Texas Instruments

LT1009CPW

LT1009CPW Description

The LT1009CPW is a precision shunt voltage reference IC designed by Texas Instruments, offering a fixed output voltage of 2.5V with a tolerance of ±0.4%. This device is part of the Power Management Integrated Circuits (PMIC) category and is housed in an 8-lead TSSOP package. Despite being marked as obsolete, the LT1009CPW remains a reliable choice for applications requiring a stable and precise voltage reference.

LT1009CPW Features

• Fixed Output Voltage: The LT1009CPW provides a stable 2.5V output voltage, making it suitable for applications where a fixed reference voltage is required.
• Low Temperature Coefficient: With a temperature coefficient of 25ppm/°C, the LT1009CPW ensures minimal drift in output voltage over a wide temperature range, enhancing its reliability in various operating conditions.
• High Output Current: The device can support an output current of up to 10 mA, which is significantly higher than many similar shunt voltage references, making it suitable for applications requiring higher load currents.
• Low Cathode Current: The LT1009CPW operates with a cathode current of only 400 µA, minimizing power consumption and heat generation.
• Surface Mount Technology: The LT1009CPW is designed for surface mount applications, facilitating easy integration into compact and high-density PCB designs.
• Compliance and Safety: The device is REACH unaffected and ROHS3 compliant, ensuring it meets stringent environmental and safety standards. Additionally, it has a Moisture Sensitivity Level (MSL) of 1, making it suitable for unlimited exposure to standard manufacturing environments.
• Wide Operating Temperature Range: The LT1009CPW operates reliably within a temperature range of 0°C to 70°C (TA), making it suitable for a wide range of industrial and consumer applications.

LT1009CPW Applications

The LT1009CPW is ideal for applications requiring a precise and stable voltage reference, such as:

• Analog-to-Digital Converters (ADCs): Provides a stable reference voltage for accurate analog signal conversion.
• Digital-to-Analog Converters (DACs): Ensures precise output voltage levels for digital signal conversion.
• Power Supply Circuits: Acts as a reference for voltage regulators and power management circuits.
• Instrumentation and Measurement Equipment: Offers a reliable reference for precision measurement devices.
• Consumer Electronics: Suitable for applications where a stable voltage reference is needed for accurate operation.

Conclusion of LT1009CPW

The LT1009CPW from Texas Instruments is a robust and precise shunt voltage reference IC that offers several unique advantages over similar models. Its combination of a stable 2.5V output voltage, low temperature coefficient, and high output current capability make it an excellent choice for a variety of applications. Despite its obsolete status, the LT1090CPW remains a reliable and compliant component, suitable for both existing and new designs where a precise voltage reference is required.