LT1461CIS8-4#PBF

Noise - 0.1Hz to 10Hz:	8ppmp-p
Base Part Number:	LT1461
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 - Supply:	70µA
Voltage - Input:	4.596 V ~ 20 V
Noise - 10Hz to 10kHz:	9.6ppmrms
Series:	--
Temperature Coefficient:	12ppm/°C
Tolerance:	±0.08%
Current - Output:	100mA
Voltage - Output (Min/Fixed):	4.096V
Output Type:	Fixed
Reference Type:	Series
Part Status:	Active
Packaging:	Tube

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The LT1461CIS8-4#PBF is a precision voltage reference device that falls within the PMIC - Voltage Reference category. This device offers excellent accuracy, low drift and low temperature coefficient, as well as low power dissipation and low noise. The IC also is designed with an open-drain reference output, making it ideal for applications that require an adjustable reference voltage. This article covers the application field and working principle of the LT1461CIS8-4#PBF device.Application FieldThe LT1461CIS8-4#PBF device is typically used in portable, battery-powered instruments, industrial products, and any other system application requiring a stable, precise reference voltage. This includes applications such as: portable battery-powered gauges, transducers, and meters; instrumentation amplifiers and signal-conditioning ICs; switching power supplies; and microcontroller and FPGA based systems.Working PrincipleThe LT1461CIS8-4#PBF operates by comparing the voltage across an internal voltage reference, to an adjustable reference voltage. This comparison is then amplified and applied to the internal reference element, creating a precisely regulated voltage. This voltage is then compared against a precision resistor in order to generate a voltage signal that is routed to the reference output terminal. This reference output voltage is regulated to within 0.2% initial accuracy of the set value and remains constant over wide adjustment and temperature ranges.The LT1461CIS8-4#PBF device is designed to be adjusted and adjusted quickly by a voltage applied to its ADJ pin, and operates as a two-terminal integrated circuit with a single external resistor. The device also features an On/Off control pin, which allows for high-current operation in Off state and for high-side switching applications. The device also offers low-current operation with the On/Off control pin in the On state, which is ideal for boosting reference voltage accuracy under low-current applications.The internal circuitry of the LT1461CIS8-4#PBF device consists of a “floating single transistor” regulator, a low-noise reference element, and a low-noise external resistor network that provides the reference voltage. The device has a maximum output of 6V, a minimum output of 0.8V, and a typical output of 4.096V.The LT1461CIS8-4#PBF device offers an excellent cost/performance ratio, and its precision, stability, and low power consumption are ideal for any system requiring an adjustable, stable and precise reference voltage. Its open-drain reference output makes it ideal for applications that require an adjustable reference voltage.

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