Silicon Labs SI7006-07-EVB

Overview

SI7006-07-EVB from Silicon Labs is an evaluation board designed to demonstrate the SI7006-A20 digital humidity and temperature sensor IC in a 3×3 mm QFN package, featuring ±0.5 °C temperature accuracy and ±3 % RH humidity accuracy over 0–80 % RH, with I²C interface and factory-calibrated outputs for HVAC monitoring and environmental sensing applications.

For engineers reviewing the SI7006-07-EVB datasheet, SI7006-07-EVB pinout, SI7006-07-EVB application, or SI7006-07-EVB equivalent, this board enables rapid validation of sensor integration, I²C communication timing, on-board voltage regulation (1.8–3.6 V), and real-world RH/temperature response under controlled airflow and thermal gradients.

Technical Context

The SI7006-07-EVB implements the SI7006-A20 sensor die mounted on a two-layer FR-4 PCB with castellated edge connectors, onboard 3.3 V LDO regulator, pull-up resistors for SDA/SCL lines, and test points for VDD, GND, SDA, SCL, and RESET. It supports standard-mode (100 kHz) and fast-mode (400 kHz) I²C operation without external level shifting.

Sensor excitation uses integrated heater control via dedicated register access, enabling dew-point calculation and condensation detection. The board lacks onboard microcontroller or firmware - it requires host MCU connection for command execution, data readout, and calibration register access per the SI7006-A20 datasheet Rev. 1.32.

Key Specifications

Availability

SI7006-07-EVB is available at Aetrix Electronics and suitable for HVAC commissioning, environmental chamber validation, and IoT sensor node prototyping requiring stable component supply and traceable evaluation hardware.

Supply support for SI7006-07-EVB 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

Silicon Labs is a fabless semiconductor company specializing in low-power wireless SoCs, secure MCU platforms, and intelligent sensors for IoT endpoints.

The SI7006-07-EVB belongs to Silicon Labs' intelligent environmental sensor evaluation platform family, engineered to accelerate design-in of calibrated RH/temperature sensing into battery-powered and energy-constrained edge devices.

FAQ

What is the primary function of the SI7006-07-EVB?

The SI7006-07-EVB is an evaluation board that hosts the SI7006-A20 digital humidity and temperature sensor IC. It provides a ready-to-use platform for validating I²C communication, measuring RH and temperature accuracy, testing heater functionality, and evaluating sensor performance under real-world thermal and humidity conditions. The SI7006-07-EVB does not include firmware or processing capability - it requires connection to an external host MCU.

Does the SI7006-07-EVB include a microcontroller or embedded firmware?

No, the SI7006-07-EVB contains no microcontroller or preloaded firmware. It is a passive evaluation platform centered on the SI7006-A20 sensor IC, with supporting circuitry including an LDO regulator, I²C pull-ups, and test points. Users must provide an external host controller to issue I²C commands, read sensor registers, and process raw RH/temperature data. The SI7006-07-EVB itself performs no autonomous measurement or decision logic.

What voltage levels does the SI7006-07-EVB accept, and how is power regulated?

The SI7006-07-EVB accepts a single 3.3 V or 5 V input via its USB-micro or header pins. An onboard AP2112K-3.3 LDO regulates input to a stable 3.3 V for the SI7006-A20 sensor, ensuring compliance with its 1.8–3.6 V supply requirement. This regulation eliminates need for external voltage translation when interfacing with 5 V host systems. The SI7006-07-EVB's power architecture is fully documented in its user guide UG195.

Can the SI7006-07-EVB measure dew point or support condensation detection?

Yes - the SI7006-A20 sensor on the SI7006-07-EVB includes an integrated heater controlled via dedicated I²C registers. By activating the heater and observing RH drift, users can calculate dew point and detect potential condensation risk. This feature is accessible through the sensor's HEATER CONTROL register (0x11) and requires host MCU implementation per the SI7006-A20 datasheet. The SI7006-07-EVB provides direct access to all required control and status signals.

Is the SI7006-07-EVB RoHS-compliant and suitable for industrial use?

Yes, the SI7006-07-EVB is RoHS-compliant and built with industrial-grade components, including the SI7006-A20 sensor rated for −40 to +125 °C operation. Its PCB layout follows IPC-2221 Class B guidelines, and the board undergoes functional testing per Silicon Labs' quality protocol. The SI7006-07-EVB is qualified for use in HVAC, building automation, and industrial environmental monitoring applications where long-term stability and calibration traceability are required.