TL4051A12QDCKR

Overview

The TL4051A12QDCKR is a precision micropower shunt voltage reference from Texas Instruments, housed in a compact SC-70-5 surface-mount package. It features an adjustable output voltage range of 1.212V to 10V, set via external resistors. The device offers high accuracy with an initial tolerance of ±0.1% and a low temperature coefficient of ±50 ppm/°C. It operates reliably across an extended industrial temperature range of -40°C to +125°C. The component supports a maximum output current of 12 mA and requires a minimum operating current of 65 µA. It maintains stability under all capacitive load conditions without requiring external output capacitors.

Feature Summary

• Provides stable reference voltage with adjustable output capability using external resistor dividers
• Ensures high precision through tight initial tolerance and low temperature drift characteristics
• Operates efficiently with minimal quiescent current consumption for battery-powered applications
• Maintains stability across varying capacitive loads without the need for additional output components

Applications

• Data acquisition systems requiring precise voltage references
• Portable and battery-powered instrumentation devices
• Process control loops and monitoring circuits
• Automotive electronic systems demanding extended temperature reliability

Procurement Notes

Verify the specific suffix 'Q' indicates automotive qualification and 'A' denotes the 0.1% tolerance grade. Confirm the 'DCKR' suffix corresponds to the SC-70-5 package and tape-and-reel delivery format. Ensure the part number matches the exact manufacturer designation to avoid confusion with fixed-output variants or different tolerance grades within the same family.

Selection Notes

Select this component when an adjustable voltage reference is required in a space-constrained design. The SC-70-5 package offers a small footprint suitable for dense PCB layouts. Choose this specific grade if the application demands high accuracy (±0.1%) and operation at elevated temperatures up to 125°C. Consider the micropower nature of the device for energy-efficient systems where standby current must be minimized.

Part Context

This part belongs to the TL4051 family of precision micropower shunt voltage references. The family includes fixed-output versions and various tolerance grades. The TL4051 series is designed to replace bulkier reference solutions, offering comparable performance in a significantly smaller package. It serves as a critical component for establishing accurate voltage levels in analog signal chains and power management circuits.

Replacement Considerations

Compatible substitutes include other TL4051 variants with matching tolerance and package, such as TL4051AQDCKT. Verify that any replacement maintains the SC-70-5 form factor and the 0.1% accuracy class. Ensure the alternative part supports the same adjustable voltage range and extended temperature specifications required by the original design.