SI7005-B-FM Silicon Laboratories Inc, SI7005-B-FM Datasheet

SI7005-B-FM

Manufacturer Part Number

SI7005-B-FM

Description

SI7005-B-FM

Manufacturer

Silicon Laboratories Inc

Datasheet

1.SI7005-B-FM.pdf (40 pages)

Specifications of SI7005-B-FM

Lead_time

Pack_quantity

Comm_code

85423990

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Features



Applications



Description

The Si7005 is a digital relative humidity and temperature sensor. This

monolithic CMOS IC integrates temperature and humidity sensor

elements, an analog-to-digital converter, signal processing, calibration

data, and an I

low-K polymeric dielectrics for sensing humidity enables the construction

of a low-power, monolithic CMOS sensor IC with low drift and hysteresis

and excellent long term stability.

Both the temperature and humidity sensors are factory-calibrated and the

calibration data is stored in the on-chip non-volatile memory. This ensures

that the sensors are fully interchangeable, with no recalibration or

software changes required.

The Si7005 is packaged in a 4x4 mm QFN package and is reflow

solderable. The optional factory-installed protective cover offers a low-

profile, convenient means of protecting the sensor during assembly (e.g.,

reflow soldering) and throughout the life of the product, excluding liquids

(hydrophobic/oleophobic) and particulates.

The Si7005 offers an accurate, low-power, factory-calibrated digital

solution ideal for measuring temperature, humidity, and dew-point in

applications ranging from HVAC/R and asset tracking to industrial and

consumer platforms.

Rev. 1.0 10/12

Relative Humidity Sensor



Temperature Sensor



0 to 100% RH operating range

–40 to +85 ºC (GM) or 0 to +70 ºC

operating range (FM)

Wide operating voltage range (2.1 to

3.6 V)

Low Power Consumption



Industrial HVAC/R

Thermostats/humidistats

Respiratory therapy

White goods

IGITA L

±1 ºC accuracy (maximum @ 0 to 70 °C)

± 4.5 % RH (maximum @ 20–80% RH)

±0.5 ºC accuracy (typical)

240 µA during RH conversion

C host interface. The patented use of industry-standard,

C H

UMIDITY AND



Micro-environments/data centers

Automotive climate control and

de-fogging

Asset and goods tracking



Integrated on-chip heater

4x4 mm QFN package

Excellent long term stability

Factory calibrated

Optional factory-installed

cover



C host interface

particulates

(hydrophobic/oleophobic)

Low-profile

Protection during reflow

Excludes liquids and

EMPERATURE

Patent protected; patents pending

GND

DNC

SDA

DNC

SCL

Ordering Information

See Ordering Guide.

Pin Assignments

ENSOR

Si7005

DNC

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