LTC6655BHMS8-2.048#PBF

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PMIC - Voltage Reference

The LTC6655BHMS8-2.048#PBF is an adjustable low noise voltage reference from the family of Precision Micropower Voltage References from Linear Technology. It is mainly used in the fields of high frequency and precision active circuit noise suppression, portable data storage, computing, battery-powered instrumentation and medical instrumentation.

Applications and Features

LTC6655BHMS8-2.048#PBF is mainly used in applications where wide accuracy requirements, low noise and low power have to be met. In addition, it is well suited for noisy environments and has attractive features such as very low reference noise (7.5uA), low quiescent current output (50uA) and ADC reference buffers.

• Wide accuracy and stability
• Low power and low noise
• High dynamic range: 0.4V to 4.096V
• Temperature, aging and overload proof

Working Principle

The LTC6655BHMS8-2.048#PBF is an adjustable low noise voltage reference based on a low noise shunt regulator. The principle of a shunt regulator is that current is drawn through a low resistance path which is placed in series with the output. Thus, any changes in the input voltage are matched by changes in the current drawn, so the output voltage remains constant. The LTC6655BHMS8-2.048#PBF has an adjustable voltage reference, allowing for precise regulation of the output voltage. It is temperature, aging and overload proof, with a temperature range of -40 to +125°C.

The main components of the LTC6655BHMS8-2.048#PBF is the external voltage divider, the shunting transistor, and two separate reference voltages, one for controlling the output voltage stability and the other for controlling the output current variation. The external voltage divider is used to control the reference voltage, and the shunt transistor is used to shunt the output current. The two reference voltages are compared and the difference is used to adjust the output voltage. In this way, the LTC6655BHMS8-2.048#PFB maintains the desired output voltage, while the reference voltage remains stable.

Conclusion

The LTC6655BHMS8-2.048#PBF is an adjustable low noise voltage reference device capable of providing high accuracy and stability. It is ideal for low noise and low power applications in noisy environments and its temperature range is from -40 to +125°C. The main components of the device are an external voltage divider, a shunt transistor, and two separate reference voltages. The principle of shunt regulation is used to maintain the output voltage at a desired value, while the reference voltage is constant.

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