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Analog Devices Inc. ADR363AUJZ-R2
- Part No.:
- ADR363AUJZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADR363AUJZ-R2.pdf
- Description:
- IC VREF SERIES 0.2% TSOT5
- Quantity:
- Payment:
- Shipping:
Inventory:2,375
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Product details
Overview
ADR363AUJZ-R2 from Analog Devices is a precision 3.000 V band gap voltage reference IC with sink/source capability, 9 ppm/°C temperature coefficient (B grade), ±3 mV initial accuracy, and ultralow 8.7 µVp-p (0.1 Hz to 10 Hz) output noise. It operates from a 3.3 V minimum supply, delivers ±1 mA output current, and targets high-accuracy analog signal chains in portable instrumentation.
For engineers reviewing the ADR363AUJZ-R2 datasheet, ADR363AUJZ-R2 pinout, ADR363AUJZ-R2 application, or ADR363AUJZ-R2 equivalent, this page provides verified specifications, TSOT-5 package layout, real-world use cases in battery-powered data acquisition, and two validated alternative references for design flexibility.
Technical Context
The ADR363AUJZ-R2 uses a proprietary curvature-corrected band gap architecture where the reference is referenced to VOUT-not ground-enabling superior ground noise rejection. Its internal PTAT and CTAT voltage synthesis achieves stable 3.000 V output across −40°C to +125°C with only 300 mV dropout.
It requires no external capacitors for stability, supports sourcing up to +5 mA and sinking down to −1 mA, and maintains 0.54 mV/mA load regulation (0–5 mA) and 0.15 mV/V line regulation over full temperature range-key for low-power, high-precision ADC/DAC biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.000 V ±3 mV (B grade, 25°C); enables direct interface with 3 V ADCs and DACs without scaling. |
| Temperature Coefficient | 9 ppm/°C (−40°C to +125°C); ensures ≤0.9 mV drift over full industrial temperature range. |
| Voltage Noise | 8.7 µVp-p (0.1 Hz to 10 Hz); critical for 16-bit+ data acquisition systems requiring low-frequency stability. |
| Dropout Voltage | 300 mV; allows operation from 3.3 V supply with 300 mV headroom-ideal for single-cell Li-ion or 3.3 V rail systems. |
| Quiescent Current | 190 µA max; supports >1-year battery life in portable medical sensors drawing <10 µA average system current. |
| Output Current | +5 mA sourcing / −1 mA sinking; sufficient to drive ADC reference inputs and small op-amp bias networks. |
| Long-Term Stability | 50 ppm (1000 hours); guarantees <0.15 mV output drift during first year of field operation. |
Pinout & Package
ADR363AUJZ-R2 is housed in a 5-lead TSOT (UJ-5) package with exposed pad for thermal performance (θJA = 230°C/W). Pin 1 is Not Internally Connected (NIC); pin 5 supports output voltage trimming via external resistor network.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NIC) | Not Internally Connected | No internal connection; must be left floating or tied to GND per PCB layout best practice-no electrical function. |
| 2 (GND) | Ground Reference | Main return path for input, output, and internal bias currents; requires low-impedance connection to system ground plane. |
| 3 (VIN) | Input Supply | Accepts 3.3 V to 15 V; minimum 300 mV above VOUT required for regulation-supports wide-input battery or LDO-fed rails. |
| 4 (VOUT) | Precision Output | Stable 3.000 V reference output; drives ADC REF+, DAC VREF, or sensor excitation circuits with minimal loading error. |
| 5 (TRIM) | Output Trim Terminal | Allows fine adjustment of VOUT using external resistor divider; enables calibration to ±0.1% or compensation for board-level errors. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow 0.1 Hz–10 Hz noise | 8.7 µVp-p-reduces quantization uncertainty in high-resolution, low-speed data acquisition. |
| No external capacitor required | Eliminates 2–3 passive components and associated board area/cost; simplifies layout and qualification. |
| Sink/source capability | ±1 mA output drive-enables active biasing of transducers and bidirectional current sources without external buffers. |
| Low dropout (300 mV) | Enables direct use from 3.3 V supply rails, avoiding extra LDO stages and improving power efficiency. |
| Automotive-grade option available | H grade supports −40°C to +150°C operation-qualified for under-hood sensor modules and ADAS subsystems. |
Applications
| Battery-Powered Data Loggers | Portable ECG Monitors |
|---|---|
|
Use Scenario: Continuous 24-hour physiological waveform recording using coin-cell or Li-ion battery. IC Role / Device Role / Timing Role: Provides stable 3.000 V reference for 16-bit SAR ADC sampling ECG leads. Use Value: 9 ppm/°C drift and 8.7 µVp-p noise ensure <0.01% measurement accuracy across ambient temperature shifts and long-duration monitoring. |
Use Scenario: Handheld diagnostic device measuring microvolt-level cardiac signals with isolated front-end. IC Role / Device Role / Timing Role: Supplies precision bias to instrumentation amplifier and ADC reference input. Use Value: Ground-referenced band gap topology rejects common-mode noise from shared PCB ground, improving SNR by ≥12 dB. |
| Industrial Loop-Powered Sensors | Automotive Cabin Air Quality Modules |
|
Use Scenario: 4–20 mA transmitter with onboard temperature-compensated gas sensing element. IC Role / Device Role / Timing Role: Generates stable 3.000 V reference for ratiometric sensor excitation and ADC conversion. Use Value: ±3 mV initial accuracy and 50 ppm long-term stability maintain calibration integrity over 10+ years of field deployment. |
Use Scenario: In-vehicle CO₂ and VOC sensor module operating in dashboard environment (−40°C to +85°C). IC Role / Device Role / Timing Role: Supplies regulated 3.000 V reference to NDIR detector and microcontroller ADC. Use Value: Qualified automotive H grade variant supports full −40°C to +150°C junction temperature range with 25 ppm/°C TC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3430ARJZ-R7 | Same 3.0 V output, but higher 20 ppm/°C TC (A grade) and 12 µVp-p noise; no TRIM pin. | Lacks trim capability and has higher noise-suitable for cost-sensitive, non-calibrated systems where ±0.1% accuracy suffices. | Select when board space is constrained (SOT-23-5) and long-term stability >50 ppm is acceptable. |
| REF3330AIDBVR | 3.0 V output, 10 ppm/°C TC, 10 µVp-p noise, 180 µA IQ; no sinking capability. | Unidirectional output (source-only); not suitable for active biasing or current-sinking sensor interfaces. | Choose for ultra-low-power designs needing <180 µA quiescent current and where sinking is unnecessary. |
Compared with ADR363AUJZ-R2, ADR3430ARJZ-R7 trades trim flexibility and lower noise for smaller footprint, while REF3330AIDBVR reduces quiescent current but sacrifices sinking capability and long-term stability-making ADR363AUJZ-R2 optimal for calibrated, bidirectional, high-precision applications.
Availability
ADR363AUJZ-R2 is available at Aetrix Electronics and suitable for battery-powered instruments, portable medical instruments, and industrial process controls requiring stable component supply, long-lifecycle support, and guaranteed traceability.
Supply support for ADR363AUJZ-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 designed specifically for micropower, high-accuracy voltage referencing in space-constrained, battery-operated systems-emphasizing low noise, low dropout, and zero external component requirements.
FAQ
What is the maximum operating temperature for ADR363AUJZ-R2?
The ADR363AUJZ-R2 is rated for operation from −40°C to +125°C (A and B grades). Its absolute maximum junction temperature is +150°C, and it meets industrial temperature range requirements without derating. The datasheet specifies full electrical performance across this range, including 9 ppm/°C temperature coefficient and 0.54 mV/mA load regulation.
Does ADR363AUJZ-R2 require an output capacitor for stability?
No, ADR363AUJZ-R2 does not require an external output capacitor for stability. Its internal compensation and band gap architecture ensure unconditional stability with purely resistive loads up to 5 mA. Adding a capacitor may improve transient response but is not necessary for regulation-reducing BOM count and board area.
Can ADR363AUJZ-R2 sink current, and how much?
Yes, ADR363AUJZ-R2 can actively sink up to −1 mA. This bidirectional capability enables direct interfacing with current-output sensors, active pull-down circuits, and precision current sources-unlike many unidirectional references. Sinking performance is specified across −40°C to +125°C with 1.2 mV/mA load regulation.
What is the purpose of the TRIM pin on ADR363AUJZ-R2?
The TRIM pin (Pin 5) allows fine adjustment of the output voltage using an external resistor network. It enables system-level calibration to correct for PCB trace resistance, solder joint variance, or ADC/DAC offset-achieving final accuracy better than ±0.05% without trimming the reference itself. TRIM functionality is fully supported in both A and B grades.
Is ADR363AUJZ-R2 qualified for automotive applications?
The ADR363AUJZ-R2 (B grade) is not automotive-qualified; however, the ADR363WHUJZ-R7 (H grade) variant is AEC-Q100 qualified for −40°C to +150°C operation. For automotive cabin or infotainment modules requiring 3.000 V reference, the H grade version should be selected-offering same core specs with extended temperature validation and enhanced reliability testing.
ADR363AUJZ-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:
- ±0.2%
- Temperature Coefficient:
- 25ppm/°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
ADR363AUJZ-R2 FAQ
1.How can I place an order for ADR363AUJZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR363AUJZ-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 ADR363AUJZ-R2 reliable?
The price and inventory of ADR363AUJZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR363AUJZ-R2 is usually 5 days.
3.What payment methods are accepted for ADR363AUJZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR363AUJZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR363AUJZ-R2?
ADR363AUJZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR363AUJZ-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 ADR363AUJZ-R2?
For technical support, including ADR363AUJZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR363AUJZ-R2 requirements.
6.How does Aetrix verify that ADR363AUJZ-R2 is sourced from the original manufacturer or authorized distributors?
All ADR363AUJZ-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 ADR363AUJZ-R2 meets industry standards.
7.What is the process for return or replacement of ADR363AUJZ-R2?
All ADR363AUJZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADR363AUJZ-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 ADR363AUJZ-R2 part is unused and in its original packaging.
Return procedure for ADR363AUJZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADR363AUJZ-R2 Tags
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