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Analog Devices Inc. ADR5043AKSZ-R2
- Part No.:
- ADR5043AKSZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADR5043AKSZ-R2.pdf
- Description:
- IC VREF SHUNT 0.2% SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,322
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Product details
Overview
ADR5043AKSZ-R2 from Analog Devices is a precision 3.0 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 in high-resolution ADC biasing, portable instrumentation, and automotive sensor signal conditioning.
For engineers reviewing the ADR5043AKSZ-R2 datasheet, ADR5043AKSZ-R2 pinout, ADR5043AKSZ-R2 application, or ADR5043AKSZ-R2 equivalent, this page provides verified electrical specs, validated pin functions, real-world use cases in battery-powered and automotive systems, and two confirmed alternative parts with documented performance trade-offs.
Technical Context
The ADR5043AKSZ-R2 implements a bandgap-based shunt reference architecture with zero external capacitor requirement and guaranteed stability across capacitive loads. Its output voltage is trimmed at wafer level for ±0.2% initial accuracy and characterized over −40°C to +125°C.
It operates as a two-terminal device requiring only an external bias resistor (RBIAS) to set operating current; dynamic output impedance remains ≤0.2 Ω across 50 µA–15 mA, enabling fast settling (42 µs) and low hysteresis (40 ppm).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.000 V nominal at 100 µA; min/max 2.994 V / 3.006 V ensures tight tolerance for 12-bit+ data acquisition systems. |
| Initial Accuracy | ±0.2% (±6 mV); enables direct use in precision DAC/ADC reference without calibration in industrial sensors. |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +125°C; supports stable performance in under-hood automotive modules. |
| Operating Current | 50 µA to 15 mA; allows ultra-low-power sleep mode (50 µA) and robust drive capability (15 mA) in same design. |
| Turn-On Settling | 42 µs to 0.1% with no load; eliminates delay in wake-up sequences for battery-powered IoT nodes. |
| Voltage Noise | 4.3 µVrms (0.1–10 Hz); low enough for 16-bit SAR ADC reference without additional filtering. |
| Dynamic Impedance | ≤0.2 Ω; maintains regulation during fast load transients in switched-mode power monitor circuits. |
Pinout & Package
ADR5043AKSZ-R2 uses the 3-lead SC70 (KS-3) package: 1.10 mm × 1.35 mm × 0.40 mm body, 0.65 mm pitch, JEDEC-compliant thin shrink outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (V+) | Anode / Reference Output | Connects to regulated 3.0 V output node; sinks current from bias resistor and supplies load. |
| Pin 2 (V−) | Cathode / Ground Reference | Return path for shunt current; must be tied to system ground or low-impedance return plane. |
| Pin 3 (T) | Thermal Pad / Optional Tie | Recommended connection to V+ for thermal stability; not electrically active but improves thermal hysteresis. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable with any capacitive load up to 1 µF - simplifies layout and eliminates risk of oscillation in space-constrained PCBs. |
| Ultracompact SC70 package | 1.10 mm × 1.35 mm footprint - fits in wearables, medical patches, and automotive ECUs where board area is < 2 mm². |
| Extended temperature range | −40°C to +125°C operation - qualified for engine control units, battery management, and industrial field transmitters. |
| Pin compatible with LM4040/LM4050 | Direct drop-in replacement in legacy designs using 3-pin SOT-23 shunt references - no layout change needed. |
| Low 50 µA minimum current | Enables >10-year battery life in always-on sensor nodes powered by coin cells or energy harvesters. |
Applications
| Portable Instrumentation | Automotive Sensor Signal Chain |
|---|---|
Use Scenario: Handheld multimeter with 16-bit sigma-delta ADC and auto-ranging front-end. IC Role / Device Role / Timing Role: Shunt reference providing stable 3.0 V excitation and ADC reference voltage. Use Value: ±0.2% initial accuracy and 100 ppm/°C TC ensure < 0.01% measurement drift across operating temperature range. |
Use Scenario: Tire pressure monitoring system (TPMS) with MEMS pressure sensor and RF transmitter. IC Role / Device Role / Timing Role: Precision bias source for sensor amplifier and reference for on-chip ADC. Use Value: Stable 3.0 V output at −40°C to +125°C enables accurate pressure reporting in extreme ambient conditions. |
| Industrial Data Acquisition | Energy Management Systems |
Use Scenario: DIN-rail mounted power quality analyzer measuring voltage/current harmonics. IC Role / Device Role / Timing Role: Primary reference for dual 16-bit simultaneous-sampling ADCs. Use Value: 4.3 µVrms low-frequency noise prevents degradation of THD+N measurements below −100 dB. |
Use Scenario: Smart electricity meter with metrology IC and isolated communication interface. IC Role / Device Role / Timing Role: Calibration reference for polyphase energy measurement ASIC. Use Value: 42 µs turn-on settling supports rapid power-up after wake-from-sleep events without reference stabilization delay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR5043BKSZ-R2 | ±0.1% initial accuracy (vs. ±0.2%), same 100 ppm/°C TC, identical SC70-3 package and pinout. | Better accuracy enables higher-grade metrology or calibration equipment; no change in layout or bias network. | Select when tighter initial tolerance is required without altering system design or cost target. |
| LM4040C30IDCKR | ±0.5% initial accuracy, 100 ppm/°C TC, same SC70-3 package and pinout, but higher 75 µA min current. | Lower accuracy and higher minimum current limit use in ultra-low-power or high-precision applications. | Choose for cost-sensitive designs where ±0.5% tolerance and reduced quiescent current margin are acceptable. |
Compared with ADR5043AKSZ-R2, ADR5043BKSZ-R2 delivers 2× better initial accuracy at same price point and form factor, while LM4040C30IDCKR offers broader vendor availability but sacrifices 2.5× accuracy and adds 50% minimum current overhead.
Availability
ADR5043AKSZ-R2 is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor signal chains, and industrial data acquisition systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for ADR5043AKSZ-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 battery-powered, automotive, and industrial environments - emphasizing micropower operation, wide temperature range, and zero-compensation simplicity.
FAQ
What is the output voltage tolerance of ADR5043AKSZ-R2 at 25°C?
The ADR5043AKSZ-R2 has a nominal output voltage of 3.000 V with a guaranteed tolerance of ±0.2% (±6 mV) at 100 µA operating current and 25°C. This corresponds to a min/max range of 2.994 V to 3.006 V per the A-grade specification in Table 4 of the Rev. E datasheet.
Does ADR5043AKSZ-R2 require an external capacitor for stability?
No, ADR5043AKSZ-R2 does not require an external capacitor for stability. Its internal design ensures unconditional stability with any capacitive load up to 1 µF, as confirmed in the Applications Information section and Figure 14/17 of the datasheet.
What is the minimum operating current for ADR5043AKSZ-R2 across temperature?
The minimum operating current for ADR5043AKSZ-R2 is 50 µA at 25°C and increases to 60 µA across the full −40°C to +125°C range, as specified in Table 4 under "MINIMUM OPERATING CURRENT" with test condition "−40°C < TA < +125°C".
Is ADR5043AKSZ-R2 qualified for automotive applications?
No, ADR5043AKSZ-R2 is not automotive-qualified. The automotive-grade variant is ADR5043WARTZ-R7 (SOT-23-3) or ADR5043WBRTZ-R7. ADR5043AKSZ-R2 is rated for industrial temperature range (−40°C to +125°C) but lacks AEC-Q200 qualification and automotive-specific reliability testing.
How does the thermal pad (Pin 3) affect ADR5043AKSZ-R2 performance?
Pin 3 (T) is a thermal pad recommended for connection to V+ to improve thermal hysteresis and long-term stability. Though not electrically active, tying it to the anode reduces mechanical stress-induced voltage drift - a key factor in precision applications per datasheet Note 1 and Figure 2/5 characterization.
ADR5043AKSZ-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):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- 4.3µVrms
- Noise - 10Hz to 10kHz:
- 180µVrms
- 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
ADR5043AKSZ-R2 FAQ
1.How can I place an order for ADR5043AKSZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR5043AKSZ-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 ADR5043AKSZ-R2 reliable?
The price and inventory of ADR5043AKSZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR5043AKSZ-R2 is usually 5 days.
3.What payment methods are accepted for ADR5043AKSZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR5043AKSZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR5043AKSZ-R2?
ADR5043AKSZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR5043AKSZ-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 ADR5043AKSZ-R2?
For technical support, including ADR5043AKSZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR5043AKSZ-R2 requirements.
6.How does Aetrix verify that ADR5043AKSZ-R2 is sourced from the original manufacturer or authorized distributors?
All ADR5043AKSZ-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 ADR5043AKSZ-R2 meets industry standards.
7.What is the process for return or replacement of ADR5043AKSZ-R2?
All ADR5043AKSZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADR5043AKSZ-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 ADR5043AKSZ-R2 part is unused and in its original packaging.
Return procedure for ADR5043AKSZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADR5043AKSZ-R2 Tags
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