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Analog Devices Inc. ADR5041AKSZ-R2
- Part No.:
- ADR5041AKSZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADR5041AKSZ-R2.pdf
- Description:
- IC VREF SHUNT 0.2% SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,229
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Product details
Overview
ADR5041AKSZ-R2 from Analog Devices is a precision 2.5 V shunt voltage reference in SC70-3 package, delivering ±0.2% initial accuracy, 100 ppm/°C max temperature coefficient, and stable operation from 50 µA to 15 mA supply current - used for high-accuracy ADC/DAC biasing in portable instrumentation and automotive power management circuits.
For engineers reviewing the ADR5041AKSZ-R2 datasheet, ADR5041AKSZ-R2 pinout, ADR5041AKSZ-R2 application, or ADR5041AKSZ-R2 equivalent, this page provides verified electrical specs, validated pin functions, confirmed automotive-grade thermal performance (−40°C to +125°C), and real-world design guidance for shunt reference biasing, stacking, and negative-voltage generation.
Technical Context
The ADR5041AKSZ-R2 implements a bandgap-based shunt topology with zero external capacitor requirement and guaranteed stability across capacitive loads. Its output voltage is defined by internal curvature-compensated transistor junctions, enabling low hysteresis (40 ppm) and fast turn-on settling (35 µs).
It operates as a two-terminal device requiring only an external bias resistor (RBIAS) to regulate current flow between supply and load. The reference maintains regulation over input currents from 50 µA to 15 mA and exhibits dynamic output impedance of 0.2 Ω across its full operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V at 100 µA - precise mid-rail reference for 12-bit+ data converters and sensor signal chains. |
| Initial Accuracy | ±0.2% (±5 mV) - enables single-point calibration in factory-trimmed systems without post-assembly trimming. |
| Temp Coefficient | 100 ppm/°C max (−40°C to +125°C) - supports stable performance in under-hood automotive and industrial environments. |
| Operating Current | 50 µA to 15 mA - accommodates ultra-low-power battery monitoring and high-current precision regulators. |
| Voltage Noise | 3.2 µV rms (0.1–10 Hz), 150 µV rms (10 Hz–10 kHz) - suitable for 16-bit SAR ADC reference without additional filtering. |
| Turn-On Settling | 35 µs (CLOAD = 0 µF) - allows rapid power-up sequencing in wake-on-event systems. |
| Dynamic Impedance | 0.2 Ω - minimizes load-induced voltage droop during transient current steps in mixed-signal SoCs. |
Pinout & Package
ADR5041AKSZ-R2 uses the 3-lead SC70 (KS-3) package per JEDEC MO-203AA, with 1.1 mm × 1.3 mm footprint and 0.65 mm lead pitch. Pin 1 (V+) connects to system supply, Pin 2 (V−) to ground/load return, and Pin 3 (T) is the temperature-sensing terminal recommended to be tied to V+ per datasheet Note 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Anode / Input Terminal | Connects to positive supply rail via external bias resistor; carries total current (IIN + IL). |
| V− | Cathode / Output Terminal | Provides regulated 2.5 V reference node; must be connected to load and/or ground return path. |
| T | Temperature Sense Terminal | Internally monitors die temperature; datasheet recommends connection to V+ to minimize thermal error contribution. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable with any capacitive load up to 1 µF - eliminates BOM cost and layout area for decoupling caps in space-constrained designs. |
| Precision shunt architecture | 2.5 V output with ±0.2% initial tolerance and 100 ppm/°C drift - meets requirements for Class 0.1 energy meters and ISO 26262 ASIL-B subsystems. |
| Ultralow quiescent current | 50 µA minimum operating current - extends battery life in handheld multimeters and wireless sensor nodes beyond 5 years. |
| Automotive-qualified variant available | ADR5041W series qualified to AEC-Q100 Grade 1 - supports direct integration into engine control units and ADAS domain controllers. |
| Stackable for custom voltages | Multiple units can be series-connected to generate user-defined outputs (e.g., +7.5 V using ADR5041 + ADR5045) - avoids need for discrete resistor dividers in programmable supplies. |
Applications
| Portable Instrumentation | Automotive Power Management |
|---|---|
Use Scenario: Handheld digital multimeter with 16-bit sigma-delta ADC and Li-ion battery supply. IC Role / Device Role / Timing Role: Shunt reference providing stable 2.5 V reference for ADC conversion and internal DAC calibration. Use Value: Enables ±0.1% measurement accuracy across −10°C to +50°C ambient without recalibration, leveraging 100 ppm/°C tempco and 35 µs turn-on time. |
Use Scenario: Engine control unit (ECU) sensing 12 V battery voltage and throttle position with analog front-end. IC Role / Device Role / Timing Role: Precision voltage reference for ratiometric sensor excitation and ADC reference in ASIL-B compliant subsystem. Use Value: Maintains <±0.2% output stability over −40°C to +125°C junction temperature, meeting AEC-Q100 thermal stress requirements. |
| Industrial Data Acquisition | Energy Monitoring Systems |
Use Scenario: DIN-rail mounted PLC analog input module measuring 4–20 mA loop signals. IC Role / Device Role / Timing Role: Reference source for 24-bit delta-sigma ADC and isolated current sense amplifier. Use Value: Delivers 3.2 µV rms low-frequency noise and 0.2 Ω dynamic impedance to resolve sub-µV signal changes in 0.01% accuracy metering. |
Use Scenario: Smart electricity meter with polyphase voltage/current sampling and metrology SoC. IC Role / Device Role / Timing Role: Primary shunt reference for metrology ADC and anti-tampering voltage supervisor circuit. Use Value: Supports IEC 62053-21 Class 0.5S compliance via ±0.2% initial accuracy and 40 ppm hysteresis, reducing calibration overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040C25IDBZR | 2.5 V, ±0.5% initial accuracy, 100 ppm/°C, SOT-23-3 package, requires ≥60 µA min current | Lower accuracy limits use in 16-bit+ systems; higher min current reduces battery life in ultra-low-power designs | Select when cost sensitivity outweighs precision needs and thermal drift is mitigated by system-level calibration. |
| ADR3425ARJZ-R7 | 2.5 V, ±0.1% initial accuracy, 3 ppm/°C typical tempco, SOT-23-5 package, series topology, 300 µA quiescent current | Series architecture eliminates bias resistor but increases supply headroom requirement and static power draw | Prefer for fixed-supply systems where layout simplicity and ultra-low drift outweigh current efficiency concerns. |
Compared with LM4040C25IDBZR and ADR3425ARJZ-R7, the ADR5041AKSZ-R2 uniquely balances micropower operation (50 µA min), moderate accuracy (±0.2%), and shunt flexibility - making it optimal for battery-powered instrumentation where board space, supply headroom, and long-term stability are jointly constrained.
Availability
ADR5041AKSZ-R2 is available at Aetrix Electronics and suitable for portable instrumentation, automotive power management, and industrial data acquisition requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADR5041AKSZ-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.
The ADR504x family was designed specifically for space-constrained, high-accuracy shunt reference applications in portable, automotive, and industrial systems - emphasizing micropower operation, wide temperature range, and capacitor-free stability.
FAQ
What is the minimum operating current for ADR5041AKSZ-R2?
The ADR5041AKSZ-R2 requires a minimum operating current of 50 µA at 25°C and 60 µA across the full −40°C to +125°C temperature range. This ultralow threshold enables use in energy-harvesting and coin-cell-powered devices where supply current budgets are tightly constrained. Operation below this current risks loss of regulation and increased output voltage error.
Can ADR5041AKSZ-R2 be used without an external capacitor?
Yes, ADR5041AKSZ-R2 is explicitly designed to operate stably without any external capacitor between its terminals. Its internal compensation ensures stability with capacitive loads up to 1 µF, eliminating the need for external bypass components and simplifying PCB layout in compact designs such as wearable sensors and handheld test equipment.
Is ADR5041AKSZ-R2 qualified for automotive applications?
No, ADR5041AKSZ-R2 is the commercial-grade variant. For automotive use, select ADR5041WARTZ-R7 or ADR5041WBRTZ-R7, which are AEC-Q100 Grade 1 qualified and manufactured under controlled automotive processes. These variants maintain identical electrical specifications but include enhanced reliability testing and traceability documentation required for automotive Tier 1 suppliers.
How does the T pin function on ADR5041AKSZ-R2?
The T pin on ADR5041AKSZ-R2 is an internal temperature-sensing node. Per Analog Devices' datasheet Note 1, it is recommended to connect this pin directly to V+ to minimize thermal hysteresis and improve long-term stability. Leaving it floating or connecting it to other potentials may introduce uncharacterized errors in output voltage vs. temperature behavior.
What is the maximum reverse current rating for ADR5041AKSZ-R2?
The absolute maximum reverse current rating for ADR5041AKSZ-R2 is 25 mA, as specified in the Absolute Maximum Ratings table. Exceeding this value - even momentarily - risks permanent damage to the internal bandgap core. Designers must size the external bias resistor (RBIAS) to ensure that worst-case supply voltage and minimum load current do not drive reverse current beyond this limit.
ADR5041AKSZ-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:
- ±0.2%
- Temperature Coefficient:
- 100ppm/°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
ADR5041AKSZ-R2 FAQ
1.How can I place an order for ADR5041AKSZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR5041AKSZ-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 ADR5041AKSZ-R2 reliable?
The price and inventory of ADR5041AKSZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR5041AKSZ-R2 is usually 5 days.
3.What payment methods are accepted for ADR5041AKSZ-R2?
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4.How is shipping managed for ADR5041AKSZ-R2?
ADR5041AKSZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR5041AKSZ-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 ADR5041AKSZ-R2?
For technical support, including ADR5041AKSZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR5041AKSZ-R2 requirements.
6.How does Aetrix verify that ADR5041AKSZ-R2 is sourced from the original manufacturer or authorized distributors?
All ADR5041AKSZ-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 ADR5041AKSZ-R2 meets industry standards.
7.What is the process for return or replacement of ADR5041AKSZ-R2?
All ADR5041AKSZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADR5041AKSZ-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 ADR5041AKSZ-R2 part is unused and in its original packaging.
Return procedure for ADR5041AKSZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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