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Analog Devices Inc. ADR363BUJZ-R2
- Part No.:
- ADR363BUJZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADR363BUJZ-R2.pdf
- Description:
- IC VREF SERIES 0.1% TSOT5
- Quantity:
- Payment:
- Shipping:
Inventory:3,921
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Product details
Overview
ADR363BUJZ-R2 from Analog Devices is a precision 3.000 V band gap voltage reference IC with sink/source capability, ±3 mV initial accuracy (B grade), 9 ppm/°C temperature coefficient, and ultralow 8.7 µVp-p (0.1 Hz to 10 Hz) output noise - designed for high-accuracy ADC/DAC biasing in battery-powered data acquisition systems.
For engineers reviewing the ADR363BUJZ-R2 datasheet, ADR363BUJZ-R2 pinout, ADR363BUJZ-R2 application, or ADR363BUJZ-R2 equivalent, key selection criteria include its 300 mV dropout, −40°C to +125°C operating range, 5 mA sourcing / −1 mA sinking capability, and TSOT-5 package compatibility with space-constrained portable medical and industrial sensor interfaces.
Technical Context
The ADR363BUJZ-R2 implements a curvature-corrected band gap architecture where the reference is referenced to VOUT-not ground-enabling inherent ground-noise rejection. Its proprietary trimming and resistor ratio design achieves 9 ppm/°C drift over −40°C to +125°C without external capacitors.
It operates as a micropower, low-dropout shunt-like series reference: stable output requires only VIN ≥ VOUT + 300 mV, supports load currents from −1 mA to +5 mA, and delivers 25 µs turn-on settling time with no input or output capacitance required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.000 V nominal, with ±3 mV (±0.1%) initial accuracy at 25°C - enables direct interface with 12-bit ADCs without calibration. |
| Tempco | 9 ppm/°C (B grade, −40°C to +125°C) - ensures ≤ ±1.08 mV total drift across full industrial temperature range. |
| Noise (0.1–10 Hz) | 8.7 µVp-p - minimizes quantization uncertainty in precision 16-bit+ data acquisition front-ends. |
| Dropout Voltage | 300 mV - allows operation from single-cell Li-ion (3.0 V min) or 3.3 V rails with margin. |
| Quiescent Current | 150–190 µA - supports >1-year battery life in 10 µA-average-power portable instruments. |
| Output Current | +5 mA sourcing / −1 mA sinking - drives ADC reference inputs, op-amp bias networks, and small DAC loads directly. |
| Long-Term Stability | 50 ppm (1000 hrs) - limits calibration interval drift to <0.15 mV over first year of operation. |
Pinout & Package
ADR363BUJZ-R2 is housed in a 5-lead TSOT (UJ-5) package - 2.9 mm × 1.6 mm × 0.8 mm, moisture sensitivity level 1, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NIC) | Not Internally Connected | No internal bond; must be left floating or tied to GND per layout best practice - no electrical function. |
| 2 (GND) | Ground Reference | Primary return path for internal band gap core and output stage; requires low-impedance PCB connection to minimize noise coupling. |
| 3 (VIN) | Input Supply | Accepts 3.3 V to 15 V; minimum headroom = 300 mV above VOUT - defines lowest usable supply voltage. |
| 4 (VOUT) | Precision Output | Stable 3.000 V reference node; capable of sourcing up to 5 mA or sinking up to 1 mA into load. |
| 5 (TRIM) | Voltage Trim Terminal | Allows fine adjustment of output via external resistor divider; typical trim range ±0.5% around nominal 3.000 V. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Eliminates 2–4 passive components and associated board area; simplifies layout and improves reliability in vibration-prone environments. |
| Ground-referenced band gap topology | Rejects ground-plane noise by referencing core to VOUT - critical for mixed-signal systems with noisy digital grounds. |
| Ultralow 0.1–10 Hz noise | 8.7 µVp-p enables sub-LSB stability in high-resolution delta-sigma ADCs used in weigh scales and medical sensors. |
| Automotive-qualified temperature range option | B grade supports −40°C to +125°C operation - meets AEC-Q100 stress test requirements for under-hood and infotainment modules. |
| Laser-trimmed precision | ±3 mV initial accuracy achieved via on-die laser trimming - reduces system-level calibration overhead and BOM cost. |
Applications
| Portable ECG Monitors | Industrial 4–20 mA Transmitters |
|---|---|
Use Scenario: Battery-powered, handheld ECG units requiring stable analog front-end bias for 16-bit SAR ADCs and instrumentation amplifiers. IC Role / Device Role / Timing Role: Primary voltage reference for ADC reference input and op-amp bias network - sets absolute measurement scale. Use Value: 8.7 µVp-p noise and 9 ppm/°C tempco ensure <0.01% gain error drift over temperature, meeting IEC 60601 clinical accuracy requirements. | Use Scenario: Loop-powered field transmitters converting RTD or pressure sensor outputs to 4–20 mA signals in hazardous-area process plants. IC Role / Device Role / Timing Role: Precision excitation and reference source for ratiometric sensor measurements and DAC-controlled current output stages. Use Value: 300 mV dropout and 190 µA quiescent current allow operation from 3.3 V supply while maintaining loop compliance voltage margin. |
| High-Accuracy Data Loggers | Automotive Battery Management Systems |
Use Scenario: Solar-powered environmental loggers measuring temperature, humidity, and gas concentration over multi-year deployments. IC Role / Device Role / Timing Role: Stable reference for multiplexed 24-bit delta-sigma ADCs acquiring thermistor, bridge, and electrochemical sensor data. Use Value: 50 ppm long-term stability limits recalibration frequency to once per 2 years, reducing maintenance cost and downtime. | Use Scenario: Cell voltage monitoring ICs in EV battery packs operating from −40°C to +125°C under thermal cycling stress. IC Role / Device Role / Timing Role: Reference for precision ADCs measuring individual Li-ion cell voltages with ±1 mV accuracy. Use Value: B-grade 9 ppm/°C tempco and −40°C to +125°C rating ensure <±2.5 mV total error across full automotive temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3330AIDBVR | 3.0 V, ±0.2% initial accuracy, 10 ppm/°C, 12 µVp-p noise, SOT-23-3 package - no TRIM pin or sinking capability. | Lacks sink current and trim terminal; unsuitable for ratiometric sensor excitation or fine calibration. | Select REF3330AIDBVR only when board space is constrained and trim/sink functions are unnecessary. |
| ADR3430ARJZ-R7 | 3.0 V, ±0.1% initial accuracy, 10 ppm/°C, 9 µVp-p noise, same TSOT-5 package - no sinking capability, higher quiescent current (220 µA). | Higher power consumption and no sink current limit use in ultra-low-power wake-up circuits. | Choose ADR3430ARJZ-R7 if tighter initial accuracy is prioritized over sink capability and quiescent current. |
Compared with REF3330AIDBVR and ADR3430ARJZ-R7, ADR363BUJZ-R2 uniquely combines sink current support, trim adjustability, and industry-leading 9 ppm/°C tempco in a 5-pin TSOT - making it optimal for ratiometric sensing, battery-operated calibration, and automotive-grade precision systems where ground noise immunity is critical.
Availability
ADR363BUJZ-R2 is available at Aetrix Electronics and suitable for portable medical instruments, industrial process controls, and battery-powered data acquisition systems requiring stable component supply, long-term calibration integrity, and automotive-grade temperature resilience.
Supply support for ADR363BUJZ-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.
The ADR36x family was engineered specifically for micropower, low-noise, high-accuracy voltage reference needs in portable, automotive, and industrial instrumentation - emphasizing dropout efficiency, temperature stability, and ease of integration without external components.
FAQ
What is the operating temperature range for ADR363BUJZ-R2?
The ADR363BUJZ-R2 is rated for −40°C to +125°C operation (B grade). This range is fully specified for all key parameters including initial accuracy, temperature coefficient, load regulation, and quiescent current - making ADR363BUJZ-R2 suitable for industrial and extended-temperature automotive applications without derating.
Does ADR363BUJZ-R2 require external capacitors for stability?
No, ADR363BUJZ-R2 does not require external input or output capacitors for stability. Its internal design eliminates capacitor dependency, reducing bill-of-materials count and PCB footprint - a key advantage confirmed in the datasheet's Applications Information section and validated across all operating conditions.
What is the purpose of the TRIM pin on ADR363BUJZ-R2?
The TRIM pin on ADR363BUJZ-R2 provides access to the internal reference node for fine output adjustment using an external resistor divider. It enables ±0.5% trimming around the nominal 3.000 V output - useful for system-level calibration, matching sensor excitation, or compensating for PCB trace resistance.
Can ADR363BUJZ-R2 sink current, and how much?
Yes, ADR363BUJZ-R2 can sink up to −1 mA. This capability allows it to drive current into loads such as precision current sources, active filter bias networks, or pull-down paths in ratiometric sensor interfaces - a feature absent in many competing references like REF3330 or ADR3430.
How does the ground-referenced band gap architecture of ADR363BUJZ-R2 improve noise performance?
The ADR363BUJZ-R2 references its band gap core to VOUT instead of GND, inherently attenuating ground-plane noise coupled into the reference output. This architecture reduces sensitivity to shared-impedance noise in mixed-signal PCBs - a documented design advantage in the Theory of Operation section of the ADR363BUJZ-R2 datasheet.
ADR363BUJZ-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):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 9ppm/°C
- Noise - 0.1Hz to 10Hz:
- 8.7µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 3.3V ~ 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
ADR363BUJZ-R2 FAQ
1.How can I place an order for ADR363BUJZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR363BUJZ-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 ADR363BUJZ-R2 reliable?
The price and inventory of ADR363BUJZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR363BUJZ-R2 is usually 5 days.
3.What payment methods are accepted for ADR363BUJZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR363BUJZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR363BUJZ-R2?
ADR363BUJZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR363BUJZ-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 ADR363BUJZ-R2?
For technical support, including ADR363BUJZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR363BUJZ-R2 requirements.
6.How does Aetrix verify that ADR363BUJZ-R2 is sourced from the original manufacturer or authorized distributors?
All ADR363BUJZ-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 ADR363BUJZ-R2 meets industry standards.
7.What is the process for return or replacement of ADR363BUJZ-R2?
All ADR363BUJZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADR363BUJZ-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 ADR363BUJZ-R2 part is unused and in its original packaging.
Return procedure for ADR363BUJZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADR363BUJZ-R2 Tags
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