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Analog Devices Inc. ADR02AUJ-R2
- Part No.:
- ADR02AUJ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADR02AUJ-R2.pdf
- Description:
- IC VREF SERIES PREC 5V TSOT-23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
ADR02AUJ-R2 from Analog Devices is a precision 5.0 V bandgap voltage reference in a 5-lead TSOT package, delivering ±0.1% initial accuracy, 9 ppm/°C max temperature coefficient (−40°C to +125°C), and 10 µVp-p low-frequency noise (0.1 Hz to 10 Hz). It operates from 7.0 V to 36.0 V input, supplies up to 10 mA, and supports precision data acquisition and high-resolution ADC biasing in space-constrained industrial systems.
For engineers reviewing the ADR02AUJ-R2 datasheet, ADR02AUJ-R2 pinout, ADR02AUJ-R2 application, or ADR02AUJ-R2 equivalent, this page delivers verified specifications, validated TSOT-5 pin mapping, real-world use cases in auto battery monitoring and PCMCIA cards, and two confirmed alternative references with documented functional and packaging differences.
Technical Context
The ADR02AUJ-R2 implements a thermally compensated bandgap core with internal trimming, enabling stable 5.0 V output across −40°C to +125°C. Its TEMP pin provides a calibrated 550 mV baseline with 1.96 mV/°C sensitivity for external temperature sensing, while the TRIM pin allows fine adjustment of output voltage via external resistor network.
Designed for wide-input-voltage operation (7.0 V to 36.0 V), it features 2 V dropout, 7–30 ppm/V line regulation, and 40–70 ppm/mA load regulation - all specified over full temperature range. No external capacitor is required for stability, simplifying layout in compact converter and sensor signal-chain designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V nominal; tight 4.995 V to 5.005 V min/max window ensures accurate ADC reference and DAC biasing. |
| Initial Accuracy | ±0.1% (±5 mV); enables single-point calibration in precision instrumentation without post-manufacture trimming. |
| Temp Coefficient | 9 ppm/°C maximum (TSOT-5, −40°C to +125°C); guarantees ≤0.9 mV drift over full industrial temperature range. |
| Voltage Noise | 10 µVp-p (0.1 Hz to 10 Hz); minimizes quantization error in 16-bit+ SAR and delta-sigma converters. |
| Supply Range | 7.0 V to 36.0 V; supports direct connection to unregulated 12 V/24 V rails in automotive and industrial power domains. |
| Output Current | 10 mA continuous; drives multiple op-amp references or ADC reference inputs without external buffer. |
| Quiescent Current | 0.65–1.0 mA; enables low-power operation in always-on battery-monitoring circuits. |
Pinout & Package
ADR02AUJ-R2 uses the 5-lead TSOT (UJ-5) surface-mount package, measuring 2.1 mm × 1.6 mm × 0.6 mm, with exposed pad for thermal enhancement (θJA = 230°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VOUT | Reference Output | Stable 5.0 V source; connects directly to ADC REF+ or precision op-amp non-inverting input. |
| 2 - TRIM | Output Adjustment | Allows ±0.5% fine-tuning via external resistor divider; used for system-level calibration. |
| 3 - VIN | Power Input | Accepts 7.0–36.0 V supply; requires no input capacitor for stability per datasheet. |
| 4 - TEMP | Temperature Sensor | Provides 550 mV @ 25°C with 1.96 mV/°C slope; enables on-chip thermal monitoring with external ADC. |
| 5 - GND | Analog Ground | Low-impedance return path; must be tied to clean analog ground plane to preserve noise performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultracompact TSOT-5 package | 2.1 mm × 1.6 mm footprint saves >60% board area vs. SOIC-8; ideal for PCMCIA, wearables, and modular sensors. |
| No external capacitor required | Eliminates need for input/output bypass caps - reduces BOM count and layout complexity in space-limited designs. |
| Integrated temperature sensor | Calibrated TEMP pin enables dual-function use: reference + thermal monitoring without added IC or NTC circuitry. |
| High output current (10 mA) | Drives multiple downstream devices (e.g., ADC reference + op-amp bias + DAC VREF) without external buffer stage. |
| Automotive-grade A grade option | A grade ADR02AUJ-R2 meets extended temp (−40°C to +125°C) and qualification requirements for under-hood applications. |
Applications
| Auto Battery Monitoring | Precision Data Acquisition |
|---|---|
Use Scenario: Real-time monitoring of 12 V vehicle battery voltage during engine cranking and cold-start conditions. IC Role / Device Role / Timing Role: Provides stable 5.0 V reference for microcontroller ADC measuring battery rail via resistive divider. Use Value: ±0.1% accuracy and 9 ppm/°C TC ensure <±10 mV measurement error across −40°C to +125°C ambient, critical for state-of-charge estimation. |
Use Scenario: High-resolution sensor signal conditioning in portable test equipment with 24-bit delta-sigma ADC. IC Role / Device Role / Timing Role: Supplies ultra-low-noise 5.0 V reference to ADC's REF+ input and bias network for front-end instrumentation amplifiers. Use Value: 10 µVp-p (0.1–10 Hz) noise floor prevents degradation of effective resolution beyond 20 bits in low-frequency measurements. |
| Industrial Process Control | PCMCIA Cards |
Use Scenario: 4 mA to 20 mA loop transmitter in factory automation, requiring precise current setpoint generation. IC Role / Device Role / Timing Role: Serves as stable voltage reference for current-output DAC and op-amp I-to-V conversion stage. Use Value: 7–30 ppm/V line regulation ensures current accuracy remains within ±0.1% despite 24 V supply fluctuations common in plant wiring. |
Use Scenario: Compact peripheral card (e.g., modem, memory expansion) requiring minimal PCB area and low quiescent power. IC Role / Device Role / Timing Role: Delivers regulated 5.0 V reference for card controller ADC and interface logic, operating from shared host bus voltage. Use Value: TSOT-5 package (2.1 × 1.6 mm) and 0.65 mA quiescent current enable compliance with PCMCIA Type II thickness and power budgets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR02ARZ-REEL7 | 8-lead SOIC package; 3 ppm/°C typical TC (vs. 9 ppm/°C max for ADR02AUJ-R2); same 5.0 V output and 7–30 ppm/V line regulation. | Requires larger PCB area; better suited for lab equipment or non-space-constrained industrial controllers where ultra-low drift is prioritized. | Select ADR02ARZ-REEL7 when long-term stability and lower temperature drift outweigh size constraints. |
| REF02CSZ-REEL7 | 5.0 V reference in SOIC-8; 25 ppm/°C max TC (−40°C to +85°C); no TEMP pin; 100 µVp-p noise (0.1–10 Hz) - 10× higher than ADR02AUJ-R2. | Lacks integrated temperature sensing and exhibits significantly higher noise; suitable only for cost-sensitive, non-precision applications. | Choose REF02CSZ-REEL7 only for legacy drop-in replacement where ADR02AUJ-R2's noise and TEMP features are unnecessary. |
Compared with ADR02ARZ-REEL7, ADR02AUJ-R2 trades 6 ppm/°C higher tempco for 65% smaller footprint and integrated temperature sensing; versus REF02CSZ-REEL7, it delivers 10× lower noise and calibrated thermal monitoring - making it uniquely suited for miniaturized, multi-function precision systems.
Availability
ADR02AUJ-R2 is available at Aetrix Electronics and suitable for precision data acquisition systems, auto battery monitoring, and PCMCIA cards requiring stable component supply, guaranteed A-grade automotive qualification, and ultracompact TSOT-5 packaging.
Supply support for ADR02AUJ-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 ADR02 series belongs to Analog Devices' precision voltage reference product line, engineered for high-accuracy, low-drift operation in industrial, automotive, and instrumentation applications demanding reliability across extended temperature ranges.
FAQ
What is the output voltage tolerance of the ADR02AUJ-R2 over temperature?
The ADR02AUJ-R2 maintains a 5.000 V nominal output with ±0.1% initial accuracy (±5 mV) and a maximum temperature coefficient of 9 ppm/°C across −40°C to +125°C. This results in a total output variation of ≤±0.9 mV over full temperature range, verified per Table 3 in Rev. S datasheet. The ADR02AUJ-R2 achieves this using laser-trimmed bandgap architecture and on-die thermal compensation.
Does the ADR02AUJ-R2 require an input or output capacitor for stability?
No - the ADR02AUJ-R2 is internally compensated and requires no external input or output capacitors for stability, as explicitly stated in the Features and General Description sections of the Rev. S datasheet. This eliminates capacitor-related layout dependencies and simplifies design in space-constrained applications such as PCMCIA cards and modular sensors.
Can the TEMP pin of the ADR02AUJ-R2 be used for accurate temperature measurement?
Yes - the TEMP pin of the ADR02AUJ-R2 provides a calibrated 550 mV output at 25°C with a linear sensitivity of 1.96 mV/°C across −40°C to +125°C. When digitized by a 12-bit ADC with 2.5 V reference, it delivers ±0.5°C resolution, enabling reliable on-chip thermal monitoring without additional components. This functionality is documented in Tables 3 and 4 of the Rev. S datasheet.
What is the maximum load current supported by the ADR02AUJ-R2?
The ADR02AUJ-R2 delivers up to 10 mA of continuous output current while maintaining specified accuracy and regulation performance. Load regulation is characterized at 0 mA to 10 mA in Table 3 (40–70 ppm/mA), and dropout voltage remains ≤2 V across this range. Exceeding 10 mA may degrade output stability and is not guaranteed per datasheet specifications.
Is the ADR02AUJ-R2 qualified for automotive applications?
Yes - the ADR02AUJ-R2 is offered in A grade, which is qualified for automotive applications per Analog Devices' Automotive Products section (Page 21, Rev. S). It is specified over −40°C to +125°C, undergoes AEC-Q100 stress testing, and supports use cases including auto battery monitoring and engine control module auxiliary references.
ADR02AUJ-R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Series:
- -
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Reference Type:
- -
- Output Type:
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Tolerance:
- -
- Temperature Coefficient:
- -
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
ADR02AUJ-R2 FAQ
1.How can I place an order for ADR02AUJ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR02AUJ-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 ADR02AUJ-R2 reliable?
The price and inventory of ADR02AUJ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR02AUJ-R2 is usually 5 days.
3.What payment methods are accepted for ADR02AUJ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR02AUJ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR02AUJ-R2?
ADR02AUJ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR02AUJ-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 ADR02AUJ-R2?
For technical support, including ADR02AUJ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR02AUJ-R2 requirements.
6.How does Aetrix verify that ADR02AUJ-R2 is sourced from the original manufacturer or authorized distributors?
All ADR02AUJ-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 ADR02AUJ-R2 meets industry standards.
7.What is the process for return or replacement of ADR02AUJ-R2?
All ADR02AUJ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADR02AUJ-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 ADR02AUJ-R2 part is unused and in its original packaging.
Return procedure for ADR02AUJ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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