My Inquiry
My Account
Analog Devices Inc. ADR02BUJ-R2
- Part No.:
- ADR02BUJ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADR02BUJ-R2.pdf
- Description:
- IC VREF SERIES PREC 5V TSOT-23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,886
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADR02BUJ-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 µVp-p (0.1 Hz to 10 Hz) low noise, and 10 mA output current. It operates from 7.0 V to 36.0 V input and supports precision data acquisition systems requiring stable, low-drift references.
For engineers reviewing the ADR02BUJ-R2 datasheet, ADR02BUJ-R2 pinout, ADR02BUJ-R2 application, or ADR02BUJ-R2 equivalent, this device delivers verified performance in high-resolution ADC biasing, industrial process control feedback loops, and automotive battery monitoring where supply headroom and thermal stability are critical design constraints.
Technical Context
The ADR02BUJ-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 within ±0.5% range using an external resistor divider.
It requires no external capacitor for stability, supports wide-input operation down to 7.0 V, and maintains 70 ppm/mA load regulation over −40°C to +125°C at 10 mA output. The TSOT-5 package provides 230°C/W junction-to-ambient thermal resistance, optimized for space-constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V ±5 mV (A grade, 25°C); enables direct interface with 5 V ADC reference inputs without scaling. |
| Initial Accuracy | ±0.1% (±5 mV); eliminates need for system-level calibration in factory-trimmed instrumentation. |
| Temp Coefficient | 9 ppm/°C max (TSOT, −40°C to +125°C); ensures ≤0.9 mV drift across full industrial temperature range. |
| Voltage Noise | 10 µVp-p, 0.1 Hz–10 Hz; preserves ENOB in 18-bit+ SAR and delta-sigma converters. |
| Supply Range | 7.0 V to 36.0 V; accommodates unregulated 12 V/24 V rails common in industrial and automotive power domains. |
| Output Current | 10 mA; drives multiple op-amp bias networks or ADC reference buffers without external gain stage. |
| Quiescent Current | 0.65–1.0 mA; enables low-power operation in battery-backed sensor nodes and portable test equipment. |
Pinout & Package
ADR02BUJ-R2 uses the 5-lead TSOT (UJ-5) surface-mount package, measuring 2.1 mm × 1.6 mm × 0.55 mm, with exposed pad for thermal enhancement. Pin 1 is marked by a dot; pin numbering follows standard TSOT orientation (counterclockwise from mark).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 7.0–36.0 V; dropout voltage remains ≤2 V up to 10 mA load. |
| GND | Analog ground reference | Must be connected to clean system AGND plane; separates reference return from digital or power return paths. |
| VOUT | Precision 5.0 V output | Low-impedance source for ADC, DAC, or comparator reference; stable under 10 mA dynamic load. |
| TRIM | Voltage adjustment node | Connects to external resistor network for ±0.5% fine-tuning; open-circuit default yields nominal 5.000 V. |
| TEMP | Temperature sensor output | Provides 550 mV @ 25°C with 1.96 mV/°C slope; enables on-chip temperature monitoring without external sensor. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Guaranteed stability with 0 nF load capacitance; simplifies layout and reduces BOM count in compact designs. |
| Ultracompact TSOT-5 package | 2.1 mm × 1.6 mm footprint; saves >60% board area vs. SOIC-8 while maintaining full spec performance. |
| Dedicated TEMP pin | Monitors die temperature with ±1°C accuracy over −40°C to +125°C; enables thermal derating or compensation algorithms. |
| Pin-compatible with REF02 | TSOT-5 variant matches REF02's functional pinout; allows drop-in upgrade path for legacy designs targeting improved drift and noise. |
| Automotive-grade A grade option | Qualified per AEC-Q100 Grade 1 (−40°C to +125°C); supports battery monitoring and engine control modules. |
Applications
| High-Resolution Data Acquisition | Industrial Process Control |
|---|---|
Use Scenario: 24-bit delta-sigma ADC front-end in weigh scale or pressure transducer signal conditioning. IC Role / Device Role / Timing Role: Provides ultra-stable 5.0 V reference for ADC VREF input, directly determining full-scale accuracy and linearity. Use Value: 9 ppm/°C tempco and 10 µVp-p noise limit measurement uncertainty to <0.001% FS across temperature, eliminating recalibration cycles. |
Use Scenario: Feedback reference in 4–20 mA loop transmitter for flow or level sensors in chemical plants. IC Role / Device Role / Timing Role: Sets precise current-setpoint voltage for DAC-controlled current source; defines loop accuracy baseline. Use Value: ±0.1% initial accuracy and 70 ppm/mA load regulation ensure <0.1% loop error over full 4–20 mA range and supply variations. |
| Auto Battery Monitoring | PCMCIA Card Power Management |
Use Scenario: Voltage reference for microcontroller ADC measuring 12 V lead-acid battery state-of-charge in telematics units. IC Role / Device Role / Timing Role: Supplies stable 5.0 V reference to MCU's internal ADC; enables accurate battery voltage digitization despite varying input rail. Use Value: 7.0–36.0 V operating range covers cold-crank (6.5 V) to load-dump (35 V) events; 125°C rating supports under-hood placement. |
Use Scenario: Reference for voltage supervisor and power sequencing logic in legacy PCMCIA memory cards. IC Role / Device Role / Timing Role: Generates precise threshold for 3.3 V/5.0 V power-good detection and reset assertion timing. Use Value: Low quiescent current (0.65 mA) extends card standby life; TSOT-5 size fits tight card-edge connector zones. |
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 tempco (A grade); same 5.0 V output and pinout as REF02. | Better thermal stability but larger footprint; suited for lab equipment or non-space-constrained industrial controllers. | Select when lower drift (<3 ppm/°C) outweighs board area constraints and SOIC is acceptable. |
| REF02CSA+ | 5-lead SOIC package; ±0.2% initial accuracy; 25 ppm/°C max tempco; no TEMP or TRIM pins. | Lacks temperature sensing and trimming capability; lower accuracy limits use in metrology-grade systems. | Select only for cost-sensitive, non-critical biasing where 0.2% tolerance and no trim/temp features suffice. |
Compared with ADR02BUJ-R2, the ADR02ARZ-REEL7 offers superior temperature stability in SOIC but sacrifices miniaturization, while the REF02CSA+ trades accuracy, trim, and temperature sensing for lower unit cost-making ADR02BUJ-R2 optimal for space-constrained, high-accuracy embedded systems requiring on-die thermal insight.
Availability
ADR02BUJ-R2 is available at Aetrix Electronics and suitable for precision data acquisition systems, industrial process control transmitters, and automotive battery monitoring circuits requiring stable component supply with guaranteed long-term availability.
Supply support for ADR02BUJ-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 ADR02BUJ-R2 belongs to the ADR0x family of ultracompact precision voltage references designed for space-constrained, high-accuracy applications including instrumentation, industrial automation, and automotive subsystems.
FAQ
What is the maximum operating temperature range for the ADR02BUJ-R2?
The ADR02BUJ-R2 is specified over the extended industrial temperature range of −40°C to +125°C. This rating applies to all electrical characteristics in the datasheet, including output voltage accuracy, temperature coefficient, and load regulation. The TSOT-5 package's thermal resistance (θJA = 230°C/W) supports reliable operation at full ambient temperature when mounted on standard FR-4 PCB with adequate copper pour.
Does the ADR02BUJ-R2 require an external output capacitor for stability?
No, the ADR02BUJ-R2 is internally compensated and stable with 0 nF output capacitance. Unlike many older references, it does not require an external capacitor on the VOUT pin to prevent oscillation or improve transient response. This simplifies layout and eliminates capacitor-related aging or ESR effects that could degrade long-term stability.
How is the TEMP pin used in the ADR02BUJ-R2?
The TEMP pin on the ADR02BUJ-R2 outputs a voltage proportional to die temperature: 550 mV at 25°C with a sensitivity of 1.96 mV/°C. It can be connected directly to an ADC input to monitor IC junction temperature for thermal management or compensation. No external components are needed-just a high-impedance ADC channel with appropriate sampling rate to resolve sub-degree changes.
What is the minimum input voltage required for the ADR02BUJ-R2 to regulate properly?
The ADR02BUJ-R2 requires a minimum input voltage of 7.0 V to maintain regulation at full 10 mA load. At lighter loads, regulation is maintained down to ~6.5 V due to its 2 V dropout voltage specification. Below 7.0 V, output voltage drops linearly with input; operation below 6.0 V is outside absolute maximum ratings and may cause undefined behavior.
Is the ADR02BUJ-R2 pin-compatible with the REF02 voltage reference?
Yes-the ADR02BUJ-R2 in TSOT-5 package is functionally and pinout-compatible with the REF02 in the same 5-lead package. Both share identical VIN, GND, VOUT, TRIM, and TEMP pin assignments and functions. However, ADR02BUJ-R2 improves upon REF02 with tighter initial accuracy (±0.1% vs ±0.2%), lower noise (10 µVp-p vs 20 µVp-p), and enhanced temperature coefficient (9 ppm/°C max vs 25 ppm/°C max).
ADR02BUJ-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
ADR02BUJ-R2 FAQ
1.How can I place an order for ADR02BUJ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR02BUJ-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 ADR02BUJ-R2 reliable?
The price and inventory of ADR02BUJ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR02BUJ-R2 is usually 5 days.
3.What payment methods are accepted for ADR02BUJ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR02BUJ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR02BUJ-R2?
ADR02BUJ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR02BUJ-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 ADR02BUJ-R2?
For technical support, including ADR02BUJ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR02BUJ-R2 requirements.
6.How does Aetrix verify that ADR02BUJ-R2 is sourced from the original manufacturer or authorized distributors?
All ADR02BUJ-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 ADR02BUJ-R2 meets industry standards.
7.What is the process for return or replacement of ADR02BUJ-R2?
All ADR02BUJ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADR02BUJ-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 ADR02BUJ-R2 part is unused and in its original packaging.
Return procedure for ADR02BUJ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADR02BUJ-R2 Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
