AD5819BCBZ-REEL7

Series:	*
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Base Part Number:	AD5819

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AD5819BCBZ-REEL7 Application Field and Working Principle

PMIC (Power Management Integrated Circuit) is an important class of integrated circuit in the electronics industry, responsible for managing and regulating power delivery in a device or system. One kind of PMIC is the voltage references. They produce known voltage levels, regardless of the incoming supply, number of loads, and environmental conditions. The AD5819BCBZ-REEL7, produced by Analog Devices, is a PRECISION BANDGAP VOLTAGE REFERENCE IC which falls into the Voltage Reference category of PMIC.The AD5819BCBZ-REEL7 is specifically designed to be used as the voltage output reference for linear and switching supplies, supporting accurate reference voltages from 0.8V to 4.5V with a supply current comparatively low for a reference of 10uA typical at 1.2V and 17uA maximum at 4.5V. It features a ±0.8mV initial accuracy, as well as a ±1mV/°C change in voltage output over the −40°C to +125°C temperature range. The 5ppm/V change in output voltage over the 0.8V to 2.5V input supply range allows the user to calibrate the device better to their specific application requirements, therefore minimizing the need for external components or providing an optional “on-die” current reference alternative to use with accurate voltage reference.In addition, the device also offers a fast transient response, settling to within 0.2mV of the programmed voltage in less than 200ns. Its minimum operating current also makes it extremely power efficient while operational, while a logic compatible shutdown pin adds further power savings. Its small surface mount packages make it perfect for a wide range of space constrained applications, ranging from systems requiring an on-board 3V reference in a 5V system to precision measurement applications, such as automotive.The basic working principle behind the device is that it connects a band gap voltage reference and an adjustable current source between two conductors. The adjustable current source is combined with a feedback loop that monitors the voltage across the device and corrects it when needed. This ensures that the output voltage will remain stable regardless of the incoming supply, number of load, and environmental conditions.To summarise, the AD5819BCBZ-REEL7 from Analog Devices is a sophisticated PMIC IC of the Voltage Reference category, optimized for precision measurement and power management applications, featuring a ±0.8mV initial accuracy, ±1mV/°C change in voltage output, a 5ppm/V change in output voltage, and extremely low power consumption when operational. Its highly integrated design and wide voltage range makes it applicable to a wide range of applications, while its fast transient response ensures an accurate and reliable performance.

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