AD521LDZ

Current - Input Bias:	40nA
Base Part Number:	AD521
Supplier Device Package:	14-CDIP
Package / Case:	14-CDIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	0°C ~ 70°C
Voltage - Supply, Single/Dual (±):	±5 V ~ 18 V
Current - Supply:	5mA
Voltage - Input Offset:	1mV
Series:	--
-3db Bandwidth:	2MHz
Slew Rate:	10 V/µs
Output Type:	--
Number of Circuits:	1
Amplifier Type:	Instrumentation
Part Status:	Active
Packaging:	Tube

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AD521LDZ Application Field and Working PrincipleAD521LDZ is a popular instrumentation amplifier (also commonly known as an \'intrument-amp\') that is typically used to amplify small signals that are of low-amplitude, low-efficiency, and usually found in very noisy electrical environments. This type of amp is especially suitable for sensing very low-level signals in hard-to-reach areas and for small-scale industrial applications like automotive-related processes. It can be applied in measuring strain, pressure, temperature and other phenomena that require high precision, accuracy and stability.The AD521LDZ was designed by Analog Devices, Inc., and it has been a standard choice for many applications since its introduction. It is a three-opamp instrumentation amplifier that uses single-supply operation, thus having many advantages over other types of instrumentation amplifiers. For instance, the AD521LDZ has a low power consumption compared to other amplifiers and its low voltage operation means that it can be incorporated into a variety of systems without any extra impact on the power supply.The AD521LDZ’s working principle can be divided into two parts: an input stage, and a gain/output stage. The input stage consists of two equal-value resistors (R1 and R2) that are connected in series across the input voltage. These resistors divide the input voltage into two equal parts and feed the inputs of the two amplifying op-amps. The gain of the amplifier is then determined by the resistor ratio of R1 and R2. The output stage utilizes a third op-amp to sum up the voltages from the first two stages. The output of the amplifier is then fed to the load resistance (R3).In summary, the AD521LDZ is an ideal choice for applications that require either precision, or low-voltage operation. The amplifier utilizes three op-amps, two resistors and one load resistor to provide stable and accurate output measurements. The advantages of this amplifier type include its low power consumption, single-supply operation, and its ability to amplify small signals in very noisy environments.

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