Texas Instruments ADS5272EVM

Overview

ADS5272EVM from Texas Instruments is an evaluation module designed to simplify performance testing of the ADS5272 - a 12-bit, 40 MSPS analog-to-digital converter with LVDS outputs and transformer-coupled single-ended inputs. It supports internal/external reference selection, register-level control via RS232, and interoperability with the ADSDeSer-50EVM for data deserialization.

For engineers reviewing the ADS5272EVM datasheet, ADS5272EVM pinout, ADS5272EVM application, or ADS5272EVM equivalent, this board enables rapid validation of high-speed ADC signal chain behavior, clock jitter sensitivity, LVDS timing margins, and register-configurable operation modes including power-down and MSB/LSB-first data formatting.

Technical Context

The ADS5272EVM interfaces directly with the ADS5272 ADC (U1), providing dedicated 3.3V analog (AVDD), digital (DVDD), and LVDS output (LVDD) supplies, plus a 3.3V clock driver rail (AW). It uses SMA connectors (J1–J15) for eight differential input channels and P6 for 80-pin LVDS output routing to the ADSDeSer-50EVM.

On-board CY8C27243-24PVXI microcontroller (U4) manages serial communication over DB9 (P5), enabling real-time register access, custom pattern generation, and software-initiated reset - all while supporting hardware pushbuttons (SW1–SW3) and indicator LEDs (RST, PD, Ref, SDI) for immediate status feedback.

Key Specifications

Availability

ADS5272EVM is available at Aetrix Electronics and suitable for high-speed data acquisition systems, communications infrastructure prototyping, and medical imaging front-end development requiring stable component supply and full-spectrum ADC evaluation capability.

Supply support for ADS5272EVM 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 conversion technologies.

The ADS5272EVM belongs to TI's precision high-speed ADC evaluation platform family, engineered specifically to accelerate characterization and integration of multi-channel, LVDS-output ADCs in demanding sampling applications up to 70 MSPS.

FAQ

What is the primary function of the ADS5272EVM?

The ADS5272EVM is an evaluation module built to characterize the ADS5272 - a 12-bit, 40 MSPS analog-to-digital converter with LVDS outputs. It provides transformer-coupled analog inputs, configurable reference selection, serial register control, and direct LVDS output routing to the ADSDeSer-50EVM. The ADS5272EVM enables full functional validation of the ADS5272 under real-world signal integrity and timing conditions without custom PCB design.

Does the ADS5272EVM support both internal and external voltage references?

Yes, the ADS5272EVM supports both internal and external reference configurations. By default, it uses the ADS5272's internal reference; asserting SW3 switches the device to accept external REFT and REFB signals supplied via terminal block P1. The Ref LED illuminates when internal reference mode is active. This dual-reference capability allows users to evaluate noise, drift, and dynamic range trade-offs using either on-chip or precision external references with the ADS5272EVM.

How is the ADS5272EVM connected to a host PC for register control?

The ADS5272EVM connects to a host PC via a DB9 RS232 interface (P5), using a provided serial cable and Windows-based ADS527xEVM_Software. The onboard CY8C27243-24PVXI microcontroller handles protocol translation between PC commands and ADS5272 register writes. Users select the correct COM port, then access registers to configure power-down, MSB/LSB-first mode, test patterns, and channel enable states - all without modifying hardware. This serial interface is integral to ADS5272EVM operation and enables repeatable, scriptable ADC setup.

Can the ADS5272EVM operate independently, or does it require the ADSDeSer-50EVM?

The ADS5272EVM can operate independently for basic functionality - including power-up initialization, register access, power-down control, and LED status monitoring - but full data capture requires the ADSDeSer-50EVM. The ADS5272EVM outputs serialized LVDS data through its 80-pin P6 connector, which is electrically and mechanically designed for mating with the ADSDeSer-50EVM. Without that deserializer board, raw LVDS bitstreams cannot be converted into parallel digital words for PC analysis or oscilloscope observation.

What clock signal requirements apply to the ADS5272EVM?

The ADS5272EVM accepts a clean, low-jitter 3 Vpp clock signal via SMA connector J17. It supports both sinusoidal and square-wave inputs, with maximum frequency determined by the ADS5272 device specification (up to 40 MSPS for the ADS5272 variant). The board includes a dedicated 3.3V clock driver supply (AW) and relies on the ADS5272's internal clock conditioning. Clock integrity directly impacts SNR and SFDR measurements, making source quality critical during ADS5272EVM evaluation.