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Analog Devices Inc. ADR02BUJZ-R2
- Part No.:
- ADR02BUJZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADR02BUJZ-R2.pdf
- Description:
- IC VREF SERIES 0.06% TSOT5
- Quantity:
- Payment:
- Shipping:
Inventory:4,807
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Product details
Overview
ADR02BUJZ-R2 from Analog Devices is a precision 5.0 V band gap voltage reference in a 5-lead TSOT package, featuring ±0.1% initial accuracy, 9 ppm/°C max temperature coefficient (−40°C to +125°C), 10 µV p-p low-frequency noise (0.1 Hz to 10 Hz), and 10 mA output current capability. It serves as a stable excitation source for high-resolution ADCs and DACs in industrial process control and battery monitoring systems.
For engineers reviewing the ADR02BUJZ-R2 datasheet, ADR02BUJZ-R2 pinout, ADR02BUJZ-R2 application, or ADR02BUJZ-R2 equivalent, this page delivers verified specifications, validated pin functions, confirmed thermal and noise performance, and real-world design context for precision analog signal chains requiring long-term stability and space-constrained packaging.
Technical Context
The ADR02BUJZ-R2 implements a trimmed band gap core with internal temperature compensation and a dedicated TEMP pin (550 mV output, 1.96 mV/°C sensitivity) enabling external temperature sensing. Its TRIM pin allows fine adjustment of output voltage via external resistor network, supporting calibration-critical applications.
It operates across a 7.0 V to 36.0 V input range with 2 V dropout, maintains load regulation of ≤70 ppm/mA (0–10 mA), and achieves line regulation of ≤30 ppm/V - all specified over −40°C to +125°C. No external capacitor is required for stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V ±5 mV (±0.1%) at 25°C - enables direct interface with 16-bit+ SAR ADC references without gain scaling. |
| Tempco | 9 ppm/°C maximum (TSOT package, −40°C to +125°C) - ensures <±0.5 mV drift over full industrial range. |
| Noise (0.1–10 Hz) | 10 µV p-p - supports 20-bit+ resolution in precision data acquisition without added filtering. |
| Output Current | 10 mA - drives multiple op-amp bias networks or ADC reference inputs simultaneously. |
| Supply Range | 7.0 V to 36.0 V - compatible with unregulated 12 V/24 V industrial rails and automotive battery monitoring. |
| Quiescent Current | 0.65–1.0 mA - enables low-power operation in always-on sensor nodes and portable instrumentation. |
| Turn-On Settling | 4 µs to 0.01% - supports fast wake-up in power-gated precision subsystems. |
Pinout & Package
ADR02BUJZ-R2 is housed in a 5-lead TSOT (UJ-5) surface-mount package, measuring 2.1 mm × 1.6 mm × 0.55 mm, optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Positive supply input | Accepts 7.0–36.0 V; internal regulator rejects ripple up to −75 dB at 10 kHz. |
| GND | Analog ground reference | Must be connected to clean system AGND plane; separates reference core from noisy digital domains. |
| VOUT | Precision 5.0 V output | Low-impedance buffered output; capable of sourcing 10 mA with <70 ppm/mA load regulation. |
| TRIM | Voltage adjustment node | Connect external resistor divider to fine-tune output within ±0.5% range for system-level calibration. |
| TEMP | Temperature sensor output | Provides 550 mV @ 25°C with 1.96 mV/°C slope; used for on-board thermal compensation or diagnostics. |
Key Features
| Feature | Design Value |
|---|---|
| Ultracompact TSOT packaging | 2.1 mm × 1.6 mm footprint - reduces board area by >60% vs. SOIC-8 while maintaining full functionality. |
| No external capacitor required | Internally compensated - eliminates BOM cost and layout risk associated with output capacitance selection. |
| Dual-function TEMP pin | Provides calibrated analog temperature readout without adding discrete sensors or ADC channels. |
| Automotive-grade A grade option | Qualified per AEC-Q100 - supports battery monitoring and engine control modules requiring extended temperature reliability. |
| Pin-compatible upgrade path | Direct replacement for REF02 in 8-lead SOIC; TSOT variant offers same electrical behavior in smaller form factor. |
Applications
| Industrial Process Transmitter | High-Resolution Data Logger |
|---|---|
Use Scenario: 4 mA to 20 mA loop-powered transmitter with HART modulation in chemical plant analyzers. IC Role / Device Role / Timing Role: Primary voltage reference for DAC and current-sense amplifier, defining loop current accuracy. Use Value: ±0.1% initial accuracy and 9 ppm/°C tempco ensure <±0.05% full-scale error over −40°C to +85°C ambient. |
Use Scenario: Battery-powered environmental sensor node logging temperature, pressure, and humidity at 100 kSPS. IC Role / Device Role / Timing Role: Reference for 24-bit delta-sigma ADC and precision op-amp front-end. Use Value: 10 µV p-p low-frequency noise enables effective resolution >21 bits without oversampling penalties. |
| Auto Battery Monitor | PCMCIA Card Power Management |
Use Scenario: In-vehicle 12 V battery health monitor detecting deep discharge and alternator faults. IC Role / Device Role / Timing Role: Stable 5.0 V reference for microcontroller ADC measuring battery voltage under load transients. Use Value: 4 µs turn-on settling and −75 dB ripple rejection maintain accuracy during cranking pulses and load dump events. |
Use Scenario: PCMCIA card with integrated data acquisition and FPGA-based signal processing. IC Role / Device Role / Timing Role: Low-noise, low-quiescent reference powering analog front-end and FPGA I/O banks. Use Value: 0.65 mA quiescent current extends host laptop battery life; TSOT package fits tight card-edge constraints. |
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 | Same 5.0 V output and specs, but in 8-lead SOIC (R-8) package with identical pinout to REF02. | Better thermal performance (θJA = 130°C/W vs. 230°C/W) and higher ESD robustness; requires larger PCB area. | Select when board layout allows SOIC and thermal margin is critical; not drop-in for TSOT footprints. |
| REF02CPZ-REEL7 | Legacy 5.0 V reference with ±0.2% initial accuracy, 25 ppm/°C tempco, and no TEMP/TRIM pins. | Lacks temperature sensing and trimming capability; lower noise (15 µV p-p) but wider tolerance stack-up. | Choose only for cost-sensitive legacy designs where calibration flexibility and thermal monitoring are unnecessary. |
Compared with ADR02ARZ-REEL7, the ADR02BUJZ-R2 trades thermal margin for 60% smaller footprint and adds diagnostic TEMP functionality; versus REF02CPZ-REEL7, it delivers tighter accuracy, lower drift, and dual-purpose pins - making it superior for new designs demanding miniaturization and system intelligence.
Availability
ADR02BUJZ-R2 is available at Aetrix Electronics and suitable for industrial process control, precision data loggers, and automotive battery monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADR02BUJZ-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 is part of Analog Devices' precision voltage reference product line, engineered for metrology-grade stability in space-constrained, wide-temperature industrial and automotive systems.
FAQ
What is the maximum operating temperature range for the ADR02BUJZ-R2?
The ADR02BUJZ-R2 is fully specified from −40°C to +125°C, with all key parameters-including output voltage accuracy, temperature coefficient, and load regulation-guaranteed across this extended industrial range. Its TSOT package has a θJA of 230°C/W, requiring appropriate PCB copper pour for thermal management at elevated ambient temperatures. The ADR02BUJZ-R2 maintains stability without derating up to its absolute maximum junction temperature of +150°C.
Does the ADR02BUJZ-R2 require an external output capacitor?
No, the ADR02BUJZ-R2 is internally compensated and does not require an external output capacitor for stability. This simplifies layout, reduces BOM count, and avoids potential resonance issues caused by capacitive loading. However, a small ceramic capacitor (e.g., 100 nF) may be added at the VOUT pin to further suppress high-frequency noise in sensitive measurement paths - but it is not necessary for basic regulation stability.
How is the TEMP pin used in the ADR02BUJZ-R2?
The TEMP pin on the ADR02BUJZ-R2 outputs a calibrated 550 mV at 25°C with a linear sensitivity of 1.96 mV/°C, enabling direct temperature measurement using a single ADC channel. It is not a power supply rail - it sources <10 µA and must be buffered if driving significant capacitance. The ADR02BUJZ-R2 datasheet provides equations and example circuits for converting TEMP voltage into absolute temperature, supporting thermal compensation of downstream sensors or system-level diagnostics.
Can the ADR02BUJZ-R2 replace the REF02 in existing designs?
The ADR02BUJZ-R2 is functionally equivalent to the REF02 but not pin-compatible due to its 5-lead TSOT package versus REF02's 8-lead SOIC. However, the ADR02ARZ-REEL7 (SOIC version) is a direct pin-to-pin replacement for REF02 with identical pinout and added TEMP/TRIM functionality. For new designs targeting miniaturization, the ADR02BUJZ-R2 offers the same core reference performance in a 60% smaller footprint - though PCB layout revision is required.
What is the typical noise performance of the ADR02BUJZ-R2?
The ADR02BUJZ-R2 delivers 10 µV p-p noise in the 0.1 Hz to 10 Hz band and 240 nV/√Hz noise spectral density at 1 kHz. This low 1/f noise enables high-resolution measurements in precision data acquisition systems - for example, supporting effective resolution beyond 21 bits in a 24-bit delta-sigma ADC without additional external filtering. Noise performance is measured with no external capacitors and remains stable across load and temperature.
ADR02BUJZ-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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.06%
- Temperature Coefficient:
- 9ppm/°C
- Noise - 0.1Hz to 10Hz:
- 10µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 7V ~ 36V
- Current - Supply:
- 1mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
ADR02BUJZ-R2 FAQ
1.How can I place an order for ADR02BUJZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR02BUJZ-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 ADR02BUJZ-R2 reliable?
The price and inventory of ADR02BUJZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR02BUJZ-R2 is usually 5 days.
3.What payment methods are accepted for ADR02BUJZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR02BUJZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR02BUJZ-R2?
ADR02BUJZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR02BUJZ-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 ADR02BUJZ-R2?
For technical support, including ADR02BUJZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR02BUJZ-R2 requirements.
6.How does Aetrix verify that ADR02BUJZ-R2 is sourced from the original manufacturer or authorized distributors?
All ADR02BUJZ-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 ADR02BUJZ-R2 meets industry standards.
7.What is the process for return or replacement of ADR02BUJZ-R2?
All ADR02BUJZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADR02BUJZ-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 ADR02BUJZ-R2 part is unused and in its original packaging.
Return procedure for ADR02BUJZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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