AN884 Datasheet, PDF (3/6 Pages) Maxim Integrated Products – Miniature Flow Sensor Has Electronic Temperature Compensation

A block diagram illustrates the IC's internal structure (Figure 3a and 3b). A patented sensor-
bridge excitation circuit counteracts any decrease in sensitivity by causing the bridge-drive
voltage to rise with temperature. The compensated sensor bridge also acts as a temperature
sensor, and is sufficiently linear to serve for correcting offset drift vs. temperature.
Figure 3a. Patented sensor-bridge excitation circuit
Figure 3b. A differential analog-output path
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