Zero-Drift Instrumentation Amplifier

摘要

Microchip Technology Inc. announced the expansion of its instrumentation amplifier portfolio with the new zero-drift MCP6N16. This self-correct- ing architecture maximizes DC performance by enabling ultra-low offset, low-offset drift, and superior common-mode and power-supply rejection, while eliminating the adverse effects of 1/f noise. The result is very high accuracy across both time and temperature. The MCP6N16's low-power CMOS process technology enables low power consumption while still providing 500-kHz bandwidth, and it features a hardware-enable pin for even more power savings. This low-power operation and shutdown capability requires less current for the given speed and performance, which extends battery life and leads to less self-heating. Additionally, the amplifier's low, 1.8-V operation allows two dry-cell, 1.5-V batteries to be drained well beyond typical use, and its rail-to-rail input and output operation enables full-range use, even in low-supply conditions. This provides better performance across the entire operating-voltage range.