LT1009IDRG4

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The LT1009IDRG4 is an adjustable precision voltage reference wherein users can set the output voltage between 1.25V and 10.00V. It operates using a dielectrically isolated band gap reference transistor, which works by generating a fixed voltage between the collector and emitter. The output voltage of the TTL1009IDRG4 is then determined by varying the resistance of the voltage divider connected between the output and the reference transistor. This precision voltage reference is used in many applications where stable voltage regulation is needed, including medical, industrial, and consumer electronics.

The working principle of the LT1009IDRG4 is based on the band gap reference transistor. This transistor works by generating a fixed voltage between the collector and emitter, which is proportional to the temperature coefficient of the resistor connected with it. This fixed voltage is then compared to a servo loop that adjusts the current through the voltage divider until the voltage across the divider equals the desired output voltage from the reference transistor. This voltage servo loop is able to maintain the accuracy of the output voltage within 0.1% of its setpoint over the entire temperature range.

The LT1009IDRG4 is ideal for use in applications requiring precise voltage regulation, such as medical and consumer electronics devices. It has low supply current, low output noise, and can operate over a wide temperature range. Furthermore, it has a fast start-up time and is available in an eight-pin SOIC package. This makes the LT1009IDRG4 well-suited for applications in which space is limited.

The LT1009IDRG4 can also be used in power supplies and test and measurement equipment where a precise, regulated output voltage is needed. It is designed to withstand input voltage surges up to 40V, making it suitable for use in industrial applications. Additionally, it has a wide, ±3V to 25V common mode input voltage range, allowing it to be used in AC/DC and DC/DC converters applications.

In summary, the LT1009IDRG4 is an adjustable precision voltage reference that operates using a dielectrically isolated band gap reference transistor. It has low supply current, low output noise, fast start-up time, wide temperature range, and is capable of withstanding input voltage surges. The LT1009IDRG4 is suitable for use in various applications, including medical, industrial, and consumer electronics, and it is available in an eight-pin SOIC package.

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