Texas Instruments ADC10321EVAL

Overview

ADC10321EVAL from Texas Instruments is an evaluation board for the ADC10321 10-bit, 20 MSPS analog-to-digital converter with internal sample-and-hold, single +5V operation, and 3V-compatible digital I/O. It supports real-time validation of ENOB (9.2 bits @10 MHz), DNL (±0.35 LSB), PSRR (56 dB), and low-power standby mode (<4 mW) in video digitization and CCD imaging signal chains.

For engineers reviewing the ADC10321EVAL datasheet, ADC10321EVAL pinout, ADC10321EVAL application, or ADC10321EVAL equivalent, this board enables functional verification of timing-critical parameters including 2-clock-cycle latency, aperture jitter (<30 ps), and overrange recovery time (1 conversion), alongside interface robustness under mixed 3V/5V supply conditions and industrial temperature range (−40°C to +85°C) operation.

Technical Context

The ADC10321EVAL implements a dedicated test platform for the ADC10321's two-stage pipeline architecture, supporting full-speed evaluation at up to 25 MSPS clock rates while preserving signal integrity via optimized analog input routing, separate AGND/DGND partitioning, and force-sense reference voltage buffering circuitry. It exposes all critical control signals-CLK, PD, OE-and provides access to VREF+ F/S and VREF− F/S pins for precision external reference calibration.

Designed for direct connection to oscilloscopes, logic analyzers, and function generators, the board includes on-board bypassing (10 µF + 0.1 µF per supply rail), impedance-matched 50 Ω input path for VIN, and configurable VD I/O jumpers to validate 3V or 5V digital output compatibility without PCB modification.

Key Specifications

Availability

ADC10321EVAL is available at Aetrix Electronics and suitable for digital video acquisition, medical imaging front-ends, and electro-optics signal conditioning requiring stable component supply and rapid prototyping capability.

Supply support for ADC10321EVAL 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 delivering analog, embedded processing, and high-performance silicon solutions for industrial, automotive, and communications markets.

The ADC10321EVAL belongs to TI's high-speed data converter evaluation platform family, designed specifically to accelerate design-in of precision, low-power ADCs in imaging, video, and instrumentation applications where timing fidelity and reference accuracy are critical.

FAQ

What is the primary purpose of the ADC10321EVAL evaluation board?

The ADC10321EVAL evaluation board is a dedicated hardware platform for functional and performance validation of the ADC10321 10-bit, 20 MSPS analog-to-digital converter. It enables engineers to verify key specifications-including ENOB (9.2 bits @10 MHz), DNL (±0.35 LSB), conversion latency (2 clock cycles), and reference force-sense behavior-under real-world signal conditions before integration into final systems. The board is not a production-ready module but a design-assist tool for the ADC10321.

Does ADC10321EVAL support both 3V and 5V digital I/O levels for the ADC10321?

Yes, ADC10321EVAL supports both 3V and 5V digital I/O operation for the ADC10321 via on-board jumpers that configure the VD I/O supply rail. This allows direct validation of the ADC10321's TTL/CMOS or 3V logic compatibility as specified in its datasheet, ensuring correct interfacing with host FPGAs or processors operating at either voltage level without external level-shifting circuitry.

Can ADC10321EVAL be used to evaluate the ADC10321's power-down mode and standby current?

Yes, ADC10321EVAL provides direct access to the PD (Power Down) pin and includes test points for measuring quiescent current. When PD is asserted high, the ADC10321 enters low-power standby mode consuming <4 mW (typ), and the board's layout preserves accurate current measurement paths-enabling validation of the ADC10321's wake-up time (700 ns) and standby power behavior across the full −40°C to +85°C temperature range.

How does ADC10321EVAL handle reference voltage accuracy and thermal drift mitigation?

ADC10321EVAL implements full force-sense reference interface support for the ADC10321, exposing VREF+ F/S and VREF− F/S pins to enable external op-amp feedback circuits (e.g., LMC6082-based) that actively regulate reference ladder voltages. This architecture compensates for IR drops and thermal drift, allowing users to achieve <0.1% reference stability-directly validating the ADC10321's specified PSRR (56 dB) and INL (±0.45 LSB) under varying load and temperature conditions.

Is the ADC10321EVAL compatible with standard lab equipment such as oscilloscopes and signal generators?

Yes, ADC10321EVAL features an SMA-connected, 50 Ω matched analog input path and buffered digital output headers compatible with logic analyzers and oscilloscopes. Its CLK, OE, and PD signals are accessible via test points or headers, and the board includes on-board termination options and clean power distribution-ensuring reliable synchronization and signal integrity when driven by standard lab instruments during ADC10321 performance characterization.