Texas Instruments ADS5270EVM

Overview

ADS5270EVM from Texas Instruments is an evaluation module designed to simplify performance testing of the ADS527x family of 10- and 12-bit, 40–70 MSPS analog-to-digital converters with LVDS outputs. It supports transformer-coupled single-ended inputs via eight SMA connectors (J1–J15), provides PC-based register control via RS232 interface, and interfaces directly with the ADSDeSer-50EVM for data deserialization.

For engineers reviewing the ADS5270EVM datasheet, ADS5270EVM pinout, ADS5270EVM application, or ADS5270EVM equivalent, this page delivers verified technical context, supply requirements (AVDD=3.3V, DVDD=3.3V, LVDD=1.8–3.3V), clock input specs (clean 3 Vpp, sinusoidal or square-wave), reference selection (internal/external via SW3), and operational indicators (RST, PD, Ref, SDI LEDs).

Technical Context

The ADS5270EVM implements a complete signal chain interface for the ADS527x ADC family, featuring on-board microcontroller (CY8C27243-24PVXI) for serial register access, LVDS output routing to P6 for connection to the ADSDeSer-50EVM, and transformer-coupled analog input paths using Coilcraft T491B series RF transformers (0.1–1500 MHz bandwidth). All power domains-AVDD, DVDD, and LVDD-are independently routed but can be supplied from a single 3.3 V source.

It supports flexible configuration via three pushbuttons (SW1: reset, SW2: power-down, SW3: reference select) and four green indicator LEDs reflecting real-time device state. The board accepts external clock input at J17 and defaults to internal reference unless SW3 is asserted to enable external REFT/REFB via terminal block P1.

Key Specifications

Availability

ADS5270EVM is available at Aetrix Electronics and suitable for high-speed data acquisition systems, communications test equipment, and digital oscilloscope front-end development requiring stable component supply and full evaluation capability for multi-channel LVDS ADCs.

Supply support for ADS5270EVM 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, power management, and interface technologies.

The ADS5270EVM belongs to TI's precision data converter evaluation platform line, engineered specifically to accelerate validation and system integration of high-speed, multi-channel ADCs used in instrumentation, medical imaging, and broadband communications.

FAQ

What is the primary function of the ADS5270EVM?

The ADS5270EVM is an evaluation module that enables functional and performance validation of the ADS527x family of 10- and 12-bit, 40–70 MSPS analog-to-digital converters. It provides transformer-coupled analog inputs, LVDS output routing to the ADSDeSer-50EVM, PC-based register control, and real-time status feedback via LEDs. The ADS5270EVM does not operate as a standalone ADC-it requires the target ADS527x device (e.g., ADS5270, ADS5271) installed as U1 to function.

Which ADC devices are compatible with the ADS5270EVM?

The ADS5270EVM is explicitly designed for the ADS527x family, including ADS5270 (10-bit), ADS5271 (12-bit), and other variants in the same pin-compatible package group. The board accommodates the ADS527xPFC footprint and supports all channel counts (up to 8) and LVDS output configurations defined in the ADS527x datasheets. Compatibility is confirmed by TI's SBAU093A User's Guide and Bill of Materials.

How is the ADS5270EVM powered, and what are the supply requirements?

The ADS5270EVM requires three regulated supplies: AVDD = 3.3 V for the ADC analog section, DVDD = 3.3 V for the onboard microcontroller and RS232 level shifter, and LVDD = 1.8 V to 3.3 V for the LVDS output drivers. All three can be sourced from a single 3.3 V supply for simplified bench testing, as stated in Section 2 of the User's Guide.

Does the ADS5270EVM include software, and how is it installed?

Yes-the ADS5270EVM ships with dedicated evaluation software accessible via CD or download from ti.com. Installation runs via Setup.exe, placing the ADS527xEVM_Software under START > Programs. The software communicates over RS232 (DB9 P5), allows register access, custom pattern generation (12-bit binary), LSB/MSB-first mode selection, and remote reset. The ADS5270EVM firmware and software are co-developed and validated by Texas Instruments.

Can the ADS5270EVM operate without the ADSDeSer-50EVM?

Yes-the ADS5270EVM can power up, initialize, and configure the ADS527x device independently, with status LEDs (RST, PD, Ref, SDI) confirming operation. However, LVDS serialized data output at P6 is intended for connection to the ADSDeSer-50EVM for deserialization into parallel format. Without it, raw LVDS streams require external deserialization hardware or logic analyzers capable of capturing high-speed differential signals.