Texas Instruments ADC101C02XEB/NOPB

Overview

ADC101C02XEB/NOPB from Texas Instruments (formerly National Semiconductor) is an evaluation board designed to accelerate development and validation of the ADC101C021 - a 10-bit, I²C-compatible analog-to-digital converter with programmable alert output, 188.9 kSPS sampling rate, and internal reference architecture. It supports standalone logic analyzer testing or computer-based characterization via WaveVision 4 software and WV4 data capture hardware.

For engineers reviewing the ADC101C02XEB/NOPB datasheet, ADC101C02XEB/NOPB pinout, ADC101C02XEB/NOPB application, or ADC101C02XEB/NOPB equivalent, this board enables rapid functional verification, register-level control, dynamic performance analysis (SNR, THD, ENOB), and alert threshold calibration for precision sensor interface designs.

Technical Context

The ADC101C02XEB/NOPB implements a complete signal chain around the ADC101C021 IC, including selectable analog input paths (direct, AC-coupled, or buffered via LMP7731 op-amp), multiple VA supply options (2.7–5.5 V), and configurable I²C pull-ups (100 kHz / 400 kHz / 3.4 MHz). The board integrates LM4050-4.1 shunt reference and supports automatic conversion mode with programmable cycle time.

It provides dual operational modes: Stand Alone (I²C bus driven by external logic analyzer) and Computer Mode (interfaced via J1 WV4S connector to WaveVision 4 Data Capture Board). Jumpers JP1–JP7 enable flexible configuration of input path, reference source, pull-up power, and VA selection without soldering.

Key Specifications

Availability

ADC101C02XEB/NOPB is available at Aetrix Electronics and suitable for precision sensor interface validation, industrial data acquisition system prototyping, and embedded ADC firmware development requiring stable component supply and full-feature evaluation capability.

Supply support for ADC101C02XEB/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 full technical and supply-chain continuity for legacy evaluation platforms like ADC101C02XEB/NOPB.

This board belongs to TI's precision analog evaluation kit family, engineered specifically to de-risk design-in of the ADC101C021 series in applications demanding low-noise, alert-enabled, I²C-synchronized data acquisition.

FAQ

What is the primary function of the ADC101C02XEB/NOPB evaluation board?

The ADC101C02XEB/NOPB evaluation board is a dedicated hardware platform for evaluating the ADC101C021 - a 10-bit, I²C-compatible analog-to-digital converter. It provides immediate access to all key features including alert output, register configuration, automatic conversion mode, and dynamic performance measurement via WaveVision 4 software. The board is pre-configured with the ALERT-option ADC101C021 and supports both standalone and computer-connected test workflows.

Does ADC101C02XEB/NOPB support AC-coupled analog inputs?

Yes, ADC101C02XEB/NOPB supports AC-coupled analog inputs through user-modifiable hardware: install 4.99 kΩ resistors at R1 and R4, replace C1 with a 1.0 µF capacitor, and optionally add a 51 Ω termination resistor at R3 for 50 Ω sources. This configuration enables high-fidelity dynamic testing of AC signals while maintaining DC bias integrity - critical for validating THD and SFDR performance of the ADC101C021.

How is the I²C address configured on ADC101C02XEB/NOPB?

The ADC101C02XEB/NOPB ships populated with the ADC101C021 variant, which has a fixed I²C slave address of 0x54. This address is hardwired and cannot be changed on-board. For evaluation of the address-selectable ADC101C027 variant (0x50/0x51/0x52), users must order separate samples from TI and manually replace U3 - the board itself does not provide on-board ADDR pin routing or jumper-based address selection for ADC101C027.

Can ADC101C02XEB/NOPB operate without the WaveVision 4 system?

Yes, ADC101C02XEB/NOPB operates in Stand Alone mode using external I²C test equipment such as a logic analyzer with pattern generator. SCL and SDA signals are accessible at VIA1 and VIA2 or via J1 pins 1 and 5. Pull-up resistors are enabled via JP2, and power is applied to TP7. This mode allows full register read/write, alert monitoring at VIA5, and conversion result capture - independent of WaveVision 4 or any PC connection.

What reference voltage options does ADC101C02XEB/NOPB provide for the ADC101C021?

ADC101C02XEB/NOPB offers three VA reference options via JP5: (1) 3.3 V regulated supply from the WV4 board (pins 1–2), (2) 5.0 V supply from the WV4 board (pins 3–4), or (3) external supply at TP7 (pins 9–10). Additionally, JP7 enables the onboard LM4050-4.1 shunt reference (4.1 V) - recommended by TI for optimal ADC101C021 accuracy due to its low noise and tight initial tolerance.