AD8209WBRMZ-RL

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AD8209WBRMZ-RL is a family of low-cost, low-voltage, voltage-mode instrumentation amplifier. It is capable of operation from single supply voltage and provides a very linear amplification for input current signals with a maximum gain of 20V/V. It is well suited for remote medical monitoring and other medical applications requiring high isolation.

The AD8209WBRMZ-RL is designed using CMOS circuit technology and features a built‑in output protection circuit. This device is used to condition a wide variety of sensor signals such as strain, force, pressure, and flow transducers, among others. It is capable of providing a fast and stable response over a wide range of input frequencies.

Features/Benefits

• Low cost, low voltage operation (1.8V to 5.5V single supply)
• Low noise and distortion
• High input impedance
• High common mode rejection
• Gain errors are minimized by internal auto-zeroing
• Output protected against short circuits
• High isolation (ideal for remote medical applications)

Applications

• Medical monitoring systems
• Force, pressure, and flow transducers
• Industrial process control systems
• Data acquisition systems
• Temperature sensors
• Strain gages
• Respiration sensors

Working Principle

The AD8209WBRMZ-RL operates using a voltage-mode amplifier architecture. It contains two amplifier stages, a differential input stage and a single-ended output stage. The differential input stage is used to amplify the difference between two input signals. The gain of this stage is set by an external resistive divider. The output of this stage is fed to the single-ended output stage, which provides a stable output level regardless of the input signal or the supply voltage. The output stage is protected from short-circuit conditions by a transient suppression circuit. The resulting amplified signal is then output from the amplifier at the output pin.

The AD8209WBRMZ-RL is a versatile instrumentation amplifier for high precision signal conditioning. Its low voltage operation and high common mode rejection make it well suited for remote medical applications where very low power is required and safety is critical. Additionally, the output protection feature ensures reliable operation and high immunity to electrical noise.

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