Datasheet

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Air Velocity Sensor Module

FS3000

Datasheet

September 9, 2020

Description

The FS3000 is a surface-mount type air velocity module utilizing a

MEMS thermopile-based sensor.

The FS3000 features a digital output with 12-bit resolution. The

sensor comprises a “solid” thermal isolation technology and silicon-

carbide coating to protect it from abrasive wear and water

condensation.

The FS3000 features a compact design fit for low profile

enclosures.

Typical Applications

 Data Center and Servers

 HVAC and air control systems

 Laminar flow control systems

 Air filtration and collection systems

Features

 Robust “solid” isolation technology

 Resistant to surface contamination

 Resistant to vibration and pressure shock

 Low power application

 Digital output: I2C

 Supply voltage: 3.3V

 Module operating temperature range: -20°C to +85°C

 Module size: 8  9  3.7mm

FS3000 Air Velocity Module

Summary of content (14 pages)

PAGE 1
Air Velocity Sensor Module Description FS3000 Datasheet Features The FS3000 is a surface-mount type air velocity module utilizing a MEMS thermopile-based sensor.  Robust “solid” isolation technology The FS3000 features a digital output with 12-bit resolution. The sensor comprises a “solid” thermal isolation technology and siliconcarbide coating to protect it from abrasive wear and water condensation.
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Air Velocity Sensor Module FS3000 Datasheet Application Circuit Note: C1, C2, C3 are 0.
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FS3000 Datasheet Contents 1. Pin Assignments ...........................................................................................................................................................................................4 1.1 Pin Descriptions...................................................................................................................................................................................4 2. Absolute Maximum Ratings .............................................
PAGE 4
FS3000 Datasheet 1. Pin Assignments Figure 1. 1.1 Pin Assignments for 8  9  3.7mm Module – Top View Pin Descriptions Table 1.
PAGE 5
FS3000 Datasheet 2. Absolute Maximum Ratings The absolute maximum ratings are stress ratings only. Stresses greater than those listed below can cause permanent damage to the device. Functional operation of the FS3000 at absolute maximum ratings is not implied. Exposure to absolute maximum rating conditions may affect device reliability. Table 2. Symbol VIN TSTOR Absolute Maximum Ratings Parameter Conditions Minimum Supply Voltage Storage Temperature © 2020 Integrated Device Technology, Inc.
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FS3000 Datasheet 3. Recommended Operating Conditions Table 3. Recommended Operating Conditions Symbol VIN Parameter Minimum Supply Voltage [a] Maximum 3.3 TAMB Ambient Operating Temperature [a] Must be regulated, changes in supply voltage will affect accuracy © 2020 Integrated Device Technology, Inc.
PAGE 7
FS3000 Datasheet 4. Electrical Characteristics Table 4. Electrical Characteristics Note: See important notes at the end of the table. Symbol Parameter IVIN Current Consumption FAIR Air Flow Range VOUT Digital Output RES Resolution EAIR Flow Accuracy tRESP Response Time fSCL SCL Clock Frequency VIL I2C Input Logic Low Threshold VIH I2C Input Logic High Threshold Conditions Typical Maximum 10 0 7.
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FS3000 Datasheet 5. Output Curve Figure 2. Air Velocity (m/sec) 0 1.07 2.01 3.00 3.97 4.96 5.98 6.99 7.23 FS3000-1005 Output Output (Count) 409 915 1522 2066 2523 2908 3256 3572 3686 © 2020 Integrated Device Technology, Inc.
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FS3000 Datasheet Figure 3. Air Velocity (m/sec) 0 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 11.00 13.00 15.00 FS3000-1015 Output Output (Count) 409 1203 1597 1908 2187 2400 2629 2801 3006 3178 3309 3563 3686 © 2020 Integrated Device Technology, Inc.
PAGE 10
FS3000 Datasheet 6. I2C Sensor Interface The FS3000 includes an I2C digital, two-wire interface with a bidirectional data line (SDA) and a clock line (SCL). The two lines are open drain and connected to the supply voltage via two pull-up resistors (Rp). The FS3000 operates as a slave device on the I2C bus with support of 100kHz and 400kHz bit rates. Figure 4.
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FS3000 Datasheet 7. Digital Output Measurements The FS3000 continuously measures in operation. The data is sent in byte packages. Each byte is followed by an ACK from the slave. The most significant bit (MSB) is transmitted first. To read the data, the following command is sent to the FS3000. After the START bit, the master device sends the 7-bit slave address followed by an eighth bit = 1 (READ). The READ bit indicates a transmission from the FS3000 (slave) to master. See Figure 6.
PAGE 12
FS3000 Datasheet 8. Calculating Checksum The checksum used for data integrity is the 2’s complement (negative) of the 256-modulo (8-bit) sum of the data bytes (does not include I2C address). Figure 7 shows the 5 bytes read: Example: Byte 1, 0xCC (Checksum) Byte 2, 0x01 Byte 3, 0x99 Byte 4, 0x01 or 0x00 Byte 5, 0x99 or 0x00 The 256-modulo (8-bit) sum is calculated as: 𝑠𝑢𝑚 = 0𝑥01 + 0𝑥99 + 0𝑥01 + 0𝑥99 = 0𝑥134 Validating the data payload is done by calculating the sum and adding it to the checksum.
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FS3000 Datasheet 9. Mechanical Drawings The package outline drawings are appended at the end of this document. The package information is the most current data available. 10. Ordering Information Orderable Part Number Description and Package MSL Rating Carrier Type Temperature FS3000-1005 0 to 7 m/sec air velocity module TBD Reel -20°C to +85°C FS3000-1015 0 to 15 m/sec air velocity module TBD Reel -20°C to +85°C 11.
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FS3000 Datasheet FS3000 Module Drawing Dimensions in mm. PCB Footprint Dimensions in mm. © 2020 Integrated Device Technology, Inc.