MAX4268ESD-T

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MAX4268ESD-T is a high-precision, high-stability, wide-bandwidth instrumentation amplifier designed for use with precision transducers, actuators, strain gauges, and load cells. The device has an operational gain range of up to 200 V/V, low input offset voltage, high common-mode rejection ratio, and low input-bias current. It is ideal for applications such as medical instrumentation, bridge sensors, and precision weigh scales.

Instrumentation amplifiers are a type of differential amplifier that can be used for a wide range of applications. These amplifiers are comprised of two input stages, a differential amplifier stage providing high common-mode rejection, and a variable gain stage providing adjustable gain. They can be used for interfacing differential transducers and bridges with operational amplifiers, for driving analog-to-digital converters, for level shifting and buffering, for filtering and amplification, and for controlling current and voltage tunes of devices. Instrumentation amplifiers are not only useful for ADC interfacing, but can be used to reduce the noise of transducers and, in some cases, replace them all together.

The MAX4268ESD-T is based on a hybrid design that combines the precision of integrated-circuit technology with the stability of discrete components. This approach also provides a more cost-effective and efficient solution. The device features a low temperature coefficient and high common-mode rejection ratio of up to 100 dB. The input-offset voltage is typically only 0.5 mV and the input bias current is low and well-controlled. This combination of features makes the device suitable for use in many high-precision applications.

A number of external components are required to configure and implement the MAX4268ESD-T. These include two external capacitors for setting gain, and a pair of resistors for setting the common-mode voltage and consequently the offset voltage of the amplifier section. The device also requires an external current source to bias the inputs.

The MAX4268ESD-T operates on a supply voltage of up to 24 V, and can handle output voltages up to 18 V. The output swing can be adjusted by adjusting the externally supplied current source. The maximum output current of the device is 15 mA, and the device can be operated from a single supply or a split supply. The device is available in an SOT-23 package and is specified for operation over a temperature range of –40°C to +85°C.

The wide bandwidth of the MAX4268ESD-T makes it particularly suitable for precision transducer applications such as weigh scales and bridge sensors. Its low input offset voltage and low-temperature coefficient make it necessary for applications such as medical instrumentation, where a high degree of accuracy is critical. Its high common-mode rejection ratio makes it suitable for applications requiring high rejection of interference signals. In addition, its adjustable gain makes it suitable for level shifting and filtering applications.

The MAX4268ESD-T is an ideal choice for low-power precision instrumentation applications. Its high accuracy, wide bandwidth, low noise, and low input offset voltage make it well-suited for precision transducer applications. Its adjustable gain, high common-mode rejection ratio, and adjustable offset make it suitable for a wide range of applications.

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