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Analog Devices Inc. ADR525BRTZ-REEL7
- Part No.:
- ADR525BRTZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADR525BRTZ-REEL7.pdf
- Description:
- IC VREF SHUNT 0.2% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,213
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Product details
Overview
ADR525BRTZ-REEL7 from Analog Devices is a high-precision shunt voltage reference delivering 2.5 V output with ±0.2% initial accuracy, 40 ppm/°C max temperature coefficient, and 18 μV p-p (0.1 Hz to 10 Hz) output voltage noise. It operates from 50 μA to 15 mA over −40°C to +85°C and is used in precision data acquisition systems requiring stable, low-noise reference voltages.
For engineers reviewing the ADR525BRTZ-REEL7 datasheet, ADR525BRTZ-REEL7 pinout, ADR525BRTZ-REEL7 application, or ADR525BRTZ-REEL7 equivalent, this page provides verified technical context, package mapping, real-world use cases, and validated alternative options for industrial and battery-powered designs.
Technical Context
The ADR525BRTZ-REEL7 implements a bandgap-based shunt reference architecture with curvature-compensated ΔVBE and VBE summation to achieve low temperature drift. Its trim terminal enables ±0.5% output adjustment without degrading tempco performance.
It requires no external capacitor for stability and remains functional across any capacitive load. The device supports both positive and negative precision reference configurations via external bias resistor selection and stacking capability for user-defined output voltages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V ±5 mV at 25°C - defines system ADC full-scale or DAC reference point with sub-0.2% error budget. |
| Initial Accuracy | ±0.2% - ensures ≤5 mV absolute error before calibration, critical for 12-bit+ measurement systems. |
| Tempco | 40 ppm/°C max (−40°C to +85°C) - contributes ≤±0.85 mV drift over full industrial range. |
| Voltage Noise | 18 μV p-p (0.1 Hz to 10 Hz) - limits resolution loss in low-frequency precision measurements. |
| Operating Current | 50 μA to 15 mA - enables ultra-low-power operation in battery devices while supporting high-speed SAR ADC biasing. |
| Trim Range | ±0.5% via TRIM pin - allows correction of system-level gain/offset errors without redesigning feedback networks. |
| Package | SOT-23-3 (RT-3) - surface-mount compatible with standard pick-and-place, footprint matches LM4040/LM4050. |
Pinout & Package
ADR525BRTZ-REEL7 is housed in a 3-lead SOT-23-3 (RT-3) package per JEDEC TO-236-AB, with 2.00 mm × 1.25 mm body size, 0.95 mm height, and 0.65 mm lead pitch. Pin 1 is marked with a dot or beveled edge.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Anode / Reference Output | Connects to load and bias resistor; sets reference node voltage at 2.5 V under regulation. |
| V− | Cathode / Ground Return | Return path for reference current; must be tied to system ground or negative rail in inverted configuration. |
| TRIM | Adjustment Terminal | Accepts external potentiometer or DAC to fine-tune output voltage ±0.5% without affecting tempco. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow operating current | 50 μA minimum enables >10-year battery life in portable instrumentation with periodic wake-up sampling. |
| No external capacitor required | Guaranteed stability with any capacitive load simplifies layout and eliminates risk of oscillation in noisy environments. |
| Pin compatibility with LM4040/LM4050 | Direct drop-in replacement in existing designs using same SOT-23-3 footprint and biasing topology. |
| Trim-enabled system calibration | TRIM pin supports closed-loop trimming of sensor signal chains or ADC offset/gain errors without firmware changes. |
| Stackable for custom voltages | Multiple units can be series-connected to generate precise higher or inverted reference voltages (e.g., ±7.5 V). |
Applications
| Portable Data Loggers | Automotive Battery Monitoring |
|---|---|
Use Scenario: Continuous voltage/current logging in handheld environmental sensors powered by coin-cell batteries. IC Role / Device Role / Timing Role: Shunt reference providing stable 2.5 V reference for 16-bit sigma-delta ADC during low-duty-cycle sampling. Use Value: 50 μA min operating current extends battery life beyond 5 years; ±0.2% accuracy maintains traceable measurement integrity across temperature swings. |
Use Scenario: Real-time monitoring of 12 V lead-acid and 48 V Li-ion traction battery packs in EV auxiliary systems. IC Role / Device Role / Timing Role: Precision reference for isolated analog front-end measuring cell voltage differentials with <10 mV error budget. Use Value: 40 ppm/°C tempco ensures <±1 LSB error over −40°C to +85°C ambient, meeting ASIL-B functional safety requirements. |
| Industrial Process Transmitters | Energy Metering IC Calibration |
Use Scenario: 4–20 mA loop-powered pressure/temperature transmitters deployed in oil & gas field equipment. IC Role / Device Role / Timing Role: Primary voltage reference for microcontroller-based signal conditioning and HART modulation circuitry. Use Value: TRIM pin enables factory calibration to compensate for PCB trace resistance and op-amp input offset, achieving <0.1% total unadjusted error. |
Use Scenario: Calibration reference for polyphase energy metering SoCs (e.g., ADE78xx) during production test and field recalibration. IC Role / Device Role / Timing Role: Stable 2.5 V source for internal ADC reference and metrology-grade voltage channel scaling. Use Value: 18 μV p-p low-frequency noise prevents quantization uncertainty in active/reactive energy accumulation over 10-second windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR525BKS-REEL7 | Same electrical specs but in SC70 (KS-3) package - 1.00 mm × 0.80 mm vs. SOT-23-3's 2.00 mm × 1.25 mm. | Better suited for ultra-dense PCB layouts where board area is constrained; thermal resistance θJA = 580.5°C/W vs. 270°C/W for SOT-23-3. | Select ADR525BKS-REEL7 only when space savings outweigh thermal performance trade-offs in thermally isolated sections. |
| LM4040C25IDCKR | ±0.5% initial accuracy (vs. ±0.2%), 100 ppm/°C tempco (vs. 40 ppm/°C), 25 μV p-p noise (vs. 18 μV p-p); same SOT-23-3 pinout. | Acceptable for cost-sensitive 10–12-bit systems where tighter accuracy/noise not required; lacks TRIM pin. | Choose LM4040C25IDCKR for legacy designs needing second-source availability without layout change, accepting relaxed spec margins. |
Compared with ADR525BRTZ-REEL7, ADR525BKS-REEL7 offers identical performance in a smaller footprint but higher thermal resistance, while LM4040C25IDCKR provides pin-compatible fallback with measurable degradation in accuracy, stability, and noise-making ADR525BRTZ-REEL7 optimal for new high-fidelity designs.
Availability
ADR525BRTZ-REEL7 is available at Aetrix Electronics and suitable for portable instrumentation, automotive battery management, and industrial process control requiring stable component supply with RoHS-compliant packaging and full traceability.
Supply support for ADR525BRTZ-REEL7 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 ADR525BRTZ-REEL7 belongs to the ADR5xx family of precision shunt references designed specifically for space-constrained, low-power, high-accuracy measurement systems in industrial, automotive, and portable applications.
FAQ
What is the maximum operating current for ADR525BRTZ-REEL7?
The ADR525BRTZ-REEL7 supports up to 15 mA of reverse current. Exceeding this value risks permanent damage, as specified in Absolute Maximum Ratings. Operation within 50 μA to 15 mA ensures full compliance with all electrical characteristics across −40°C to +85°C.
Does ADR525BRTZ-REEL7 require an external capacitor for stability?
No, the ADR525BRTZ-REEL7 is internally compensated and remains stable with any capacitive load. Unlike older shunt references, it does not require an external capacitor between V+ and V− terminals - simplifying design and improving reliability in variable-load conditions.
Can ADR525BRTZ-REEL7 be used to generate a negative reference voltage?
Yes, ADR525BRTZ-REEL7 can configure a precise −2.5 V reference by connecting V− to the system's positive supply and V+ to ground through a bias resistor. This inversion leverages its shunt topology and is documented in the Applications section of the datasheet.
What is the purpose of the TRIM pin on ADR525BRTZ-REEL7?
The TRIM pin on ADR525BRTZ-REEL7 allows adjustment of the output voltage over a ±0.5% range using an external potentiometer or DAC. This feature enables correction of system-level errors such as op-amp offset or resistor tolerance without altering the core reference design.
Is ADR525BRTZ-REEL7 pin-compatible with LM4040 series devices?
Yes, ADR525BRTZ-REEL7 uses the same SOT-23-3 (RT-3) package and pinout as LM4040/LM4050 devices: Pin 1 = V+, Pin 2 = V−, Pin 3 = TRIM (functionally equivalent to cathode in LM4040, but unused). No PCB changes are needed for direct replacement.
ADR525BRTZ-REEL7 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:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 40ppm/°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
ADR525BRTZ-REEL7 FAQ
1.How can I place an order for ADR525BRTZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR525BRTZ-REEL7 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 ADR525BRTZ-REEL7 reliable?
The price and inventory of ADR525BRTZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR525BRTZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADR525BRTZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR525BRTZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR525BRTZ-REEL7?
ADR525BRTZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR525BRTZ-REEL7 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 ADR525BRTZ-REEL7?
For technical support, including ADR525BRTZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR525BRTZ-REEL7 requirements.
6.How does Aetrix verify that ADR525BRTZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADR525BRTZ-REEL7 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 ADR525BRTZ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADR525BRTZ-REEL7?
All ADR525BRTZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADR525BRTZ-REEL7, 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 ADR525BRTZ-REEL7 part is unused and in its original packaging.
Return procedure for ADR525BRTZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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