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HDC1080

SNAS672A –NOVEMBER 2015–REVISED JANUARY 2016

HDC1080 Low Power, High Accuracy Digital Humidity Sensor with Temperature Sensor

1 Features 3 Description

The HDC1080 is a digital humidity sensor with

• Relative Humidity Accuracy ±2% (typical)

integrated temperature sensor that provides excellent

• Temperature Accuracy ±0.2°C (typical)

measurement accuracy at very low power. The

• Excellent Stability at High Humidity

HDC1080 operates over a wide supply range, and is

a low cost, low power alternative to competitive

• 14 Bit Measurement Resolution

solutions in a wide range of common applications.

• 100 nA Sleep Mode Current

The humidity and temperature sensors are factory

• Average Supply Current:

calibrated.

– 710 nA @ 1sps, 11 bit RH Measurement

Device Information

(1)

– 1.3 µA @ 1sps, 11 bit RH and Temperature

PART

Measurement

PACKAGE BODY SIZE (NOM)

NUMBER

• Supply Voltage 2.7 V to 5.5 V

HDC1080 PWSON (6-pin) DMB 3.00 mm x 3.00 mm

• Small 3 mm x 3 mm Device Footprint

(1) For all available packages, see the orderable addendum at

• I

C Interface

the end of the datasheet.

2 Applications

• HVAC

• Smart Thermostats and Room Monitors

• White Goods

• Printers

• Handheld Meters

• Medical Devices

• Wireless Sensor (TIDA: 00374, 00484, 00524)

4 Typical Application

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Summary of content (30 pages)

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Sample & Buy Product Folder Tools & Software Technical Documents Support & Community Reference Design HDC1080 SNAS672A – NOVEMBER 2015 – REVISED JANUARY 2016 HDC1080 Low Power, High Accuracy Digital Humidity Sensor with Temperature Sensor 1 Features 3 Description • • • • • • The HDC1080 is a digital humidity sensor with integrated temperature sensor that provides excellent measurement accuracy at very low power.
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HDC1080 SNAS672A – NOVEMBER 2015 – REVISED JANUARY 2016 www.ti.com Table of Contents 1 2 3 4 5 6 7 8 Features .................................................................. Applications ........................................................... Description ............................................................. Typical Application ................................................ Revision History..................................................... Pin Configuration and Functions .............
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HDC1080 www.ti.com SNAS672A – NOVEMBER 2015 – REVISED JANUARY 2016 6 Pin Configuration and Functions DMB Package 6 Pin PWSON Top View Top View SDA 1 GND 2 6 SCL 5 VDD 4 NC RH SENSOR NC 3 Pin Functions PIN NAME NO.
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HDC1080 SNAS672A – NOVEMBER 2015 – REVISED JANUARY 2016 www.ti.com 7 Specifications 7.1 Absolute Maximum Ratings (1) Input Voltage Storage Temperature (1) MIN MAX VDD -0.3 6 SCL -0.3 6 SDA -0.3 6 TSTG -65 150 UNIT V °C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.
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HDC1080 www.ti.com SNAS672A – NOVEMBER 2015 – REVISED JANUARY 2016 7.5 Electrical Characteristics (1) The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. TA = 30°C, RH = 40%, and VDD = 3V.
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HDC1080 SNAS672A – NOVEMBER 2015 – REVISED JANUARY 2016 www.ti.com 7.6 I2C Interface Electrical Characteristics At TA=30°C, VDD=3V (unless otherwise noted) PARAMETER TEST CONDITION MIN TYP MAX UNIT I2C INTERFACE VOLTAGE LEVEL VIH Input High Voltage VIL Input Low Voltage VOL Output Low Voltage 0.7xVDD Sink current 3mA (1) HYS Hysteresis CIN Input Capacitance on all digital pins (1) V 0.3xVDD V 0.4 V 0.1xVDD V 0.
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HDC1080 www.ti.com SNAS672A – NOVEMBER 2015 – REVISED JANUARY 2016 7.8 Typical Characteristics Unless otherwise noted. TA = 30°C, VDD = 3V. 10 1 0.9 8 0.8 7 0.7 Accuracy (r°C) RH Accuracy (+/- %RH) Typical Typical 9 6 5 4 0.6 0.5 0.4 3 0.3 2 0.2 1 0.1 0 -40 0 0 10 20 30 40 50 60 RH (%) 70 80 90 100 -10 5 20 35 65 80 95 110 125 D001 Figure 3. Temperature Accuracy vs. Temperature 300 300 T= -20°C T= 25°C T= 40°C T= 85°C T= 125°C 275 Vdd=2.7V Vdd=3V Vdd=3.
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HDC1080 SNAS672A – NOVEMBER 2015 – REVISED JANUARY 2016 www.ti.com Typical Characteristics (continued) Unless otherwise noted. TA = 30°C, VDD = 3V. 1200 1000 1200 T= -20°C T= 25°C T= 40°C T= 85°C T= 125°C 1000 8 800 Idd (nA) Idd (nA) 800 600 600 400 400 200 200 0 2.7 Vdd=2.7V Vdd=3V Vdd=3.3V Vdd=5V 0 3 3.3 3.6 3.9 4.2 4.5 4.8 5 0 25 50 75 100 125 Vdd (V) Temp (°C) Figure 8. Supply Current vs. Supply Voltage, Sleep Mode Figure 9. Supply Current vs.
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HDC1080 www.ti.com SNAS672A – NOVEMBER 2015 – REVISED JANUARY 2016 8 Detailed Description 8.1 Overview The HDC1080 is a digital humidity sensor with integrated temperature sensor that provides excellent measurement accuracy at very low power. The sensing element of the HDC1080 is placed on the top part of the device. Measurement results can be read out through the I2C compatible interface. Resolution is based on the measurement time and can be 8, 11, or 14 bits for humidity; 11 or 14 bits for temperature.
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HDC1080 SNAS672A – NOVEMBER 2015 – REVISED JANUARY 2016 www.ti.com 8.5 Programming 8.5.1 I2C Interface The HDC1080 operates only as a slave device on the I2C bus interface. It is not allowed to have on the I2C bus multiple devices with the same address. Connection to the bus is made via the open-drain I/O lines, SDA, and SCL. The SDA and SCL pins feature integrated spike-suppression filters and Schmitt triggers to minimize the effects of input spikes and bus noise.
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HDC1080 www.ti.
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HDC1080 SNAS672A – NOVEMBER 2015 – REVISED JANUARY 2016 www.ti.com Programming (continued) (c) For a humidity measurement, set the desired humidity measurement resolution: – Set Bit[9:8] to 00 for 14 bit resolution. – Set Bit[9:8] to 01 for 11 bit resolution. – Set Bit[9:8] to 10 for 8 bit resolution. 2. Trigger the measurement by executing a pointer write transaction. Refer to Figure 12 – Set the address pointer to 0x00 for a temperature measurement.
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HDC1080 www.ti.
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HDC1080 SNAS672A – NOVEMBER 2015 – REVISED JANUARY 2016 www.ti.com 8.6 Register Map The HDC1080 contains data registers that hold configuration information, temperature and humidity measurement results, and status information. Table 1.
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HDC1080 www.ti.com SNAS672A – NOVEMBER 2015 – REVISED JANUARY 2016 8.6.3 Configuration Register This register configures device functionality and returns status. Table 4. Configuration Register Description (0x02) NAME RST Bits [15] DESCRIPTION Software reset bit 0 Normal Operation, this bit self clears 1 Software Reset Reserved [14] Reserved 0 Reserved, must be 0 HEAT [13] Heater 0 Heater Disabled 1 Heater Enabled MODE [12] Mode of acquisition 0 Temperature or Humidity is acquired.
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HDC1080 SNAS672A – NOVEMBER 2015 – REVISED JANUARY 2016 www.ti.com 8.6.6 Device Register ID This register contains a factory-programmable identification value that identifies the device. This register distinguishes this device from other devices that are on the same I2C bus. A reading of the Device ID register returns 0x1050. Table 9.
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HDC1080 www.ti.com SNAS672A – NOVEMBER 2015 – REVISED JANUARY 2016 9 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 9.
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HDC1080 SNAS672A – NOVEMBER 2015 – REVISED JANUARY 2016 www.ti.com Typical Application (continued) 9.2.2 Detailed Design Procedure When a circuit board layout is created from the schematic shown in Figure 15 a small circuit board is possible. The accuracy of a RH and temperature measurement depends on the sensor accuracy and the setup of the sensing system.
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HDC1080 www.ti.com SNAS672A – NOVEMBER 2015 – REVISED JANUARY 2016 Table 10. Induced RH Offset Due to Extended Exposure to High Humidity and High Temperature (85°C/85% RH) 85°C/85% RH Duration (hours) 12 24 168 500 RH Offset (%) 3 6 12 15 When the sensor is exposed to less severe conditions, Figure 17 shows the typical RH offset at other combinations of temperature and RH.
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HDC1080 SNAS672A – NOVEMBER 2015 – REVISED JANUARY 2016 www.ti.com Layout Example (continued) Figure 18.
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HDC1080 www.ti.com SNAS672A – NOVEMBER 2015 – REVISED JANUARY 2016 12 Device and Documentation Support 12.1 Documentation Support 12.1.1 Related Documentation Texas Instruments Humidity Sensors, SNAA216, provides a general description of humidity sensing and important design guidelines.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 28-Jan-2016 In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
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PACKAGE MATERIALS INFORMATION www.ti.com 20-Aug-2016 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant HDC1080DMBR WSON DMB 6 3000 330.0 15.4 3.3 3.3 1.1 8.0 12.0 Q2 HDC1080DMBT WSON DMB 6 250 178.0 12.4 3.3 3.3 1.1 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 20-Aug-2016 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) HDC1080DMBR WSON DMB 6 3000 335.0 335.0 32.0 HDC1080DMBT WSON DMB 6 250 336.6 336.6 41.
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PACKAGE OUTLINE DMB0006A WSON - 0.8 mm max height SCALE 4.000 PLASTIC SMALL OUTLINE - NO LEAD 3.1 2.9 B A PICK AREA NOTE 4 PIN 1 INDEX AREA 3.1 2.9 (0.45) (1.3) (1.2) (0.22) C 0.8 MAX 0.08 C SEATING PLANE (0.2) TYP 0.05 0.00 1.5 0.1 EXPOSED THERMAL PAD 3 2X 2 4 7 2.4 0.1 4X 1 6 1 6X PIN 1 ID (OPTIONAL) 0.5 6X 0.3 0.45 0.35 0.1 0.05 C A B C 4221225/B 08/2016 NOTES: 1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only.
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EXAMPLE BOARD LAYOUT DMB0006A WSON - 0.8 mm max height PLASTIC SMALL OUTLINE - NO LEAD (1.5) SYMM 6X (0.6) 6 1 6X (0.4) SYMM 7 (2.4) (0.95) TYP 4X (1) 3 4 (R0.05) TYP ( 0.2) TYP (1) TYP (2.8) LAND PATTERN EXAMPLE SCALE:20X 0.07 MIN ALL AROUND 0.07 MAX ALL AROUND SOLDER MASK OPENING METAL METAL UNDER SOLDER MASK NON SOLDER MASK DEFINED (PREFERRED) SOLDER MASK OPENING SOLDER MASK DEFINED SOLDER MASK DETAILS 4221225/B 08/2016 NOTES: (continued) 5.
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EXAMPLE STENCIL DESIGN DMB0006A WSON - 0.8 mm max height PLASTIC SMALL OUTLINE - NO LEAD SYMM 6X (0.6) METAL TYP 6 1 6X (0.4) (0.63) 7 SYMM 4X (1) 2X (1.06) 3 4 (R0.05) TYP 2X (1.38) (2.8) SOLDER PASTE EXAMPLE BASED ON 0.125 mm THICK STENCIL EXPOSED PAD 7: 81% PRINTED SOLDER COVERAGE BY AREA UNDER PACKAGE SCALE:20X 4221225/B 08/2016 NOTES: (continued) 7. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release.
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