Texas Instruments ADS42B49EVM

Overview

ADS42B49EVM from Texas Instruments is an evaluation module designed to accelerate development and performance validation of the ADS42B49 dual-channel, 14-bit, 250-MSPS analog-to-digital converter. It provides full hardware interface, configurable LVDS/CMOS output paths, on-board clock conditioning (including CDCE72010 option), and op-amp–driven or transformer-coupled analog input paths. The EVM enables real-time waveform capture and FFT analysis when paired with TI's TSW1400 data capture card.

For engineers reviewing the ADS42B49EVM datasheet, ADS42B49EVM pinout, ADS42B49EVM application, or ADS42B49EVM equivalent, this page delivers verified technical context, jumper-configurable signal chain options, ADC performance metrics (69.9 dBFS SNR, 84.8 dBFS SFDR), USB-based GUI control, and integration guidance with High Speed Data Converter Pro software.

Technical Context

The ADS42B49EVM implements a complete signal chain for the ADS42B49 ADC, supporting both serial SPI configuration and parallel CMOS output modes. It integrates dual-channel analog front-end options - transformer-coupled (default) or THS4509 op-amp–driven - with selectable bandpass filtering and DC biasing.

On-board clock management includes transformer-coupled 250-MHz reference input or programmable CDCE72010 clock driver supporting 122.88 MHz / 245.76 MHz LVCMOS outputs. Jumper-selectable power domains (+1.8VA, +1.8VD, +3.3VCLK, +5V) and high-performance mode (HP[1:11]) enable full ADC specification compliance at 250 MSPS.

Key Specifications

Availability

ADS42B49EVM is available at Aetrix Electronics and suitable for high-speed data acquisition, radar prototyping, communications test equipment, and instrumentation requiring stable component supply and rapid ADC evaluation capability.

Supply support for ADS42B49EVM 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 high-speed data conversion technologies, with decades of leadership in precision ADC design and evaluation platforms.

The ADS42B49EVM belongs to TI's high-speed ADC evaluation module product line, engineered specifically to de-risk system-level integration of dual-channel, 14-bit, 250-MSPS converters in demanding RF, test & measurement, and defense applications.

FAQ

What is the primary function of the ADS42B49EVM?

The ADS42B49EVM is an evaluation module built to validate and characterize the ADS42B49 dual-channel, 14-bit, 250-MSPS analog-to-digital converter. It provides hardware infrastructure-including configurable analog inputs, clock conditioning, LVDS/CMOS output routing, and SPI-based GUI control-to enable rapid system-level testing and performance benchmarking without custom PCB development. The ADS42B49EVM must be used with TI's TSW1400 capture card and High Speed Data Converter Pro software for full functionality.

Does the ADS42B49EVM support both LVDS and CMOS output formats?

Yes, the ADS42B49EVM supports both DDR LVDS (default) and 1.8-V parallel CMOS output configurations. Switching between them requires specific jumper and component changes per Table 5 in the SLAU477A user's guide: installing SN74AVC16T245 buffers (U12/U13), removing RN5–RN12 arrays, and shunting JP26/JP27. CMOS data is routed to 40-pin connectors J1 (Channel A) and J2 (Channel B), enabling direct FPGA or ASIC interfacing without differential receivers.

Can the ADS42B49EVM operate with an external clock source other than the on-board CDCE72010?

Yes, the ADS42B49EVM accepts external clock signals directly via J19 using transformer coupling (T6, default) or through the CDCE72010 clock driver (optional). When using an external generator, a high-quality, low-phase-noise 250-MHz signal is required to achieve published performance (e.g., 69.9 dBFS SNR). The board includes layout provisions for bandpass filtering and VCXO/crystal integration, but no internal PLL or frequency synthesis beyond the CDCE72010 option.

What software is required to configure and control the ADS42B49EVM?

The ADS42B49EVM requires the ADS42Bxx_GUI software (v3.x or later) for register-level configuration-such as enabling high-performance mode (HP[1:11]), setting data format (Offset Binary), configuring gain/test patterns, and adjusting LVDS/CMOS drive strength-and High Speed Data Converter Pro (HSDCPro v3.1+) for data capture, FFT analysis, and coherent tone generation. Both tools are provided by Texas Instruments and installed separately; USB drivers are included in the GUI installer directory.

Is the ADS42B49EVM compliant with FCC Part 15 regulations?

The ADS42B49EVM is classified as a Class A digital device under FCC Part 15 and has been tested for compliance. It may cause harmful interference in residential environments and is intended for commercial/industrial R&D use only. Per TI's standard terms, it is not authorized for resale or incorporation into finished products without additional regulatory certification. Users must operate it in shielded labs or under experimental licenses if emissions testing is required.