Texas Instruments ADS42JB49EVM

Overview

ADS42JB49EVM from Texas Instruments is an evaluation module designed to accelerate characterization and system integration of the ADS42JB49 14-bit, dual-channel, 250-MSPS analog-to-digital converter with JESD204B interface. It integrates the ADS42JB49 ADC, LMK04828 ultra-low-jitter clock jitter cleaner, transformer-coupled analog inputs, and FMC connector for direct interfacing with FPGA-based capture platforms such as the TSW14J5xEVM.

For engineers reviewing the ADS42JB49EVM datasheet, ADS42JB49EVM pinout, ADS42JB49EVM application, or ADS42JB49EVM equivalent, this page provides verified hardware configuration details, JESD204B subclass 1 clocking support, USB-controlled GUI operation, HSDC Pro software compatibility, and FMC-based interoperability with FPGA development systems.

Technical Context

The ADS42JB49EVM implements a complete JESD204B subclass 1 timing solution using the onboard LMK04828, which delivers synchronized DEVCLK (250 MHz LVPECL) and SYSREF signals to both the ADS42JB49 ADC and mating FPGA capture board. The EVM supports configurable sampling rates up to 250 MSPS, dual-channel simultaneous capture, and digital gain control per channel (–2.7 dB to +6 dB).

Hardware-level control includes dedicated jumpers for reference selection (internal 10-MHz oscillator or external REF OSC_IN), power enable for VCXO, USB/FMC interface mode, and CPLD programming via JTAG. Signal integrity is maintained through transformer-coupled single-ended analog inputs (J1/J2), differential clock routing, and layout-optimized high-speed signal paths for JESD204B lanes.

Key Specifications

Availability

ADS42JB49EVM is available at Aetrix Electronics and suitable for high-speed data acquisition, radar signal processing, communications test equipment, and instrumentation requiring stable component supply and rapid ADC evaluation capability.

Supply support for ADS42JB49EVM 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 headquartered in Dallas, Texas, specializing in analog, embedded processing, and high-performance data converter technologies.

The ADS42JB49EVM belongs to TI's high-speed data converter evaluation platform family, engineered to reduce time-to-validation for JESD204B-based systems by integrating precision clocking, FPGA-ready interconnect, and intuitive GUI-driven configuration.

FAQ

What is the primary function of the ADS42JB49EVM?

The ADS42JB49EVM is an evaluation module built around the ADS42JB49 14-bit, 250-MSPS dual-channel ADC. Its purpose is to enable rapid performance validation and system-level integration testing - including JESD204B link establishment, clock synchronization, analog input response, and digital data capture - using the TSW14J5xEVM and HSDC Pro software. The ADS42JB49EVM itself is not a production component but a validated reference platform for design-in acceleration.

Which FPGA development platforms are compatible with the ADS42JB49EVM?

The ADS42JB49EVM features an FMC-LPC (ANSI/VITA 57.1) connector that enables direct mechanical and electrical compatibility with any FPGA development board supporting the FMC standard, including Xilinx Kintex/Virtex-based platforms and Altera/Intel Stratix boards. TI specifically validates interoperability with the TSW14J5xEVM, but third-party FMC carriers with JESD204B subclass 1 receiver support can also interface directly without adapter hardware.

Does the ADS42JB49EVM include its own clock generation circuitry?

Yes, the ADS42JB49EVM integrates the TI LMK04828 clock jitter cleaner, which generates ultra-low-jitter sampling clocks (e.g., 250 MHz DEVCLK) and synchronized SYSREF signals required for JESD204B subclass 1 operation. It accepts either the onboard 100-MHz VCXO or an external reference via J7 (LMK CLKIN1_P), and outputs clocks on J10/J15 (250 MHz) and J17/J4 (6.25 MHz), all accessible via SMA connectors or test points on the ADS42JB49EVM board.

Can the ADS42JB49EVM be used without the TSW14J5xEVM?

No - the ADS42JB49EVM lacks on-board memory or data streaming capability and relies on the TSW14J5xEVM's FPGA and DDR3 memory to capture, buffer, and transfer sampled ADC data to a host PC. While the ADS42JB49EVM provides full register access and real-time configuration via USB, raw ADC output remains inaccessible without a JESD204B subclass 1 receiver platform like the TSW14J5xEVM or a custom FPGA implementation.

What software tools are required to operate the ADS42JB49EVM?

Two software components are mandatory: the ADS42JBxx GUI (provided by TI) for low-level configuration of the ADS42JB49 ADC registers and LMK04828 clock settings, and the High Speed Data Converter Pro (HSDC Pro) GUI for data capture, visualization, FFT analysis, and statistical metrics. Both tools run on Windows and require proper USB driver installation and firmware download to the TSW14J5xEVM before first use of the ADS42JB49EVM.