Low-Power, Auto-Zero Op Amps
Portable Design News, Monday July 07, 2008
Microchip has announced that is sampling the HTUMCP6V01/2/3UTH (MCP6V0X) auto-zero operational amplifiers (op amps). The low-power op amps feature a unique self-correcting architecture that enables ultra-high precision, with an input offset voltage of just 2 µV maximum. They also feature high common-mode rejection, rail-to-rail input/output and low quiescent current; making them ideal for portable, battery-powered instrumentation devices, such as those used in the industrial and medical markets.
With their low operating-voltage range of 1.8V to 5.5V and low typical quiescent current of just 300 µA, the MCP6V0X op amps can run off two 1.5V cells with full battery utilization. The devices feature a self-correcting architecture that results in fewer errors, especially at higher gains. Additionally, their rail-to-rail input/output structure enables greater dynamic range. The combined result of these features is better system performance at all operating voltages.
Applications requiring low power consumption, low-voltage operation, ultra high precision and low drift can benefit from the performance and features offered by the MCP6V0X op amps. Examples include battery-powered devices and instrumentation used in medical applications (e.g. sensor calibration for defibrillators and CT scanners); as well as industrial applications (e.g. high-precision temperature sensing and DC offset correction).
The MCP6V0X op amps are available for sampling and purchase today. All of the new op amps are available in 8-pin SOIC packages, with the MCP6V02 also offered in a 4 mm x 4 mm DFN package. The MCP6V01 is priced at $1.26 each in 10,000-unit quantities; the MCP6V02 at $1.92 each in 10,000-unit quantities; and the MCP6V03 at $1.31 each in 10,000-unit quantities.
Microchip Technology Inc., Chandler, AZ (480) 792-7200 [www.microchip.com]
