MAX923ESA+

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The MAX923ESA+ is a fast, high-accuracy, low-power rail-to-rail Rail-to-Rail comparator. It is a highly advanced linear device specifically designed for use in a wide range of smart electrical applications including power management and sensing, low-power interface, and data acquisition and interface. The MAX923ESA+ provides a highly accurate onchip amplifier with an input offset and input bias currents which are far lower than those of competitive devices. The device also provides a rail-to-rail output stage that ensures maximum dynamic range of the comparator, enabling it to reach full scale voltage swings and deliver higher precision than competitive models.

The MAX923ESA+ main application field is in power management and sensing systems such as over-voltage, under-voltage, over-current, and over-temperature, sensing and protection systems. The device is designed to sense very small changes in voltage, current or temperature with great accuracy, offering users a high precision and low-power rail-to-rail comparator solution.

The MAX923ESA+ has the advantage of having an Input Offset Voltage of 0.85mV and a maximum Input Bias Current of 1.2 nA, making it the most accurate comparator device available in the market. The device also has a very low Quiescent Supply Current of 0.9mA, making it ideal for products where power consumption is at a premium.

The working principle of the MAX923ESA+ is as follows: when a signal is applied to the device\'s input pins, the input differential amplifier senses the signal and amplifies it to a level that can be properly compared to the reference voltage. The amplified signal is then compared to the reference voltage, producing a logic ‘high’ (+VCC) or logic ‘low’ (-VCC) output. The advantage of the MAX923ESA+ is that the amplified signal is even more accurate than the reference voltage, ensuring that the comparator always operates within the expected accuracy range.

The MAX923ESA+ offers a high degree of performance and integration to customers and brings excellent functionality to many applications where low power consumption, accuracy and high bandwidth are of paramount importance. Its compact size, ease of use and wide range of features make it an ideal choice for product designers. Its low power requirements and rail-to-rail output makes it a great choice for battery operated systems such as cell phones and PDA’s. The device is also an excellent fit for industrial applications where a great deal of data needs to be acquired from a limited number of inputs.

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