Texas Instruments ADS7056EVM-PDK

Overview

ADS7056EVM-PDK from Texas Instruments is an evaluation module for the ADS7056 - a 14-bit, 2.5-MSPS ultra-low-power SAR ADC in an X2QFN-8 package (1.5 mm × 1.5 mm). It supports unipolar single-ended input (0 V to AVDD), operates from 2.35 V to 3.6 V AVDD and 1.65 V to 3.6 V DVDD, delivers 74.5-dB SINAD at 2 kHz, and consumes only 3.5 mW at full throughput - enabling rapid prototyping of sonar receivers and battery-powered sensing systems.

For engineers reviewing the ADS7056EVM-PDK datasheet, ADS7056EVM-PDK setup guide, ADS7056EVM-PDK interface with MSP430 or Tiva C microcontrollers, or ADS7056EVM-PDK alternative evaluation platforms, this page provides verified hardware configuration details, SPI timing alignment notes, onboard signal conditioning topology, and direct integration guidance with TI's Data Converter SDK and GUI Composer tools.

Technical Context

The ADS7056EVM-PDK implements a complete signal chain for evaluating the ADS7056 ADC: it includes precision analog front-end filtering (anti-aliasing + ESD protection), regulated AVDD/DVDD supplies with low-noise LDOs, configurable reference routing (AVDD as reference), and a standardized 10-pin Samtec QSH connector for host MCU interfacing. The board uses a fixed 3.3-V AVDD and 1.8-V DVDD supply, matching the ADS7056's recommended operating conditions.

It supports all three functional modes of the ADS7056 - acquisition (ACQ), conversion (CNV), and offset calibration (OFFCAL) - via jumper-selectable CS/SCLK control or external microcontroller-driven SPI framing. Timing-critical signals (CS, SCLK, SDO) are routed with controlled impedance and minimized trace length to preserve 60-MHz SPI compliance and meet t_{su_CSCK} (7 ns) and t_{tht_CKCS} (8 ns) requirements.

Key Specifications

Availability

ADS7056EVM-PDK is available at Aetrix Electronics and suitable for sonar receiver development, ultrasonic flow meter validation, thermal imaging sensor interface design, and handheld environmental sensing applications requiring stable component supply and fast-turn evaluation support.

Supply support for ADS7056EVM-PDK 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 and embedded processing technologies with over 90 years of innovation in data converters, power management, and signal chain solutions.

The ADS7056EVM-PDK belongs to TI's Precision Data Converter Evaluation Platform family, engineered specifically to accelerate validation of ultra-low-power, ultra-small SAR ADCs in space-constrained, battery-operated systems such as portable medical devices and IoT edge sensors.

FAQ

What is the primary function of the ADS7056EVM-PDK?

The ADS7056EVM-PDK is an evaluation module designed exclusively to demonstrate and validate the performance of the ADS7056 14-bit, 2.5-MSPS SAR ADC. It provides a fully assembled, tested PCB with calibrated analog input path, regulated dual-supply rails, SPI interface headers, and documentation for immediate lab use - not a production-ready subsystem or standalone sensor node.

Does the ADS7056EVM-PDK support differential input configurations?

No. The ADS7056EVM-PDK implements the ADS7056 in its native single-ended mode using AINP and AINM pins with AVDD as reference. While the ADS7056 itself performs differential sampling (V_AINP – V_AINM), the EVM does not provide external differential signal injection points or transformer-coupled inputs - all analog connections are single-ended with ground-referenced biasing.

Can the ADS7056EVM-PDK operate with AVDD voltages other than 3.3 V?

No - the ADS7056EVM-PDK uses a fixed-output TPS7A05 LDO configured for 3.3 V AVDD and has no onboard voltage selection jumpers or resistor networks to adjust AVDD. To evaluate the ADS7056 at other AVDD levels (e.g., 2.5 V), users must externally inject a regulated supply into the AVDD test point while disabling the onboard LDO per the User's Guide Section 3.2.

How is offset calibration executed on the ADS7056EVM-PDK?

Offset calibration on the ADS7056EVM-PDK is triggered either automatically at power-up (requiring 24 SCLK pulses in the first SPI frame) or manually via host-controlled SPI framing. The EVM includes JP1 and JP2 jumpers to select between auto-calibration mode and external MCU-driven calibration, ensuring repeatable INL/DNL characterization per ADS7056 datasheet Section 8.4.3.

Which software tools are compatible with the ADS7056EVM-PDK?

The ADS7056EVM-PDK is supported by Texas Instruments' Data Converter SDK v4.x and GUI Composer Studio. These tools enable real-time FFT analysis, histogram plotting, SINAD/SFDR measurement, and register-level SPI configuration - all validated against the exact timing and pinout of the ADS7056EVM-PDK hardware revision documented in SBAS769B.