specializing in analog, embedded processing, and connectivity technologies, with leadership in data converters, RF, and clock solutions.

The DAC3282EVM belongs to TI's high-speed data converter evaluation platform family, engineered specifically for fast, accurate characterization of RF-DAC signal chains in 3G/4G wireless base station and broadband communications applications.

FAQ

What is the primary function of the DAC3282EVM?

The DAC3282EVM is an evaluation module that enables full-system testing of the DAC3282 dual-channel DAC in conjunction with the TRF372017 quadrature modulator and CDCE62005 clock generator. It allows engineers to generate, configure, and measure high-fidelity RF waveforms - including WCDMA and LTE signals - without designing custom hardware. The DAC3282EVM supports real-time software control, interpolation tuning, LO frequency selection, and spectral performance validation critical for wireless infrastructure design.

Which devices are integrated on the DAC3282EVM board?

The DAC3282EVM integrates three core ICs: the DAC3282 16-bit, 800-MSPS dual-channel DAC; the TRF372017 quadrature modulator with integrated RF synthesizer; and the CDCE62005 programmable clock generator. It also includes a 10-MHz TCXO reference oscillator, power regulation circuitry (TPS7A4501 LDOs), and configurable jumpers for DAC-only, filtered, or alternate modulator operation. The DAC3282EVM does not contain microcontrollers or host processors - it operates under PC-based GUI control via USB.

Does the DAC3282EVM support external clock sources?

Yes, the DAC3282EVM supports external clock injection at J25 (up to 614.4 MHz) by reconfiguring the CDCE62005 via software: disable the internal VCO, set input level to LVPECL, select Primary Input, and route outputs to primary source. This bypasses the onboard CDCE62005 VCO and allows synchronization to external timing systems - essential for phase-coherent multi-board setups or lab-grade signal integrity validation using the DAC3282EVM.

Can the DAC3282EVM be used without the TSW3100 pattern generator card?

No - the DAC3282EVM requires the TSW3100 pattern generation card to provide high-speed DDR data streams (e.g., WCDMA, multi-tone) to the DAC3282. The DAC3282EVM lacks on-board memory or pattern generation capability. Its FPGA interface is designed exclusively for TSW3100 compatibility, and software initialization assumes TSW3100 firmware v2.2+ and 125-MHz oscillator operation. Without the TSW3100, the DAC3282EVM cannot produce meaningful RF output signals.

What RF performance metrics are validated in the DAC3282EVM user guide?

The DAC3282EVM user guide (SLAU304C) documents measured RF performance including two-tone IMD (−62.9 dBc at 2400 MHz LO), WCDMA ACPR (−72.3 to −79.2 dBc at 30-MHz offset), and spectral regrowth across LO frequencies of 1966.4 MHz, 2120 MHz, and 2400 MHz. All results reflect combined DAC3282 + TRF372017 chain performance, with DAC clock fixed at 614.4 MHz and 2× interpolation enabled - providing realistic benchmarks for system-level design using the DAC3282EVM.