MAX6021BEUR+T

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The MAX6021BEUR+T are precision, low-power, micropower shunt voltage references (VREFs) offering exceptional accuracy. These VREFs provide excellent temperature stability and low noise. The devices are available in two fixed output-voltage options, each featuring a voltage accuracy of ±0.01% and a maximum output of 5 V. Internal short-circuit and thermal-overload protection ensure reliable operation. Low quiescent current (typically 4 µA) and low-dropout (LDO) regulators are ideal for military and industrial applications. This device is housed in SOT-23 and MSOP-8 packages.

The MAX6021BEUR+T\'s application field include a variety of industrial, telecom and data processing operations. It serves as a key component in the implementation of precision level-shifting and linear-regulator circuits. The device provides a highly accurate reference voltage for comparators, A/D converters and D/A converters. SUPERVLOS® circuits that are used in telecom and datacom systems also require precision references, and the MAX6021BEUR+T works well in this regard.

The device is based on a two-terminal bandgap reference realized through bipolar transistors and the use of temperature-compensating circuit topology. It is able to deliver a stable output voltage of 5 V with an accuracy of ±0.01%, and a temperature-coefficient of 5 ppm/°C maximum over the specified operating temperature range of 0 to 70°C. The MAX6021BEUR+T also offers a low output-impedance of typically 0.3 mΩ, and an input-bias current of typically 6 nA.

The device offers superior temperature stability and long-term drift, and its load regulation characteristics ensure that the voltage stays reasonably constant with varying load current. The supply current is typically 4 µA and can be as high as 12 µA with a maximum output-voltage ripple of 0.8 mV. When coupled with LDOs, the device provides excellent transient-response time and load-regulation performance.

The precision VREFs of the MAX6021BEUR+T family operates over a voltage range of 2.25 V to 7.25 V, making it suitable for both 5 V and 3.3 V applications. Output programming may be accomplished by an external resistor-divider network, and its input currents are low enough to be powered directly by either a battery or ohmic-series resistor. This device also features an internal 0.1 µA shutdown current, allowing it to “sleep” when not in use.

In conclusion, the MAX6021BEUR+T are high-accuracy, low-power, micropower shunt voltage references that offer superior temperature stability and low noise. These VREFs can be used in a variety of industrial, telecom and data-processing operations where precision level-shifting and linear-regulator circuits are required. Its features, such as low supply current, low output-impedance, a maximum output-voltage ripple, and low input-bias currents make it a suitable choice for military and industrial applications.

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