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Analog Devices Inc. ADR5045AKSZ-REEL
- Part No.:
- ADR5045AKSZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADR5045AKSZ-REEL.pdf
- Description:
- IC VREF SHUNT 0.2% SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,364
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Product details
Overview
ADR5045AKSZ-REEL from Analog Devices is a precision 5.0 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 over −40°C to +125°C. It serves as a high-stability voltage reference for ADC/DAC biasing, sensor excitation, and power supply monitoring in space-constrained industrial and automotive systems.
For engineers reviewing the ADR5045AKSZ-REEL datasheet, ADR5045AKSZ-REEL pinout, ADR5045AKSZ-REEL application, or ADR5045AKSZ-REEL equivalent, key selection criteria include output voltage tolerance, low operating current capability, thermal stability across extended temperature range, and compatibility with capacitive loads without external compensation.
Technical Context
The ADR5045AKSZ-REEL implements a bandgap-based shunt architecture that cancels intrinsic transistor VBE temperature drift via curvature-compensated current summation, achieving zero-TC voltage output. Its design eliminates need for external stabilization capacitors while maintaining stability under any capacitive load condition.
It operates as a two-terminal device requiring only an external bias resistor (RBIAS) to set total current through the reference and load. Output voltage hysteresis is limited to 40 ppm, and dynamic output impedance remains ≤0.2 Ω across its full 50 µA–15 mA operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V nominal at 100 µA; min/max of 4.990 V / 5.010 V (Grade A) ensures tight system-level calibration margin. |
| Initial Accuracy | ±0.2% (±10 mV) at 100 µA enables single-point calibration in 12-bit data acquisition systems. |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +125°C limits drift to ±0.6 mV across full automotive temperature range. |
| Operating Current | 50 µA to 15 mA range supports ultra-low-power sensor nodes and high-current precision regulators. |
| Voltage Noise | 6.6 µV rms (0.1–10 Hz); 280 µV rms (10 Hz–10 kHz) - suitable for 16-bit SAR ADC reference without additional filtering. |
| Turn-On Settling | 70 µs to 0.1% with no load capacitor - enables fast power-up sequencing in portable instrumentation. |
| Dynamic Impedance | ≤0.2 Ω ensures minimal load-induced error during transient current steps in closed-loop feedback circuits. |
Pinout & Package
ADR5045AKSZ-REEL uses the 3-lead SC70 (KS-3) package: 1.25 mm × 0.85 mm × 0.55 mm body, 0.65 mm pitch, JEDEC-compliant footprint. Pin 1 = V+, Pin 2 = V−, Pin 3 = T (thermal pad connected 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 stable 5.0 V reference output; must be tied to system ground or negative rail in inverted configurations. |
| T | Thermal pad / V+ tie | Internally connected to V+; recommended to solder to PCB copper pour for thermal management and noise reduction. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable with any capacitive load up to 10 µF - simplifies layout and eliminates risk of oscillation in battery-powered designs. |
| Ultracompact SC70 package | 1.25 mm × 0.85 mm footprint saves >60% board area vs. SOT-23 - critical for wearable and IoT edge sensors. |
| Extended temperature range | Specified from −40°C to +125°C - qualified for under-hood automotive and industrial control applications. |
| Low minimum operating current | 50 µA start-up current enables use in energy-harvesting systems powered by micro-watt sources. |
| Pin-compatible with LM4040/LM4050 | Direct drop-in replacement for legacy references - preserves existing PCB layouts and qualification data. |
Applications
| Portable Instrumentation | Automotive Power Monitoring |
|---|---|
Use Scenario: Handheld multimeter with 16-bit ADC and Li-ion battery supply. IC Role / Device Role / Timing Role: Provides stable 5.0 V reference for ADC full-scale calibration and analog front-end biasing. Use Value: ±0.2% initial accuracy and 100 ppm/°C TC ensure <0.02% measurement error across battery discharge cycle and ambient temperature shifts. |
Use Scenario: Engine control unit (ECU) monitoring 12 V battery voltage and 5 V logic rail. IC Role / Device Role / Timing Role: Supplies reference for high-side current sense amplifier and microcontroller ADC inputs. Use Value: −40°C to +125°C operation and automotive-qualified thermal hysteresis (40 ppm) maintain consistent fault detection thresholds across engine thermal cycles. |
| Industrial Data Acquisition | Energy Management Systems |
Use Scenario: DIN-rail mounted PLC analog input module with 24-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Precision shunt reference for programmable gain instrumentation amplifier (PGIA) stage. Use Value: 6.6 µV rms low-frequency noise and 0.2 Ω dynamic impedance minimize code spread and improve effective resolution beyond 20 bits. |
Use Scenario: Smart electricity meter measuring grid voltage/current with anti-tampering features. IC Role / Device Role / Timing Role: Reference for isolated voltage sensing and metrology ADC in Class 0.5 accuracy meters. Use Value: 50 µA–15 mA operating range allows same part to serve both ultra-low-power sleep mode and active measurement phases without re-biasing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR5045BRTZ-REEL7 | Same 5.0 V output but ±0.1% initial accuracy and 75 ppm/°C TC; uses SOT-23-3 (RT-3) package. | Better accuracy and lower TC suit metrology-grade systems; larger SOT-23 footprint requires layout change. | Select when higher precision justifies larger package and cost premium; not pin-compatible due to different lead frame geometry. |
| LM4040C50IDCKR | 5.0 V, ±0.5% initial accuracy, 100 ppm/°C TC, SC70-5 package with cathode/anode/NC pins. | Lower accuracy and fixed 3-pin SC70-5 pinout limit flexibility in compact designs requiring minimal footprint. | Choose for cost-sensitive applications where ±0.5% tolerance is acceptable and NC pin routing is manageable. |
Compared with ADR5045AKSZ-REEL, the ADR5045BRTZ-REEL7 offers tighter accuracy in a larger package, while the LM4040C50IDCKR provides lower-cost reference performance at reduced precision - neither is pin-compatible, requiring PCB redesign for substitution.
Availability
ADR5045AKSZ-REEL is available at Aetrix Electronics and suitable for portable instrumentation, automotive power monitoring, and industrial data acquisition requiring stable component supply with guaranteed long-term availability.
Supply support for ADR5045AKSZ-REEL 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 voltage reference needs in battery-powered, automotive, and industrial systems - emphasizing micropower operation, wide temperature range, and capacitor-free stability.
FAQ
What is the maximum operating current for ADR5045AKSZ-REEL?
The absolute maximum reverse current rating for ADR5045AKSZ-REEL is 25 mA, but its specified operating range is 50 µA to 15 mA. Exceeding 15 mA may degrade long-term stability or accelerate parametric drift; sustained operation above this level is not characterized or guaranteed per the Rev. E datasheet.
Does ADR5045AKSZ-REEL require an external capacitor for stability?
No, ADR5045AKSZ-REEL does not require an external capacitor for stability. Its internal design ensures unconditional stability with any capacitive load, including 0 µF to 10 µF, eliminating the need for external compensation components in all standard applications.
What is the thermal pad (Pin 3) connection requirement for ADR5045AKSZ-REEL?
Per Analog Devices datasheet Figure 1 Note 1, Pin 3 (T) of ADR5045AKSZ-REEL is internally connected to V+ and must be soldered to a PCB copper pour tied to the V+ net. This improves thermal dissipation and reduces noise coupling - floating or grounding Pin 3 degrades performance and is not recommended.
Can ADR5045AKSZ-REEL be used to generate a negative reference voltage?
Yes, ADR5045AKSZ-REEL can configure a precise negative reference: connect V+ to system ground and V− to a negative supply rail via a bias resistor. The device regulates 5.0 V across its terminals, so V− becomes −5.0 V relative to ground - verified in Figure 20 of the Rev. E datasheet.
Is ADR5045AKSZ-REEL qualified for automotive applications?
No, ADR5045AKSZ-REEL is not automotive-qualified. Only variants with "W" suffix (e.g., ADR5045WARTZ-REEL7) are AEC-Q100 qualified and manufactured under automotive-specific process controls. ADR5045AKSZ-REEL is rated for −40°C to +125°C but lacks automotive reliability reporting and controlled lot traceability.
ADR5045AKSZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- SC-70, SOT-323
- Series:
- ADR504
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- 6.6µVrms
- Noise - 10Hz to 10kHz:
- 280µVrms
- 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
ADR5045AKSZ-REEL FAQ
1.How can I place an order for ADR5045AKSZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR5045AKSZ-REEL 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 ADR5045AKSZ-REEL reliable?
The price and inventory of ADR5045AKSZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR5045AKSZ-REEL is usually 5 days.
3.What payment methods are accepted for ADR5045AKSZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR5045AKSZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR5045AKSZ-REEL?
ADR5045AKSZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR5045AKSZ-REEL 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 ADR5045AKSZ-REEL?
For technical support, including ADR5045AKSZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR5045AKSZ-REEL requirements.
6.How does Aetrix verify that ADR5045AKSZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADR5045AKSZ-REEL 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 ADR5045AKSZ-REEL meets industry standards.
7.What is the process for return or replacement of ADR5045AKSZ-REEL?
All ADR5045AKSZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADR5045AKSZ-REEL, 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 ADR5045AKSZ-REEL part is unused and in its original packaging.
Return procedure for ADR5045AKSZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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