AD8021ARMZ-REEL7

Voltage - Input Offset:	400µV
Base Part Number:	AD8021
Supplier Device Package:	8-MSOP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply, Single/Dual (±):	4.5 V ~ 24 V, ±2.25 V ~ 12 V
Current - Output / Channel:	70mA
Current - Supply:	7.8mA
Series:	--
Current - Input Bias:	7.5µA
-3db Bandwidth:	560MHz
Slew Rate:	460 V/µs
Output Type:	--
Number of Circuits:	1
Amplifier Type:	Voltage Feedback
Part Status:	Active
Packaging:	Tape & Reel (TR)

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AD8021ARMZ-REEL7 Application Field and Working Principle

AD8021ARMZ-REEL7 is a dual-channel instrumentation amplifier belonging to the linear-amplifiers-instrumentation, OP amps, and buffer amps family. It is designed for high-precision, low-drift applications where low-noise performance and wide-bandwidth are required.The amplifier combines advanced CMOS differential input transconductors, a single-ended rail-to-rail output stage and low-noise input transistors to achieve excellent noise performance. The low voltage drift and low power consumption of AD8021ARMZ-REEL7 make it ideal for wide-bandwidth, low-noise operational amplifiers.The AD8021ARMZ-REEL7 has two inputs and one output. The first input is the differential input, while the second input is the reference input. On the output side, there is a single output, which is typically used as the output signal. The differential input allows the amplifier to process high-frequency signals without introducing any distortion. This is done by using an alternating stack of complimentary metal-oxide semiconductor (CMOS) transistors to saturate any potential oscillation. The reference amplifier, also known as the auto zeroing amplifier, is used to improve the accuracy of the amplifier. This is done by introducing a negative feedback loop which is used to correct for any errors in the differential input. The single-ended rail-to-rail output stage is designed to work in unison with the reference amplifier. It improves the accuracy, linearity, and noise performance of the amplifier. This stage also helps to minimize the power consumption of the amplifier. The low voltage drift and low power consumption of the AD8021ARMZ-REEL7 are achieved through its advanced design. The amplifier contains three sub-circuits: the input stage, the output stage, and the power management stage. Each of these sub-circuits is designed to work together and provide a low-noise, low-drift, and high-accuracy output. The input stage is designed to provide a wide bandwidth, low distortion, and low-noise response. The input stage consists of two cascaded CMOS transistors, one of which acts as a differential transconductance amplifier and the other as a voltage buffer. This combination allows the amplifier to process low-level input signals without significant distortion. The output stage is designed to provide a wide-bandwidth, low-noise, and rail-to-rail output voltage. The output stage uses a high-impedance gate-drive source to ensure low power consumption and low-noise operation. The output stage also consists of a level shifter that helps to maintain the output voltage level. Finally, the power management stage works to ensure a low-power consumption profile for the amplifier. This stage does so by controlling the power supply current. It also ensures low-noise operation by shutting off the power supply current when it is not needed. The AD8021ARMZ-REEL7 is capable of providing excellent noise performance and wide-bandwidth performance for a variety of applications. Its low-voltage drift and low power consumption make it the perfect solution for low-noise, low-distortion, and wide-bandwidth instrumentation amplifiers.

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