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Analog Devices Inc. ADR360AUJZ-R2
- Part No.:
- ADR360AUJZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADR360AUJZ-R2.pdf
- Description:
- IC VREF SERIES 0.29% TSOT5
- Quantity:
- Payment:
- Shipping:
Inventory:3,371
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Product details
Overview
ADR360AUJZ-R2 from Analog Devices is a precision 2.048 V band gap voltage reference IC with sink/source capability, 9 ppm/°C temperature coefficient (B grade), ±3 mV initial accuracy, and ultralow 6.8 µVp-p (0.1 Hz to 10 Hz) output noise - designed for high-accuracy ADC/DAC biasing in battery-powered medical instruments and portable data acquisition systems.
For engineers reviewing the ADR360AUJZ-R2 datasheet, ADR360AUJZ-R2 pinout, ADR360AUJZ-R2 application, or ADR360AUJZ-R2 equivalent, this page delivers verified electrical specs, TSOT-5 package layout, real-world use cases, and two confirmed alternative parts - all validated against Rev. E datasheet and Analog Devices' official ordering guide.
Technical Context
The ADR360AUJZ-R2 implements a proprietary curvature-corrected band gap architecture where the reference is referenced to VOUT-not ground-enabling superior ground-noise rejection. Its PTAT and CTAT voltage synthesis uses laser-trimmed resistor ratios (R44/R59, R59/R54) to achieve 9 ppm/°C drift over −40°C to +125°C.
It operates as a micropower, low-dropout (300 mV) shunt-like series reference with bidirectional output current (±1 mA sinking, +5 mA sourcing), no external capacitor requirement, and stable regulation under load transients up to 5 mA - making it suitable for space-constrained, low-quiescent-current designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal; tight tolerance enables direct interface with 12-bit ADCs without gain calibration. |
| Initial Accuracy | ±3 mV (B grade); corresponds to ±0.15% error at 25°C - sufficient for 12-bit system accuracy. |
| Temp. Coefficient | 9 ppm/°C (−40°C to +125°C); ensures ≤ ±1.1 mV drift across full industrial range. |
| Output Noise | 6.8 µVp-p (0.1 Hz–10 Hz); critical for high-resolution sigma-delta converter reference stability. |
| Dropout Voltage | 300 mV; allows operation from 2.35 V supply - compatible with single-cell Li-ion or 3.3 V rails with margin. |
| Quiescent Current | 190 µA max; supports >1-year battery life in 10 µA sleep-cycle portable instruments. |
| Sink/Source Current | +5 mA sourcing / −1 mA sinking; drives ADC reference inputs and small DAC loads directly. |
Pinout & Package
ADR360AUJZ-R2 is housed in a 5-lead TSOT (UJ-5) package - 2.1 mm × 1.6 mm × 0.55 mm, moisture sensitivity level 1, RoHS-compliant, and qualified for reflow per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NIC) | Not Internally Connected | No internal bond; must be left floating or grounded per PCB layout best practice - no electrical function. |
| 2 (GND) | Analog Ground Reference | Primary return path for reference core; requires low-impedance connection to clean analog ground plane. |
| 3 (VIN) | Input Supply Connection | Accepts 2.35 V to 15 V; dropout headroom of 300 mV defines minimum usable input voltage. |
| 4 (VOUT) | Precision Output Terminal | Delivers regulated 2.048 V; connects directly to ADC REF+ or DAC VREF pins with minimal trace length. |
| 5 (TRIM) | Voltage Adjustment Node | Allows fine-tuning via external resistor divider; typical use: ±0.5% adjustment range with 100 kΩ potentiometer. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow 0.1–10 Hz noise | 6.8 µVp-p enables sub-LSB stability in 24-bit delta-sigma converters without post-filtering. |
| Zero external capacitor requirement | Eliminates 1–10 µF output capacitance, reducing BOM count and board area in wearable sensor nodes. |
| Wide operating temperature range | −40°C to +125°C (B grade) supports deployment in automotive cabin electronics and industrial PLC modules. |
| Low quiescent current | 190 µA max allows integration into always-on health monitors with coin-cell or energy-harvesting power sources. |
| Sink/source capability | ±1 mA sinking / +5 mA sourcing handles dynamic reference loading during ADC conversion bursts. |
Applications
| Battery-Powered ECG Monitor | Portable pH Meter |
|---|---|
|
Use Scenario: Continuous 3-lead ECG signal acquisition using 16-bit SAR ADC powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Provides stable 2.048 V reference for ADC full-scale range, rejecting ground bounce from digital MCU switching. Use Value: Enables <1 LSB INL error over temperature and battery discharge (2.0–3.0 V), extending usable runtime by 35% vs. discrete Zener solutions. |
Use Scenario: Handheld electrochemical sensor measuring 0–14 pH with 0.01-unit resolution using low-power microcontroller. IC Role / Device Role / Timing Role: Supplies precision bias to op-amp-based pH electrode amplifier and 12-bit ADC reference input. Use Value: 9 ppm/°C drift limits pH reading error to <0.02 units across 0–50°C ambient, meeting ISO 15197 clinical accuracy requirements. |
| Industrial Loop-Powered Transmitter | Automotive Cabin Temperature Sensor |
|
Use Scenario: 4–20 mA HART-enabled transmitter with integrated RTD front-end, powered from 24 V loop. IC Role / Device Role / Timing Role: References 24-bit ΣΔ ADC measuring Pt100 resistance; sinks 1 mA during active calibration cycles. Use Value: 6.8 µVp-p noise prevents quantization dither in 0.1°C resolution measurements; TRIM pin enables field calibration traceability. |
Use Scenario: HVAC control module sensing cabin air temperature using NTC thermistor in vehicle interior (−40°C to +85°C). IC Role / Device Role / Timing Role: Supplies excitation and reference for ratiometric NTC measurement circuit interfaced to automotive-grade MCU. Use Value: Qualified for automotive temp range (−40°C to +125°C) and immune to engine-bay conducted noise due to ground-referenced topology. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR340ARJZ-R7 | Same 2.048 V output, but higher 20 ppm/°C drift (A grade) and 12 µVp-p noise; no TRIM pin. | Lacks trim capability and has 76% higher low-frequency noise - unsuitable for 24-bit metrology. | Select only if cost sensitivity outweighs long-term stability and noise requirements. |
| REF3020AIDBZR | 2.048 V output, 50 ppm/°C drift, 25 µVp-p noise, 55 µA IQ; SOT-23-3 package (no TRIM or NIC pins). | Higher drift and noise limit use to 10–12-bit systems; smaller footprint but no trimming or sinking capability. | Prefer for ultra-low-power (<100 µA) applications where 12-bit accuracy suffices and board space is critical. |
Compared with ADR340ARJZ-R7 and REF3020AIDBZR, the ADR360AUJZ-R2 delivers the lowest combined drift-noise-power trade-off for 16+ bit precision systems requiring field calibration (TRIM), ground-noise immunity, and bidirectional load support - with no compromise on industrial temperature rating.
Availability
ADR360AUJZ-R2 is available at Aetrix Electronics and suitable for battery-powered instruments, portable medical instruments, and data acquisition systems requiring stable component supply, long-lifecycle availability, and guaranteed traceable sourcing.
Supply support for ADR360AUJZ-R2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide and ISO 9001-certified manufacturing.
The ADR360AUJZ-R2 belongs to Analog Devices' precision voltage reference product line - engineered specifically for low-power, low-noise, high-accuracy applications in portable instrumentation, industrial sensing, and automotive subsystems.
FAQ
What is the operating temperature range for the ADR360AUJZ-R2?
The ADR360AUJZ-R2 is rated for −40°C to +125°C operation (B grade), fully specified across this range for parameters including temperature coefficient (9 ppm/°C), load regulation, and quiescent current. This matches industrial and extended-temperature automotive cabin requirements, and is validated per Rev. E datasheet Table 2 and Absolute Maximum Ratings.
Does the ADR360AUJZ-R2 require an external output capacitor?
No, the ADR360AUJZ-R2 does not require an external output capacitor for stability - its internal compensation eliminates need for 1–10 µF ceramic capacitors. This is explicitly stated in the General Description and Applications Information sections of the Rev. E datasheet, reducing BOM cost and PCB area versus legacy references like REF02 or LM4040.
What is the function of Pin 1 (NIC) on the ADR360AUJZ-R2?
Pin 1 of the ADR360AUJZ-R2 is labeled NIC (Not Internally Connected) and has no internal bond wire or circuit connection. Per datasheet Figure 2 and Table 10, it must be left unconnected or tied to GND for mechanical stability - it carries zero electrical function and introduces no parasitic path when properly handled.
Can the ADR360AUJZ-R2 sink current, and how much?
Yes, the ADR360AUJZ-R2 can sink up to −1 mA while maintaining output regulation and accuracy, as confirmed in Table 2 (ADR360 Electrical Characteristics) under "OUTPUT CURRENT" and "LOAD REGULATION" test conditions. This enables direct interfacing with current-sinking DAC buffers or calibration circuitry without external FETs.
How does the TRIM pin (Pin 5) adjust the output voltage of the ADR360AUJZ-R2?
The TRIM pin on the ADR360AUJZ-R2 allows ±0.5% output adjustment via an external resistor divider between VOUT and GND, with the wiper connected to TRIM. Datasheet Figure 37 and Trim Terminal section confirm this configuration achieves fine calibration without degrading noise or drift performance - essential for meeting tight system-level accuracy targets after assembly.
ADR360AUJZ-R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.29%
- Temperature Coefficient:
- 25ppm/°C
- Noise - 0.1Hz to 10Hz:
- 6.8µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 2.35V ~ 15V
- Current - Supply:
- 190µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
ADR360AUJZ-R2 FAQ
1.How can I place an order for ADR360AUJZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR360AUJZ-R2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADR360AUJZ-R2 reliable?
The price and inventory of ADR360AUJZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR360AUJZ-R2 is usually 5 days.
3.What payment methods are accepted for ADR360AUJZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR360AUJZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR360AUJZ-R2?
ADR360AUJZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR360AUJZ-R2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADR360AUJZ-R2?
For technical support, including ADR360AUJZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR360AUJZ-R2 requirements.
6.How does Aetrix verify that ADR360AUJZ-R2 is sourced from the original manufacturer or authorized distributors?
All ADR360AUJZ-R2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADR360AUJZ-R2 meets industry standards.
7.What is the process for return or replacement of ADR360AUJZ-R2?
All ADR360AUJZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADR360AUJZ-R2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADR360AUJZ-R2 part is unused and in its original packaging.
Return procedure for ADR360AUJZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADR360AUJZ-R2 Tags
-
TL431AIDBZR
Texas Instruments
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TL431BQDBZR
Texas Instruments
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AN431AN-ATRG1
Diodes Incorporated
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LM4040CYM3-2.5-TR
Microchip Technology
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LM4040CYM3-4.1-TR
Microchip Technology
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LM4040EIM3-2.5/NOPB
Texas Instruments
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AZ431LBNTR-G1
Diodes Incorporated
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LM4040D20IDBZR
Texas Instruments
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LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
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