Analog Devices Inc. EVAL-AD7322CBZ

Overview

EVAL-AD7322CBZ from Analog Devices is a dedicated evaluation board for the AD7322 2-channel, software-selectable, bipolar-input 13-bit analog-to-digital converter (ADC), supporting up to 1 MSPS throughput and ±12 V analog input ranges. It integrates on-board AD780 precision voltage reference (2.5 V/3 V selectable) and AD797 low-noise op amps for analog signal conditioning, and connects via a 96-way edge connector to the EVAL-CONTROL BRD2 controller board for full PC-based control and data analysis.

For engineers reviewing the EVAL-AD7322CBZ datasheet, EVAL-AD7322CBZ pinout, EVAL-AD7322CBZ application, or EVAL-AD7322CBZ equivalent, this board enables rapid functional validation, AC/DC performance characterization (SNR, THD, INL/DNL), and interface timing verification of the AD7322 in both single-ended and differential modes - with configurable power, clock, and reference routing via onboard jumpers.

Technical Context

The EVAL-AD7322CBZ implements a complete signal chain for the AD7322 ADC, including buffered analog inputs (VIN0/VIN1), programmable reference selection (AD780 REFIN), and serial SPI-compatible digital interface (CS, SCLK, DIN, DOUT). It supports dual-supply operation (±12 V for analog front-end, +2.7 V to +5.25 V for core logic) and provides flexible sourcing options for all critical signals via 24 configurable jumpers (LK1–LK27).

Hardware design centers on noise-sensitive analog integrity: decoupling uses 10 μF tantalum + 0.1 μF ceramic capacitors at all supply entry points and IC pins; AGND/DGND planes are separated and joined at a single point; and SMB connectors (J4–J9) enable external signal injection while maintaining controlled impedance paths. The board operates either standalone or as part of the EVAL-CONTROL BRD2 ecosystem.

Key Specifications

Availability

EVAL-AD7322CBZ is available at Aetrix Electronics and suitable for high-voltage data acquisition, precision instrumentation prototyping, and ADC interface validation requiring stable component supply, traceable RoHS-compliant sourcing, and long-term evaluation platform continuity.

Supply support for EVAL-AD7322CBZ 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 (DSP) technologies, headquartered in Norwood, MA, with over 50 years of innovation in precision data conversion and signal conditioning.

The EVAL-AD7322CBZ belongs to Analog Devices' comprehensive evaluation board portfolio designed specifically to accelerate development for precision ADCs - enabling engineers to validate performance, verify system integration, and reduce time-to-market for measurement, test, and control applications.

FAQ

What is the primary function of the EVAL-AD7322CBZ?

The EVAL-AD7322CBZ is a dedicated evaluation platform for the AD7322 13-bit, 2-channel, software-selectable bipolar ADC. It provides full hardware and software support-including on-board AD780 reference, AD797 op amps, jumper-configurable power/clock/reference routing, and PC-based control via EVAL-CONTROL BRD2-to validate electrical performance, timing behavior, and interface compatibility of the AD7322 in real-world signal chains. The EVAL-AD7322CBZ itself is not a production component but an engineering validation tool.

Does the EVAL-AD7322CBZ support both single-ended and differential input configurations?

Yes, the EVAL-AD7322CBZ fully supports both single-ended and differential input modes for the AD7322. Configuration is performed via software control bits (Mode1/Mode0/ADD0) through the included PC software, and hardware jumpers (e.g., LK27) ensure proper op amp biasing for each mode. Table 6 in the board documentation explicitly defines VIN0/VIN1 mapping for all four combinations, and the board's analog input circuitry (U4/U5 AD797 buffers) is optimized for low-noise operation in both configurations. This capability is integral to the EVAL-AD7322CBZ design.

Can the EVAL-AD7322CBZ operate without the EVAL-CONTROL BRD2?

Yes, the EVAL-AD7322CBZ can operate in standalone mode. When disconnected from the EVAL-CONTROL BRD2, external power supplies must be applied: +2.7 V to +5.5 V to EXT_VDD, ±12 V to respective terminals, and proper grounding via AGND/DGND. All control signals (CS, SCLK, DIN, DOUT) and reference inputs must then be driven externally via SMB connectors (J4–J8). Jumper settings (e.g., LK3, LK4, LK5, LK6, LK7, LK8) must be reconfigured accordingly - as detailed in Table 2 - to route signals correctly. The EVAL-AD7322CBZ retains full AD7322 functionality in this mode.

What software is provided with the EVAL-AD7322CBZ, and what does it do?

The EVAL-AD7322CBZ ships with PC-based evaluation software on CD-ROM that communicates exclusively with the EVAL-CONTROL BRD2 to control the AD7322. It provides a graphical user interface with oscilloscope-style time-domain display, FFT spectral analysis, histogram view, and statistical metrics (Min/Max, Std. Dev, Mean). Users configure sampling frequency (up to 1 MSPS), sample count, input mode, and power settings via editable *.cfg files (e.g., AD7322.cfg). The software loads DSP firmware onto the EVAL-CONTROL BRD2 and manages all low-level register writes and data acquisition - making the EVAL-AD7322CBZ immediately usable for performance characterization.

Is the EVAL-AD7322CBZ RoHS compliant?

Yes, the EVAL-AD7322CBZ is RoHS compliant, as indicated by the "Z" suffix in its orderable part number (EVAL-AD7322CBZ). This designation confirms compliance with Directive 2011/65/EU and subsequent amendments, including restrictions on lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE. Component-level RoHS status is maintained across all bill-of-materials items, including the AD7322BRUZ, AD780ARZ, AD797, and passive elements - verified per Analog Devices' official product change notices and material declarations for the EVAL-AD7322CBZ revision 0 design.