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Analog Devices Inc. ADR5041BKSZ-R2
- Part No.:
- ADR5041BKSZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADR5041BKSZ-R2.pdf
- Description:
- IC VREF SHUNT 0.1% SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,803
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Product details
Overview
ADR5041BKSZ-R2 from Analog Devices is a precision 2.5 V shunt voltage reference in SC70-3 package, featuring ±0.1% initial accuracy, 75 ppm/°C max temperature coefficient, and stable operation from 50 µA to 15 mA supply current. It serves as a high-stability voltage reference for ADC/DAC biasing, sensor excitation, and portable power monitoring circuits.
For engineers reviewing the ADR5041BKSZ-R2 datasheet, ADR5041BKSZ-R2 pinout, ADR5041BKSZ-R2 application, or ADR5041BKSZ-R2 equivalent, key selection criteria include low operating current, automotive-grade temperature range (−40°C to +125°C), ultrasmall SC70 footprint, and capacitor-free stability with any capacitive load.
Technical Context
The ADR5041BKSZ-R2 implements a bandgap-based shunt architecture that cancels intrinsic transistor VBE temperature drift via curvature-compensated current summation. Its output remains stable without external compensation capacitors across 0–1 µF load capacitance.
It operates as a two-terminal device requiring only an external bias resistor, delivering 2.5 V with 40 ppm hysteresis and 35 µs turn-on settling time. The design supports stacking for higher or negative reference voltages while maintaining traceable thermal performance over −40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V ±2.5 mV at 100 µA - enables 12-bit+ accuracy in 2.5 V-referenced data converters |
| Initial Accuracy | ±0.1% - corresponds to ±2.5 mV error, sufficient for precision instrumentation calibration |
| Temp Coefficient | ≤75 ppm/°C - contributes ≤188 µV drift over −40°C to +125°C span |
| Operating Current | 50 µA to 15 mA - supports ultra-low-power battery operation and high-current stability |
| Settling Time | 35 µs (CLOAD = 0) - allows fast power-up in duty-cycled sensor systems |
| Voltage Noise | 3.2 µVrms (0.1–10 Hz), 150 µVrms (10 Hz–10 kHz) - suitable for 16-bit SAR ADC reference |
| Dynamic Impedance | 0.2 Ω - minimizes load-induced voltage shift during transient current demand |
Pinout & Package
ADR5041BKSZ-R2 uses the 3-lead SC70 (KS-3) package per JEDEC MO-203AA, measuring 2.20 mm × 1.35 mm × 0.95 mm with 0.65 mm lead pitch. Pin 1 is V+, Pin 2 is V−, Pin 3 is T (thermal pad connection point, recommended to connect to V+).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Anode / Reference Output Terminal | Provides 2.5 V output; must be biased above cathode by external resistor to sustain regulation |
| V− | Cathode / Ground Reference Terminal | Serves as return path; connects to system ground or negative rail in floating configurations |
| T | Thermal Pad / Optional V+ Tie | Not electrically active; improves thermal dissipation when soldered to copper pour or connected to V+ |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable with 0–1 µF capacitive loads - eliminates BOM cost and layout area for decoupling |
| PIN-compatible with LM4040/LM4050 | Direct drop-in replacement in existing SOT-23/SC70 shunt reference designs - no PCB rework needed |
| Extended temperature range | Specified from −40°C to +125°C - supports under-hood automotive and industrial edge sensing |
| Low quiescent current | 50 µA minimum operating current - extends battery life in portable gas meters and handheld test equipment |
| Ultracompact SC70 package | 2.2 mm × 1.35 mm footprint - saves >50% board space vs. standard SOT-23 in space-constrained wearables |
Applications
| Portable Medical Sensors | Automotive Cabin Pressure Monitoring |
|---|---|
Use Scenario: Battery-powered wearable ECG front-end with 16-bit ADC sampling at 1 kSPS. IC Role / Device Role / Timing Role: Provides stable 2.5 V reference for ADC full-scale calibration and op amp biasing. Use Value: ±0.1% initial accuracy and 75 ppm/°C TC ensure <0.02% gain error over temperature, meeting ISO 13485 signal chain requirements. |
Use Scenario: HVAC pressure transducer module mounted near vehicle dashboard. IC Role / Device Role / Timing Role: Supplies precision excitation voltage to piezoresistive pressure sensor bridge. Use Value: Stable 2.5 V output over −40°C to +125°C ensures <±0.5% total pressure measurement error across full automotive ambient range. |
| Industrial Data Acquisition Modules | Energy Meter Reference Subsystem |
Use Scenario: DIN-rail-mounted 8-channel analog input module for PLC I/O expansion. IC Role / Device Role / Timing Role: Serves as common reference for multiple SAR ADCs sharing a single 2.5 V rail. Use Value: 0.2 Ω dynamic impedance prevents crosstalk-induced reference droop during simultaneous channel sampling. |
Use Scenario: Class 0.5 smart electricity meter with metrology-grade ADC and isolation barrier. IC Role / Device Role / Timing Role: Generates primary reference for polyphase energy measurement ASIC. Use Value: 3.2 µVrms low-frequency noise avoids introducing >0.01% RMS error into active/reactive energy calculations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040C25IDCKR | ±0.5% initial accuracy, 100 ppm/°C TC, 2.5 V, SC70-3 | Lower accuracy limits use in 14-bit+ systems; wider TC increases drift in wide-temp environments | Select when cost sensitivity outweighs precision requirements and ambient range stays within 0°C–70°C |
| ADR5041ARTZ-REEL7 | Same 2.5 V, ±0.1%, 75 ppm/°C specs but in SOT-23-3 (RT-3) package | Larger 2.90 mm × 1.30 mm footprint; higher θJA (270°C/W vs. 580.5°C/W) reduces thermal margin | Choose for legacy SOT-23 assembly lines or where thermal mass aids stability in high-pulse-load scenarios |
Compared with LM4040C25IDCKR and ADR5041ARTZ-REEL7, the ADR5041BKSZ-R2 delivers superior initial accuracy and tighter temperature coefficient in the smallest available footprint, making it optimal for next-generation portable and automotive systems where board space and parametric performance are jointly constrained.
Availability
ADR5041BKSZ-R2 is available at Aetrix Electronics and suitable for portable medical sensors, automotive cabin pressure monitoring, and industrial data acquisition modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADR5041BKSZ-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, with R&D and manufacturing operations worldwide.
The ADR504x family was designed specifically for space-constrained, battery-powered, and automotive-qualified applications demanding high initial accuracy, low temperature drift, and capacitor-free stability in sub-3 mm² packages.
FAQ
What is the maximum operating current for ADR5041BKSZ-R2?
The ADR5041BKSZ-R2 supports a maximum operating current of 15 mA, verified across −40°C to +125°C. This allows robust regulation under high-load conditions such as driving multiple op amps or charging sample-and-hold capacitors. Exceeding 15 mA risks exceeding absolute maximum ratings and may cause irreversible damage to the internal bandgap core.
Does ADR5041BKSZ-R2 require an external capacitor for stability?
No, the ADR5041BKSZ-R2 does not require an external capacitor for stability. Its internal design ensures unconditional stability with any capacitive load from 0 µF to 1 µF, as confirmed in the datasheet's Figure 14 and Applications Information section. Adding a capacitor may reduce high-frequency noise but is never necessary for loop stability.
Is ADR5041BKSZ-R2 qualified for automotive applications?
No, ADR5041BKSZ-R2 is not automotive-qualified. Only variants with "W" suffix (e.g., ADR5041WBRTZ-R7) are AEC-Q100 qualified and manufactured under automotive-specific process controls. The ADR5041BKSZ-R2 is rated for −40°C to +125°C operation but lacks automotive reliability reporting and controlled lot traceability.
What is the purpose of the T pin on ADR5041BKSZ-R2?
The T pin on ADR5041BKSZ-R2 is a thermal pad with no electrical function. Per datasheet Note 1, it is recommended to connect this pin to V+ to improve thermal conduction and reduce junction temperature rise under sustained 15 mA operation. It must not be left floating in high-power-density layouts.
Can ADR5041BKSZ-R2 be used to generate a negative reference voltage?
Yes, ADR5041BKSZ-R2 can configure a precise negative reference by reversing its terminal connections: connect V− to system ground and V+ to a negative supply rail, then route the regulated 2.5 V output from V− relative to the negative rail. Figure 20 in the datasheet confirms this topology, noting that resistor temperature coefficient must be minimized to preserve accuracy.
ADR5041BKSZ-R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- SC-70, SOT-323
- Series:
- ADR504
- 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:
- ±0.1%
- Temperature Coefficient:
- 75ppm/°C
- Noise - 0.1Hz to 10Hz:
- 3.2µVrms
- Noise - 10Hz to 10kHz:
- 150µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 60 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
ADR5041BKSZ-R2 FAQ
1.How can I place an order for ADR5041BKSZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR5041BKSZ-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 ADR5041BKSZ-R2 reliable?
The price and inventory of ADR5041BKSZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR5041BKSZ-R2 is usually 5 days.
3.What payment methods are accepted for ADR5041BKSZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR5041BKSZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR5041BKSZ-R2?
ADR5041BKSZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR5041BKSZ-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 ADR5041BKSZ-R2?
For technical support, including ADR5041BKSZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR5041BKSZ-R2 requirements.
6.How does Aetrix verify that ADR5041BKSZ-R2 is sourced from the original manufacturer or authorized distributors?
All ADR5041BKSZ-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 ADR5041BKSZ-R2 meets industry standards.
7.What is the process for return or replacement of ADR5041BKSZ-R2?
All ADR5041BKSZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADR5041BKSZ-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 ADR5041BKSZ-R2 part is unused and in its original packaging.
Return procedure for ADR5041BKSZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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