Texas Instruments ADC34J43EVM

Overview

ADC34J43EVM from Texas Instruments is an evaluation module designed to assess the ADC34J43 - a quad-channel, 14-bit, JESD204B-compliant analog-to-digital converter operating at up to 80 MSPS with 1.8-V single-supply operation, onboard LMK04828 clock generator, and transformer-coupled differential input circuitry for RF sampling applications in communications infrastructure.

For engineers reviewing the ADC34J43EVM datasheet, ADC34J43EVM pinout, ADC34J43EVM application, or ADC34J43EVM equivalent, this page delivers verified hardware configuration options, JESD204B lane setup guidance, USB-SPI GUI control details, DC/AC coupling resistor swap instructions, and power supply jumper settings specific to the ADC34J43EVM revision.

Technical Context

The ADC34J43EVM implements a full signal chain for evaluating the ADC34J43, featuring four SMA analog inputs routed through dual-transformer differential baluns, an onboard LMK04828 clock synthesizer supporting SYSREF distribution, and configurable 1.8-V ADC core and 3.3-V clock domain power paths via jumpers JP9–JP13.

It supports both AC- and DC-coupled input modes: AC mode uses default 50-Ω transformer termination, while DC mode requires resistor swaps (R137/R216/R225/etc.) per Table 7 and leverages pre-installed THS4541RGT amplifiers - enabling baseband and wideband IF sampling without external signal conditioning.

Key Specifications

Availability

ADC34J43EVM is available at Aetrix Electronics and suitable for RF receiver design, 5G small-cell development, software-defined radio prototyping, and high-speed data acquisition systems requiring stable component supply and rapid evaluation turnaround.

Supply support for ADC34J43EVM 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 and embedded processing technologies, with leadership in high-performance data converters and clock solutions.

The ADC34J43EVM belongs to TI's high-speed ADC evaluation platform family, engineered specifically to accelerate validation of JESD204B-based multichannel receivers in wireless infrastructure and test equipment.

FAQ

What is the primary function of the ADC34J43EVM?

The ADC34J43EVM is an evaluation module built to characterize the ADC34J43 - a quad-channel, 14-bit, JESD204B-compliant analog-to-digital converter. It provides complete signal conditioning, clock generation (via LMK04828), power regulation, and USB-SPI interface to enable rapid performance validation of dynamic parameters like SNR, SFDR, and JESD204B link stability. The ADC34J43EVM does not operate as a standalone ADC but serves exclusively as a hardware reference platform for the ADC34J43 device.

Does the ADC34J43EVM support DC-coupled analog inputs?

Yes, the ADC34J43EVM supports DC-coupled analog inputs using pre-installed THS4541RGT amplifiers. To enable DC coupling, users must replace specific surface-mount resistors (R137, R216, R225, R227, R228, R218, R232, R235) per Table 7 in the SLAU579D user's guide. The configured outputs are Channels B and C only; AC-coupled mode remains active on all four channels by default.

Which clock sources can be used with the ADC34J43EVM?

The ADC34J43EVM supports two clock source configurations: (1) onboard LMK04828 clock generator (default), providing programmable sampling clocks and synchronized SYSREF for JESD204B compliance; and (2) external single-ended clock applied to EXT_ADC_CLK (J9). The LMK04828 is powered via JP12/JP13 and configured through the HSDC Pro GUI. External clock mode disables LMK04828 and routes the signal directly to the ADC34J43 clock input.

How is the ADC34J43EVM powered, and what are the voltage rails?

The ADC34J43EVM is powered via a 5-V barrel jack (J20). Internally, it generates regulated 1.8-V for the ADC34J43 core and 3.3-V for the LMK04828 and CPLD using low-noise LDOs (TPS7A4700). JP9/JP10 select the 1.8-V LDO path (default) or switcher bypass; JP12/JP13 select the 3.3-V LDO path (default) or switcher bypass. No external 1.8-V or 3.3-V supplies are required.

What software is used to control the ADC34J43EVM?

The ADC34J43EVM is controlled using Texas Instruments' HSDC Pro GUI software, installed via the ADC3xxxx_Installer_vxpx package. The GUI provides tabbed register access (Common, ADC34Jxx, LMK04828), real-time configuration of dither, chopper, gain, test patterns, clock dividers, and SYSREF settings, and integrates with TSW14J56 pattern generators for full JESD204B link testing. USB drivers are installed automatically during first connection.