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Analog Devices Inc. ADR5045AKSZ-R2
- Part No.:
- ADR5045AKSZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADR5045AKSZ-R2.pdf
- Description:
- IC VREF SHUNT 0.2% SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,014
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Product details
Overview
ADR5045AKSZ-R2 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 supply current across −40°C to +125°C - used in high-accuracy ADC biasing, portable power monitoring, and automotive sensor signal conditioning.
For engineers reviewing the ADR5045AKSZ-R2 datasheet, ADR5045AKSZ-R2 pinout, ADR5045AKSZ-R2 application, or ADR5045AKSZ-R2 equivalent, key selection criteria include output voltage tolerance, low-current stability, thermal drift performance, and compatibility with space-constrained PCB layouts requiring ultrasmall SC70 packaging.
Technical Context
The ADR5045AKSZ-R2 implements a bandgap-based shunt reference architecture optimized for minimal thermal hysteresis and zero external capacitor dependency. It maintains regulation over a 50 µA–15 mA operating current range while exhibiting 0.2 Ω dynamic output impedance and 40 ppm output voltage hysteresis.
Its design supports direct integration into precision analog front-ends where load regulation, low noise (6.6 µV rms, 0.1–10 Hz), and fast 70 µs turn-on settling time are critical - especially in battery-powered instrumentation and automotive-grade data acquisition systems operating across extended temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V at 100 µA - nominal reference level for 5 V system rails and ADC full-scale calibration. |
| Initial Accuracy | ±0.2% (±10 mV) - ensures ≤10 mV absolute error at room temperature without trimming. |
| Temp Coefficient | 100 ppm/°C max - limits drift to ±0.6 V over −40°C to +125°C ambient range. |
| Operating Current | 50 µA to 15 mA - enables ultra-low-power sensing modes and robust high-current regulation. |
| Voltage Noise | 6.6 µV rms (0.1–10 Hz) - supports sub-16-bit precision in low-frequency measurement circuits. |
| Settling Time | 70 µs - allows rapid power-up in wake-on-event systems without reference stabilization delay. |
Pinout & Package
ADR5045AKSZ-R2 uses the 3-lead SC70 (KS-3) package: 1.25 mm × 0.89 mm × 0.40 mm body, 0.65 mm pitch, JEDEC-compliant thin shrink outline. Pin 1 = V+, Pin 2 = V−, Pin 3 = T (thermal pad connected to V+ per datasheet Note 1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (V+) | Anode input | Connects to positive supply rail; carries total shunt current (IIN + IL) and must be biased via external resistor. |
| 2 (V−) | Cathode output | Provides regulated 5.0 V reference node; connects to load and feedback networks. |
| 3 (T) | Thermal terminal | Internally tied to V+; recommended connection to V+ improves thermal stability and power dissipation handling. |
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 compensation components. |
| Precision shunt topology | Enables flexible placement in either high-side or low-side configurations, including negative reference generation. |
| Automotive-qualified variant available | ADR5045W series meets AEC-Q100 requirements - supports functional safety-critical sensor interfaces. |
| Ultracompact SC70 package | 0.89 mm width enables routing in dense mixed-signal layouts where SOT-23 is too large. |
Applications
| Portable Instrumentation | Automotive Sensor Interface |
|---|---|
Use Scenario: Handheld multimeter with 16-bit SAR ADC and battery-backed operation. IC Role / Device Role / Timing Role: Provides stable 5.0 V reference for ADC full-scale calibration and internal LDO feedback. Use Value: ±0.2% initial accuracy and 100 ppm/°C drift ensure <0.02% measurement error across operating temperature range. | Use Scenario: Engine control unit (ECU) pressure sensor signal conditioning module. IC Role / Device Role / Timing Role: Supplies precision bias to bridge amplifier and ADC reference input in harsh under-hood environment. Use Value: Extended −40°C to +125°C operation and 40 ppm hysteresis maintain repeatability after thermal cycling. |
| Industrial Data Acquisition | Energy Management System |
Use Scenario: DIN-rail mounted PLC analog input module with 24-channel 24-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Serves as master reference for multiplexed channel calibration and offset correction. Use Value: Low 6.6 µV rms (0.1–10 Hz) noise prevents degradation of effective resolution below 22 bits. | Use Scenario: Smart electricity meter with anti-tampering detection and metrology-grade voltage scaling. IC Role / Device Role / Timing Role: Generates accurate 5.0 V reference for voltage divider networks feeding energy measurement ICs. Use Value: 50 µA minimum operating current enables operation during low-power meter sleep modes without dropout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431ACDBVR | 2.5 V fixed output; ±0.5% initial accuracy; 100 ppm/°C tempco; 80 µA min current. | Lower accuracy and single 2.5 V option - suitable only if system can scale signals or accept reduced precision. | Select when cost sensitivity outweighs accuracy needs and 2.5 V reference suffices. |
| MAX6008AEUR+T | 5.0 V output; ±0.2% initial accuracy; 75 ppm/°C max tempco; SC70-3 package; 10 µA min current. | Better tempco and lower quiescent current, but limited to commercial −40°C to +85°C range. | Prefer for non-automotive industrial designs requiring tighter drift control and ultra-low standby current. |
Compared with TLVH431ACDBVR and MAX6008AEUR+T, the ADR5045AKSZ-R2 offers guaranteed automotive-grade temperature range (−40°C to +125°C) and proven stability with no external capacitor - making it optimal for high-reliability embedded systems where layout simplicity and thermal robustness are prioritized over marginal current savings.
Availability
ADR5045AKSZ-R2 is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor interface, and industrial data acquisition requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for ADR5045AKSZ-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 for precision measurement and control.
The ADR504x family was designed specifically for space-constrained, high-accuracy shunt reference applications demanding low drift, wide temperature operation, and capacitor-free stability - targeting portable, automotive, and industrial instrumentation markets.
FAQ
What is the output voltage tolerance of ADR5045AKSZ-R2 over temperature?
The ADR5045AKSZ-R2 has a maximum temperature coefficient of 100 ppm/°C over −40°C to +125°C, resulting in ±0.6 V total drift relative to its 5.000 V nominal output. This is specified in Table 6 of the Rev. E datasheet under "Temperature Coefficient" for Grade A devices, and confirmed by Figure 5 showing VOUT change vs. temperature.
Does ADR5045AKSZ-R2 require an external capacitor for stability?
No, the ADR5045AKSZ-R2 does not require an external capacitor for stability. Its advanced bandgap design ensures unconditional stability with any capacitive load, including 0 µF to 1 µF, as stated in the General Description and Applications Information sections of the datasheet.
What is the minimum operating current for ADR5045AKSZ-R2 at full temperature range?
The ADR5045AKSZ-R2 requires a minimum operating current of 60 µA across −40°C to +125°C, as specified in Table 6 under "Minimum Operating Current". At 25°C, the minimum is 50 µA, but derating to 60 µA ensures regulation over the full extended temperature range.
Can ADR5045AKSZ-R2 be used to generate a negative reference voltage?
Yes, ADR5045AKSZ-R2 can be configured as a negative precision reference by connecting its V+ terminal to ground and using V− as the −5.0 V output node, as shown in Figure 20 of the datasheet. Careful selection of low-tempco resistors is required to avoid introducing additional error.
Is ADR5045AKSZ-R2 qualified for automotive applications?
No, ADR5045AKSZ-R2 is the commercial-grade version. The automotive-qualified variant is ADR5045WARTZ-REEL7 or ADR5045WBRTZ-REEL7 (marked R3P/R3Q), which undergo controlled manufacturing and AEC-Q100 qualification - detailed in the Automotive Products section on page 14 of the datasheet.
ADR5045AKSZ-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):
- 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-R2 FAQ
1.How can I place an order for ADR5045AKSZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR5045AKSZ-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 ADR5045AKSZ-R2 reliable?
The price and inventory of ADR5045AKSZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR5045AKSZ-R2 is usually 5 days.
3.What payment methods are accepted for ADR5045AKSZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR5045AKSZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR5045AKSZ-R2?
ADR5045AKSZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR5045AKSZ-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 ADR5045AKSZ-R2?
For technical support, including ADR5045AKSZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR5045AKSZ-R2 requirements.
6.How does Aetrix verify that ADR5045AKSZ-R2 is sourced from the original manufacturer or authorized distributors?
All ADR5045AKSZ-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 ADR5045AKSZ-R2 meets industry standards.
7.What is the process for return or replacement of ADR5045AKSZ-R2?
All ADR5045AKSZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADR5045AKSZ-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 ADR5045AKSZ-R2 part is unused and in its original packaging.
Return procedure for ADR5045AKSZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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