AD8655ARMZ

Voltage - Input Offset:	50µV
Base Part Number:	AD8655
Supplier Device Package:	8-MSOP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply, Single/Dual (±):	2.7 V ~ 5.5 V
Current - Output / Channel:	220mA
Current - Supply:	3.7mA
Series:	DigiTrim®
Current - Input Bias:	1pA
Gain Bandwidth Product:	28MHz
Slew Rate:	11 V/µs
Output Type:	Rail-to-Rail
Number of Circuits:	1
Amplifier Type:	General Purpose
Part Status:	Active
Packaging:	Tube

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, AD8655ARMZ Application Field and Working PrincipleThe AD8655ARMZ is a high performance instrumentation amplifier from Analog Devices. It is a single, integrated component that consolidates high common-mode rejection, a wide operating temperature range, and fast settling time into one robust package. It is suitable for a wide range of applications in industrial, consumer, and medical devices, including pressure and strain measures, thermal measurement, and more. This article will discuss the AD8655ARMZ application field and working principle.ApplicationsThe AD8655ARMZ is suitable for strain and pressure measurement, acceleration, thermal measurement, and other industrial and consumer applications. In strain measurements, its integrated input buffer simplifies connections and greatly reduces noise. In pressure measurements, the AD8655ARMZ provides high accuracy and nearly 100 dB common-mode rejection. For acceleration, it offers excellent sensitivity, low drift, and fast settling time. In thermal measurements, this device has exceptional temperature stability, as well as a low-current draw. The AD8655ARMZ is available in an industrial grade plastic package with power supply rails that range from 2.7V to 5.5V. It is also available in a space-saving SOIC-8 package that is ideal for tight design constraints.Working PrincipleThe AD8655ARMZ includes an internal differential amplifier, which amplifies the differential voltage across the input pins to create an amplified output. The AD8655ARMZ also includes an offset voltage buffer that provides a steady reference voltage across the input terminals and reduces offset voltage error. The device is further optimized to reject common-mode noise. This allows it to reject signals coming in at the same voltage level on both input terminals, ensuring that only the intended signal is amplified.The AD8655ARMZ has a wide temperature operating range, from -40°C to +85°C, and is rated to last over 1 million cycles. It offers up to 98 dB of common-mode rejection, a fast settling time of 9 µs, and excellent CMRR. It draws only 4.5 mA of current when operating, making it power efficient. ConclusionThe AD8655ARMZ is a high performance instrumentation amplifier from Analog Devices that is suitable for a wide range of applications, including strain and pressure measurement, acceleration, thermal measurement, and more. It includes an integrated input buffer that simplifies connections and drastically reduces noise, as well as an offset voltage buffer that provides a steady reference voltage across the input terminals to reduce offset voltage error. The device is also optimized to reject common-mode noise, ensuring clean amplification of the intended signal. The AD8655ARMZ has a wide temperature operating range and is rated to last over 1 million cycles. It draws only 4.5 mA of current when operating, making it a highly efficient solution.

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