LT1634BIS8-1.25#TRPBF

Noise - 0.1Hz to 10Hz:	10µVp-p
Base Part Number:	LT1634
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Current - Cathode:	7µA
Current - Supply:	--
Voltage - Input:	--
Noise - 10Hz to 10kHz:	--
Series:	--
Temperature Coefficient:	25ppm/°C
Tolerance:	±0.05%
Current - Output:	100mA
Voltage - Output (Min/Fixed):	1.25V
Output Type:	Fixed
Reference Type:	Shunt
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LT1634BIS8-1.25#TRPBF Application Field and Working PrincipleThe LT1634BIS8-1.25#TRPBF is a precision voltage reference from Linear Technology Corporation. It is from the Power Management Integrated Circuits (PMIC) Voltage Reference family. The reference is rated for 8 volts.The device can be used for a variety of applications including voltage regulation, precise level shifting and precise voltage sensing, precision measuring instrumentation and reference voltages for precise analog-to-digital converters.The LT1634BIS8-1.25#TRPBF implements a monolithic buffer amplifier as a precise voltage reference for precision analog/digital converters. The device offers a 1.25V reference voltage with a temperature coefficient of 5 ppm/°C and a 0.1% initial accuracy.The LT1634BIS8-1.25#TRPBF contains both the voltage reference and the buffer amplifier in a single monolithic IC. The voltage reference is accurately trimmed, while the buffer IC amplifies the reference voltage while suppressing both noise and output impedance. This helps to ensure that the precision and accuracy of the reference performance is not compromised.The device also includes an output buffer amplifier stage, which further reduces output impedance and increases the load driving capability. The buffer amplifier also provides additional gain to the reference source.The LT1634BIS8-1.25#TRPBF also includes a number of other features designed to improve the performance of the voltage reference. These include an ultra low input bias current, a high temperature stability and an auto-zero architecture.The LT1634BIS8-1.25#TRPBF uses an internal voltage reference and an amplifier to supply the output voltage. The voltage reference is a temperature-stable reference diode and is double level-shifted twice, which helps to achieve a temperature coefficient of 5 ppm/°C and a 0.1% initial accuracy.The internal amplifier then develops a buffered and amplified output voltage that can provide a maximum output current of 8mA and is designed to be able to drive capacitive loads of up to 100µF without oscillation.The low impedance output buffer amplifier helps to ensure that the performance of the voltage reference is not degraded due to impedance mismatch. This also helps to ensure that the output voltage is not affected by the load capacitance.The device also offers an optional shutdown function, which can be used to reduce power consumption when the reference is not required. This is enabled by an open drain shutdown pin, which can be driven by an external logic signal or a voltage source, depending on the application.In summary, the LT1634BIS8-1.25#TRPBF is a precision voltage reference device from Linear Technology Corporation. It is from the Power Management Integrated Circuits (PMIC) voltage reference family and rated for 8 volts. It includes an accurately trimmed voltage reference, an output buffer amplifier stage and an auto-zero architecture, to help ensure precision and accuracy of the reference performance. It also includes an optional shutdown function and can be used in a variety of applications including voltage regulation, precision level shifting and precision voltage sensing, precision measuring instrumentation and reference voltages for precise analog-to-digital converters.

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