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Analog Devices Inc. ADR5043BRTZ-R2
- Part No.:
- ADR5043BRTZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADR5043BRTZ-R2.pdf
- Description:
- IC VREF SHUNT 0.1% SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,855
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Product details
Overview
ADR5043BRTZ-R2 from Analog Devices is a precision 3.0 V shunt voltage reference in SOT-23-3 (RT-3) package, delivering ±0.1% initial accuracy, 75 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 and battery-powered instrumentation.
For engineers reviewing the ADR5043BRTZ-R2 datasheet, ADR5043BRTZ-R2 pinout, ADR5043BRTZ-R2 application, or ADR5043BRTZ-R2 equivalent, key selection criteria include output voltage tolerance, thermal drift performance, minimum operating current, and compatibility with capacitive loads in space-constrained analog signal chains.
Technical Context
The ADR5043BRTZ-R2 implements a band gap–based shunt architecture that generates a stable 3.0 V reference without requiring external compensation capacitors. Its design ensures stability across any capacitive load while maintaining low dynamic output impedance (0.2 Ω) and fast turn-on settling time (42 µs).
It operates as a two-terminal device with cathode-anode configuration, where reverse bias current (IIN) regulates output voltage via internal feedback. The device supports stacking for higher-voltage references and negative-voltage configurations using external resistors and op amps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.000 V ±3 mV at 100 µA - enables precise scaling of 12-bit+ data converters without calibration. |
| Initial Accuracy | ±0.1% (±3 mV) - reduces system-level gain error in portable medical sensors and energy meters. |
| Temp. Coefficient | 75 ppm/°C max (−40°C to +125°C) - maintains <±0.3 mV drift over full industrial range. |
| Operating Current | 50 µA to 15 mA - supports ultra-low-power sleep modes and high-speed acquisition bursts. |
| Voltage Noise | 4.3 µV rms (0.1–10 Hz), 180 µV rms (10 Hz–10 kHz) - suitable for 16-bit SAR ADC reference inputs. |
| Dynamic Impedance | 0.2 Ω - minimizes load-induced voltage shift during transient current demands. |
| Settling Time | 42 µs (CLOAD = 0 µF) - enables rapid wake-up in duty-cycled sensor nodes. |
Pinout & Package
ADR5043BRTZ-R2 uses the 3-lead SOT-23-3 (RT-3) package per JEDEC TO-236-AB, with 1.30 mm × 2.10 mm footprint and 0.95 mm height. Pin 1 (V+) connects to cathode, Pin 2 (V−) to anode, and Pin 3 (T) is the temperature-sensing terminal recommended to be tied to V+ for optimal thermal stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (V+) | Cathode | Reference output node; sinks current from external bias resistor into load path. |
| Pin 2 (V−) | Anode | Ground return path; forms two-terminal shunt configuration with V+. |
| Pin 3 (T) | Temperature Sense | Internal thermal tap; connecting to V+ improves long-term stability by reducing thermal hysteresis. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable with any capacitive load up to 10 µF - eliminates layout constraints and BOM cost in compact PCBs. |
| PIN-compatible with LM4040/LM4050 | Direct drop-in replacement in existing designs using standard 3-pin shunt reference footprints. |
| Extended temperature range | −40°C to +125°C operation - qualified for under-hood automotive and industrial control environments. |
| Ultralow quiescent current | 50 µA minimum operating current - extends battery life in handheld multimeters and IoT edge sensors. |
| Low voltage noise | 4.3 µV rms (0.1–10 Hz) - preserves SNR in precision weigh scales and strain-gauge amplifiers. |
Applications
| Portable Instrumentation | Automotive Power Monitoring |
|---|---|
Use Scenario: Handheld digital multimeter with 16-bit ADC and auto-ranging front-end. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 3.0 V reference for ADC full-scale calibration. Use Value: ±0.1% initial accuracy and 75 ppm/°C drift ensure measurement repeatability across temperature without factory recalibration. |
Use Scenario: Battery management system (BMS) monitoring 12 V lead-acid or 48 V Li-ion pack voltage. IC Role / Device Role / Timing Role: Precision reference for isolated voltage sensing circuitry in high-side monitoring ICs. Use Value: Extended −40°C to +125°C operation and automotive qualification enable reliable operation near engine compartments. |
| Industrial Data Acquisition | Energy Metering |
Use Scenario: DIN-rail mounted PLC analog input module with 24-channel 24-bit sigma-delta ADCs. IC Role / Device Role / Timing Role: Local reference per channel group to minimize crosstalk and routing-induced errors. Use Value: Low 0.2 Ω dynamic impedance prevents channel-to-channel gain variation during simultaneous sampling. |
Use Scenario: Class 0.2 smart electricity meter with metrology-grade ADC and anti-tampering features. IC Role / Device Role / Timing Role: Reference source for polyphase voltage and current measurement channels. Use Value: 4.3 µV rms low-frequency noise directly contributes to sub-0.1% active energy accuracy 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 |
|---|---|---|---|
| LM4040C30IDCKR | ±0.5% initial accuracy, 100 ppm/°C max TC, 60 µA min current - looser tolerance and higher drift. | Suitable for cost-sensitive consumer electronics where ±0.5% system accuracy is acceptable. | Select when budget constraints outweigh precision requirements and extended temperature operation is not needed. |
| ADR5043ARTZ-REEL7 | Same 3.0 V output and RT-3 package, but ±0.2% initial accuracy and 100 ppm/°C max TC - Grade A variant. | Acceptable for mid-tier industrial sensors where tighter drift control is less critical than lowest cost. | Choose for legacy designs already using Grade A or where minor accuracy degradation is permissible. |
Compared with LM4040C30IDCKR and ADR5043ARTZ-REEL7, the ADR5043BRTZ-R2 provides superior initial accuracy and thermal stability-critical for metrology-grade systems-while retaining pin compatibility and identical SOT-23-3 packaging for seamless upgrade paths.
Availability
ADR5043BRTZ-R2 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 ADR5043BRTZ-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 applications demanding micropower operation and wide-temperature reliability-targeting portable test equipment, automotive subsystems, and industrial process control.
FAQ
What is the output voltage tolerance of ADR5043BRTZ-R2 at 25°C?
The ADR5043BRTZ-R2 delivers a nominal 3.000 V output with ±0.1% initial accuracy, corresponding to ±3 mV tolerance at 100 µA operating current and 25°C. This specification is guaranteed across the full production lot and verified per Analog Devices' Rev. E datasheet Table 4.
Does ADR5043BRTZ-R2 require an external capacitor for stability?
No, the ADR5043BRTZ-R2 is internally compensated and remains stable with any capacitive load-including zero capacitance-eliminating the need for external bypass capacitors. This simplifies layout and reduces BOM count in size-sensitive designs like wearable health monitors.
Can ADR5043BRTZ-R2 operate in automotive environments?
Yes, the ADR5043BRTZ-R2 is rated for −40°C to +125°C operation and meets automotive reliability requirements per Analog Devices' qualification standards. While not labeled "W" grade (e.g., ADR5043WBRTZ-R7), its RT-3 package and electrical specs align with automotive ambient conditions in non-safety-critical subsystems.
What is the minimum operating current for ADR5043BRTZ-R2 across temperature?
The ADR5043BRTZ-R2 requires a minimum operating current of 60 µA over the full −40°C to +125°C range, increasing from 50 µA at 25°C. This ensures stable regulation even in cold-start automotive scenarios or deep-sleep modes of battery-powered devices.
How does the Pin 3 (T) terminal function in ADR5043BRTZ-R2?
Pin 3 (T) is an internal temperature-sensing node. Per the datasheet, it is recommended to connect Pin 3 to V+ (Pin 1) to reduce thermal hysteresis and improve long-term stability-particularly in applications subject to repeated thermal cycling, such as outdoor environmental sensors.
ADR5043BRTZ-R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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:
- ±0.1%
- Temperature Coefficient:
- 75ppm/°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:
- SOT-23-3
ADR5043BRTZ-R2 FAQ
1.How can I place an order for ADR5043BRTZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR5043BRTZ-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 ADR5043BRTZ-R2 reliable?
The price and inventory of ADR5043BRTZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR5043BRTZ-R2 is usually 5 days.
3.What payment methods are accepted for ADR5043BRTZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR5043BRTZ-R2 transactions.
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4.How is shipping managed for ADR5043BRTZ-R2?
ADR5043BRTZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR5043BRTZ-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 ADR5043BRTZ-R2?
For technical support, including ADR5043BRTZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR5043BRTZ-R2 requirements.
6.How does Aetrix verify that ADR5043BRTZ-R2 is sourced from the original manufacturer or authorized distributors?
All ADR5043BRTZ-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 ADR5043BRTZ-R2 meets industry standards.
7.What is the process for return or replacement of ADR5043BRTZ-R2?
All ADR5043BRTZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADR5043BRTZ-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 ADR5043BRTZ-R2 part is unused and in its original packaging.
Return procedure for ADR5043BRTZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADR5043BRTZ-R2 Tags
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TL431BQDBZR
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LM4040DIM3X-2.5/NOPB
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AZ431LANTR-G1
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