ADR3433ARJZ-R7

Overview

The ADR3433ARJZ-R7 is a micropower, high-accuracy CMOS voltage reference manufactured by Analog Devices Inc. It provides a fixed output voltage of 3.3 V with an initial accuracy of ±0.1% and a maximum temperature coefficient of 8 ppm/°C over the industrial temperature range of −40°C to +125°C. The device operates within an input voltage range of 3.5 V to 5.5 V and features a low quiescent current of 100 μA maximum. It supports an output current capacity of +10 mA sourcing and −3 mA sinking. Key electrical characteristics include a line regulation of 50 ppm/V, load regulation of 30 ppm/mA (sourcing), and an output noise of 25 μV p-p in the 0.1 Hz to 10 Hz frequency band.

Feature Summary

• Utilizes proprietary DigiTrim technology for digital trimming of output voltage and temperature coefficient during final assembly to ensure high precision.
• Incorporates separate Force and Sense pins for both Ground and Voltage Output to enable 4-wire Kelvin connections that minimize trace resistance errors.
• Features a dedicated Enable pin that allows for system power management by switching between normal operation and a low-power shutdown mode.

Applications

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

Procurement Notes

Verify the specific ordering suffix R7 corresponds to the tape and reel packaging configuration required for automated surface-mount assembly processes. Confirm that the component meets all relevant environmental compliance standards applicable to your manufacturing region before initiating procurement orders.

Selection Notes

Select this component when a stable 3.3 V reference is required in space-constrained designs utilizing the SOT-23 package. Ensure the supply voltage remains above 3.5 V to maintain specified accuracy and consider the 100 μA quiescent current budget for battery-operated applications requiring extended operational life.

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, 3.0 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 footprint.

Replacement Considerations

Direct functional substitutes within the same series include ADR3430 (3.0 V) or ADR3440 (4.096 V) if voltage levels differ. For identical 3.3 V performance, verify compatibility with other manufacturers' CMOS references offering similar ±0.1% accuracy and low noise specifications.