ADR3430ARJZ-R7

Overview

The ADR3430ARJZ-R7 is a micropower, high-accuracy CMOS voltage reference providing a nominal output of 3.0 V. It operates within an input voltage range of 3.2 V to 5.5 V and maintains ±0.1% initial accuracy with a maximum temperature coefficient of 8 ppm/°C across the industrial temperature range of −40°C to +125°C. The device draws a maximum quiescent current of 100 μA and supports an output current capacity of +10 mA sourcing and −3 mA sinking. It features low dropout voltage (250 mV at 2 mA) and low output noise (<10 μV p-p from 0.1 Hz to 10 Hz). Packaged in a 6-lead SOT-23, it utilizes DigiTrim® technology for precision trimming.

Feature Summary

• Digital trimming via proprietary DigiTrim® technology ensures high accuracy and low temperature coefficient.
• Low quiescent current consumption facilitates usage in battery-powered devices.
• Integrated enable pin allows for shutdown mode to minimize power consumption.
• Kelvin force/sense connections improve load regulation and system reliability.

Applications

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

Procurement Notes

Verify the specific ordering suffix matches the required packaging format, as the R7 designation indicates tape and reel supply. Confirm that the input voltage requirements align with the 3.2 V minimum threshold specified for the 3.0 V output variant. Ensure thermal management considerations are addressed given the SOT-23 package constraints and operating temperature range specifications.

Selection Notes

Select this component when a stable 3.0 V reference is required with minimal power consumption. The wide input voltage range up to 5.5 V provides flexibility in system design. Consider the low noise characteristics for sensitive signal processing applications. Verify that the load current requirements do not exceed the 10 mA sourcing capability.

Part Context

This part belongs to the ADR34xx family of micropower voltage references from Analog Devices. The family includes variants with different fixed output voltages such as 1.2 V, 2.048 V, 2.5 V, 3.3 V, 4.096 V, and 5.0 V. All members share similar architectural features including CMOS construction, DigiTrim® calibration, and the 6-lead SOT-23 package form factor.

Replacement Considerations

Other members of the ADR34xx series may serve as alternatives if different output voltages are acceptable. Cross-reference with other Analog Devices precision references like the ADR430 or ADR36x series if higher performance metrics are required, noting differences in package and power consumption.

FAQ

How does the ADR3430 achieve its 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 device state; pulling it below 0.7 V activates shutdown mode, reducing quiescent current to 5 μA.

Why are Force and Sense pins provided?

They allow for 4-wire Kelvin connections to compensate for trace resistance, ensuring accurate voltage delivery to the load.