MAX9028EBT+T

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Linear-Comparators are widely used in multiple applications to compare analog signals like current and voltage in order to detect maximum and minimum values. The MAX9028EBT+T is a high-speed, precision linear-comparator built on a BiCMOS process. It is specifically designed to provide low-power, low-voltage operation, high-speed response and low-noise operation.

The MAX9028EBT+T architecture is divided into three sections: the lower voltage (LV) section, the high voltage (HV) section, and the switch section. The LV section is comprised of a low-voltage transconductance amplifier which is responsible for providing the voltage offset and gain required by the form factor curve of the MAX9028EBT+T, creating the linear-comparator\'s input reference voltages V_REF1 and V_REF2. The HV section is composed of a high voltage fractional threshold voltage comparator, and the switch section is composed of a low resistance MOSFET switch. The HV section and the switch section are located on the same chip, and are both powered by the same supply pin.

The MAX9028EBT+T normally operates from a single 5V supply, but can also operate with a dual supply. Its low-voltage amplifier utilizes a low-voltage cmos differential pair which results in a differential gain of approximately 1. The maximum power supply voltage is 3.6V due to the built-in protection diodes which limit the input voltage to the amplifier inputs. In the common-mode voltage range of 0V to 3.6V, the MAX9028EBT+T offers better than 0.1% accuracy and 0.2% linearity.

The HV section of the MAX9028EBT+T functions as a high-speed linear-comparator with a very low input offset voltage and a wide hysteresis window. The voltage level at which a comparator trips is referred to as the trip point, and can be adjusted to a level between ±1V. The comparator has a fast response time and a low noise floor. It is capable of operating at sample rates of up to 500KHz and a supply voltage from 2.7V to 5.5V.

The switch section is designed for low on-resistance operation (R_ON Typical of 0.7Ω). The switch is controlled with an enable pin to open and close the switch. When the switch is enabled, the output is connected to the HV section of the device. The output of the MAX9028EBT+T is a TTL/CMOS-compatible signal which is pulled down to low voltage when the enable pin is inactive.

The MAX9028EBT+T is ideal for applications such as sample and hold, analog-to-digital conversion, sample-and-hold amplifiers, and low-voltage, low-power comparators. It can also be used in instrumentation applications, data acquisition systems and signal processing circuits.

In summary, the MAX9028EBT+T is a high performance, low-power linear-comparator that provides excellent accuracy and low noise operation. Its wide input voltage range and low on-resistance make it an ideal choice for applications requiring high speed, low power, and low voltage operation.

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