Zero-drift instrumentation amplifier uses self-correcting architecture

July 16, 2014 // By Graham Prophet
Microchip’s MCP6N16 amplifier maximises DC performance with ultra-low offset, low-offset drift, superior common-mode and power-supply rejection and zero 1/f noise

The zero-drift MCP6N16 employs a self-correcting architecture that delivers very high accuracy across both time and temperature. Low-power CMOS process technology enables low power consumption while still providing 500 kHz bandwidth, and it features a hardware-enable pin for further 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. The amplifier's 1.8V operation allows two dry-cell, 1.5V 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.

The MCP6N16 instrumentation amp is suitable for applications that require a combination of high performance and precision, low power consumption, and low-voltage operation. Examples include sensor interfaces, signal conditioning, and stationary and portable instrumentation, for the medical, consumer and industrial markets.

In 8-pin MSOP and 3 x 3 mm DFN packages, the device costs $1.52 (5,000).