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The LT1485CS8 is a precision dual operational amplifier manufactured by LT, now part of Analog Devices. It is designed to offer a combination of low noise, low power consumption, and high accuracy, which are often difficult to achieve simultaneously in analog circuit design.
This operational amplifier features a bipolar input stage with laser trimming for excellent DC precision. It boasts a typical input offset voltage of 150μV and a temperature drift of only 1.5μV/°C. The device achieves a gain bandwidth product of 2.5MHz while consuming a low quiescent current of 1.25mA per channel. Its power supply rejection ratio (PSRR) is rated at 100μV/V, minimizing the impact of power supply fluctuations.
The LT1485CS8 operates over a wide temperature range of -40°C to 85°C, making it well-suited for industrial environments. It supports both single (+5V to +36V) and dual (±2.5V to ±18V) power supplies. A notable feature is its robust drive capability, able to drive a 600Ω load to ±10V.
It is commonly used in industrial sensor conditioning circuits for amplifying weak signals from sources like strain gauges and RTDs. Other applications include medical equipment for bio-signal processing and data acquisition systems for building active filters and buffers. The device is supplied in a SOIC-8 package.
The LT1485CS8 is a precision dual operational amplifier that combines low noise, low power consumption, and high accuracy. It features a typical input offset voltage of 150μV, a temperature drift of 1.5μV/°C, and a gain bandwidth product of 2.5MHz.
The LT1485CS8 operates within a temperature range of -40°C to 85°C.
The LT1485CS8 can operate with a single supply voltage from +5V to +36V or with a dual supply voltage from ±2.5V to ±18V.
The LT1485CS8 is supplied in a SOIC-8 package.
While it can function as a replacement, it is not economical for general applications. The LT1485CS8's advantages in noise and precision are best utilized in demanding applications where the cost of an LM358 would be insufficient.
Ensure the input signal stays within the supply range and consider a biasing circuit if necessary. The output swing will be limited, typically not reaching within 1.5V of the supply rails, so design with sufficient margin.