Texas Instruments ADS4129EVM

Overview

ADS4129EVM from Texas Instruments is an evaluation module designed to characterize the ADS4129 12-bit, 250-MSPS analog-to-digital converter under configurable signal, clock, reference, and power supply conditions. It supports transformer-coupled single-ended analog input (J6), external or onboard CDCE72010-derived clocking (up to 245.76 MHz), and dual 1.8-V analog/digital supply generation via TPS62562 switching regulator or TPS79618 LDO.

For engineers reviewing the ADS4129EVM datasheet, ADS4129EVM pinout, ADS4129EVM application, or ADS4129EVM equivalent, this page provides verified configuration options for LVDS data capture, clock source selection (direct SMA, crystal-filtered LVCMOS, or differential LVPECL), analog input path routing (transformer vs. THS4509 amplifier), and power architecture trade-offs between efficiency and noise performance.

Technical Context

The ADS4129EVM implements a modular signal chain with three independently configurable subsystems: analog input (J6/J8 → transformer T1/T4 or THS4509 → ADC), clock interface (J19 → direct ADC clock or CDCE72010 → Y0/Y1P/Y1N → ADC), and power delivery (3.3-V input → TPS62562/TPS79618 → 1.8VA/1.8VD). Jumper-based control enables hardware-level mode selection without firmware.

It integrates TI's CDCE72010 programmable clock buffer with factory-configured /4 division from a 983.04-MHz VCXO (not populated by default), supporting 245.76-MHz LVCMOS output through an optional crystal filter or differential LVPECL output. The THS4509 operational amplifier section is fully isolated and powered separately (J9/J11) for flexible front-end conditioning.

Key Specifications

Availability

ADS4129EVM is available at Aetrix Electronics and suitable for high-speed data converter evaluation, RF receiver characterization, and wideband digitizer development requiring stable component supply, traceable sourcing, and long-term lifecycle support.

Supply support for ADS4129EVM 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 data converters, clocking, and high-speed interface technologies.

The ADS4129EVM belongs to TI's high-speed ADC evaluation platform family, engineered specifically to accelerate validation of RF-sampling and IF-digitizing systems across communications, test equipment, and radar applications.

FAQ

What is the primary function of the ADS4129EVM?

The ADS4129EVM is an evaluation module built to assess the performance of the ADS4129 12-bit, 250-MSPS analog-to-digital converter. It provides configurable analog input paths (transformer or THS4509 amplifier), multiple clocking schemes (direct or CDCE72010-derived), and flexible power delivery (LDO or switching regulator) - all implemented via physical jumpers and surface-mount zero-ohm resistors. The ADS4129EVM enables repeatable, hardware-controlled testing without software dependency.

Does the ADS4129EVM include the ADS4129 IC pre-mounted?

Yes, the ADS4129EVM ships with the ADS4129 ADC pre-installed and fully integrated into the signal chain. The board is designed exclusively for evaluating this specific device - not as a generic platform for multiple ADCs. All jumper configurations, power routing, clock interfaces, and analog input circuits are validated for use with the ADS4129, including its LVDS output timing, 1.8-V supply requirements, and sampling rate limits.

Can the ADS4129EVM generate its own clock signal without external equipment?

No - the ADS4129EVM does not generate a clock autonomously. While it supports onboard clock conditioning using the CDCE72010 clock buffer, that IC requires an external 20-MHz reference clock applied to J19 to produce its 245.76-MHz output. The VCXO (983.04 MHz) and crystal filter needed for optimal CDCE72010 operation are not populated by default and must be added by the user. For immediate use, a clean external clock source must be connected to J19.

What software tools are compatible with the ADS4129EVM for data capture?

The ADS4129EVM is validated with Texas Instruments' High Speed Data Converter Pro (HSDC Pro) software when used with the TSW1400 data capture board connected to J10. HSDC Pro supports FFT analysis, SNR/SFDR measurement, and register-level control of the ADS4129 via SPI. The ADS4129EVM's jumper settings (e.g., JP11/JP15) determine whether SPI control or parallel pin-mode operation is active - both modes are fully supported by TI's official toolchain.

How is analog input configured on the ADS4129EVM by default?

By default, the ADS4129EVM routes a single-ended 50-Ω signal from SMA connector J6 through two cascaded Mini-Circuits ADT4-1WT transformers to produce a differential input for the ADS4129. This configuration uses R84, R94, R97, and R98 installed; R82, R95, R96, R99, and R106 removed. No external amplifier or DC coupling is applied - the path is AC-coupled, transformer-isolated, and optimized for high-frequency IF signals above 100 MHz.