ADR121AUJZ-R2 Analog Devices Integrated Circuit (Other) In Stock
Analog Devices ADR121AUJZ-R2 is a precision micropower LDO voltage reference providing a 2.5 V output in a tiny TSOT-6 package. It delivers tight output accuracy of ±2.4 mV and ultra-low supply current, ideal for portable instrumentation and ADC reference applications.
- Manufacturer
- Analog Devices
- Package
- Other
- Pin Count
- 6
- Lifecycle
- OBSOLETE
- Datasheet
- ADR121AUJZ-R2 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of ADR121AUJZ-R2?
- Precision 2.5 V output with ±2.4 mV initial accuracy (2.494 V to 2.506 V)
- Micropower quiescent current for battery-powered and energy-harvesting designs
- LDO architecture allows operation with input voltages close to 2.5 V output
- Three-terminal SOT-23 compatible TSOT-6 package for minimal PCB footprint
- RoHS and REACH compliant for global regulatory requirements
- Single-output voltage reference suitable for precision ADC and DAC biasing
What is ADR121AUJZ-R2 used for?
The ADR121AUJZ-R2 provides a stable 2.5 V reference for precision ADC and DAC circuits in portable medical devices, industrial sensors, and battery-powered data acquisition systems. Its micropower consumption and compact TSOT package make it the preferred choice when board space and battery life are both constrained.
What are the specifications of ADR121AUJZ-R2?
| Pbfree Code | Yes |
| Reach Compliance Code | Compliant |
| YTEOL | 0 |
| Analog IC - Other Type | THREE TERMINAL VOLTAGE REFERENCE |
| JESD-30 Code | R-PDSO-G6 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Voltage-Max | 2.506V |
| Output Voltage-Min | 2.494V |
| Output Voltage-Nom | 2.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 18V |
| Supply Voltage-Min (Vsup) | 2.8V |
| Supply Voltage-Nom (Vsup) | 3V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temp Coef of Voltage-Max | 25ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | MATTE TIN |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Trim/Adjustable Output | NO |
| Voltage Tolerance-Max | 0.24% |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the ADR121AUJZ-R2 datasheet?
ADR121AUJZ-R2 Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for ADR121AUJZ-R2?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How accurate is the ADR121AUJZ-R2 output voltage, and what does that mean for ADC reference performance?
The ADR121AUJZ-R2 delivers a 2.5 V reference with initial accuracy of ±2.4 mV (output range 2.494 V to 2.506 V), representing approximately ±0.1% error. For a 12-bit ADC using this reference, that level of accuracy contributes less than half an LSB of offset, making it suitable for precision measurement applications.
Is the ADR121AUJZ-R2 suitable for always-on battery-powered sensor nodes given its quiescent current?
Yes. The ADR121AUJZ-R2 is a micropower voltage reference, consuming very low quiescent current in the tens of microamperes range. This makes it practical for always-on sensor nodes, IoT edge devices, and wearable electronics where the reference must remain active continuously without draining a small battery rapidly.
What input voltage headroom does the LDO architecture of ADR121AUJZ-R2 require above the 2.5 V output?
Because the ADR121AUJZ-R2 uses an LDO architecture, it requires only a small dropout margin above the 2.5 V output voltage, typically allowing operation from supply voltages as low as 2.7 V to 3.0 V. This is advantageous in low-voltage systems where headroom is limited.
What package does the ADR121AUJZ-R2 use, and how does it compare in size to a standard SOT-23?
The ADR121AUJZ-R2 is housed in a TSOT-6 package (JESD-30 R-PDSO-G6), which is a 6-pin thin small-outline transistor package with a footprint comparable to SOT-23 but with additional pins. This allows a 3-terminal reference function in a footprint under 2 mm × 2 mm, well-suited for high-density mixed-signal PCBs.
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Why Buy from FindMyChip
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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