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Analog Devices Inc. ADR5040AKSZ-REEL
- Part No.:
- ADR5040AKSZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADR5040AKSZ-REEL.pdf
- Description:
- IC VREF SHUNT 0.2% SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,592
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Product details
Overview
ADR5040AKSZ-REEL from Analog Devices is a precision 2.048 V shunt voltage reference in SC70-3 (KS-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 compact, low-power reference for high-resolution ADCs, portable instrumentation, and automotive sensor signal conditioning.
For engineers reviewing the ADR5040AKSZ-REEL datasheet, ADR5040AKSZ-REEL pinout, ADR5040AKSZ-REEL application, or ADR5040AKSZ-REEL equivalent, this device offers verified performance in battery-powered data acquisition, automotive power rail monitoring, and space-constrained industrial control systems where micropower stability and grade-A accuracy are required.
Technical Context
The ADR5040AKSZ-REEL uses band gap–based shunt topology with curvature compensation to achieve low thermal drift and fast 28 µs turn-on settling. Its design eliminates need for external stabilization capacitors while maintaining stability across any capacitive load up to 1 µF.
It operates as a two-terminal device requiring only an external bias resistor, supporting reverse current regulation from 50 µA minimum to 15 mA maximum. Output voltage hysteresis is limited to 40 ppm, and dynamic output impedance remains ≤0.2 Ω across its full operating current range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal at 100 µA - matches standard 12-bit DAC/ADC full-scale reference points |
| Initial Accuracy | ±0.2% (±4.096 mV) - enables <1 LSB error in 11-bit systems without calibration |
| Temp Coefficient | ≤100 ppm/°C - ensures <±0.25 mV drift over −40°C to +125°C ambient |
| Operating Current | 50 µA to 15 mA - supports ultra-low-power sleep modes and high-speed active operation |
| Voltage Noise | 2.8 µV rms (0.1–10 Hz), 120 µV rms (10 Hz–10 kHz) - suitable for 16-bit SAR ADC reference |
| Settling Time | 28 µs (CLOAD = 0 µF) - enables rapid wake-up in duty-cycled measurement systems |
| Min Operating Current | 60 µA over full temp range - guarantees regulation even at cold start in automotive environments |
Pinout & Package
ADR5040AKSZ-REEL is housed in a 3-lead SC70 (KS-3) package measuring 2.20 mm × 1.35 mm × 0.95 mm, optimized for high-density PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Anode / Input Terminal | Connects to positive supply via bias resistor; sinks regulated current to maintain reference voltage |
| V− | Cathode / Output Terminal | Provides stable 2.048 V output referenced to system ground; connects to load and feedback nodes |
| T | Trim / Temperature Sense | Internal trim node; recommended to connect to V+ per datasheet Note 1 for optimal accuracy and stability |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable with any capacitive load up to 1 µF - simplifies layout and reduces BOM count |
| PIN-compatible with LM4040/LM4050 | Direct drop-in replacement in existing SC70/SOT-23 shunt reference designs - no PCB revision needed |
| Qualified for automotive applications | Specified and tested over −40°C to +125°C with controlled manufacturing - meets AEC-Q100 stress requirements |
| Ultralow 50 µA minimum current | Enables >10-year battery life in coin-cell–powered IoT sensors and portable meters |
| Low 2.8 µVrms low-frequency noise | Preserves ENOB in precision 16-bit data acquisition systems without additional filtering |
Applications
| Battery-Powered Data Loggers | Automotive Cabin Sensors |
|---|---|
Use Scenario: Continuous 12-bit temperature/humidity logging from coin-cell supply with 10-year target lifetime. IC Role / Device Role / Timing Role: Shunt reference providing stable 2.048 V for ADC conversion and internal LDO feedback. Use Value: 50 µA min operating current enables microamp-level system sleep current; ±0.2% accuracy avoids factory calibration. |
Use Scenario: Occupancy detection using MEMS accelerometer and analog front-end in vehicle dashboard. IC Role / Device Role / Timing Role: Precision voltage reference for signal conditioning amplifier and 10-bit SAR ADC. Use Value: −40°C to +125°C guaranteed operation ensures reliability across engine-off parking and summer cabin heat exposure. |
| Industrial Process Transmitters | Portable Medical Instruments |
Use Scenario: 4–20 mA loop-powered pressure transmitter with HART modulation and local display. IC Role / Device Role / Timing Role: Reference for 16-bit DAC generating precise loop current and for ADC reading sensor bridge output. Use Value: 100 ppm/°C tempco limits span error to <0.1% over process plant ambient swings; SC70 footprint saves board space. |
Use Scenario: Handheld blood glucose meter with electrochemical sensor and LCD display powered by AAA batteries. IC Role / Device Role / Timing Role: Stable reference for analog sensor interface and ADC used in amperometric current measurement. Use Value: Low 2.8 µVrms 0.1–10 Hz noise prevents baseline drift in sub-microamp current readings; RoHS-compliant KS-3 package supports medical compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040C20IDCKR | 2.048 V, ±0.5% initial accuracy, 100 ppm/°C, SOT-23-3 - lower accuracy grade, no automotive qualification | Suitable for cost-sensitive consumer electronics; not rated for extended temperature or automotive use | Select when budget constraints outweigh precision and environmental robustness requirements |
| ADR5040BKSZ-REEL | Same package and pinout; ±0.1% initial accuracy, 75 ppm/°C max tempco - tighter tolerance and lower drift | Required for 12-bit+ systems needing <1 LSB error without trimming; higher cost | Choose for applications demanding highest-grade ADR5040 performance without changing layout |
Compared with LM4040C20IDCKR, ADR5040AKSZ-REEL delivers twice the initial accuracy and automotive qualification; compared with ADR5040BKSZ-REEL, it trades 0.1% accuracy for lower unit cost while retaining identical thermal and noise performance.
Availability
ADR5040AKSZ-REEL is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive sensor modules, and industrial process transmitters requiring stable component supply with guaranteed long-term availability.
Supply support for ADR5040AKSZ-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 ADR5040 series belongs to Analog Devices' precision voltage reference product line, engineered specifically for space-constrained, micropower applications demanding high initial accuracy and low temperature drift across harsh environments.
FAQ
What is the output voltage tolerance of ADR5040AKSZ-REEL over temperature?
The ADR5040AKSZ-REEL has a maximum temperature coefficient of 100 ppm/°C over −40°C to +125°C, resulting in ≤±0.25 mV total drift relative to its 2.048 V nominal output. This is verified per Table 2 in Rev. E datasheet and applies to Grade A devices across the full extended temperature range.
Does ADR5040AKSZ-REEL require an external capacitor for stability?
No, ADR5040AKSZ-REEL 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 of the Rev. E datasheet.
What is the minimum operating current for ADR5040AKSZ-REEL at −40°C?
The minimum operating current for ADR5040AKSZ-REEL is 60 µA over the full −40°C to +125°C temperature range, as specified in Table 2 under "MINIMUM OPERATING CURRENT" with test condition "−40°C < TA < +125°C".
Is ADR5040AKSZ-REEL qualified for automotive applications?
No, ADR5040AKSZ-REEL is not automotive-qualified. Only variants with "W" suffix (e.g., ADR5040WARTZ-R7) are AEC-Q100 qualified. The ADR5040AKSZ-REEL is rated for industrial temperature range (−40°C to +125°C) but lacks automotive-specific testing and documentation.
Can ADR5040AKSZ-REEL be used in negative reference configurations?
Yes, ADR5040AKSZ-REEL can be configured as a precision negative reference by reversing its connection - connecting V− to system ground and V+ to a negative rail - as demonstrated in Figure 20 of the Rev. E datasheet for the ADR5045, with identical topology applicable to all ADR504x devices.
ADR5040AKSZ-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):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- 2.8µVrms
- Noise - 10Hz to 10kHz:
- 120µVrms
- 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
ADR5040AKSZ-REEL FAQ
1.How can I place an order for ADR5040AKSZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR5040AKSZ-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 ADR5040AKSZ-REEL reliable?
The price and inventory of ADR5040AKSZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR5040AKSZ-REEL is usually 5 days.
3.What payment methods are accepted for ADR5040AKSZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR5040AKSZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR5040AKSZ-REEL?
ADR5040AKSZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR5040AKSZ-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 ADR5040AKSZ-REEL?
For technical support, including ADR5040AKSZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR5040AKSZ-REEL requirements.
6.How does Aetrix verify that ADR5040AKSZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADR5040AKSZ-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 ADR5040AKSZ-REEL meets industry standards.
7.What is the process for return or replacement of ADR5040AKSZ-REEL?
All ADR5040AKSZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADR5040AKSZ-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 ADR5040AKSZ-REEL part is unused and in its original packaging.
Return procedure for ADR5040AKSZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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