Analog Devices Inc. EVAL-ADT7X20EBZ

Overview

EVAL-ADT7X20EBZ from Analog Devices is a USB-powered evaluation platform for the ADT7320 (SPI) and ADT7420 (I²C) ±0.25°C accurate, 16-bit digital temperature sensors. It includes a fully fitted main board with on-board ADT7320UPCZ and ADT7420UPCZ ICs, external measurement board, evaluation software, USB cable, and documentation - enabling rapid characterization of sensor accuracy, alarm thresholds, register configuration, and thermal response in lab or industrial test environments.

For engineers reviewing the EVAL-ADT7X20EBZ datasheet, EVAL-ADT7X20EBZ pinout, EVAL-ADT7X20EBZ application, or EVAL-ADT7X20EBZ equivalent, this kit supports full register-level control via Windows-based GUI, real-time temperature monitoring with logging, dual-board selection (main vs. external), and optional high-temperature remote sensing using flex boards - all without external power supplies.

Technical Context

The EVAL-ADT7X20EBZ comprises two hardware modules: a USB-connected main board hosting CY7C68013-56LFC microcontroller, ADP3303ARZ-3.3 LDO, ADG787BRMZ switch, and both ADT7320UPCZ and ADT7420UPCZ sensors; and a detachable external board with identical sensor pair for remote placement. The system uses 24 MHz crystal timing and supports I²C (ADT7420) and SPI (ADT7320) interfaces independently via software-selectable routing.

Wiring between boards uses color-coded high-temp cables (red/black/white/blue/green/yellow for VCC/GND/SCLK/DOUT/DIN/CS on ADT7320FBZ; red/black/white/blue for VCC/GND/SCL/SDA on ADT7420FBZ), enabling operation beyond USB cable thermal limits - e.g., in oil baths or ovens - while maintaining signal integrity and ESD-safe handling per Analog Devices' design guidelines.

Key Specifications

Availability

EVAL-ADT7X20EBZ is available at Aetrix Electronics and suitable for temperature sensor validation, embedded thermal management prototyping, and industrial calibration workflows requiring stable component supply, traceable sourcing, and long-term evaluation kit continuity.

Supply support for EVAL-ADT7X20EBZ 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) semiconductors, headquartered in Norwood, MA, serving precision instrumentation, industrial automation, and communications markets.

The EVAL-ADT7X20EBZ belongs to Analog Devices' precision temperature sensing evaluation platform family - engineered to accelerate development of high-accuracy thermal monitoring systems in medical, test & measurement, and harsh-environment industrial applications.

FAQ

What is the primary function of the EVAL-ADT7X20EBZ?

The EVAL-ADT7X20EBZ is a dedicated evaluation kit for the ADT7320 and ADT7420 high-accuracy digital temperature sensors. It provides a complete, USB-powered hardware-software system to validate sensor performance - including register configuration, temperature accuracy, alarm behavior, and thermal response - without requiring custom firmware or external power. The EVAL-ADT7X20EBZ includes both sensors pre-mounted on its main board and supports remote measurements via an external board and optional flex boards.

Which temperature sensors does the EVAL-ADT7X20EBZ support, and how are they interfaced?

The EVAL-ADT7X20EBZ supports both the ADT7320 (SPI interface) and ADT7420 (I²C interface), each with ±0.25°C accuracy and 16-bit resolution. The kit's software allows users to select either device and choose whether it resides on the main board or external board. The ADT7320 communicates over SPI using SCLK/DIN/DOUT/CS lines, while the ADT7420 uses I²C with SCL/SDA - routed separately via the ADG787BRMZ switch on the EVAL-ADT7X20EBZ main board.

Does the EVAL-ADT7X20EBZ require an external power supply?

No, the EVAL-ADT7X20EBZ is powered entirely from the host PC's USB port - no external power supply is needed. Its onboard ADP3303ARZ-3.3 low-dropout regulator converts USB 5 V to a clean, stable 3.3 V rail for the sensors, microcontroller, and peripherals. This simplifies setup and ensures consistent biasing during evaluation, as confirmed in UG-138 Rev. B Section "General Description" and "Features".

Can the EVAL-ADT7X20EBZ be used for high-temperature remote sensing?

Yes - the EVAL-ADT7X20EBZ is explicitly designed for remote temperature measurement in elevated-temperature environments. Its external board connects to the main board via color-coded, high-temperature-rated wires (e.g., red/black/white/blue/green/yellow for ADT7320FBZ), allowing placement inside oil baths or ovens where ambient temperatures exceed USB cable ratings. This capability is documented in UG-138 Rev. B "General Description" and "Wiring Guidelines" sections.

What software tools are included with the EVAL-ADT7X20EBZ?

The EVAL-ADT7X20EBZ ships with Windows-compatible evaluation software (CD-ROM) supporting Windows 2000 through Windows 7. It features a three-tab GUI: Configuration Register (for full 8-bit register control), Temperature Monitor (with real-time °C display, alarm indicators, and threshold setting), and ADT7x20 Registers (for direct read/write access). Data logging to Excel or text files is supported, and the software initializes registers to default values (e.g., 0x90 for config) upon launch - as detailed in UG-138 Rev. B Sections 4–7.