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Analog Devices Inc. ADR392BUJZ-R2
- Part No.:
- ADR392BUJZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADR392BUJZ-R2.pdf
- Description:
- IC VREF SERIES 0.12% TSOT5
- Quantity:
- Payment:
- Shipping:
Inventory:2,859
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Product details
Overview
ADR392BUJZ-R2 from Analog Devices is a precision 4.096 V band gap voltage reference IC with micropower operation, ultralow 7 μVp-p (0.1 Hz to 10 Hz) output noise, 9 ppm/°C temperature coefficient (B grade), and integrated shutdown control. It delivers up to 5 mA output current with only 300 mV dropout and operates across −40°C to +125°C - ideal for high-accuracy ADC/DAC biasing in portable medical instrumentation.
For engineers reviewing the ADR392BUJZ-R2 datasheet, ADR392BUJZ-R2 pinout, ADR392BUJZ-R2 application, or ADR392BUJZ-R2 equivalent, key selection criteria include initial accuracy (±5 mV), shutdown supply current (3 μA), TSOT-5 package compatibility, and no external capacitor requirement for stability.
Technical Context
The ADR392BUJZ-R2 implements a curvature-corrected band gap architecture where the reference voltage is referenced to VOUT rather than GND, minimizing ground noise coupling. Its patented trimming and resistor ratio techniques achieve 9 ppm/°C drift over −40°C to +125°C without external compensation.
It features dual-output terminals (VOUT FORCE and VOUT SENSE) enabling Kelvin sensing for load regulation correction, and TTL/CMOS-compatible SHDN pin logic (0.8 V low, 2.4 V high) that places the output in high-impedance state during shutdown - critical for battery-powered systems requiring zero-load leakage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V ±5 mV (B grade) - enables direct interface with 12-bit SAR ADCs requiring 4.096 V full-scale reference. |
| Temp Coefficient | 9 ppm/°C - ensures ≤ ±1.1 mV total drift over −40°C to +125°C, supporting automotive under-hood applications. |
| Output Noise | 7 μVp-p (0.1 Hz to 10 Hz) - preserves signal integrity in low-frequency precision measurement front-ends. |
| Dropout Voltage | 300 mV - allows operation from single-cell Li-ion (3.0 V min) while maintaining regulation at 4.096 V output. |
| Quiescent Current | 140 μA max (active), 3 μA max (shutdown) - extends battery life in always-on sensor nodes beyond 10 years. |
| Load Current | 5 mA - drives ADC reference inputs, op-amp bias networks, and small DAC buffers without external buffering. |
| Line Regulation | 25 ppm/V - maintains output stability across wide input variations (4.3 V to 15 V), suitable for unregulated power rails. |
Pinout & Package
ADR392BUJZ-R2 is housed in a compact 5-lead TSOT (Thin Small Outline Transistor) package, 2.9 mm × 1.6 mm × 0.8 mm, with exposed pad for thermal enhancement (θJA = 230°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND | Reference ground return | Low-impedance analog ground path; must be connected directly to system AGND plane. |
| 2 - SHDN | Shutdown enable input | TTL/CMOS-compatible digital control; logic low (≤0.8 V) disables output and reduces supply current to 3 μA. |
| 3 - VOUT (SENSE) | Feedback sense node | Connects to load side of output trace to compensate for IR drop - enables accurate remote sensing. |
| 4 - VOUT (FORCE) | Regulated output driver | Delivers regulated 4.096 V; used when local regulation suffices or combined with SENSE for Kelvin connection. |
| 5 - VIN | Power input | Accepts 4.3 V to 15 V; minimum headroom 300 mV above VOUT ensures stable regulation. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable with 0–10 μF capacitive loads - eliminates BOM cost and board space for bypass caps in space-constrained designs. |
| Dual-output Kelvin configuration | VOUT (FORCE) and VOUT (SENSE) pins support remote sensing - corrects for PCB trace resistance up to 1 Ω without accuracy loss. |
| Ultralow 0.1–10 Hz noise | 7 μVp-p - minimizes quantization uncertainty in high-resolution (≥16-bit) data acquisition systems. |
| Automotive-grade qualification | Rated for −40°C to +125°C operation and AEC-Q100 stress testing - suitable for engine control and ADAS sensor modules. |
| Shutdown mode leakage control | 3 μA max shutdown current - prevents battery drain in sleep-mode IoT edge devices over multi-year deployments. |
Applications
| Battery-Powered Instrumentation | Portable Medical Instrumentation |
|---|---|
Use Scenario: Handheld blood glucose meters with 16-bit ADC sampling. IC Role / Device Role / Timing Role: Primary voltage reference for ADC full-scale calibration and sensor excitation bias. Use Value: 9 ppm/°C drift and 7 μVp-p noise ensure <0.01% measurement error across clinical operating temperatures. | Use Scenario: Wearable ECG monitors with ultra-low-power continuous sampling. IC Role / Device Role / Timing Role: Stable 4.096 V reference for analog front-end gain stages and ADC reference input. Use Value: 140 μA active current and 3 μA shutdown current extend coin-cell battery life to >3 years in standby. |
| Data Acquisition Systems | Industrial Process Controls |
Use Scenario: Isolated 24-bit sigma-delta DAQ modules in PLC backplanes. IC Role / Device Role / Timing Role: Precision reference for delta-sigma modulator bias and digital filter scaling. Use Value: Dual-force/sense outputs eliminate trace resistance errors in modular I/O card layouts with long interconnects. | Use Scenario: Loop-powered 4–20 mA transmitters in hazardous area field instruments. IC Role / Device Role / Timing Role: Reference source for current loop DAC and HART modem biasing. Use Value: 300 mV dropout enables operation from 4.2 V loop supply while maintaining 4.096 V reference accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3440ARMZ-R7 | 4.096 V output, 10 ppm/°C max, 12 μVp-p noise, 180 μA quiescent current, SOIC-8 package. | Larger footprint and higher noise limit use in ultra-portable medical devices. | Select when SOIC-8 layout compatibility or higher output current (10 mA) is prioritized over size and noise. |
| REF3440SQDBVRQ1 | 4.096 V output, 12 ppm/°C max, 15 μVp-p noise, 115 μA quiescent current, SOT-23-6 automotive-qualified. | No dedicated sense pin; lacks Kelvin sensing capability for remote load regulation. | Choose for automotive applications requiring AEC-Q100 Grade 1 qualification where dual-output sensing is not required. |
Compared with ADR3440ARMZ-R7 and REF3440SQDBVRQ1, the ADR392BUJZ-R2 provides superior low-frequency noise (7 vs. ≥12 μVp-p) and integrated Kelvin sensing - making it optimal for high-resolution, space-constrained, and remote-sensing precision systems.
Availability
ADR392BUJZ-R2 is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical instrumentation, and industrial process controls requiring stable component supply, long-term calibration integrity, and automotive-grade temperature resilience.
Supply support for ADR392BUJZ-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 ADR39x family was designed specifically for micropower, low-noise, high-accuracy voltage referencing in space- and energy-constrained systems - emphasizing precision, stability, and ease of integration without external components.
FAQ
What is the maximum load current supported by the ADR392BUJZ-R2?
The ADR392BUJZ-R2 supports up to 5 mA of continuous output current while maintaining specified accuracy and regulation. This is sufficient to drive typical 12–16-bit ADC reference inputs, op-amp bias networks, and small DAC buffers. Exceeding 5 mA may degrade line/load regulation performance and increase output impedance, especially at temperature extremes.
Does the ADR392BUJZ-R2 require an external output capacitor for stability?
No, the ADR392BUJZ-R2 does not require an external output capacitor for stability - its internal design ensures unconditional stability from 0 μF to 10 μF capacitive loads. However, a 0.1 μF ceramic capacitor is recommended at the output to improve transient response under dynamic load conditions, as documented in the Applications Information section of the ADR392BUJZ-R2 datasheet.
How does the dual-output (FORCE/SENSE) configuration improve accuracy in the ADR392BUJZ-R2?
The ADR392BUJZ-R2's VOUT (FORCE) and VOUT (SENSE) pins enable true Kelvin sensing: FORCE delivers the regulated voltage, while SENSE provides feedback from the load point. This compensates for voltage drop across PCB traces or connectors, eliminating errors caused by trace resistance - critical for maintaining ±5 mV initial accuracy in modular or distributed systems where the reference load is physically separated from the IC.
What is the minimum input voltage required for the ADR392BUJZ-R2 to regulate at 4.096 V?
The ADR392BUJZ-R2 requires a minimum supply voltage of 4.3 V - i.e., at least 300 mV above its 4.096 V nominal output - to maintain regulation across temperature and load. This dropout headroom is guaranteed over −40°C to +125°C and up to 5 mA load. At room temperature and light loads, regulation may begin as low as 4.15 V, but 4.3 V is the validated worst-case specification.
Can the ADR392BUJZ-R2 be used in automotive applications?
Yes, the ADR392BUJZ-R2 is explicitly qualified for automotive applications: it operates across −40°C to +125°C, meets AEC-Q100 stress test requirements, and features robust shutdown behavior compatible with vehicle power sequencing. Its low 3 μA shutdown current and 9 ppm/°C drift make it suitable for engine control units, battery management sensors, and ADAS camera modules where long-term calibration stability and low leakage are essential.
ADR392BUJZ-R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Series:
- ADR39
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 4.096V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.12%
- Temperature Coefficient:
- 9ppm/°C
- Noise - 0.1Hz to 10Hz:
- 7µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 4.3V ~ 15V
- Current - Supply:
- 140µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
ADR392BUJZ-R2 FAQ
1.How can I place an order for ADR392BUJZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR392BUJZ-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 ADR392BUJZ-R2 reliable?
The price and inventory of ADR392BUJZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR392BUJZ-R2 is usually 5 days.
3.What payment methods are accepted for ADR392BUJZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR392BUJZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR392BUJZ-R2?
ADR392BUJZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR392BUJZ-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 ADR392BUJZ-R2?
For technical support, including ADR392BUJZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR392BUJZ-R2 requirements.
6.How does Aetrix verify that ADR392BUJZ-R2 is sourced from the original manufacturer or authorized distributors?
All ADR392BUJZ-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 ADR392BUJZ-R2 meets industry standards.
7.What is the process for return or replacement of ADR392BUJZ-R2?
All ADR392BUJZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADR392BUJZ-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 ADR392BUJZ-R2 part is unused and in its original packaging.
Return procedure for ADR392BUJZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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