CC-000015-DS revision: 11

Datasheet for CCS801

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© 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

The recommended application circuit for CCS801 is shown below.

CCS801

IAQ Sensor

MCU

(With integrated ADC)

ADC Input

PWM

NX2301

GND

Pin2: Heater+

Pin1: Sensor+

Pins: 3 & 4

PWM

10KΩ

Optional depends

on ADC input

impedance

+

-

NX2301

10KΩ

Notes:

1. The sensor can be operated in pulsed mode to reduce overall power consumption. In this case the

output from the MCU is available to drive an external MOSFET switch (p-channel). If not driven the

MOSFET input should be pulled high.

3. The PWM must operate with a minimum frequency of 10 kHz. The following table illustrates PWM

DD

Target Heater

1.5V

1.8V

2.5V

3V

3.3V

1.40

87%

60%

31%

22%

18%

1.50

100%

69%

36%

25%

21%

1.60

-

79%

50%

28%

24%

Recommended Application Circuit