TS821IZT

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The TS821IZT Voltage Reference is a highly precise and accurate reference device from Texas Instruments. It is specifically designed to provide precise, regulated voltages for a wide range of embedded control and measurement applications. The TS821IZT is ideal for applications such as voltage reference for calibrating embedded microchips, power supplies, motor control, precision analog circuits, and protection circuits. It is commonly used in automotive and motor control applications, due to its high accuracy and precise regulation capabilities.

The TS821IZT is an instrumentation amplifier based precision voltage reference which offers a precise, stable DC controlled voltage in a tiny 6-pin TSOT-23 package. It features an offset voltage of 25mV maximum, a programmable voltage range of 0.8V to 4.75V and provides a 1ppm/°C temperature stability. It also features an adjustable current limit of 650mA and a programmable operating current limit range of 10mA to 65mA. The TS821IZT is protected by over-temperature shutdown, over-current, reverse-polarity and over-voltage protection.

In terms of operation and application, the TS821IZT is designed with two main functions: voltage regulation and current regulation. Voltage regulation is the capability of the device to regulate an output voltage to a precise level regardless of any changes in input voltage or current, while current regulation prevents additional current from entering an application and causing unwanted effects, like circuit damage. The TS821IZT is able to accomplish both of these tasks with its unique capabilities.

The TS821IZT employs a three-stage voltage regulation process to ensure accuracy and stability. The first stage starts with a reference precision, which is a stable low-noise voltage source that serves as the foundation for the output voltage range. This reference voltage is typically set to 1.2V. The second stage is composed of an instrumentation amplifier, which is then followed by the third stage: a feedback and adjustment loop. The feedback loop works to match the output voltage precisely with the desired output voltage and make the necessary corrections when any voltage discrepancies are detected.

The TS821IZT is equipped with a current limiting control and an adjustable current limit range of 10mA to 65mA, allowing the user to set the device’s current limit according to the specific application requirements. In addition, it is also protected against over-temperature shutdown, over-current, reverse-polarity and over-voltage.

In conclusion, the TS821IZT is an ideal precision voltage reference for a wide range of applications due to its extremely precise voltage regulation, low offset voltage, and adjustable current limit range. This tiny 6-pin TSOT-23 package provides users with an efficient and reliable way to provide their embedded systems with a precise and accurate voltage reference.

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