HDC1100-05

Encoders, Decoders, Converters Overview

The HDC1100-05 is a digital relative humidity and temperature sensor manufactured by SMSC. It integrates capacitive sensing elements for humidity and a bandgap sensor for temperature on a single CMOS IC. The device operates within a voltage range of 2.7 V to 3.6 V. It provides an integrated 14-bit ADC for both measurements. The humidity accuracy is specified at ±3% RH, while the temperature accuracy is ±0.4°C. The unit supports I2C communication with selectable addresses.

Encoders, Decoders, Converters Feature Summary

• Integrated capacitive humidity sensor with high long-term stability
• On-chip bandgap temperature sensor with calibrated output
• Built-in 14-bit analog-to-digital converter for direct digital readout
• Low power consumption suitable for battery-operated applications

Encoders, Decoders, Converters Applications

• HVAC systems requiring precise environmental monitoring
• Consumer electronics such as smartphones and wearables
• Industrial data loggers for climate control
• Smart home devices and IoT sensors

Encoders, Decoders, Converters Procurement Notes

Verify the specific suffix '05' against official SMSC documentation to confirm pinout or packaging variations. Ensure compatibility with 3.3V logic levels in the target system design. Check for RoHS compliance status if required by local regulations. Confirm availability through authorized distributors only to avoid counterfeit components.

Encoders, Decoders, Converters Selection Notes

Select this component when high accuracy and low power are critical. Compare with the HDC1000 if external heating elements are not needed. Consider the operating temperature range and humidity limits for the specific environment. Verify I2C address configuration requirements for multi-sensor setups.

Encoders, Decoders, Converters Part Context

The HDC1100 series belongs to SMSC's family of digital humidity and temperature sensors. It differs from earlier models by integrating the ADC internally, simplifying the interface. The device is designed for applications requiring reliable performance in compact form factors. It complements other environmental sensing solutions in the manufacturer's portfolio.

Encoders, Decoders, Converters Replacement Considerations

Check for direct replacements like the HDC1080 or HDC2010 from Texas Instruments, which acquired SMSC. Verify pin compatibility and register mapping before substitution. Ensure that the replacement part meets the same accuracy and power specifications.