ZXRE1004ER

PMICs, or Power Management Integrated Circuit, are electrical components used to control the power of a given system, ranging from industrial motor control to sophisticated computing systems. Voltage References are a type of Power Management Integrated Circuit (PMIC) that can regulate the voltage of many customer designs or applications, making them a critical element of many power management applications. The ZXRE1004ER is a 2-channel micropower voltage reference that provides micropower precision regulation through a simple external resistor divider. This document will discuss the application field and working principle of the ZXRE1004ER.

The ZXRE1004ER is designed for micropower precision voltage references, allowing for linear voltage scaling with a minimal number of components. The device is designed for battery operated, surgical implement and electrical powerline monitoring applications where limited power consumption is critical. It is also suitable for general purpose voltage reference applications, such as precision voltage level shifting, voltage monitoring, and regulation. The device can regulate an input voltage from 0 V to 6 V through the use of a resistor divider, providing two channels of reference voltage outputs.

The ZXRE1004ER is based on a bandgap reference topology controlled by a sophisticated CMOS temperature Compensation and correction circuitry. This ensures operating stability over a wide temperature range. The reference voltage is set with a precision external resistor divider network, which is connected to the REF+ and REF− pins. The resulting Output Voltage determines the maximum supply voltage for the device, with the maximum input voltage supporting the device\'s required output voltage. The REF_SP pin is the voltage divided output of the external resistor divider, and is used to set the output reference of the regulator. The ZXRE1004ER also provides two control pins: SHDN and TSD, which can be used to control power flow, reduce power consumption, and protect the device from overvoltage conditions.

Once properly configured, the external components are used to create the desired voltage reference range. This is done by connecting a resistor divider between the VDD and GND pins, while setting the midpoint of the resistor divider to the REF_SP and REF_+, then connecting the voltage source to the VDD pin. Once powered, the internal control circuitry of the ZXRE1004ER will regulate the output voltage to the desired voltage reference level, as set by the value of the external resistor divider.

In addition to its application field and working principle, the ZXRE1004ER also provides several other features to help ensure robust and reliable operation. This includes an internal overtemperature protection circuit to protect the voltage reference from overheating, as well as an access limited power-on reset circuit for resetting the chip when a power-off condition is detected. It also features ESD protection for its pins, as well as a low operating current, making it suitable for environments with limited power.

In conclusion, the ZXRE1004ER is a 2-channel, micropower voltage reference that can provide precision voltage regulation with minimal external components. Its two control pins, SHDN and TSD give users flexibility in controlling power flow, while its internal protection circuits ensure robust and reliable operation. The device is an ideal solution for battery operated, surgical implement, and electrical powerline monitoring applications, where limited power consumption is essential.