Texas Instruments ADS5273EVM

Overview

ADS5273EVM from Texas Instruments is an evaluation module designed to simplify performance testing of the ADS5273 - 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 RS-232, and interoperability with the ADSDeSer-50EVM for data deserialization in high-speed data acquisition systems.

For engineers reviewing the ADS5273EVM datasheet, ADS5273EVM pinout, ADS5273EVM application, or ADS5273EVM equivalent, this page delivers verified hardware interface details, supply requirements (AVDD=3.3V, DVDD=3.3V, LVDD=1.8–3.3V), clock input specifications (3 Vpp, low-jitter, up to device-rated frequency), and functional validation paths using TI's official evaluation software.

Technical Context

The ADS5273EVM interfaces directly with the ADS5273 ADC, providing transformer-coupled SMA inputs (J1–J15), LVDS output routing to P6 for connection to the ADSDeSer-50EVM, and microcontroller-based serial register access via DB9. It implements on-board power conditioning for AVDD, DVDD, and LVDD rails, with jumper-selectable supply configurations.

Operation includes pushbutton-controlled reset (SW1), power-down (SW2), and internal/external reference selection (SW3), each with dedicated LED indicators (RST, PD, Ref, SDI). The onboard CY8C27243-24PVXI PSoC microcontroller handles RS-232 communication and register writes, enabling real-time configuration of sampling mode, test pattern generation, and LSB/MSB-first data ordering.

Key Specifications

Availability

ADS5273EVM is available at Aetrix Electronics and suitable for high-speed data acquisition, communications test equipment, and medical imaging system development requiring stable component supply, full evaluation toolchain support, and traceable sourcing of TI-qualified hardware.

Supply support for ADS5273EVM 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, delivering analog, embedded processing, and digital signal processing technologies across industrial, automotive, and communications markets.

The ADS5273EVM belongs to TI's precision data converter evaluation platform family, engineered to accelerate validation of multi-channel, high-speed ADCs in systems demanding low-noise sampling, flexible clocking, and deterministic LVDS data capture.

FAQ

What is the primary function of the ADS5273EVM?

The ADS5273EVM is a dedicated evaluation module for the ADS5273 12-bit, 40 MSPS analog-to-digital converter. Its purpose is to enable rapid, repeatable characterization of the ADS5273's dynamic performance-including SNR, SFDR, and THD-under real-world conditions using transformer-coupled inputs, configurable LVDS outputs, and PC-based register control. The ADS5273EVM itself contains no ADC; it hosts and interfaces with the ADS5273 device mounted as U1.

Which power supplies are required to operate the ADS5273EVM?

The ADS5273EVM requires three regulated supplies: AVDD = 3.3 V for the ADS5273 analog section, DVDD = 3.3 V for the CY8C27243 microcontroller and MAX3221 RS-232 level shifter, and LVDD = 1.8 V to 3.3 V for the LVDS output drivers. All can be sourced from a single 3.3 V supply for simplified bench testing, though separate regulation is recommended for noise-sensitive applications involving the ADS5273EVM.

How does the ADS5273EVM connect to a PC for register access?

The ADS5273EVM connects to a PC via its DB9 serial port (P5), using a standard RS-232 cable included with the kit. TI's ADS527xEVM_Software detects available COM ports and establishes communication with the onboard CY8C27243 microcontroller, allowing full read/write access to ADS5273 internal registers-including channel enable, test pattern selection, clock divider, and MSB/LSB-first configuration-without requiring external JTAG or debug hardware.

Can the ADS5273EVM be used without the ADSDeSer-50EVM?

Yes, the ADS5273EVM can operate independently to evaluate ADC functionality, including DC accuracy, gain/offset, and basic timing behavior. However, LVDS data capture requires external deserialization. While raw LVDS signals are accessible at P6, full parallel data reconstruction and real-time waveform analysis require the ADSDeSer-50EVM or a compatible LVDS deserializer. The ADS5273EVM provides no on-board data capture or storage capability.

What clock signal specifications must be met for reliable ADS5273EVM operation?

The ADS5273EVM accepts a clean, low-jitter 3 Vpp clock signal applied to SMA connector J17. Either sinusoidal or square-wave inputs are supported. Maximum clock frequency must align with the ADS5273's rated 40 MSPS sampling rate and associated timing margins; TI recommends consulting the ADS5273 datasheet for setup/hold and jitter tolerance limits. Exceeding these degrades ENOB and increases aperture uncertainty during ADS5273EVM evaluation.