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CCS803 Schematic ( PDF Datasheet ) - CMOS Sensors

Teilenummer CCS803
Beschreibung Ultra-low power gas sensor
Hersteller CMOS Sensors
Logo CMOS Sensors Logo 




Gesamt 6 Seiten
CCS803 Datasheet, Funktion
CC-000017-DS revision: 11
Datasheet for CCS803
CCS803 Ultra-low power gas sensor for Ethanol detection
Cambridge CMOS Sensors (CCS) micro-hotplate technology
provides a unique silicon platform for the CCS80x range of Metal
Oxide (MOX) gas sensors. These devices enable sensor
miniaturisation, have ultra-low power consumption and provide
fast response times due to the ability to heat the micro-hotplate
very quickly.
The micro-hotplates are fabricated using a robust silicon dioxide
membrane and include an embedded tungsten heating element
to heat the MOX based sensing material. The MOX sensing
material can be heated up to 500°C to allow the electrical
resistance of the MOX sensor to be monitored to detect the
target gas. By exploiting the fast heater cycling times,
temperature modulation techniques can be used to reduce the
device power consumption and implement advanced gas sensing
methods.
Software libraries containing proprietary algorithms and example
Android application are available for alcohol breathalyser use
case.
Key Benefits
Ultra-low power
consumption - ideal for
battery operated devices
High sensitivity to Ethanol
Fast heating time <25ms
for quick response
Compact 2mm x 3mm
DFN package for small
form factor designs
Product Overview
The CCS803 is an ultra-low power MOX gas sensor for monitoring
Ethanol.
For CCS803 a supply voltage (VH) is provided to the integrated
micro-heater and the gas concentration can be correlated to the
change in resistance of the MOX sensing layer (RS).
VH can be set using a low-dropout (LDO) regulator or operated in
pulsed PWM mode to reduce power consumption. The sensor
resistance (RS) is typically determined using a series load resistor
(RL), a reference voltage (VREF), and an output voltage (VOUT) read
by an Analogue-to-Digital Converter (ADC). The reference voltage
(VREF) must only be enabled during the sensor reading.
CCS803 is supported in a compact 2 mm x 3 mm DFN (Dual Flat
No lead) package as standard.
Recommended Sensor
Configuration
Applications
Detection of Ethanol
Alcohol breathalyser in
consumer devices
Page | 1
© Cambridge CMOS Sensors Ltd, Deanland House, Cowley Road, Cambridge, CB4 0DL, UK
Website: www.ccmoss.com
Telephone: +44 1223 395 551
Date Issued: 26 May 2016






CCS803 Datasheet, Funktion
CC-000017-DS revision: 11
Datasheet for CCS803
Ordering Information
Part Number
CCS803A-COPR
CCS803A-COPS
Description
CCS803 Ultra-low power gas sensor for
ethanol detection
Sample of CCS803 Ultra-low power gas
sensor for ethanol detection
Package
2x3mm DFN
MOQ
5000
2x3mm DFN
100
Notes:
1. Refer to JEDEC J-STD020 lead-free standard for typical soldering reflow profile
2. Refer to application note CC-000090-AN on device assembly guidelines
3. Refer to application note CC-000018-AN on CCS80x hardware design guidelines.
The contents of this document are subject to change without notice. While every care has been taken to ensure the accuracy of the contents of this document,
CCS cannot accept responsibility for any errors. CCS products are not designed, authorized or warranted for use in medical, military, aircraft, space or life
support equipment, nor in applications where failure or malfunction of a CCS product can reasonably be expected to result in personal injury, death or severe
property or environmental damage. CCS accepts no liability for inclusion and/or use of CCS products in such equipment or applications and therefore such
inclusion and/or use, is at the customer’s own risk. As any devices operated at high temperature have inherently a certain rate of failure, it is therefore necessary
to protect against injury, damage or loss from such failures by incorporating appropriate safety measures. CCS products are not designed to work in condensing
high humidity environments
Page | 6
© Cambridge CMOS Sensors Ltd, Deanland House, Cowley Road, Cambridge, CB4 0DL, UK
Website: www.ccmoss.com
Telephone: +44 1223 395 551
Date Issued: 26 May 2016

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