Datasheet SGP40 (Sensirion) - 5
| Manufacturer | Sensirion |
| Description | Indoor Air Quality Sensor for VOC Measurements |
| Pages / Page | 19 / 5 — 2 Specifications. 2.1 Electrical Specifications Table 2. Values. … |
| File Format / Size | PDF / 957 Kb |
| Document Language | English |
2 Specifications. 2.1 Electrical Specifications Table 2. Values. Parameter. Symbol Min. Typ. Max. Unit Comments. Figure 5. Table 2
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2 Specifications 2.1 Electrical Specifications Table 2
lists electrical specifications of the SGP40. Default conditions of 25 °C and 3.3 V supply voltage apply to values in the table below, unless otherwise stated. The SGP40 supports both I2C “standard-mode” and “fast-mode”.
Values Parameter Symbol Min. Typ. Max. Unit Comments
Supply voltage, hotplate supply VDD, 1.7 3.3 3.6 V Minimal voltage must be guaranteed also for the voltage8 VDDH maximum supply current specified in this table. VDD and VDDH must be connected to the same power supply, see
Figure 5
. Idle current IDD – 34 105 A The idle mode is activated after power-up, after calling the sgp4x_turn_heater_off command, or after a soft reset. Supply current under operation9 – 3.5 4.0 mA Average current consumption while the sensor is continuously operated at VDD, VDDH = 1.8 V. – 2.6 3.0 mA Average current consumption while the sensor is continuously operated at VDD, VDDH = 3.3 V. Communication – Digital 2-wire interface, I2C
Table 2
Electrical specifications.
2.2 Timing Specifications
Timings in
Table 3
refer to the power up and reset of the ASIC part and do not reflect the usefulness of the readings.
Parameter Symbol Condition Min. Typ. Max. Unit
Power-up time tPU After hard reset, VDD ≥ VPOR – 0.4 0.6 ms Soft reset time tSR After soft reset – 0.4 0.6 ms SCL clock frequency fSCL – – – 400 kHz
Table 3
System timing specifications.
2.3 Recommended Operating and Storage Conditions
Gas Sensing Specifications as detailed in
Table 1
are guaranteed only when the sensor is stored and operated under the recommended conditions as specified in
Table 4
and displayed in
Figure 3
and
Figure 4
. Prolonged exposure to conditions outside these conditions may reduce sensor performance. The sensor must not be exposed towards condensing conditions (i.e., >90 % relative humidity) at any time. 8 Any supply voltage as defined by the min./max. range may be used for continuous operation of the sensor. The typical value specifies the supply voltage at which outgoing quality control is performed. 9 Sending the sgp40_measure_raw_signal command enables continuous operation of the sensor. A 20 % higher current is drawn during 5 ms on VDDH after entering the measurement mode. www.sensirion.com Version 1.1 – September 2021 5/19
2 Specifications 2.1 Electrical Specifications Table 2
lists electrical specifications of the SGP40. Default conditions of 25 °C and 3.3 V supply voltage apply to values in the table below, unless otherwise stated. The SGP40 supports both I2C “standard-mode” and “fast-mode”.
Values Parameter Symbol Min. Typ. Max. Unit Comments
Supply voltage, hotplate supply VDD, 1.7 3.3 3.6 V Minimal voltage must be guaranteed also for the voltage8 VDDH maximum supply current specified in this table. VDD and VDDH must be connected to the same power supply, see
Figure 5
. Idle current IDD – 34 105 A The idle mode is activated after power-up, after calling the sgp4x_turn_heater_off command, or after a soft reset. Supply current under operation9 – 3.5 4.0 mA Average current consumption while the sensor is continuously operated at VDD, VDDH = 1.8 V. – 2.6 3.0 mA Average current consumption while the sensor is continuously operated at VDD, VDDH = 3.3 V. Communication – Digital 2-wire interface, I2C
Table 2
Electrical specifications.
2.2 Timing Specifications
Timings in
Table 3
refer to the power up and reset of the ASIC part and do not reflect the usefulness of the readings.
Parameter Symbol Condition Min. Typ. Max. Unit
Power-up time tPU After hard reset, VDD ≥ VPOR – 0.4 0.6 ms Soft reset time tSR After soft reset – 0.4 0.6 ms SCL clock frequency fSCL – – – 400 kHz
Table 3
System timing specifications.
2.3 Recommended Operating and Storage Conditions
Gas Sensing Specifications as detailed in
Table 1
are guaranteed only when the sensor is stored and operated under the recommended conditions as specified in
Table 4
and displayed in
Figure 3
and
Figure 4
. Prolonged exposure to conditions outside these conditions may reduce sensor performance. The sensor must not be exposed towards condensing conditions (i.e., >90 % relative humidity) at any time. 8 Any supply voltage as defined by the min./max. range may be used for continuous operation of the sensor. The typical value specifies the supply voltage at which outgoing quality control is performed. 9 Sending the sgp40_measure_raw_signal command enables continuous operation of the sensor. A 20 % higher current is drawn during 5 ms on VDDH after entering the measurement mode. www.sensirion.com Version 1.1 – September 2021 5/19
