Texas Instruments ADC128S102EVAL/NOPB

Overview

ADC128S102EVAL/NOPB from Texas Instruments (formerly National Semiconductor) is an evaluation board designed to accelerate prototyping and performance validation of the ADC128S102 - a low-power, 12-bit, eight-channel, serial-output SAR analog-to-digital converter operating at up to 1 MSPS. It supports both standalone test equipment use and computer-controlled acquisition via the WaveVision4 Data Capture Board (WV4), enabling real-time time-domain and FFT-based dynamic analysis (SNR, SINAD, THD, SFDR, ENOB).

For engineers reviewing the ADC128S102EVAL/NOPB datasheet, ADC128S102EVAL/NOPB pinout, ADC128S102EVAL/NOPB application, or ADC128S102EVAL/NOPB equivalent, this board delivers validated signal chain configuration for high-fidelity data acquisition in sensor interface, industrial monitoring, and mixed-signal test systems - with dual BNC analog inputs (INA/INB), jumper-selectable channel routing, reference voltage control, and flexible clock sourcing (onboard 16 MHz oscillator or external 50 Ω source).

Technical Context

The ADC128S102EVAL/NOPB implements a complete hardware interface for the ADC128S102 IC, including configurable analog input coupling (AC/DC), eight-channel multiplexing via DIP switches and jumpers (JP1–JP3, DIP1), and independent analog (VA), digital (VD), and 3.3 V (3P3V) supply domains. VA operates from 2.7 V to 5.25 V and serves as both analog supply and reference.

Digital communication uses SPI-compatible 4-wire serial interface (CSB, SCLK, DIN, DOUT) routed to header J3 and test points TP15, supporting both manual logic analyzer capture and synchronized acquisition with the WV4 board. Clock selection is managed via JP7, choosing between onboard Y2 crystal (16 MHz) or external BNC J6 input (2.5–5 V_P-P, 50 Ω).

Key Specifications

Availability

ADC128S102EVAL/NOPB is available at Aetrix Electronics and suitable for industrial sensor interface, automated test equipment (ATE), and embedded data acquisition systems requiring stable component supply, traceable evaluation hardware, and documented performance validation paths.

Supply support for ADC128S102EVAL/NOPB 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 acquired National Semiconductor in 2011 and maintains legacy product support, documentation, and design resources for precision analog components including ADCs, references, and evaluation platforms.

The ADC128S102EVAL/NOPB belongs to TI's precision data converter evaluation kit family, engineered specifically to simplify characterization and system integration of the ADC128S102 and its pin-compatible 8-/10-/12-bit siblings (ADC088S102, ADC108S102).

FAQ

What is the primary function of the ADC128S102EVAL/NOPB?

The ADC128S102EVAL/NOPB is a dedicated evaluation board for the ADC128S102 analog-to-digital converter. It provides a fully assembled, tested platform with dual BNC analog inputs, configurable channel routing, SPI interface headers, and clock options to validate dynamic performance (SNR, SINAD, THD) and integrate the ADC128S102 into data acquisition systems without custom PCB development. The board is not a standalone ADC - it hosts and interfaces the ADC128S102 IC.

Does the ADC128S102EVAL/NOPB include the ADC128S102 IC?

Yes, the ADC128S102EVAL/NOPB includes the ADC128S102 IC (U1) mounted in a TSSOP-16 package on the board. The schematic (Figure 3) and Bill of Materials confirm U1 is populated as "ADCxx8Sxx2", and the User's Guide explicitly states the board contains the ADC128S102 for evaluation. No additional IC purchase is required to operate the evaluation functionality.

Can the ADC128S102EVAL/NOPB operate without the WaveVision4 Data Capture Board?

Yes, the ADC128S102EVAL/NOPB supports Stand-Alone Mode using external test equipment. In this mode, users apply analog signals to J2 (INA) or J4 (INB), drive digital signals (CSB, SCLK, DIN) via J3 header per the ADC128S102 datasheet timing, and capture DOUT at J3 or TP15 with a logic analyzer. No WV4 board or PC software is required for basic functional verification.

What power supplies does the ADC128S102EVAL/NOPB require?

The ADC128S102EVAL/NOPB requires three distinct supply domains: VA (analog supply/reference, 2.7–5.25 V), VD (digital I/O supply, 2.7 V to VA), and 3.3 V (for on-board EEPROM U2). VA is supplied via J5 (5P5V_REMOTE) or TP10; VD can be tied to VA via JP9 or driven independently; 3.3 V is generated locally when JP8 pins 1&2 are shorted. All supplies are decoupled with ceramic capacitors per layout guidelines.

Is the ADC128S102EVAL/NOPB RoHS-compliant and lead-free?

Yes, the /NOPB suffix in ADC128S102EVAL/NOPB indicates "No Lead (Pb)-Free" - confirming the board and all populated components meet RoHS Directive 2011/65/EU requirements. This includes the ADC128S102 IC (which carries /NOPB), passive components, connectors, and PCB finish, as verified by TI's official product change notices and packaging documentation.