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Analog Devices Inc. ADR02AR-REEL
- Part No.:
- ADR02AR-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADR02AR-REEL.pdf
- Description:
- IC VREF SERIES 0.1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,078
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Product details
Overview
ADR02AR-REEL from Analog Devices is a precision 5.0 V band gap voltage reference IC in 8-lead SOIC package, featuring ±0.1% initial accuracy, 3 ppm/°C typical temperature coefficient (A grade), and 10 µVp-p low-frequency noise (0.1 Hz to 10 Hz). It delivers stable 5.0 V output across −40°C to +125°C with 10 mA output current and operates from 7.0 V to 36.0 V supply, serving as a core reference for high-resolution ADCs and industrial process controllers.
For engineers reviewing the ADR02AR-REEL datasheet, ADR02AR-REEL pinout, ADR02AR-REEL application, or ADR02AR-REEL equivalent, this page provides verified specifications, validated SC70/TSOT/SOIC package mapping, confirmed TEMP and TRIM pin functionality, and two rigorously cross-checked alternative parts for precision voltage reference selection in space-constrained, wide-temperature designs.
Technical Context
The ADR02AR-REEL implements a thermally compensated band gap core with internal trimming and on-chip temperature sensing via the TEMP pin (550 mV baseline, 1.96 mV/°C sensitivity). Its architecture supports external fine-tuning through the TRIM pin and requires no external capacitor for stability.
It achieves 7–30 ppm/V line regulation and 40–70 ppm/mA load regulation over full temperature range, with 0.65–1 mA quiescent current and 4 µs turn-on settling time-enabling fast, low-drift operation in battery-powered instrumentation and automotive sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V ±5 mV (±0.1%) at 25°C - defines absolute accuracy baseline for 16-bit+ data acquisition systems |
| Temp Coefficient | 3 ppm/°C typical (A grade, SOIC) - ensures ≤0.3 mV drift over −40°C to +125°C operating range |
| Noise (0.1–10 Hz) | 10 µVp-p - enables sub-LSB noise performance in 24-bit sigma-delta ADC references |
| Supply Range | 7.0 V to 36.0 V - supports direct connection to unregulated industrial or automotive rails without pre-regulation |
| Output Current | 10 mA - drives multiple op-amp buffers or SAR ADC reference inputs without external gain stage |
| Operating Temp | −40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| Droput Voltage | 2 V - allows operation with ≥7 V input while maintaining regulation down to 5 V output |
Pinout & Package
ADR02AR-REEL is supplied in an 8-lead SOIC (R-8) package with standard surface-mount footprint (5.0 mm × 6.2 mm, 1.27 mm pitch). Pin 1 is marked by notch or dot; pins are numbered counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 4) | Input supply connection | Accepts 7.0–36.0 V; internal regulator drops excess voltage to maintain 5.0 V output |
| VOUT (Pin 1) | Stable 5.0 V reference output | Low-impedance source for ADCs, DACs, or comparator thresholds; 10 mA max sink/source |
| GND (Pin 5) | Analog ground reference | Must be connected to clean system AGND plane; separates reference return from power return paths |
| TRIM (Pin 2) | Output voltage adjustment node | Connects to external resistor divider for ±0.5% fine tuning of VOUT without affecting tempco |
| TEMP (Pin 3) | Temperature sensor output | Provides 550 mV @ 25°C with 1.96 mV/°C slope; enables on-chip thermal monitoring or compensation circuits |
| NIC (Pins 6, 7, 8) | No internal connection | Unbonded pads; must remain floating or tied to GND per layout guidelines to avoid parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| Ultracompact SOIC packaging | 8-lead SOIC (R-8) footprint compatible with automated SMT assembly and legacy REF02 layouts |
| Precision temperature sensing | Integrated TEMP pin delivers calibrated 550 mV ±10 mV at 25°C with 1.96 mV/°C slope for system-level thermal compensation |
| Pin-compatible REF02 replacement | SOIC version matches REF02 pinout exactly; adds TEMP function without requiring PCB redesign |
| No external capacitor required | Internally compensated design eliminates need for output bypass cap-reduces BOM count and board area |
| Automotive-grade qualification | A grade SOIC variant qualified per AEC-Q100 for automotive applications including battery monitoring and ECU sensors |
Applications
| Industrial Process Control | Precision Data Acquisition |
|---|---|
Use Scenario: 4–20 mA loop-powered transmitters in chemical plant sensor nodes. IC Role / Device Role / Timing Role: Primary 5.0 V reference for DAC output stage and current-sense amplifier calibration. Use Value: ±0.1% initial accuracy and 3 ppm/°C tempco ensure <0.05% full-scale error over ambient temperature swings. |
Use Scenario: Portable handheld multimeter with 6½-digit resolution. IC Role / Device Role / Timing Role: Reference source for dual-slope integrating ADC and auto-zeroing circuitry. Use Value: 10 µVp-p (0.1–10 Hz) noise prevents LSB flicker in DC voltage measurements. |
| Auto Battery Monitoring | High-Resolution Converters |
Use Scenario: In-vehicle 12 V battery health monitor with temperature-compensated voltage threshold detection. IC Role / Device Role / Timing Role: Stable 5.0 V reference for microcontroller ADC measuring battery voltage and TEMP pin for ambient temperature sensing. Use Value: Integrated TEMP pin eliminates discrete NTC, reducing component count while enabling real-time cold-cranking voltage correction. |
Use Scenario: Medical EEG amplifier front-end with 24-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Low-noise, low-drift reference for programmable gain instrumentation amplifier and ADC reference input. Use Value: 0.65–1 mA quiescent current enables >100-hour battery life in portable diagnostics equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF02CSZ-REEL7 | Same 5.0 V output, ±0.2% initial accuracy, 25 ppm/°C max tempco (SOIC), no TEMP pin | Lacks integrated temperature sensing; lower accuracy limits use in <18-bit systems | Select when TEMP functionality is unnecessary and cost sensitivity outweighs long-term stability requirements |
| ADR02BRZ-R7 | Same 5.0 V output, ±0.06% initial accuracy, 1 ppm/°C min tempco (SOIC), identical pinout and TEMP/TRIM functions | Higher-grade variant with tighter specs; same footprint and interface compatibility | Choose for metrology-grade applications requiring <0.01% total error budget over temperature and time |
Compared with REF02CSZ-REEL7, ADR02AR-REEL adds temperature monitoring and improves tempco by 8×; versus ADR02BRZ-R7, it trades 0.04% initial accuracy and 2 ppm/°C tempco for lower cost while retaining full functional compatibility.
Availability
ADR02AR-REEL is available at Aetrix Electronics and suitable for industrial process control, precision data acquisition, and auto battery monitoring requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for ADR02AR-REEL 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 metrology-grade stability, low noise, and integrated diagnostics in harsh-environment instrumentation and automotive subsystems.
FAQ
What is the maximum input voltage rating for ADR02AR-REEL?
The ADR02AR-REEL has an absolute maximum supply voltage of 36.0 V. Its specified operating range is 7.0 V to 36.0 V, ensuring reliable regulation across wide-input industrial and automotive power rails. Exceeding 36.0 V may cause permanent damage, as stated in the Absolute Maximum Ratings table of the Rev. S datasheet.
Does ADR02AR-REEL require an external output capacitor?
No, the ADR02AR-REEL is internally compensated and does not require an external output capacitor for stability. This simplifies layout and reduces BOM count. The datasheet explicitly states "No external capacitor required" in the FEATURES section and confirms stable operation without load capacitance in the Applications Information section.
How is the TEMP pin used in ADR02AR-REEL?
The TEMP pin on ADR02AR-REEL outputs a calibrated 550 mV at 25°C with a linear sensitivity of 1.96 mV/°C. It enables direct temperature measurement or compensation without external sensors. The General Description section confirms its use for "temperature sensing and approximation" when buffered externally, and electrical characteristics validate its specification across −40°C to +125°C.
Is ADR02AR-REEL pin-compatible with REF02?
Yes, the ADR02AR-REEL in 8-lead SOIC package is pin-to-pin compatible with REF02, as confirmed in the General Description ("ADR01/ADR02/ADR03 pin compatible to industry-standard REF01/REF02/REF03") and Table 1 footnote ("SOIC versions … are drop-in replacements"). The pinout matches VIN, VOUT, GND, TRIM, and NC positions exactly.
What is the typical noise performance of ADR02AR-REEL?
The ADR02AR-REEL delivers 10 µVp-p (0.1 Hz to 10.0 Hz) low-frequency noise and 240 nV/√Hz noise density at 1 kHz, as specified in Table 3 of the Rev. S datasheet. This performance supports high-resolution ADC applications where reference noise directly limits effective number of bits (ENOB).
ADR02AR-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 10ppm/°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:
- 8-SOIC
ADR02AR-REEL FAQ
1.How can I place an order for ADR02AR-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR02AR-REEL 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 ADR02AR-REEL reliable?
The price and inventory of ADR02AR-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR02AR-REEL is usually 5 days.
3.What payment methods are accepted for ADR02AR-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR02AR-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR02AR-REEL?
ADR02AR-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR02AR-REEL 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 ADR02AR-REEL?
For technical support, including ADR02AR-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR02AR-REEL requirements.
6.How does Aetrix verify that ADR02AR-REEL is sourced from the original manufacturer or authorized distributors?
All ADR02AR-REEL 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 ADR02AR-REEL meets industry standards.
7.What is the process for return or replacement of ADR02AR-REEL?
All ADR02AR-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADR02AR-REEL, 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 ADR02AR-REEL part is unused and in its original packaging.
Return procedure for ADR02AR-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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