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Analog Devices Inc. ADR525ARTZ-R2
- Part No.:
- ADR525ARTZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADR525ARTZ-R2.pdf
- Description:
- IC VREF SHUNT 0.4% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,438
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Product details
Overview
ADR525ARTZ-R2 from Analog Devices is a high-precision shunt voltage reference delivering 2.5 V output with ±0.4% initial accuracy, 70 ppm/°C temperature coefficient, and 18 μVp-p (0.1 Hz to 10 Hz) output noise. It operates from 50 μA to 15 mA over −40°C to +85°C and is used in battery-powered instrumentation where stable, low-noise reference voltage is critical.
For engineers reviewing the ADR525ARTZ-R2 datasheet, ADR525ARTZ-R2 pinout, ADR525ARTZ-R2 application, or ADR525ARTZ-R2 equivalent, this device serves as a space-constrained, capacitor-free precision reference for data acquisition, portable power supplies, and automotive sensor signal conditioning-requiring no external compensation and supporting trim-adjustable outputs.
Technical Context
The ADR525ARTZ-R2 uses a bandgap-based shunt architecture with dual-transistor current-density compensation to achieve low temperature drift. Its trim terminal enables ±0.5% output adjustment without degrading temperature coefficient performance.
It functions as a two-terminal shunt device requiring only an external bias resistor, remains stable with any capacitive load, and delivers fast 2 μs turn-on settling time. The device supports stacking for higher-voltage references and negative-output configurations via reverse-bias topology.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V (Grade A: 2.490 V to 2.510 V at 25°C) |
| Initial Accuracy | ±0.4% (±10 mV), enabling direct use in 12-bit ADC reference paths without calibration |
| Temperature Coefficient | 70 ppm/°C max (−40°C to +85°C), limiting drift to ±175 ppm over full range |
| Voltage Noise | 18 μVp-p (0.1 Hz to 10 Hz), suitable for high-resolution 16-bit+ data acquisition |
| Operating Current Range | 50 μA to 15 mA - supports ultra-low-power sensor nodes and high-current DAC buffers |
| Trim Terminal Range | ±0.5% output adjustment capability, allowing system-level error correction without redesign |
| Turn-On Settling Time | 2 μs, enabling fast power cycling in duty-cycled measurement systems |
Pinout & Package
ADR525ARTZ-R2 is housed in a RoHS-compliant 3-lead SOT-23-3 (RT-3) package, measuring 2.80 mm × 2.10 mm × 1.12 mm, with gull-wing leads and 0.95 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Anode / Reference Output Terminal | Connects to load and bias resistor; defines 2.5 V reference node in shunt configuration |
| V− | Cathode / Ground Reference Terminal | Common return path; must be tied to system ground or negative rail in inverted configurations |
| TRIM | Adjustment Terminal | Accepts external potentiometer or digital resistor to fine-tune output voltage ±0.5% without affecting tempco |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable operation with any capacitive load - eliminates BOM cost and layout area for decoupling caps |
| Ultralow operating current | 50 μA minimum enables multi-year battery life in wireless sensor nodes |
| Pin-compatible with LM4040/LM4050 | Drop-in replacement for legacy designs using industry-standard shunt references |
| Trim-adjustable output | ±0.5% trimming range allows field calibration and compensation of system gain/offset errors |
| Industrial temperature range | −40°C to +85°C operation supports automotive under-hood and industrial control environments |
Applications
| Portable Instrumentation | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Handheld multimeter or portable DMM requiring stable 2.5 V reference for 16-bit SAR ADC. IC Role / Device Role / Timing Role: Shunt voltage reference providing excitation and scaling reference for analog front-end and ADC. Use Value: 18 μVp-p noise and 70 ppm/°C tempco ensure <0.01% measurement uncertainty across battery discharge and ambient temperature swings. |
Use Scenario: Engine control unit (ECU) monitoring oxygen sensor output with ratiometric ADC. IC Role / Device Role / Timing Role: Precision shunt reference supplying stable 2.5 V to ADC reference input and sensor excitation circuitry. Use Value: ±0.4% initial accuracy and −40°C to +85°C rating maintain sensor linearity and diagnostic integrity across thermal transients. |
| Low-Power Data Acquisition | Programmable Logic Controller (PLC) Analog Input Module |
Use Scenario: Wireless IoT node sampling thermocouple or RTD signals every 10 seconds. IC Role / Device Role / Timing Role: Low-quiescent-current shunt reference powering instrumentation amplifier and ADC during active measurement windows. Use Value: 50 μA minimum operating current enables >5-year battery life when paired with sleep-mode microcontroller and duty-cycled sensing. |
Use Scenario: Industrial PLC analog input card digitizing 4–20 mA loop signals with 14-bit resolution. IC Role / Device Role / Timing Role: Primary reference source for precision op-amp gain stages and successive-approximation ADC reference buffer. Use Value: TRIM pin allows factory calibration to compensate for PCB trace resistance and component tolerances, achieving <0.1% total unadjusted error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR525BRTZ-R2 | ±0.2% initial accuracy (vs. ±0.4%), 40 ppm/°C tempco (vs. 70 ppm/°C), same SOT-23-3 package and pinout | Better stability for 14–16-bit metrology-grade systems; tighter tolerance reduces need for post-calibration | Select ADR525BRTZ-R2 when long-term accuracy and lower drift outweigh cost sensitivity. |
| LM4040C25IDCKR | ±0.5% initial accuracy, 100 ppm/°C tempco, no TRIM pin, same SOT-23-3 footprint | Limited adjustability and higher drift restrict use to non-critical 12-bit applications | Choose LM4040C25IDCKR only for cost-driven, non-precision designs where trim and low noise are unnecessary. |
Compared with ADR525ARTZ-R2, ADR525BRTZ-R2 offers superior accuracy and stability for high-end measurement, while LM4040C25IDCKR provides basic functionality at lower cost but sacrifices trim capability, noise performance, and thermal stability.
Availability
ADR525ARTZ-R2 is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor interfaces, and low-power data acquisition systems requiring stable component supply, RoHS compliance, and consistent reel-based delivery.
Supply support for ADR525ARTZ-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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control.
The ADR520/ADR525 series belongs to Analog Devices' precision voltage reference product line, designed specifically for space-constrained, low-power, high-accuracy applications in portable, automotive, and industrial instrumentation.
FAQ
What is the output voltage tolerance of the ADR525ARTZ-R2 at 25°C?
The ADR525ARTZ-R2 has a Grade A initial accuracy of ±0.4%, corresponding to a 2.5 V output tolerance of ±10 mV (2.490 V to 2.510 V) at 25°C. This specification is guaranteed over the full industrial temperature range and forms the basis for system-level calibration planning in precision data acquisition designs using the ADR525ARTZ-R2.
Does the ADR525ARTZ-R2 require an external capacitor for stability?
No, the ADR525ARTZ-R2 does not require an external capacitor for stability. Its internal design ensures unconditional stability with any capacitive load, eliminating the need for external bypass or compensation capacitors. This simplifies layout, reduces BOM count, and improves reliability in space-constrained applications such as handheld test equipment where the ADR525ARTZ-R2 is commonly deployed.
Can the ADR525ARTZ-R2 be used to generate a negative reference voltage?
Yes, the ADR525ARTZ-R2 can be configured as a negative precision reference by reversing its connection: tie V− to the system's positive rail and V+ to the desired negative output node, with the TRIM pin referenced accordingly. This topology is documented in the official datasheet Figure 20 and enables accurate −2.5 V generation for bipolar signal chains using the ADR525ARTZ-R2.
What is the purpose of the TRIM pin on the ADR525ARTZ-R2?
The TRIM pin on the ADR525ARTZ-R2 allows adjustment of the output voltage over a ±0.5% range using an external potentiometer or digital resistor. This feature enables system-level correction of gain/offset errors introduced by downstream components without altering the reference's temperature coefficient or noise performance - a key advantage in calibrated instrumentation leveraging the ADR525ARTZ-R2.
Is the ADR525ARTZ-R2 pin-compatible with the LM4040 series?
Yes, the ADR525ARTZ-R2 is pin-compatible with the LM4040 and LM4050 shunt voltage references in the SOT-23-3 package. Pin 1 (V+), Pin 2 (V−), and Pin 3 (TRIM) align functionally with the LM4040's anode, cathode, and NC (no-connect) positions - though the TRIM pin on the ADR525ARTZ-R2 adds adjustability absent in the LM4040, making it a functional upgrade in existing LM4040-based layouts.
ADR525ARTZ-R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.4%
- Temperature Coefficient:
- 70ppm/°C
- Noise - 0.1Hz to 10Hz:
- 18µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 50 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ADR525ARTZ-R2 FAQ
1.How can I place an order for ADR525ARTZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR525ARTZ-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 ADR525ARTZ-R2 reliable?
The price and inventory of ADR525ARTZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR525ARTZ-R2 is usually 5 days.
3.What payment methods are accepted for ADR525ARTZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR525ARTZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR525ARTZ-R2?
ADR525ARTZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR525ARTZ-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 ADR525ARTZ-R2?
For technical support, including ADR525ARTZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR525ARTZ-R2 requirements.
6.How does Aetrix verify that ADR525ARTZ-R2 is sourced from the original manufacturer or authorized distributors?
All ADR525ARTZ-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 ADR525ARTZ-R2 meets industry standards.
7.What is the process for return or replacement of ADR525ARTZ-R2?
All ADR525ARTZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADR525ARTZ-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 ADR525ARTZ-R2 part is unused and in its original packaging.
Return procedure for ADR525ARTZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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