Product Overview: MAX4378FASD from Maxim Integrated

The MAX4378FASD is a high-precision, low-cost, low-side current-sense amplifier designed by Maxim Integrated, a leader in analog and mixed-signal engineering. This device is ideal for a wide range of applications, including power management, battery charging, and overcurrent protection circuits, where accurate current measurement is crucial.

Featuring a wide input common-mode range of -0.1V to +28V, the MAX4378FASD is capable of monitoring the current in both high-side and low-side configurations. This flexibility allows it to be used in systems where the ground reference is not constant, such as in battery-powered applications. The device operates from a single 2.85V to 28V supply, making it suitable for a variety of power environments.

The MAX4378FASD boasts a high accuracy with a low input offset voltage of only 250µV (max) and a gain error of less than 1% (max), ensuring precise current measurement across the full operating temperature range. The device’s bandwidth of 200kHz allows it to monitor fast transient currents, which is essential for protecting circuits from sudden current spikes. Additionally, the amplifier's quiescent current is a mere 100µA, contributing to overall system power efficiency.

This current-sense amplifier comes in a space-saving 8-pin SO package, making it an excellent choice for compact designs where board space is at a premium. Its robust design includes a wide -40°C to +125°C operating temperature range, which ensures reliable performance in harsh environmental conditions.

Key features of the MAX4378FASD include:

• High-Side or Low-Side Current Sensing
• Wide Input Common-Mode Range: -0.1V to +28V
• Single Supply Operation: 2.85V to 28V
• Low Input Offset Voltage: 250µV (max)
• Low Gain Error: <1% (max)
• High Bandwidth: 200kHz
• Low Quiescent Current: 100µA
• Extended Temperature Range: -40°C to +125°C
• Compact 8-Pin SO Package

In summary, the MAX4378FASD from Maxim Integrated is a versatile and reliable current-sense amplifier that offers high accuracy, low power consumption, and a compact footprint for modern electronic applications requiring precise current monitoring.