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Analog Devices Inc. ADR02ARZ
- Part No.:
- ADR02ARZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADR02ARZ.pdf
- Description:
- IC VREF SERIES 0.1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,836
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Product details
Overview
ADR02ARZ from Analog Devices is a precision 5.0 V band gap voltage reference IC with ±0.1% initial accuracy, 3 ppm/°C typical temperature coefficient (8-lead SOIC, A grade), and 10 µVp-p low-frequency noise (0.1 Hz to 10 Hz). It operates from 7.0 V to 36.0 V input, delivers up to 10 mA output current, and supports −40°C to +125°C industrial temperature range - ideal for high-resolution ADC biasing in portable instrumentation.
For engineers reviewing the ADR02ARZ datasheet, ADR02ARZ pinout, ADR02ARZ application, or ADR02ARZ equivalent, key selection criteria include its SC70/TSOT/SOIC package flexibility, integrated TEMP pin for on-chip temperature monitoring (550 mV @ 25°C, 1.96 mV/°C), TRIM pin for output fine-tuning, and no external capacitor requirement for stable operation.
Technical Context
The ADR02ARZ implements a laser-trimmed band gap core with internal curvature correction, enabling ultra-low drift over temperature. Its architecture integrates a dedicated TEMP pin with calibrated voltage output and linear sensitivity, allowing direct use as a system-level temperature sensor without external components.
It features a high PSRR of −75 dB at 10 kHz, 4 µs turn-on settling time, and load regulation of 40–70 ppm/mA across −40°C to +125°C - confirming suitability for dynamic, multi-rail embedded systems where supply ripple and load transients must not perturb reference stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V nominal; tightly controlled to ±5 mV (±0.1%) at 25°C - ensures absolute accuracy for 16-bit+ data converters. |
| Tempco (A grade, SOIC) | 3 ppm/°C typical (−40°C to +125°C) - enables <±0.5 mV total drift over full industrial range. |
| Voltage Noise (0.1–10 Hz) | 10 µVp-p - minimizes quantization uncertainty in precision sigma-delta ADC front-ends. |
| Input Voltage Range | 7.0 V to 36.0 V - supports wide-input industrial power rails and battery-backed systems down to 7 V. |
| Output Current | 10 mA max - drives multiple op-amp buffers or SAR ADC references without external gain stages. |
| Quiescent Current | 0.65–1.0 mA - enables low-power operation in always-on sensor nodes and portable test equipment. |
| Long-Term Stability | 50 ppm over 1000 hours - guarantees calibration integrity in metrology-grade instruments. |
Pinout & Package
ADR02ARZ is available in 8-lead SOIC (R-8) package (JEDEC MS-012AC), with exposed pad option for thermal enhancement. Pin mapping is identical to industry-standard REF02.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Positive supply input | Accepts 7–36 V; dropout voltage ≤2 V ensures operation even with marginal rail headroom. |
| 2 (GND) | Analog ground reference | Must be connected to clean, low-impedance analog ground plane to preserve noise performance. |
| 3 (VOUT) | Precision 5.0 V output | Regulated output capable of sourcing/sinking up to ±10 mA; low impedance (<1 Ω) below 10 kHz. |
| 4 (TRIM) | Output voltage adjustment node | Allows ±0.5% fine-tuning via external resistor divider; enables system-level calibration. |
| 5 (TEMP) | Temperature-sensing output | Provides 550 mV at 25°C with 1.96 mV/°C slope - usable as standalone sensor or for temp-compensation algorithms. |
| 6–8 (NIC) | No internal connection | Unbonded pins; may be left floating or tied to GND for mechanical stability - no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Ultracompact packaging | Available in 5-lead SC70 (2.0 × 1.25 mm) and TSOT (2.1 × 1.6 mm), plus standard 8-lead SOIC - saves board space in dense PCB layouts. |
| Integrated temperature sensing | On-die TEMP pin delivers factory-calibrated 550 mV ±10 mV at 25°C with 1.96 mV/°C linearity - eliminates need for external thermistor or sensor IC. |
| No external capacitor required | Stable with zero output capacitance; avoids ESR-related instability and simplifies layout in noise-sensitive applications. |
| PIN-compatible upgrade path | SOIC version is drop-in replacement for REF02 - allows legacy design refresh without PCB revision. |
| Automotive qualification | A grade SOIC variant qualified per AEC-Q100 Grade 1 (−40°C to +125°C) - suitable for under-hood and ADAS reference circuits. |
Applications
| High-Resolution Data Acquisition | Precision Industrial Transmitters |
|---|---|
Use Scenario: 24-bit delta-sigma ADC front-end in portable calibrators and handheld DMMs. IC Role / Device Role / Timing Role: Primary voltage reference for ADC VREF input and PGA bias network. Use Value: 10 µVp-p low-frequency noise and 3 ppm/°C tempco ensure <±1 LSB error over temperature and time. |
Use Scenario: 4 mA to 20 mA loop-powered transmitter with HART modulation. IC Role / Device Role / Timing Role: Stable 5.0 V reference for DAC, sensor excitation, and current-loop regulation circuitry. Use Value: 10 mA output current and 7–36 V input range support full loop compliance while maintaining reference integrity during line transients. |
| Auto Battery Monitoring Systems | PCMCIA Card Power Management |
Use Scenario: Real-time 12 V battery voltage and temperature tracking in automotive ECUs. IC Role / Device Role / Timing Role: Dual-function device: 5.0 V reference for ADC and on-chip temperature sensor via TEMP pin. Use Value: Eliminates separate temperature sensor; 550 mV baseline + 1.96 mV/°C slope enables direct microcontroller ADC reading with <±1°C accuracy. |
Use Scenario: Low-profile PCMCIA memory or I/O card requiring precise 5.0 V rail for flash programming and interface logic. IC Role / Device Role / Timing Role: Compact, capacitor-free reference supplying regulated 5.0 V to EEPROM and level-shifters. Use Value: SC70 package (2.0 × 1.25 mm) fits tight card-edge constraints; no external caps reduce BOM count and footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF02AZ | Same 5.0 V output, ±0.2% initial accuracy, 25 ppm/°C max tempco (SOIC), no TEMP pin | Lacks integrated temperature sensing; lower accuracy and higher drift limit use in <18-bit systems | Select when cost sensitivity outweighs need for on-chip temp monitoring or ultra-low drift. |
| ADR02BRZ | Same SOIC package and pinout; B grade offers ±0.06% initial accuracy and 1 ppm/°C typical tempco (−40°C to +125°C) | Higher precision and lower drift justify use in metrology and calibration equipment where long-term stability is critical | Choose for applications demanding tighter initial tolerance and superior temperature performance without changing layout. |
Compared with REF02AZ, ADR02ARZ adds on-chip temperature sensing and improves initial accuracy by 2× and tempco by 8×; versus ADR02BRZ, it trades 0.04% initial tolerance and 2 ppm/°C tempco for lower cost while retaining full functional compatibility and pinout.
Availability
ADR02ARZ is available at Aetrix Electronics and suitable for precision data acquisition systems, industrial process control transmitters, and automotive battery monitoring requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for ADR02ARZ 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, with design and manufacturing operations worldwide.
The ADR02ARZ belongs to Analog Devices' precision voltage reference product line, engineered for applications demanding low drift, low noise, and high reliability in harsh industrial and automotive environments.
FAQ
What is the maximum input voltage rating for the ADR02ARZ?
The ADR02ARZ has an absolute maximum supply voltage rating of 36.0 V, with recommended operating range from 7.0 V to 36.0 V. Exceeding 36.0 V risks permanent damage. The device maintains specified performance across this full range, including stable 5.0 V output and low load regulation up to 10 mA, making it robust for unregulated industrial supplies and automotive battery variations.
Does the ADR02ARZ require an output capacitor for stability?
No, the ADR02ARZ is internally compensated and operates stably with zero output capacitance - a key differentiator from many older references. This eliminates capacitor-related phase margin concerns, reduces bill-of-materials count, and avoids degradation of noise performance caused by capacitor leakage or ESR. External capacitors may be added only for specific filtering needs, not for stability.
How is the TEMP pin on the ADR02ARZ used in practice?
The TEMP pin on the ADR02ARZ outputs 550 mV at 25°C with a linear sensitivity of 1.96 mV/°C, enabling direct temperature measurement using a single ADC channel. In practice, it's connected to a microcontroller's ADC input with no amplification or conditioning required. Calibration involves measuring the offset at one known temperature; subsequent readings yield accurate ambient or die temperature within ±1°C over −40°C to +125°C.
What is the purpose of the TRIM pin on the ADR02ARZ?
The TRIM pin on the ADR02ARZ allows fine adjustment of the output voltage within ±0.5% of nominal 5.0 V using an external resistor network. It connects to the internal band gap amplifier's feedback node; applying a small current via resistive divider shifts VOUT proportionally. This enables end-system calibration to compensate for PCB-level errors, ADC gain mismatch, or aging effects - critical in metrology and test equipment.
Is the ADR02ARZ pin-compatible with the REF02 series?
Yes, the 8-lead SOIC version of the ADR02ARZ is pin-to-pin compatible with the REF02 series, including identical VIN, GND, VOUT, TRIM, and NC pin assignments. It functions as a drop-in replacement with enhanced specifications: improved initial accuracy (±0.1% vs. ±0.2%), lower tempco (3 ppm/°C typical vs. 25 ppm/°C max), and added TEMP pin functionality - all without requiring PCB changes.
ADR02ARZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- 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
ADR02ARZ FAQ
1.How can I place an order for ADR02ARZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR02ARZ 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 ADR02ARZ reliable?
The price and inventory of ADR02ARZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR02ARZ is usually 5 days.
3.What payment methods are accepted for ADR02ARZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR02ARZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR02ARZ?
ADR02ARZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR02ARZ 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 ADR02ARZ?
For technical support, including ADR02ARZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR02ARZ requirements.
6.How does Aetrix verify that ADR02ARZ is sourced from the original manufacturer or authorized distributors?
All ADR02ARZ 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 ADR02ARZ meets industry standards.
7.What is the process for return or replacement of ADR02ARZ?
All ADR02ARZ units undergo pre-shipment inspection (PSI). If there is an issue with ADR02ARZ, 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 ADR02ARZ part is unused and in its original packaging.
Return procedure for ADR02ARZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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