AD8237ARMZ Micro-power, Zero-Drift, Rail-to-Rail Instrumentation Amplifier

The AD8237ARMZ is a high-performance instrumentation amplifier from Analog Devices Inc., designed to offer precision measurement in a compact and energy-efficient package. This device is part of the AD8237 series, which is renowned for its zero-drift architecture, ensuring outstanding DC precision over time and temperature. The AD8237ARMZ is particularly suitable for battery-powered applications and portable medical devices where power efficiency and accuracy are critical.

Featuring a micro-power design, the AD8237ARMZ consumes just 115 µA of supply current, making it an ideal choice for energy-sensitive applications. Its rail-to-rail input and output stages provide maximum dynamic range, which is essential when operating at low supply voltages. The device is capable of operating from a single 1.8 V to 5.5 V supply, providing flexibility for various power supply configurations.

The AD8237ARMZ offers a gain set with a single external resistor, allowing users to configure the device for gains from 1 to 1000, which provides versatility in signal amplification. Its high common-mode rejection ratio (CMRR) of 114 dB (G = 1) ensures accurate measurements in the presence of noise or differential signals that are common in industrial environments.

This instrumentation amplifier is available in a compact 8-lead MSOP (Mini Small Outline Package) that is well-suited for space-constrained applications. With its extended temperature range of -40°C to +125°C, the AD8237ARMZ is reliable across various operating conditions, making it a robust choice for both commercial and industrial applications.

Key features of the AD8237ARMZ include:

• Low offset voltage: 25 µV max
• Zero drift: 0.1 µV/°C max
• Low noise: 0.28 µV p-p (0.1 Hz to 10 Hz)
• High CMRR: 114 dB (G = 1)
• Wide power supply range: 1.8 V to 5.5 V
• Low power consumption: 115 µA supply current
• Compact 8-lead MSOP package

The AD8237ARMZ is an excellent choice for designers seeking a high-precision, low-power instrumentation amplifier for medical instrumentation, sensor signal conditioning, portable data acquisition systems, and battery-powered equipment.