Texas Instruments ADS131B04-Q1EVM

Overview

ADS131B04-Q1EVM from Texas Instruments is an evaluation module designed to accelerate development and performance validation of the ADS131B04-Q1 - a 4-channel, simultaneously-sampling, 24-bit delta-sigma ADC for high-accuracy energy metering and power quality monitoring. It integrates the target ADC, ultra-low-noise LDO regulation (3.3 V), configurable analog front-end with differential input terminal blocks (J1–J4), and USB-powered PHI controller interface.

For engineers reviewing the ADS131B04-Q1EVM datasheet, ADS131B04-Q1EVM pinout, ADS131B04-Q1EVM application, or ADS131B04-Q1EVM equivalent, this platform delivers ready-to-run hardware/software co-validation for ΔΣ ADC signal chain design, SPI register-level control, spectral analysis, and real-time time-domain waveform capture on Windows 7/8/10.

Technical Context

The ADS131B04-Q1EVM implements a complete evaluation system comprising two PCBs: the main EVM board hosting the ADS131B04-Q1 ADC, analog signal conditioning, onboard 8.192-MHz CMOS oscillator (Y1), LP5907 LDO, and jumper-configurable input termination (JP1–JP4); and the separate PHI controller board providing USB 2.0 host interface, SPI/I²C bridge logic, and regulated 5-V/3.3-V power delivery via 60-pin shrouded connector J5.

Digital interfacing supports SPI frame lengths of 16/24/32 bits (default 24-bit), DRDY-driven data-ready signaling, and register-level configuration through GUI-accessible MODE, DATA_RATE, and CONFIG registers. Clock selection is hardware-jumpered (JP6) for 8.192 MHz (HR mode), 4.096 MHz (LP mode), or 2.048 MHz (VLP mode), synchronized with corresponding register settings per the ADS131B04-Q1 datasheet.

Key Specifications

Availability

ADS131B04-Q1EVM is available at Aetrix Electronics and suitable for energy metering reference design validation, power quality analyzer prototyping, and protection relay algorithm testing requiring stable component supply and full signal-chain evaluation capability.

Supply support for ADS131B04-Q1EVM 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 specializing in analog, embedded processing, and high-reliability ICs for automotive, industrial, and communications applications.

The ADS131B04-Q1EVM belongs to TI's precision analog evaluation platform product line, engineered specifically to de-risk adoption of high-performance, AEC-Q100 qualified delta-sigma ADCs in safety-critical power measurement systems.

FAQ

What is the primary function of the ADS131B04-Q1EVM?

The ADS131B04-Q1EVM is an evaluation module that enables rapid hardware and software validation of the ADS131B04-Q1 - a 4-channel, simultaneously-sampling, 24-bit delta-sigma ADC. It provides complete signal chain access including analog input terminals, SPI register control, spectral/time-domain analysis tools, and USB-based GUI operation on Windows platforms. The ADS131B04-Q1EVM eliminates the need for custom interface design during early-stage development of energy metering or power quality systems.

Does the ADS131B04-Q1EVM require an external power supply?

No - the ADS131B04-Q1EVM is fully USB-powered via the included PHI controller board, which derives 5 V and 3.3 V supplies from the host PC's USB port. The onboard LP5907 LDO delivers ultra-low-noise 3.3 V to the ADC's analog section, while digital power is supplied directly from the PHI. External AVDD/DVDD supplies are optional and require jumper modifications (JP9) and component removal (R45), but are not needed for standard evaluation.

How does the ADS131B04-Q1EVM connect to a host computer?

The ADS131B04-Q1EVM connects to a Windows host PC using a standard USB-A-to-Micro-B cable linked to the PHI controller board. Communication occurs over USB 2.0 (or higher), with the PHI acting as a bridge between USB and the SPI/I²C interfaces of the ADS131B04-Q1 and onboard EEPROM. Device drivers and LabVIEW Run-Time Engine are installed during GUI setup, enabling seamless data capture and register-level control without additional hardware.

What software tools are included with the ADS131B04-Q1EVM?

The ADS131B04-Q1EVM includes a Windows-based GUI with four core analysis pages: Register Map Config (for direct read/write of ADS131B04-Q1 registers), Time Domain Display (for waveform capture and voltage-code conversion), Spectral Analysis (for FFT-based frequency-domain evaluation), and Histogram Analysis (for noise and linearity assessment). All tools operate in real time and support data export to text files for post-processing.

Can the ADS131B04-Q1EVM be used with TI LaunchPad development kits?

Yes - the ADS131B04-Q1EVM features unpopulated 20-pin LaunchPad-compatible headers (J7 and J8) on its bottom side. When populated with appropriate connectors, it functions as a BoosterPack™-compliant module, enabling direct integration with TI MSP432 or TM4C LaunchPad development kits. Pin mapping aligns with standard 40-pin LaunchPad layouts, supporting SCLK, DOUT, DIN, DRDY, CS, SYNC/RESET, CLK, and power rails for embedded firmware validation.