Analog Devices Inc. EVAL-AD7192EBZ

Overview

EVAL-AD7192EBZ from Analog Devices is an evaluation board designed specifically for the AD7192 4.8 kHz ultralow noise 24-bit sigma-delta ADC with integrated PGA. It supports standalone battery-powered operation with LCD display, USB-connected PC software control, and flexible analog/digital interface options including SMB connectors for AIN1/AIN2, REFIN2±, and MCLK. It enables full characterization of noise performance, gain calibration, and weigh-scale demonstration using a 6-wire load cell.

For engineers reviewing the EVAL-AD7192EBZ datasheet, EVAL-AD7192EBZ pinout, EVAL-AD7192EBZ application, or EVAL-AD7192EBZ equivalent, this page delivers verified hardware configuration details, supported power modes (USB, 9 V battery, external DC), analog input routing options, reference source selection (ADR421 or AVDD-derived), and integration pathways - including microcontroller interfacing via Header J2 and sensor PCB coupling via digital section isolation.

Technical Context

The EVAL-AD7192EBZ implements a complete analog front-end test platform centered on the AD7192's dual differential/pseudo-differential input architecture, low-noise instrumentation amplifier, reference detect circuitry, and low-side power switch. Its hardware supports both precision DC measurement (e.g., weigh-scale demo at 4.69 Hz ODR, gain = 128) and high-resolution AC analysis (e.g., low-noise quick test at 4.7 Hz, gain = 128, 100-sample RMS calculation).

Digital control is handled by a Cypress CY7C68013A-56LFXC USB microcontroller, enabling real-time register access, configuration scripting, and data logging. The board integrates two Analog Devices voltage regulators (ADP3303-5 and ADP3303-3.3) and an ADR421 2.5 V reference to ensure stable analog supply and reference integrity across all operating modes.

Key Specifications

Availability

EVAL-AD7192EBZ is available at Aetrix Electronics and suitable for precision sensor evaluation, industrial weigh-scale prototyping, and low-frequency analog front-end validation requiring stable component supply, traceable sourcing, and long-term lifecycle support.

Supply support for EVAL-AD7192EBZ 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) ICs, headquartered in Norwood, MA.

The EVAL-AD7192EBZ belongs to Analog Devices' precision data acquisition evaluation platform family, engineered to accelerate development of high-accuracy, low-noise measurement systems for industrial process control, scientific instrumentation, and weigh-scale applications.

FAQ

What is the primary function of the EVAL-AD7192EBZ?

The EVAL-AD7192EBZ is a dedicated evaluation board for the AD7192 24-bit sigma-delta ADC. It provides hardware and software tools to fully assess the device's ultralow noise performance, programmable gain amplifier behavior, reference detection capability, and low-side power switch functionality - enabling rapid validation of sensor signal chains before final system integration.

Can the EVAL-AD7192EBZ operate without a PC connection?

Yes, the EVAL-AD7192EBZ supports true standalone operation using a 9 V battery or external 9 V DC supply. In this mode, it runs the built-in weigh-scale demonstration firmware, displaying real-time weight measurements on its LCD screen and allowing calibration via four tactile buttons - no PC or USB connection required.

How does the EVAL-AD7192EBZ interface with external microcontrollers?

The EVAL-AD7192EBZ uses Header J2 to isolate the AD7192 from its onboard Cypress USB microcontroller. Removing the links on J2 disconnects the AD7192's SPI interface from the evaluation board's internal MCU, exposing the AD7192's SCLK, DIN, DOUT, and CS pins for direct connection to an external host processor or FPGA.

What reference options are supported on the EVAL-AD7192EBZ?

The EVAL-AD7192EBZ supports three reference configurations: (1) the onboard ADR421 2.5 V precision reference, (2) an external reference applied via REFIN2± SMB connectors, and (3) AVDD used as reference in noise test mode (via Header J3 resistor network). All options are selectable through software register settings and hardware link positioning.

Does the EVAL-AD7192EBZ support load cell interfacing?

Yes, the EVAL-AD7192EBZ includes Header J4 - a dedicated 8-pin connector wired to AIN3/AIN4, REFIN1±, AVDD, and GND - specifically for connecting 4-wire or 6-wire load cells. The onboard firmware includes a calibrated weigh-scale demo that configures the AD7192 for 4.69 Hz output data rate, gain = 128, and displays results in grams or kilograms on the LCD.