Analog Devices Inc. EVAL-AD7274CBZ

Overview

EVAL-AD7274CBZ from Analog Devices is a dedicated evaluation board for the AD7274 12-bit, 3 MSPS successive approximation analog-to-digital converter (ADC), supporting full-speed sampling, on-board analog buffering, dual precision voltage references (+2.5 V/+3 V AD780 and +5 V REF195), and standalone or EVAL-CONTROL-BRD2–controlled operation in high-fidelity data acquisition systems.

For engineers reviewing the EVAL-AD7274CBZ datasheet, EVAL-AD7274CBZ pinout, EVAL-AD7274CBZ application, or EVAL-AD7274CBZ equivalent, this page delivers verified hardware configuration options, software-controlled sampling up to 1 MSPS, link-based reference/VDD/bias-up selection, and interoperability with Analog Devices' standardized 96-way control interface - all critical for rapid ADC characterization and system integration.

Technical Context

The EVAL-AD7274CBZ implements a modular signal chain architecture centered on the AD7274 ADC, with independent analog and digital ground planes (AGND/DGND) connected at a single point near the ADC to minimize noise coupling. It integrates OP467 quad op amps for input buffering, enabling high-impedance signal conditioning before conversion.

Reference selection is configurable via LK4 (AD780, REF195, or external VREF), while bias-up circuitry (VIN → VBIASED) supports bipolar-to-unipolar level shifting using user-selectable dc bias (LK5: VDD/2 or AGND). Power routing is fully link-controlled (LK6/LK7 for ±12 V; LK11 for VDD source), ensuring compatibility with both EVAL-CONTROL-BRD2 and custom test setups.

Key Specifications

Availability

EVAL-AD7274CBZ is available at Aetrix Electronics and suitable for high-speed data acquisition, precision instrumentation, and mixed-signal prototyping requiring stable component supply, traceable evaluation hardware, and manufacturer-supported toolchain continuity.

Supply support for EVAL-AD7274CBZ 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

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with deep expertise in precision data conversion and signal conditioning.

The EVAL-AD7274CBZ belongs to Analog Devices' CB-series evaluation platform family, designed specifically to accelerate validation of SAR ADCs through standardized interfaces, configurable reference/biasing, and integrated PC software for time- and frequency-domain analysis.

FAQ

What is the primary function of the EVAL-AD7274CBZ?

The EVAL-AD7274CBZ is an evaluation board exclusively for the AD7274 12-bit, 3 MSPS SAR ADC. It provides complete hardware infrastructure-including analog buffering, dual precision voltage references, configurable bias-up circuitry, and 96-way EVAL-CONTROL-BRD2 compatibility-to enable rapid characterization, performance testing, and system-level integration of the AD7274. The EVAL-AD7274CBZ does not operate as a standalone data acquisition device but serves as a validated interface between the ADC and host control hardware or PC software.

Does the EVAL-AD7274CBZ support both AD7273 and AD7274 devices?

No - the EVAL-AD7274CBZ is specifically configured and documented for the AD7274 12-bit ADC. While the board shares mechanical and schematic heritage with the EVAL-AD7273CBZ variant, its default configuration (e.g., software files ad7274.cfg, reference selection logic, and calibration settings) targets the AD7274's 12-bit resolution and associated timing parameters. Using it with the AD7273 requires manual reconfiguration and is not supported out-of-box by the provided software or documentation.

How is the reference voltage selected on the EVAL-AD7274CBZ?

Reference voltage selection on the EVAL-AD7274CBZ is controlled by link LK4. Position A routes the AD780 output (+2.5 V or +3 V, set by LK2) to the AD7274's VREF pin; Position B routes the REF195's +5 V output; Position C enables external VREF injection via J10. This hardware-level switching ensures precise, low-noise reference sourcing aligned with the AD7274's specified input range and accuracy requirements - no firmware or software override is required.

Can the EVAL-AD7274CBZ operate without the EVAL-CONTROL-BRD2?

Yes - the EVAL-AD7274CBZ supports standalone operation. Users must supply all required voltages externally: +12 V/−12 V (for references and op amps), EXT_VDD (for AD7274 VDD), EXT_VREF (if not using on-board references), and DGND/AGND. Control signals (CS, SCLK, SDATA) must be driven externally via P12 header pins, and analog inputs applied through J1 (AIN), J2 (VIN), or J3 (VBIASED). Link settings (e.g., LK11, LK12–LK14) must be manually configured to reflect external sourcing.

What software is included with the EVAL-AD7274CBZ and what does it do?

The EVAL-AD7274CBZ ships with PC software that runs on Windows and communicates with the EVAL-CONTROL-BRD2 to control the AD7274. It supports configurable sampling (up to 1 MSPS), real-time waveform display (DSO view), FFT and histogram analysis, binary/raw data export, and power-down mode control (partial or full). Configuration files (e.g., ad7274.cfg) define bit depth, max sampling rate, input range, and power settings - ensuring the software correctly interprets data from the EVAL-AD7274CBZ and AD7274.