MAX6145EUR+T

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The MAX6145EUR+T is an ultra-high precision, micro-power, low-dropout (LDO) voltage reference specifically designed for low-voltage and high-precision microprocessor (µP) and digital signal processor (DSP) applications. This voltage reference combines a CMOS output stage with a High-Voltage Fast-Tracking (HVFT) differential amplifier to achieve high efficiency, and is designed to be used as a replacement for both simple and complex voltage reference circuits. This article explores the application field and working principle of the MAX6145EUR+T.

Application Field

The MAX6145EUR+T is ideal for a variety of microprocessor and digital signal processor applications, including telecommunication systems, power supplies, and PC motherboard designs. It is also particularly well-suited for use in handheld devices like digital cameras, media players, and cellular phones. This voltage reference is capable of providing a precision voltage reference with a wide operating voltage range, allowing it to be used in complex circuits that require stable voltage references across a range of input voltages. Additionally, the MAX6145EUR+T offers low power consumption, making it a suitable choice for handheld applications where power management is of utmost importance.

Working Principle

The MAX6145EUR+T voltage reference consists of two parts: a differential amplifier stage, and an output buffer stage. The differential amplifier stage consists of two p-channel MOSFETs that are connected in series. Input voltages are applied to each gate, and the output of the amplifier is taken from the junction between the two transistors. The gate voltage of the second MOSFET is kept at a fixed voltage relative to that of the first by a voltage divider network connected between the gates, and the amplifier output maintains a constant ratio between the two gate voltages. This allows the output voltage to remain constant despite variations in the input voltage.

The output buffer stage consists of several CMOS gates that act as buffers, preventing the internal amplifier output from varying with the changing load conditions. To further reduce power consumption, the MAX6145EUR+T employs a High-Voltage Fast-Tracking CMOS output stage that provides stable output voltages even with low input voltages. The fast-tracking output stage also helps to reduce power consumption as it enables the output voltage to be kept constant with small changes in input voltage, reducing the need for additional circuitry to regulate the output voltage.

The MAX6145EUR+T is designed for superior accuracy, low drop-out voltage, and low power consumption. It is an excellent choice for precision applications due to its high accuracy and low power consumption, and its wide input voltage range makes it suitable for complex circuits that require a stable voltage reference across a range of input voltages. It is also specifically designed to maximize power efficiency in handheld applications, making it a suitable choice for handheld devices that require a stable voltage reference.

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