Table 1 Performance comparison with state-of-the-art temperature-compensated thermal flow sensing systems

From: System-level modeling with temperature compensation for a CMOS-MEMS monolithic calorimetric flow sensing SoC

Ref.

System packaging

Power consumption (mW)

Sensitivity

Response time (ms)

Flow range (m/s)

Temperature drift

Compensation type

21

MEMS & PCB circuit

N/A

N/A

N/A

0–20; N/ALR

±3.5%Sen (−20 to 40 °C)

Software-based algorithm compensation

26

MEMS & PCB circuit

N/A

N/A

36b

0–6.37a; N/ALR

2.5%Sen (20–34 °C)

Hardware-based circuitry compensation

27

CMOS-MEMS & PCB circuit

<2.77PH

543 mV/(m/s)

N/A

−11 to 11; −1.3 to 1.3LR

0.5%Sen (22–48 °C)

Hardware-based circuitry compensation

20

MEMS & PCB circuit

<158.1PH; <333.5PS, a

N/A

N/A

0–33; N/ALR

2.7%Sys (0–40 °C)

Software-based algorithm compensation

This work

CMOS-MEMS monolithic

<0.92PH; <4.96PS

156 mV/(m/s)

87.5b

−10 to 10; −6 to 6LR

±1.6%Sys (0–50 °C)

Hardware-based circuitry compensation

  1. N/A = Specification not available
  2. aEstimated from available data
  3. bThe time taken for a sensor to reach 90% of the final value
  4. SenSensor-level compensation
  5. SysSystem-level compensation
  6. LRLinear range of MEMS thermal flow sensors
  7. PHHeating power
  8. PSSystem power