Texas Instruments Unveils Ultra-Sensitive Operational Amplifier for Low- and High-Voltage Supply Applications

Texas Instruments has unveiled a zero-drift, 36-V operational amplifier called the OPA2188, which enhances sensitivity, precision and power for low- and high-voltage supply applications demanding ultra-high accuracy, such as flow meters, medical instrumentation, electronic weigh scales, and test and measurement equipment.

The dual-channel OPA2188 offers 60% enhancement in the initial offset voltage, two times the bandwidth at the same amount of power consumption and 4x enhancement in the offset voltage drift. Its zero drift design of 0.03 µV/°C decreases the requirement of future system calibration and its initial offset voltage of 25 µV allows superior-resolution sensor metrology.

The operational amplifier offers a bandwidth of 2 MHz, while using merely 475 µA of quiescent current. These features allow it to offer ultra-high accuracy levels in medical applications. It offers a minimum sound of 8.8 nV/rtHz for high system accuracy. Its input common mode ranges between negative rail and 1.5 V of the positive rail, which eliminates additional circuitry and allows 5 V single-supply process.

Texas Instruments also supplies various tools and support to accelerate development using the OPA2188. The company offers a universal evaluation module that facilitates assessment by enabling the construction of various circuits easily and rapidly and a SPICE model and reference design in TINA-TI 9.1, an analog simulation program based on SPICE. It also provides software for calculation, application and analysis such as FilterPro, Analog Filter Designer and calculators for wavelength/frequency, decibel and operational amplifier gain stage.

Source: http://www.ti.com

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