In the past, the digital circuit was mainly used. After changing the work, the design of the analog circuit was gradually increased. However, through the learning and understanding of ADI, these are not a problem, from simple amplifier applications to special applications of amplifiers. I know everything about it. I used the AD4665-2 to make a data acquisition and amplification circuit. Its rail-to-rail, low power consumption and minimum threshold solved my special problem well, and then applied it to the voltage reference output circuit, which was fully exerted. Its role, ADI's chip is indeed very powerful ~~~
The following is an introduction to the ADA4665-2:
It is a rail-to-rail input/output, dual amplifier optimized for lower power budget designs. At 25°C, the maximum supply current per amplifier is as low as 400μA; the maximum supply current per amplifier is 600μA over the extended industrial temperature range, making this device ideal for low power applications. In addition, the ADA4665-2 has an extremely low bias current with a maximum of 1 pA, an offset voltage drift as low as 3 μV/°C, and a bandwidth of 1.2 MHz. All of these features, along with a wide supply voltage range of 5 V to 16 V, make the device widely used in other applications, including process control, instrumentation, buffering, and sensor front ends. In addition, rail-to-rail input and output swings are available to make them more versatile. The ADA4665-2 is specified over the −40°C to +125°C temperature range and is available in standard SOIC and MSOP packages.
In my project, the signal amplifier used as analog signal acquisition mainly uses a wide single power supply, rail-to-rail input characteristics, and low power consumption. The second is to use it to build an adjustable voltage reference. Output circuit, because my system is 4V (lithium battery powered), I want to output 0~10V signal, in order to ensure the stability of the output signal, the constant voltage source output adjustment circuit is used. If you need this, please follow I contact ~~~