ADR3450ARJZ-R7

Overview

The ADR3450ARJZ-R7 is a micropower, high-accuracy CMOS voltage reference providing a fixed 5.0 V output. It features ±0.1% initial accuracy and a maximum temperature coefficient of 8 ppm/°C over the −40°C to +125°C range. The device operates with a quiescent current of 100 μA maximum and supports an output current of +10 mA source and −3 mA sink. Input voltage ranges from 5.2 V to 5.5 V, with a dropout voltage of 250 mV at 2 mA.

Feature Summary

• Utilizes proprietary DigiTrim technology for digital trimming of output voltage and temperature coefficient during final assembly.
• Features low output voltage hysteresis and low long-term drift to improve stability and system reliability.
• Includes an enable pin that allows for shutdown mode with reduced current consumption.

Applications

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

Procurement Notes

Verify the specific ordering suffix matches the required packaging configuration, as variants exist for reel, cut tape, or other formats. Confirm the component is sourced directly from Analog Devices or authorized distributors to ensure authenticity. Check for any recent product change notices regarding specifications or manufacturing locations before finalizing procurement orders.

Selection Notes

Select this component when a stable 5.0 V reference is required in space-constrained designs using SOT-23 packages. It is suitable for applications demanding low power consumption alongside high precision. Ensure the input supply voltage remains within the specified 5.2 V to 5.5 V range to maintain regulation and accuracy specifications under all operating conditions.

Part Context

This part belongs to the ADR34xx family of micropower voltage references from Analog Devices. The family includes various output voltages such as 1.2 V, 2.048 V, and 3.3 V, all sharing similar low-power characteristics and package options. The ADR3450 specifically targets applications requiring a standard 5 V rail with high accuracy.

Replacement Considerations

Other members of the ADR34xx series may serve as alternatives if different output voltages are acceptable. Verify pin compatibility and electrical specifications against the original design requirements before substitution.

FAQ

How does the ADR3450 achieve its high accuracy?

It uses 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 shuts down the device, reducing quiescent current to 5 μA.