Texas Instruments ADC10221EVAL

Overview

ADC10221EVAL from Texas Instruments is an obsolete evaluation board designed to demonstrate the ADC10221 - a 10-bit, 15 MSPS (guaranteed), 98 mW CMOS analog-to-digital converter with internal sample-and-hold, single +5V operation, and TTL/CMOS or 3V-compatible digital I/O. It supports video digitization, CCD imaging, and medical scanning applications requiring high-speed, low-power sampling.

For engineers reviewing the ADC10221EVAL datasheet, ADC10221EVAL pinout, ADC10221EVAL application, or ADC10221EVAL equivalent, this page provides verified technical context, key specifications, supply support, manufacturer background, and design-critical FAQs - all grounded in TI's official SNAS039E documentation and evaluation board implementation guidelines.

Technical Context

The ADC10221EVAL implements the ADC10221 IC in a 32-pin TQFP package, enabling full characterization of its two-stage pipeline architecture, which delivers 9.2 ENOB at 10 MHz input with 20 MHz clock. Its reference force/sense interface (VREF+ F/S, VREF− F/S) supports precision external buffering for optimal DC accuracy and linearity.

Board-level features include dedicated analog/digital ground separation, multi-tier power bypassing (10 µF + 0.1 µF per supply rail), and configurable OE/PD control for standby mode (<4 mW) and tri-state output management - directly reflecting the IC's industrial temperature range (−40°C to +85°C) and 5V/3V dual-domain I/O capability.

Key Specifications

Availability

ADC10221EVAL is available at Aetrix Electronics and suitable for digital video acquisition, document scanner development, medical imaging prototyping, and electro-optics system validation requiring stable component supply during legacy design maintenance.

Supply support for ADC10221EVAL 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 leader specializing in analog, embedded processing, and high-performance data conversion technologies, with over 90 years of innovation in signal chain and power management solutions.

The ADC10221 product line was engineered for high-speed imaging and video digitization systems demanding low-power, single-supply operation and guaranteed no-missing-codes performance across industrial temperatures.

FAQ

What is the primary function of the ADC10221EVAL evaluation board?

The ADC10221EVAL evaluation board is a hardware platform designed exclusively to evaluate the ADC10221 analog-to-digital converter. It provides accessible test points, proper power sequencing, reference biasing circuitry, and digital I/O headers to validate timing, dynamic performance (ENOB, SINAD), and interface behavior under real-world conditions - not as a production-ready subsystem.

Does ADC10221EVAL support 3V logic interfacing with the ADC10221 IC?

Yes, ADC10221EVAL supports 3V logic interfacing through dedicated VD I/O supply pins (pins 12 and 21), which accept 2.7–5.5V. When powered at 3V, the ADC10221 outputs become 3V-compatible, eliminating need for external level shifters - a feature explicitly implemented on the ADC10221EVAL board per TI's SNAS039E design recommendations.

Can ADC10221EVAL be used to verify reference voltage accuracy and linearity?

Yes, ADC10221EVAL includes provision for external reference buffering using the VREF+ F/S and VREF− F/S pins. The board allows connection of op-amps like LMC6082 to force precise voltages at the top and bottom of the internal reference ladder - enabling verification of INL (±1.0 LSB max) and DNL (±0.85 LSB max) as specified in the ADC10221 datasheet.

What thermal and layout considerations are validated by ADC10221EVAL?

ADC10221EVAL validates critical layout practices including separate AGND/DGND routing tied near the ADC10221 package, multi-capacitor bypassing (10 µF + 0.1 µF per VA/VD/VD I/O rail), and analog/digital supply isolation - all essential to achieve the ADC10221's rated 9.2 ENOB and −66 dB THD at 10 MHz input, per SNAS039E test conditions.

Is ADC10221EVAL still recommended for new designs?

No - ADC10221EVAL is obsolete per TI's official documentation (SNAS039E, March 2013 revision). While functional for legacy system repair or characterization, it is not recommended for new designs. Engineers should consult TI's current high-speed ADC portfolio (e.g., ADSx series) and corresponding active evaluation modules for supported alternatives.