ADR3430ARJZ-R2

Overview

The ADR3430ARJZ-R2 is a micropower, high-accuracy voltage reference manufactured by Analog Devices Inc. It provides a fixed output voltage of 3.0 V with an initial accuracy of ±0.1%. The device operates within an input voltage range of 3.2 V to 5.5 V and features a maximum temperature coefficient of 8 ppm/°C over the industrial temperature range of −40°C to +125°C. It draws a maximum quiescent current of 100 μA and supports an output current capacity of +10 mA sourcing and −3 mA sinking. The component is housed in a compact 6-lead SOT-23 package.

Feature Summary

• Utilizes proprietary DigiTrim technology for digital trimming of output voltage and temperature coefficient during final assembly to ensure high precision.
• Features low output voltage hysteresis and low long-term drift to improve stability and system reliability under varying thermal conditions.
• Includes an enable pin that allows for shutdown mode with reduced current consumption, facilitating power management in battery-operated applications.

Applications

• Precision data acquisition systems
• Industrial instrumentation
• Medical devices
• Battery-powered devices

Procurement Notes

Verify the specific ordering suffix R2 corresponds to the required tape and reel packaging configuration before procurement. Confirm that the input voltage supply meets the minimum requirement of 3.2 V for proper regulation. Ensure the load current does not exceed the specified sourcing and sinking limits to maintain the guaranteed ±0.1% accuracy across the full operating temperature range.

Selection Notes

Select this component when a stable 3.0 V reference is required in space-constrained designs utilizing the SOT-23 package. It is suitable for applications demanding low power consumption due to its micropower characteristics. Consider the input voltage range constraints compared to other variants in the series if the supply voltage varies significantly near the lower limit.

Part Context

This part belongs to the ADR34xx family of CMOS voltage references from Analog Devices. The family includes various fixed output voltages such as 1.2 V, 2.048 V, and 5.0 V. All members share similar architectural features, including low noise, low dropout voltage, and the use of DigiTrim technology for calibration.

Replacement Considerations

Other models in the ADR34xx series may serve as substitutes if different output voltages are acceptable. Verify pin compatibility and electrical specifications against the target application requirements before substitution.

FAQ

How does the ADR3430 achieve high accuracy?

It uses Analog Devices' proprietary DigiTrim technology to digitally trim the output voltage and temperature coefficient during final assembly.

What is the function of the ENABLE pin?

The ENABLE pin controls the operation state; pulling it below 0.7 V activates shutdown mode, reducing quiescent current to 5 μA.