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AST Humidity Sensor, HTU20D(F)

HTU20D(F) Humidity Sensor

Brand: American Sensor Technologies Inc
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AST Humidity Sensor, HTU20D(F)
HTU20D(F), is a new digital humidity sensor with temperature output of MEAS.

Setting new standards in terms of size and intelligence, it is embedded in a reflow solderable Dual Flat No leads (DFN) package with a small 3 x 3 x 0.9 mm foot print. This sensor provides calibrated, linearized signals in digital, I²C format. 

HTU20D(F) digital humidity sensors are dedicated humidity and temperature plug and play transducers for OEM applications where reliable and accurate measurements are needed. Direct interface with a micro-controller is made possible with the module for humidity and temperature digital outputs. 

These low power sensor are designed for high volume and cost sensitive applications with tight space constraints.
Features
  • Full Interchangeability with No Calibration Required in Standard Conditions
  • Instantaneous Desaturation After Long Periods in Saturation Phase
  • Compatible with Automatized Assembly Processes, Including Pb Free and Reflow Processes
  • Individual Marking for Compliance to Stringent Traceability Requirements

1 - 8 of 8 Part Numbers
HTU20D/A
HTU20D/A
  • Accuracy - ± 5% RH Maximum Tolerance at 55% RH
  • Output - Digital, I²C Protocol
  • Filter - Without Embedded PTFE Filter / Membrane
HTU20D/A(F)
HTU20D/A(F)
  • Accuracy - ± 5% RH Maximum Tolerance at 55% RH
  • Output - Digital, I²C Protocol
  • Filter - With Embedded PTFE Filter/Membrane
HTU20P
HTU20P
  • Accuracy - ± 5% RH Maximum Tolerance at 55% RH
  • Output - PWM Interface, Analog Output
  • Filter - Without Embedded PTFE Filter / Membrane
HTU20P(F)
HTU20P(F)
  • Accuracy - ± 5% RH Maximum Tolerance at 55% RH
  • Output - PWM Interface, Analog Output
  • Filter - With Embedded PTFE Filter/Membrane
HTU21D/A
HTU21D/A
  • Accuracy - ± 3% RH Maximum Tolerance at 55% RH
  • Output - Digital, I²C Protocol
  • Filter - Without Embedded PTFE Filter / Membrane
HTU21D/A(F)
HTU21D/A(F)
  • Accuracy - ± 3% RH Maximum Tolerance at 55% RH
  • Output - Digital, I²C Protocol
  • Filter - With Embedded PTFE Filter/Membrane
HTU21P
HTU21P
  • Accuracy - ± 3% RH Maximum Tolerance at 55% RH
  • Output - PWM Interface, Analog Output
  • Filter - Without Embedded PTFE Filter / Membrane
HTU21P(F)
HTU21P(F)
  • Accuracy - ± 3% RH Maximum Tolerance at 55% RH
  • Output - PWM Interface, Analog Output
  • Filter - With Embedded PTFE Filter/Membrane
1 - 8 of 8 Part Numbers

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Specifications

Brand

Accuracy

  • ± 0.3° C (± 0.54° F) - Temperature Accuracy at 25° C (77° F)
  • ± 3 % Relative Humidity Typical - Relative Humidity Accuracy at 25° C (77° F) (20 to 80 % Relative Humidity)

Approvals & Certifications

  • RoHS

Communication

  • Digital 2-Wire Interface
  • I²C Protocol

Current

  • -10 to 10 mA - Input Current on Any Pin
  • 300-500 µA - (450 µA Typical) Measuring, Vdd = 3 V, SCK= 400 kHz at 25° C (77° F) - Current Consumption
  • Sleep Mode: 0.02 µA Typical, Vdd = 3 V, SCK= 400 kHz at 25° C (77° F) - Current Consumption
  • Sleep Mode: 0.14 µA, Max.

Dissipation

  • 0.06 µW Typical - Sleep Mode
  • 0.5 µW, Max.
  • 2.7 µW Typical - Average 8-bit, Vdd = 3 V, SCK= 400 kHz, Temp< 60° C (140° F), Duty Cycle < 10 %

Environmental Protection

  • IP67

Frequency

  • 0 to 0.4 MHz - SCK Frequency

Humidity

  • 0 to 100 % Relative Humidity

Hysteresis

  • ± 1 % Relative Humidity Typical - Humidity Hysteresis

Load

  • 0 to 500 PF - Capacitive Load on Bus Line

Measuring Time

  • Relative Humidity: 14 milliseconds Typical, 16 milliseconds, Max.
  • Relative Humidity: 2 milliseconds Typical, 3 milliseconds, Max.
  • Relative Humidity: 4 milliseconds Typical, 5 milliseconds, Max.
  • Relative Humidity: 7 milliseconds Typical, 8 milliseconds, Max.
  • Temperature: 11 milliseconds Typical, 13 milliseconds, Max.
  • Temperature: 22 milliseconds Typical, 25 milliseconds, Max.
  • Temperature: 44 milliseconds Typical, 50 milliseconds, Max.
  • Temperature: 6 milliseconds Typical, 7 milliseconds, Max.

Operating Temperature

  • -40° to 125° C (-40° to 257° F)

Recovery Time

  • 0.6 µs Min. - SCK High Time
  • 1.3 µs Min. - SCK Low Time
  • 100 Nanoseconds Min. - DATA Set-Up Time
  • 100 Nanoseconds, Max.
  • 300 Nanoseconds, Max.
  • 400 Nanoseconds, Max.
  • 900 Nanoseconds, Max.
  • Relative Humidity: 10 seconds Typical after 150 Hours of Condensation

Resolution

  • 0.01° C Typical - for 14-bit
  • 0.04 % Relative Humidity Typical - for 12-bit
  • 0.04° C Typical - for 12-bit
  • 0.7 % Relative Humidity Typical - for 8-bit

Response Time

  • Relative Humidity: 5 seconds Typical, 10 seconds, Max.
  • Temperature: 10 seconds Typical (At 63 % of Signal) from 15° to 45° C (59° to 113° F) at 1 m/sec Air Flow

Storage Temperature

  • -40° to 125° C (-40° to 257° F)

Supply Voltage

  • -0.3 to 3.6 V - Vdd to GND
  • -0.3 to Vdd +0.3 V - Digital I/O Pins (DATA/SCK) to Vdd
  • 0 to 0.4 V - Low Level Output Voltage
  • 1.5-3.6 V
  • 3 V - Typical
  • 3.8 Vdc - Peak
  • 70 % Vdd - High Level Output Voltage, High Level Input Voltage

Temperature Effect

  • -0.15 % Relative Humidity/°C - Temperature Coefficient from 0° to 80° C (32° to 176° F)

Thermal Drift

  • 0.04° C/Year - Long Term Drift
  • 0.5 % Relative Humidity/Year - Long Term Drift

  • Home Appliance
  • Humidifier
  • Medical
  • Multimedia - Smartphone & Tablet
  • Printers

Documentation

Data Sheets

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