LT6656BCDC-4.096#TRPBF

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PMIC (Power Management Integrated Circuit) is comprised of a range of power management devices, including ‘Voltage Reference’ which introduces LT6656BCDC-4.096#TRPBF, a linear integrated circuit designed to provide the very accurate voltage references. It aligns the voltages used in the circuits which is measured with voltage comparators to accurately detect lower and higher voltage levels on the input.

The LT6656BCDC-4.096#TRPBF is able to operate over a wide supply range of 3V to 30V. It features an on-chip six thousandths percentage accuracy adjustable reference and temperature coefficients of less than three ten thousandths per °C. CD max limit is set to 50µA, while having a PSRR (Power Supply Rejection Ratio) as high as 80dB. The device comes in tiny 10-lead (2mm x 3mm) DFN package with military grade temperature range of -55°C to +125°C specified.

The circuit of LT6656BCDC-4.096#TRPBF may be put into two parts: an adjustable voltage reference and voltage comparator. The voltage reference, simply put, is a circuit with a voltage output that is fixed, and is used to compare the voltages from other sources with the reference. It is like a high accuracy voltage source. This adjustable reference is integrated onto the same chip and allows the user to adjust its output voltage from 150mV up to 7V to 10V according to their application demands. It also features input voltage range of 3V to 30V for the adjustable reference, with a line regulation of 0.7mV/V and load regulation of 1mV/mA.

The adjustable reference topology selects high performance devices which are capable of ultra-high accuracy, low temperature-drift, high line regulation and high PSRR combined in one package along with a reference comparator. It offers temperature coefficient of 2µV/°C, a long-term stability of 0.1ppm/year, and a PSRR of up to 80dB at 1kHz. It also provides fast recovery from output overshoot/undershoot (tT, max) conditioning.

The voltage comparator is the other part of the LT6656BCDC-4.096#TRPBF which compares the input voltage, with the reference voltage. When the input voltage at the comparator reaches the same voltage on the reference, the output of the comparator ‘switches’. It is useful for tasks such as level triggering, comparator timing and for setting upper and lower voltage trip points. The comparator has rail-to-rail output swing (VOS min/max), fast start up time (tS), over-voltage and transient protection, which are all readily available and adjustable.

The LT6656BCDC-4.096#TRPBF is widely used in telecom and industrial application fields. It is suitable for voltage monitoring, power supply sequencing, power monitoring, and capacitor charge/discharge control applications. It is also used in a range of general data acquisition and instrumentation applications where high voltage accuracy, fast start up times and low power consumption are required. The low voltage drop and low power consumption makes it an ideal solution for powering field telemetry systems and portable applications.

This device is equipped with high PSRR, fast start-up time, low temperature drift and low power consumption features allowing its application in such fields such as portable instrumentation, field equipment, medical equipment, metering applications, and communication systems. The LT6656BCDC-4.096#TRPBF is perfectly suited as a voltage reference device foraccurate voltage sensing of both higher and lower voltage levels, suitable for use in applications from 150mV to 10V.

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