Digilent Pmod HYGRO, Reference Manual, Page: 1 / 6

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Pmod HYGRO Reference Manual
Revised February 22, 2017
This manual applies to the Pmod HYGRO rev. A
DOC#: 510-347
Copyright Digilent, Inc. All rights reserved.
Other product and company names mentioned may be trademarks of their respective owners.
Page 1 of 6
Overview
The Digilent Pmod HYGRO (Revision A) is small relative humidity and temperature sensor. With the TI HDC1080 ,
you can determine the relative humidity of the environment with up to 14 bits of resolution.
1 Functional Description
The Pmod HYGRO is designed to digitally report the relative humidity and ambient temperature upon request by
the host board. Up to 14-bits of resolution for each sensor may be collected by allowing for longer conversion
times. A resistive heating element can be enabled to drive off condensation that accumulates on the sensor after
being exposed at high humidity conditions.
2 Specifications
Parameter Min Typical Max Units
Power Supply Voltage 2.7 3 5.5 V
Serial Clock Frequency 10 400 kHz
The Pmod HYGRO.

Relative humidity accuracy ±2%

Temperature sensor accuracy 0.2 °C

Good stability at high humidity

14-bit measurement resolution

Internal resistive heating element

6-pin Pmod connector with I²C interface

Pass-through Pmod host port for daisy chaining
Features: