Input common-mode range of AD623 is wide permitting
the common mode voltage lower than power ground to
150mV. The supply voltage range is wide. Single power
supply (3.0-12V) can optimize performance. It’s
particularly conducive to batteries-powered, which is the
outstanding merit of AD623. Its power consumption is low
(1.5mW at 3V, the largest supply current is 575μA). Wide
supply range and output trait are quite fit for batteries
supply situation. Meanwhile, using single power supply
instrument amplifier AD623 has many advantages, such as
simplification circuit, cost-saving, space-saving etc.
Moreover, it possesses good direct current trait. Therefore,
AD623 is chosen to enlarge signals outputted by electric
bridge