ADR3433ARJZ Analog Devices Integrated Circuit (SOT23 (6-Pin)) In Stock
Analog Devices ADR3433 is a micropower high-accuracy 3.3 V series voltage reference with 0.1% initial accuracy, 10 ppm/°C temperature coefficient, and 100 µA supply current. Available in SOT-23-6 package, RoHS compliant, in stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- ADR3433ARJZ Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 3.3 V precision output voltage with 0.1% initial accuracy and 10 ppm/°C temperature coefficient for stable ADC and DAC references
- Ultra-low 100 µA quiescent current enabling always-on reference operation in battery-powered instrumentation without draining energy budgets
- Compact SOT-23-6 footprint with output capacitor-stable design requiring minimal external components for clean integration into mixed-signal PCBs
Applications
The ADR3433 is designed as a precision voltage reference for ADC, DAC, and bridge excitation circuits in portable instrumentation, medical devices, and industrial signal conditioning modules where a stable 3.3 V rail free from load regulation errors is critical. Its micropower 100 µA quiescent current makes it suitable for always-on battery management systems and handheld test equipment requiring long operating life. The compact SOT-23-6 package and wide input voltage range allow direct use across 3.3 V to 12 V supply rails without additional regulation stages.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for ADR3433ARJZ:
Frequently Asked Questions
What output voltage and initial accuracy does the ADR3433ARJZ provide for precision measurement circuits?
The ADR3433ARJZ delivers a 3.3 V output voltage with an initial accuracy of 0.1%, corresponding to ±3.3 mV maximum error at room temperature. This level of precision makes it directly suitable as a reference for 12-bit and 14-bit ADC designs where reference error must remain below one LSB across the operating range.
How does the temperature coefficient of the ADR3433ARJZ affect measurement accuracy over industrial temperature ranges?
The ADR3433ARJZ specifies a 10 ppm/°C temperature coefficient, which translates to a 1 mV total reference drift across a -40°C to 85°C industrial temperature range. This drift is acceptable for 12-bit ADC references in environmental monitoring, weighing systems, and pressure sensing applications without requiring software temperature compensation.
What is the quiescent current of the ADR3433ARJZ, and why does it matter for battery-powered designs?
The ADR3433ARJZ draws approximately 100 µA quiescent supply current, enabling an always-on reference without significant impact on a 2000 mAh coin-cell or AA battery pack, adding less than 20 mW static power in a 3.3 V system and extending product operating life in portable patient monitors and remote sensor transmitters.
In what package does the ADR3433ARJZ ship, and what PCB footprint does it require?
The ADR3433ARJZ uses a SOT-23-6 package measuring approximately 2.9 mm x 1.6 mm with a 0.95 mm pin pitch, one of the smallest footprints available for precision voltage references. This allows placement adjacent to ADC inputs in space-constrained designs such as wearable sensor modules and miniaturized industrial transmitters with PCB areas under 5 cm².
When should an engineer choose the ADR3433ARJZ over a simple LDO regulator as a voltage reference for an ADC?
An LDO regulator typically exhibits load regulation of 0.5% to 2% and line regulation sensitive to input voltage variation, whereas the ADR3433ARJZ is laser-trimmed for 0.1% initial accuracy and 10 ppm/°C drift. For 12-bit or higher ADC applications where reference noise and drift directly set measurement floor noise, the ADR3433ARJZ is the correct choice over a general-purpose LDO.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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