LTC6652AHMS8-3.3#TRPBF

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Power Management ICs (PMIC) have a vast selection of products, ranging from voltage references to power converters or regulators and from simple analog components to control systems with advanced capabilities. But, the main purpose of PMICs is to maintain a constant voltage level at a given working point. One such device is the LTC6652AHMS8-3.3#TRPBF, a low power, micropower, low noise voltage reference.

This voltage reference device is a precision, low-power voltage reference with a temperature coefficient of 10 ppm/°C and 0.05% initial accuracy over the -40°C to 85°C temperature range. Its wide operating supply curve from 1.8V to 5.5V makes it suitable for a variety of applications. The device is designed for single-supply and microprocessor-based systems, and its output accuracy is maintained over the full temperature range when VDD is kept within 1% of the indicated supply voltage. It is available in the 8-pin TSSOP package.

The LTC6652AHMS8-3.3#TRPBF is mainly used in industrial and medical applications, such as oscilloscope systems, precision data acquisition modules, quick-settling closed-loop processes, and sensor applications. The reference behaves as an ideal voltage source, in contrast to other types of references which behave as current sources. This device is suitable for precision stabilization or precision current limiting which require low noise output and low power consumption.

The working principle of this device is based on the operation of a pair of bipolar transistors in a Darlington configuration. These transistors operate in constant current mode and control the voltage drop across a voltage divider consisting of two resistors. The output of the divider is compared against an internal reference voltage and the transistors are adjusted to maintain the output voltage at the reference voltage level. The gain of the circuit is determined by the ratio of the two resistors.

The output signal is independent of the temperature temperature and supply voltage changes, thanks to the temperature compensation circuitry built within the device. The temperature is sensed by a PN junction diode, which is connected to the bias generator. This biases the bipolar transistors, and the temperature coefficient of the output voltage is kept at a low level. Thus, the output voltage remains constant despite changes in temperature and supply voltage.

In addition, the LTC6652AHMS8-3.3#TRPBF includes several features to meet the requirements of all sorts of designs it might be applied to. These features include high output voltage accuracy over the full temperature range, low operating current, low output noise and high PSRR, and an operational input voltage ranging from 4.5V to 10V.

The LTC6652AHMS8-3.3#TRPBF is a robust and reliable voltage reference device. With its small size and low power requirement, it is a great choice for many industrial and medical applications where precise voltage control is required. It is designed for both single-supply and microprocessor-based systems, and its output accuracy is maintained over the full temperature range when the supply voltage is within 1% of the indicated supply voltage.

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