Datasheet

ENS160 Datasheet v0.95 preliminary / December 2020
3
Content Guide
Key Features & Benefits .................... 2
Applications .................................. 2
Properties ..................................... 2
1 Block Diagram ............................ 4
2 Pin Assignment ........................... 5
3 Absolute Maximum Ratings ............. 6
4 Electrical Characteristics ............... 7
5 Air Quality Signal Characteristics ..... 8
5.1 TVOC  Total Volatile Organic
Compounds ............................ 8
5.2 eCO
2
 Equivalent CO
2
................ 8
5.3 AQI-UBA  Air Quality Index of the
UBA ................................... 10
6 Single Gas Signal Characteristics .... 11
7 Gas Sensor Raw Resistance Signals .. 12
8 Signal Conditioning .................... 14
8.1 Baselining ............................ 14
8.2 Humidity Behavior & Compensation
.................................... 14
9 Output Signal Accuracy ............... 15
10 Initial Start-Up and Warm-Up ........ 15
10.1 Initial Start-Up ...................... 15
10.2 Warm-Up ............................. 15
11 Gas Sensor Status and Signal Rating 16
12 Recommended Sensor Operation .... 16
13 Recommended Sensor Storage ....... 16
14 Host Communication .................. 17
14.1 I
2
C Specification .................... 17
14.1.1 I
2
C Description ................... 17
14.1.2 I
2
C I/O and Timing Information 17
14.1.3 I
2
C Read Operation .............. 19
14.1.4 I
2
C Write Operation ............. 20
14.2 SPI Specification .................... 21
14.2.1 SPI Description ................... 21
14.2.2 SPI Timing Information ......... 21
14.2.3 SPI Read Operation .............. 22
14.2.4 SPI Write Operation ............. 22
15 Operation ............................... 23
16 Registers ................................ 24
16.1 Register Overview .................. 24
16.2 Detailed Register Description ..... 25
16.2.1 PART_ID (Address 0x00) ........ 25
16.2.2 OPMODE (Address 0x10) ........ 25
16.2.3 CONFIG (Address 0x11) ......... 25
16.2.4 COMMAND (Address 0x12) ...... 26
16.2.5 TEMP_IN (Address 0x13) ........ 27
16.2.6 RH_IN (Address 0x15) ........... 27
16.2.7 DATA_STATUS (Address 0x20) . 28
16.2.8 DATA_AQI (Address 0x21) ...... 28
16.2.9 DATA_TVOC (Address 0x22) .... 29
16.2.10 DATA_ECO2 (Address 0x24) .... 29
16.2.11 DATA_ETOH (Address 0x22) .... 29
16.2.12 DATA_T (Address 0x30) ......... 29
16.2.13 DATA_RH (Address 0x32) ....... 30
16.2.14 DATA_MISR (Address 0x38) ..... 30
16.2.15 GPR_WRITE (Address 0x40) .... 31
16.2.16 GPR_READ (Address 0x48) ...... 32
17 Application Information .............. 33
17.1 I
2
C Operation Circuitry ............. 33
17.2 SPI Operation Circuitry ............. 34
18 Soldering Information ................. 35
19 Package Drawings & Markings ........ 36
20 RoHS Compliance & ScioSense Green
Statement .............................. 38
21 Copyrights & Disclaimer .............. 38
22 Document Status ....................... 39
23 Revision Information .................. 39