CCS811 Standard Board
ams Eval Kit Manual
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Content Guide
1 Introduction .......................................................................................................................... 3
2 General Description ............................................................................................................. 3
2.1 USB to I2C Board (ENS-USB-I2CIO) ................................................................................... 3
2.2 CCS811 Sensor Board (ENS-CCS811-SB) ......................................................................... 4
3 Software Installation ............................................................................................................. 5
4 Board Interface and Test Points .......................................................................................... 6
4.1 Board Interface ..................................................................................................................... 6
4.2 Test Points ........................................................................................................................... 6
5 Schematic, PCB Layout and Bill of Materials ...................................................................... 7
5.1 Schematic Design ................................................................................................................ 7
5.2 Bill of Materials (BOM) ......................................................................................................... 7
5.2.1 USB to I2C Board (ENS-USB-I2CIO) ................................................................................... 7
5.2.2 CCS811 Sensor Board (ENS-CCS811-SB) ......................................................................... 7
6 Summary .............................................................................................................................. 8
7 Ordering & Contact Information ........................................................................................... 9
8 Copyrights & Disclaimer ..................................................................................................... 10
9 Revision Information .......................................................................................................... 11
CCS811 Standard Board
ams Eval Kit Manual
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1 Introduction
The document provides an overview of the CCS811 evaluation kit and covers the following topics:
evaluation kit general description, software installation, board interface, test points, schematics,
PCB layout and bill of materials (BOM).
2 General Description
The CCS811 evaluation kit comes with the following components:
ENS-USB-I2CIO : USB to I2C board
ENS-CCS811-SB : CCS811 sensor board
Thanks Card containing URL to download related software and documentation
USB 2.0 A Male to Micro B cable
2.1 USB to I2C Board (ENS-USB-I2CIO)
The USB to I2C board refer to as ENS-USB-I2CIO, as shown in Figure 1, allows control and
measurement of the CCS811 sensor board using the ENS Dashboard. By default the USB to I2C
board provides a 3.3 V supply to the CCS811 sensor board.
Figure 1 USB to I2C Board
The USB to I2C board has the following key features:
Silicon Labs CP2112 device which provides a simple solution for controlling I2C slave, the
nWAKE and nRESET signals and monitors the nINT signal
Board dimensions 42mm length x 18mm width
Standard micro USB connector and board interface with power (VDD, GND) and I2C Signal
(SCL, SDA).
Supports Standard I2C mode (100 kHz) and Fast I2C mode (400 kHz)
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ams Eval Kit Manual
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2.2 CCS811 Sensor Board (ENS-CCS811-SB)
The CCS811 sensor board refer to as ENS-CCS811-SB, as shown in Figure 2, is an evaluation
platform for the CCS811 device. It contains a CCS811 digital VOC gas sensor with an ENS210
relative humidity and temperature sensor and has I2C interface which is compatible with the USB to
I2C board for USB connection to PC / laptop
Figure 2 CCS811 Sensor Board
The sensor board has the following key features:
CCS811 ultra-low power digital gas sensor for monitoring indoor air quality
ENS210 relative humidity and temperature sensor with I2C Interface used to compensate
for environmental changes
Board dimensions 25mm length x 18mm width
Board interface with power (VDD, GND) and I2C Signal (SCL, SDA).
Sensor chips support standard I2C mode (100 kHz) and fast I2C mode (400 kHz)
Sensor board supports 1.8 V to 3.6 V
By plugging the CCS811 sensor board into the USB to I2C board as shown in Figure 3, direct
connection to PC is enabled via USB.
Figure 3 CCS811 Sensor Board with USB to I2C board
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ams Eval Kit Manual
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A block diagram of the CCS811-LG_EK_ST which illustrates the end-to-end connection between
the PC via USB to I2C board (ENS-USB-I2CIO) and CCS811 sensor board (ENS-CCS811-SB) is
shown in Figure 4 below.
Figure 4 Block Diagram of CCS811-LG_EK_ST
ENS-USB-I2CIO
ENS-CCS811-SB
CP2112
USB HID to I2C bridge
SDA
ADDR
SCK
VDD
GND
GPIOx CCS811
CCS811
Digital VOC sensor
SCK
SDA
ENS210
RH + T Sensor
SCK
SDA
GND
VDD
ADDR
nWAKE
VDD
GND
USB
Relative humidity and temperature data from ENS210 can be read on the I2C bus and this
information can be written to CCS811 to compensate for temperature and humidity changes for
indoor air quality monitoring.
3 Software Installation
Quick steps:
Connect CCS811 sensor board (ENS-CCS811-SB) into USB to I2C board (ENS-USB-I2CIO)
Connect USB to I2C board (ENS-USB-I2CIO) via USB cable to Windows PC
Install Windows PC ENS dashboard application available at http://ens.ams.com/
The ENS Dashboard application setup wizard will be launched and guide you through the installation,
please refer to the ENS Dashboard user manual.
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ams Eval Kit Manual
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4 Board Interface and Test Points
4.1 Board Interface
The signal labels and pin designators for the interface are shown in Figure 5.
Figure 5 Board Interface
in (s)
Label
Description
1
VDD
Supply voltage
2
SDA
I2C data
3
SCL
I2C clock
4
nWAKE
Wake up pin. Active low
5
nINT
Optional interrupt pin. Active low
6
nRESET
Optional reset pin. Active low
7
GND
Ground
4.2 Test Points
There are 3 test points for I2C address, GND and PWM as shown below on the CCS811 sensor
board (ENS-CCS811-SB).
Figure 6 CCS811 Sensor Board Test Points
Ground
Address
PWM
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ams Eval Kit Manual
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5 Schematic, PCB Layout and Bill of Materials
The schematic design, PCB layout and bill of materials (BOM) for CCS811-LG_EK_ST is
documented in the following sections.
5.1 Schematic Design
The schematic design for USB to I2C board (ENS-USB-I2CIO) and the CCS811 sensor board (ENS-
CCS811-SB) is documented at the end of the document.
5.2 Bill of Materials (BOM)
The bill of materials (BOM) for the USB to I2C board (ENS-USB-I2CIO) and CCS811 sensor board
(ENS-CCS811-SB) are shown in the following sections.
5.2.1 USB to I2C Board (ENS-USB-I2CIO)
Figure 7 Bill of Materials (BOM) for the USB to I2C Board
Label
Description
Part Number
Manufacturer
U1
IC - USB to I2C bridge QFN24
CP2112
Silicon labs
U3
ESD Protection Device SOT-14
SP0503BAHTG
LITTLEFUSE
R1
330K Resistor 0402
CRG0402J330K
TE CONNECTIVITY
R2
0R Jumper Resistor 0402
ERJ-2GE0R00X
PANASONIC
ELECTRONIC
R4, R5
1K Resistor 0402
ASC0402-1K0FT10
WELWYN
R6, R7, R8
4K7 Resistor 0402
CRG0402F4K7
TE CONNECTIVITY
L1
Inductor 0402-N
742843122
WURTH ELEKTRONIK
C1,C6,C7
100nF Capacitor 0402
MC0402X104K100CT
MULTICOMP
C2, C3, C4
4.7uF Capacitor 0402
GRM188R61A475KE15D
Murata
C5
10nF Capacitor 0402-N
MCCA000077
MULTICOMP
LED1-TX
Chip LED 0603
150060GS75000
WURTH ELEKTRONIK
LED2-RX
Chip LED 0603
150060YS75000
WURTH ELEKTRONIK
USB
USB_MICROBOUT
47346-0001
Molex
X1
Board-To-Board Connector
38-00-1337
Molex
5.2.2 CCS811 Sensor Board (ENS-CCS811-SB)
Figure 8 Bill of Materials (BOM) for the CCS811 sensor Board
Label
Description
Part Number
Manufacturer
S1
CCS811B Digital gas sensor for
indoor air quality monitoring
CCS811B-JOPR
ams AG
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ams Eval Kit Manual
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Label
Description
Part Number
Manufacturer
S2
Relative Humidity and
Temperature
Sensor with I²C Interface
ENS210-LQFM
ams AG
X1
Connector 7pin 2.54mm
22-28-6070
Molex
C1
100nF Capacitor 0402
MC0402X104K100CT
MULTICOMP
C2
4.7uF Capacitor 0402
GRM188R61A475KE15D
Murata
R1
100KΩ Resistor 0402
MCWR04X1003FTL
MULTICOMP
R2(8-4)
100kΩ NTC Thermistor 0402-N
NCP15WF104F03RC
Murata
6 Summary
This document describes the CCS811 evaluation kit about what it is and how to use it from the user
point of view.
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ams Eval Kit Manual
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7 Ordering & Contact Information
Ordering Code
Description
CCS811-LG_EK_ST
CCS811 Eval Kit Standard Board
Technical Support is available at:
www.ams.com/Technical-Support
Provide feedback about this document at:
www.ams.com/Document-Feedback
For further information and requests, e-mail us at:
ams_sales@ams.com
For sales offices, distributors and representatives, please visit:
www.ams/com/contact
Headquarters
ams AG
Tobelbader Strasse 30
8141 Premstaetten
Austria, Europe
Tel: +43 (0) 3136 500 0
Website: www.ams.com
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ams Eval Kit Manual
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8 Copyrights & Disclaimer
Copyright ams AG, Tobelbader Strasse 30, 8141 Premstaetten, Austria-Europe. Trademarks
Registered. All rights reserved. The material herein may not be reproduced, adapted, merged,
translated, stored, or used without the prior written consent of the copyright owner.
Demo Kits, Evaluation Kits and Reference Designs are provided to recipient on an “as is” basis for
demonstration and evaluation purposes only and are not considered to be finished end-products
intended and fit for general consumer use, commercial applications and applications with special
requirements such as but not limited to medical equipment or automotive applications. Demo Kits,
Evaluation Kits and Reference Designs have not been tested for compliance with electromagnetic
compatibility (EMC) standards and directives, unless otherwise specified. Demo Kits, Evaluation Kits
and Reference Designs shall be used by qualified personnel only.
ams AG reserves the right to change functionality and price of Demo Kits, Evaluation Kits and
Reference Designs at any time and without notice.
Any express or implied warranties, including, but not limited to the implied warranties of
merchantability and fitness for a particular purpose are disclaimed. Any claims and demands and any
direct, indirect, incidental, special, exemplary or consequential damages arising from the inadequacy
of the provided Demo Kits, Evaluation Kits and Reference Designs or incurred losses of any kind (e.g.
loss of use, data or profits or business interruption however caused) as a consequence of their use
are excluded.
ams AG shall not be liable to recipient or any third party for any damages, including but not limited to
personal injury, property damage, loss of profits, loss of use, interruption of business or indirect,
special, incidental or consequential damages, of any kind, in connection with or arising out of the
furnishing, performance or use of the technical data herein. No obligation or liability to recipient or
any third party shall arise or flow out of ams AG rendering of technical or other services.
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ams Eval Kit Manual
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9 Revision Information
Changes from previous version to current revision 1-01 (2017-Jan-16)
Page
Minor updates only
Note: Page numbers for the previous version may differ from page numbers in the current revision.
Correction of typographical errors is not explicitly mentioned.
Relative Humidity + Temperature Sensor
ENS-CCS811-SB
Copyright AMS 2016
Design Date: 26 / 10 / 2016
ENS-CCS811-SB - V1
GND
22-23-2071
4.7uF
GND
4K7
GND
CCS811
GND
100n
4K7
100k
NTC (100k)
GND
ENS210
GND
GND
X1-1
X1-2
X1-3
X1-4
X1-5
X1-6
X1-7
C1
R1
NINT
3NRESET
2
NWAKE
7
ADDR
1
VDD 6
SENSE 5
AUX 8
SDA
9
SCL
10
PWM 4
GND PAD
S1
C2
R2
R3
R4
PGND
ADDR
PWM
VSS1
P4
VSS2
P5
VDD P1
SDA
P3
SCL
P2
S2
I2C_SCL
I2C_SCL
I2C_SCL
I2C_SDA
I2C_SDA
I2C_SDA
NRESET
NRESET
NRESET
NINT
NINT
VDD
VDD
VDD
VDD
VDD
VDD
VDD
AUX
AUX
NWAKE
NWAKE
PWM
PWM
ADDR
ADDR
A
B
C
D
E
12345678
A
B
C
D
E
1
2
3
4
5
6
7
8
X1
C1
S1
S2
R2 - Power Selector
Fit 1 position only; 3V3 by default
Copyright AMS 2016
Design Date: 26 / 10 / 2016
ENS-USB-I2CIO
ENS-USB-I2CIO
LDO output must >= 1V8 and <= 3V6
H
4.7uF100n
10n 330k
GND
GND
4K7
22-23-2071
CP2112
1k yellow
1k green
4.7uF
4K7
4K7 RESISTOR-DOUBLE
SP0503BAHTG
GND
100n
100n
4.7uF
N.C.
GND
GND
GND
GND GND
GND
GND GND GND
L1
C2C1
C5 R1
1
2
3
4
5
R6
X1-1
X1-2
X1-3
X1-4
X1-5
X1-6
X1-7
U1
D+
3
D-
4
GND
2VDD 6
VPP 16
VREGIN
7
-RESET
9
GND-PAD
EXP
VBUS
8
GPIO0 23
GPIO1 22
GPIO2 21
GPIO3 20
GPIO4 15
GPIO5 14
GPIO6 13
GPIO7 12
SDA 1
SCL 24
VIO 5
-SUSPEND 17
SUSPEND 11
R4
RX
R5
TX
C3
R7
R8
R2
U3
1
2 3
4
C6
C7
C4
U2
GND
IN OUT
SCL0
SCL0SDA0
SDA0
D-
D-
D-
D+
D+
D+
VBUS
VBUS
USB_5V
USB_5V
RST
VPP
NWAKE
NWAKE
NINT
NINT
NRESET
NRESET
LED2
LED2
LED1
LED1
>=1V8
DUT_VDD
DUT_VDD
DUT_VDD
DUT_VDD
DUT_VDD
DUT_VDD
SL_3V3
SL_3V3
A
B
C
D
E
1 2 3 4 5 6 7 8
A
B
C
D
E
1
2
3
4
5
6
7
8
USB
C
A
C
A
L1
C2
C1
C5
R1
X1
U1
RX
TX
C3
U3
C4
U2
