Texas Instruments ADC088S022EVAL

Overview

ADC088S022EVAL from National Semiconductor is an evaluation board designed to accelerate prototyping and performance validation of the ADC088S022 - an 8-bit, 8-channel, low-power serial-output CMOS analog-to-digital converter with 800 kHz–3.2 MHz clock support and SPI-compatible interface. It enables rapid characterization of dynamic parameters (SNR, SINAD, THD, SFDR, ENOB) and supports both stand-alone test equipment and computer-based acquisition via National's WaveVision4 software and WV4 Data Capture Board.

For engineers reviewing the ADC088S022EVAL datasheet, ADC088S022EVAL pinout, ADC088S022EVAL application, or ADC088S022EVAL equivalent, this board provides full hardware access to all analog inputs (INA/INB), digital I/O (CSB/SCLK/DIN/DOUT), clock selection (onboard 16 MHz oscillator or external BNC input), supply rails (VA, VD, 3.3V), and jumper-configurable channel routing - enabling precise ADC088S022 functional verification under real-world signal conditions.

Technical Context

The ADC088S022EVAL board interfaces directly with the ADC088S022 IC in TSSOP-16 package, supporting its native SPI serial interface and dual analog input paths (INA and INB). It implements configurable AC/DC coupling, eight-channel multiplexing via DIP switches and jumpers (JP1–JP3, DIP1), and independent analog (VA) and digital (VD) supply control with jumper-selectable VD=VA configuration.

Board-level clocking supports internal crystal oscillator (Y2, 16 MHz) or external 50 Ω square-wave source (2.5–5 V_P-P) via J6, with JP7 selecting source. Power delivery includes local +5.5 V (J5), on-board 3.3 V generation (JP8), and test points for VA, 5P5V, and AGND - all aligned to ADC088S022's 2.7–5.25 V analog supply range and 2.7 V to VA digital supply specification.

Key Specifications

Availability

ADC088S022EVAL is available at Aetrix Electronics and suitable for industrial sensor data acquisition, embedded instrumentation prototyping, and mixed-signal design validation requiring stable component supply and repeatable ADC performance benchmarking.

Supply support for ADC088S022EVAL 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

National Semiconductor was a U.S.-based semiconductor company specializing in analog and mixed-signal ICs, acquired by Texas Instruments in 2011. Its legacy ADC portfolio remains widely used in precision measurement and industrial control systems.

The ADC088S022EVAL belongs to National's family of low-power, multi-channel SAR ADC evaluation kits - designed explicitly to simplify validation of the ADC088S022/ADC108S022/ADC128S022 series in real-world signal chain environments.

FAQ

What is the primary function of the ADC088S022EVAL evaluation board?

The ADC088S022EVAL evaluation board is a dedicated hardware platform for evaluating the ADC088S022 - an 8-bit, 8-channel, low-power serial-output analog-to-digital converter. It provides complete access to all analog inputs (INA/INB), digital interface signals (CSB/SCLK/DIN/DOUT), clock sources (internal oscillator or external BNC), and supply rails (VA, VD, 3.3V), enabling engineers to validate ADC088S022 performance metrics including SNR, SINAD, THD, SFDR, and ENOB using either stand-alone test equipment or National's WaveVision4 software with the WV4 Data Capture Board.

Does the ADC088S022EVAL support other members of the ADCxx8S022 family?

Yes, the ADC088S022EVAL board is physically and electrically compatible with the entire ADCxx8S022 family - including ADC108S022 and ADC128S022 - due to their shared pinout, SPI interface, and supply architecture. However, the board's default configuration, documentation, and WaveVision4 software settings are optimized for the ADC088S022's 8-bit resolution and 800 kHz–3.2 MHz clock range. Performance validation for higher-resolution variants requires manual adjustment of software scaling and timing parameters.

How do I configure the ADC088S022EVAL for stand-alone mode versus computer mode?

In stand-alone mode, power the board via J5 (+5 V), apply analog signals to INA (J2) or INB (J4), set jumpers per Table 1 (e.g., JP7 pins 1&2 for onboard clock), and drive CSB/SCLK/DIN via J3 using external logic generators. In computer mode, connect the WV4 Data Capture Board via J3 ribbon cable, power both boards, run WaveVision4 v4.2+, select "WaveVision 4.0 (USB)", and configure sampling depth (2K–32K). The ADC088S022EVAL automatically routes signals to enable real-time time-domain, FFT, and histogram analysis of ADC088S022 output.

What are the key jumper functions on the ADC088S022EVAL board?

Key jumpers include JP1 (INA coupling: DC/AC/ground), JP3 (INB coupling: DC/AC), JP7 (clock source: onboard Y2 or external J6), JP8 (3.3 V source: local or from WV4 board), and JP9 (VD = VA or independent). DIP1 selects which ADC channels receive INA; JP2 selects channels for INB. These jumpers allow precise control over signal path, reference, clocking, and supply domains - essential for isolating and verifying ADC088S022 behavior under defined test conditions.

Can the ADC088S022EVAL be used without the WaveVision4 software?

Yes, the ADC088S022EVAL operates fully in stand-alone mode without WaveVision4. Engineers can use logic analyzers, oscilloscopes, or custom microcontroller hosts to monitor CSB, SCLK, DIN, and DOUT at J3 or TP15, and capture raw ADC088S022 serial output for offline analysis. The board's schematic (Figure 3), jumper table (Table 2), and functional description (Section 4) provide all necessary electrical and timing information to implement alternative host interfaces - making ADC088S022EVAL suitable for integration into proprietary test systems or firmware development workflows.