AD8422BRMZ-RL

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AD8422BRMZ-RL Application Field and Working Principle

The AD8422BRMZ-RL is a low-power, low-noise, rail-to-rail output instrumentation amplifier featuring a high level of precision and a wide input voltage range of 2.7 V to V DD volts. The negative supply voltage limits of the device enable the input range of the instrumentation amplifier to be extended beyond the positive supply ranges with improved dynamic performance and low-noise applications. The AD8422BRMZ-RL is designed for applications such as data acquisition systems, industrial instrumentation, and medical instrumentation requiring low-noise, precision signal conditioning and excellent ac and dc performance.

Description

The AD8422BRMZ-RL is a low-power, low-noise, rail-to-rail output instrumentation amplifier featuring a high level of precision and a wide input voltage range of 2.7 V to V DD volts. The negative supply voltage limits of the device enable the input range of the instrumentation amplifier to be extended beyond the positive supply ranges with improved dynamic performance and low-noise applications. The AD8422BRMZ-RL is designed for applications such as data acquisition systems, industrial instrumentation, and medical instrumentation requiring low-noise, precision signal conditioning and excellent ac and dc performance.

Features

• Wide input common-mode voltage range (2.7 V to V DD The output voltage range extends from V EE to V DD
• High precision, low-noise operation (1.36 µV P-P noise, 90 dB CMRR, 10 kHz, V DD = 5 V);
• Low power (1.2 mA maximum);
• Rail-to-rail outputs;
• Internal 2 V/V gain set resistor;
• Fail-safe operation;
• No phase reversal;
• Fast settling time (50 µs);
• Available in both 8-lead SOIC and MSOP packages;
• Wide input voltage noise range (4 nV/√Hz to 1 µV/√Hz);
• Wide input bias current range (100 pA/√Hz to 10 µA/√Hz).

Benefits and Applications

The AD8422BRMZ-RL is designed for low-power, low-noise, precision signal conditioning applications, such as data acquisition systems, industrial instrumentation, and medical instrumentation, where excellent ac and dc performance is required. The low input voltage noise, ±2 V/V gain adjustability, and high CMRR make the AD8422BRMZ-RL an ideal choice for high-accuracy, low-noise, precision applications. The output voltage range extends from V EE to V DD , ensuring fail-safe operation even with low supply voltages. The fast settling time (50 µs), low input voltage noise (4 nV/√Hz to 1 µV/√Hz), and wide input bias current range (100 pA/√Hz to 10 µA/√Hz) make the AD8422BRMZ-RL attractive for precision, low-noise circuits. The device is available as an 8-lead SOIC and MSOP package.

Working Principle

The AD8422BRMZ-RL is an instrumentation amplifier with a low-noise, rail-to-rail output. Its wide input voltage range is 2.7 V to V DD volts, with improved dynamic performance and low-noise applications enabled by the negative supply voltage limit. The device uses two internally matched resistors to set its gain to 2 V/V. The internal architecture of the instrumentation amplifier produces high CMRR values for accurate signal measurements in the presence of common mode noise. The low input voltage noise and wide input bias current range make the AD8422BRMZ-RL an excellent choice for low-noise, precision circuit designs. The fast settling time of 50 µs ensures fast signal settling for stable output values. The device is contained in an 8-lead SOIC and MSOP package.

Conclusion

The AD8422BRMZ-RL is an ideal instrumentation amplifier for low-power, low-noise applications requiring excellent ac and dc performance. Its wide input voltage range and rail-to-rail output make it suitable for precision signal conditioning in data acquisition systems, industrial instrumentation, and medical instrumentation. Its high CMRR, low input voltage noise, and wide input bias current range enable the device to be used in high-accuracy, low-noise circuits. The fast settling time (50 µs) ensures fast signal settling for stable output values. The device is available in both 8-lead SOIC and MSOP packages.

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