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Analog Devices Inc. ADR392BUJZ-REEL7
- Part No.:
- ADR392BUJZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADR392BUJZ-REEL7.pdf
- Description:
- IC VREF SERIES 0.12% TSOT5
- Quantity:
- Payment:
- Shipping:
Inventory:763
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Product details
Overview
ADR392BUJZ-REEL7 from Analog Devices is a precision 4.096 V micropower band gap voltage reference with shutdown, designed for high-accuracy analog signal chains in space-constrained systems. It delivers ±5 mV initial accuracy (B grade), 9 ppm/°C temperature coefficient, and ultralow 7 μVp-p (0.1 Hz to 10 Hz) output noise - enabling stable reference performance in battery-powered data acquisition and portable medical instrumentation.
For engineers reviewing the ADR392BUJZ-REEL7 datasheet, ADR392BUJZ-REEL7 pinout, ADR392BUJZ-REEL7 application, or ADR392BUJZ-REEL7 equivalent, key selection considerations include its 5 mA output drive capability, 300 mV dropout, 140 μA operating current, and TSOT-5 package compatibility with low-noise, low-power, and automotive-grade designs.
Technical Context
The ADR392BUJZ-REEL7 implements a curvature-corrected band gap architecture where the reference voltage is referenced to the output rather than ground - significantly attenuating ground noise coupling into VOUT. Its patented trimming and resistor ratio techniques achieve 9 ppm/°C drift over −40°C to +125°C without external capacitors.
It features dual-output terminals (VOUT FORCE and VOUT SENSE) for Kelvin sensing, TTL/CMOS-compatible SHDN control with 3 μA shutdown current, and inherent stability across 0–10 μF capacitive loads. The device operates from a minimum input of 4.3 V (300 mV headroom above 4.096 V) and supports dynamic load transient response within 20 μs settling time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V nominal - precisely matches 12-bit DAC/ADC full-scale scaling and enables direct interface with 4.096 V reference rails. |
| Initial Accuracy | ±5 mV maximum (B grade) - ensures ≤0.12% error at room temperature without calibration. |
| Temp Coefficient | 9 ppm/°C (−40°C to +125°C) - guarantees <±0.5 mV total drift over full industrial temperature range. |
| Output Noise | 7 μVp-p (0.1 Hz to 10 Hz) - supports high-resolution (≥18-bit) measurement systems without added filtering. |
| Quiescent Current | 140 μA max in operation - enables multi-year battery life in always-on sensor nodes drawing <150 μA system current. |
| Shutdown Current | 3 μA maximum - reduces standby power by >97% versus active mode, critical for duty-cycled IoT endpoints. |
| Dropout Voltage | 300 mV - allows operation from single-cell Li-ion (3.0 V min) or two-cell alkaline (3.2 V min) supplies. |
Pinout & Package
ADR392BUJZ-REEL7 is housed in a compact 5-lead TSOT (UJ suffix) package - 2.9 mm × 1.6 mm × 0.8 mm - optimized for high-density PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: GND | Ground reference | Primary return path for internal bias and output current; must be connected to low-impedance system ground plane. |
| 2: SHDN | Shutdown control input | TTL/CMOS-compatible digital enable; logic low (≤0.8 V) disables output and reduces supply current to 3 μA. |
| 3: VOUT (SENSE) | Regulated output sense node | Feedback point for internal error amplifier - connect directly to load or ADC reference input for highest accuracy. |
| 4: VOUT (FORCE) | Output drive terminal | Delivers output current; use with SENSE for 4-wire Kelvin connection to eliminate trace resistance errors. |
| 5: VIN | Input supply | Accepts 4.3 V to 15 V; requires ≥300 mV headroom above 4.096 V for regulation; no bypass capacitor required. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable operation with 0–10 μF capacitive loads eliminates BOM cost and layout area for decoupling components. |
| Dual-output Kelvin configuration | VOUT (FORCE) and VOUT (SENSE) terminals enable remote sensing to reject voltage drop in PCB traces or connectors. |
| Ultralow 0.1–10 Hz noise | 7 μVp-p noise floor supports high-precision DC measurements in weigh scales, thermocouple amplifiers, and pH sensors. |
| Automotive-grade qualification | Specified for −40°C to +125°C operation and qualified per AEC-Q100 - suitable for engine control, ADAS sensor modules, and infotainment power rails. |
| Low dropout & micropower | 300 mV dropout + 140 μA supply current enables direct regulation from partially discharged batteries in portable diagnostics tools. |
Applications
| Battery-Powered Data Acquisition | Portable Medical Instrumentation |
|---|---|
Use Scenario: Handheld multimeters and environmental sensor loggers powered by coin cells or AA batteries. IC Role / Device Role / Timing Role: Provides stable 4.096 V reference for 12–16-bit SAR ADCs and precision DACs during intermittent sampling. Use Value: Enables ±0.1% measurement accuracy over battery discharge (3.0–1.8 V) without recalibration due to low dropout and tight tempco. |
Use Scenario: Wearable ECG monitors and glucose meters requiring FDA-grade signal integrity and multi-year battery life. IC Role / Device Role / Timing Role: Serves as master reference for analog front-end gain stages and ADC conversion, rejecting board-level ground noise via Kelvin sensing. Use Value: 7 μVp-p noise and 9 ppm/°C drift ensure sub-microvolt baseline stability critical for detecting <10 μV cardiac waveforms. |
| Industrial Process Control Sensors | Automotive Sensor Signal Conditioning |
Use Scenario: Loop-powered 4–20 mA transmitters in hazardous-area pressure and flow sensors. IC Role / Device Role / Timing Role: Supplies excitation and reference for bridge sensors and instrumentation amplifiers in 2-wire field devices. Use Value: 140 μA quiescent current and 300 mV dropout allow full functionality within the 3.5–4.0 V headroom available in 4–20 mA loop designs. |
Use Scenario: Tire pressure monitoring systems (TPMS) and cabin air quality sensors operating under engine bay thermal stress. IC Role / Device Role / Timing Role: Delivers calibrated reference to MEMS sensor ASICs and CAN/LIN transceiver bias networks. Use Value: AEC-Q100 qualification and −40°C to +125°C guaranteed performance ensure reliable operation across extreme automotive thermal cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3440RTCT | 4.096 V, 5 ppm/°C max, 3.5 μVp-p noise, but requires 1.5 V headroom (higher dropout) and 500 μA quiescent current. | Better noise and tempco, but unsuitable for ultra-low-power or single-cell battery systems due to higher current and dropout. | Select REF3440RTCT only when ultimate 18-bit system noise floor is prioritized over battery life and supply headroom. |
| MAX6126AASA41+ | 4.096 V, 15 ppm/°C max, 12 μVp-p noise, 60 μA quiescent current, no shutdown, SO-8 package (larger footprint). | Lower power than ADR392BUJZ-REEL7 but lacks shutdown and has higher noise/tempco - better for cost-sensitive industrial PLCs than portable medical gear. | Choose MAX6126AASA41+ for fixed-supply, non-battery applications where TSOT-5 size and shutdown are not required. |
Compared with REF3440RTCT and MAX6126AASA41+, ADR392BUJZ-REEL7 uniquely balances micropower operation (140 μA), ultra-low noise (7 μVp-p), Kelvin sensing, and TSOT-5 size - making it optimal for space- and energy-constrained 12–16-bit portable instrumentation where both accuracy and longevity matter.
Availability
ADR392BUJZ-REEL7 is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical instrumentation, and industrial process controls requiring stable component supply with guaranteed long-term availability and consistent parametric performance.
Supply support for ADR392BUJZ-REEL7 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, with design and manufacturing expertise spanning over 50 years.
The ADR39x family was developed specifically for ultra-low-power, high-accuracy reference needs in portable, automotive, and industrial measurement systems - emphasizing minimal board area, no external components, and guaranteed performance across extended temperature ranges.
FAQ
What is the output voltage tolerance and temperature coefficient of the ADR392BUJZ-REEL7?
The ADR392BUJZ-REEL7 is a B-grade device with a nominal output voltage of 4.096 V, initial accuracy of ±5 mV (±0.12%), and a maximum temperature coefficient of 9 ppm/°C over −40°C to +125°C. These values are fully specified and tested per Analog Devices' Rev. I datasheet, ensuring predictable performance in precision analog circuits without user calibration.
Does the ADR392BUJZ-REEL7 require an external output capacitor for stability?
No, the ADR392BUJZ-REEL7 is internally compensated and stable with capacitive loads from 0 μF to 10 μF. While a 0.1 μF ceramic capacitor on VOUT is recommended for dynamic load transient suppression, it is not required for basic regulation stability - reducing BOM count and PCB area in space-constrained designs.
How does the dual-output (FORCE/SENSE) configuration improve accuracy in the ADR392BUJZ-REEL7?
The ADR392BUJZ-REEL7 uses separate VOUT (FORCE) and VOUT (SENSE) pins to implement true Kelvin sensing: the SENSE pin connects directly to the load or ADC reference input, while FORCE delivers current. This eliminates voltage drop errors caused by PCB trace resistance, maintaining ±5 mV accuracy even with >1 Ω series impedance in high-precision sensor interfaces.
What is the minimum input voltage required for the ADR392BUJZ-REEL7 to regulate properly?
The ADR392BUJZ-REEL7 requires a minimum supply voltage of 4.3 V - exactly 300 mV above its 4.096 V output - to maintain regulation across temperature and load. This low dropout enables operation from partially discharged lithium coin cells (e.g., CR2032 at 2.8 V) when paired with a boost converter, or directly from two alkaline cells (3.2 V fresh).
Can the ADR392BUJZ-REEL7 be used in automotive applications?
Yes, the ADR392BUJZ-REEL7 is explicitly specified for −40°C to +125°C operation and qualifies as automotive-grade per the ADR39x family datasheet. Its robustness against thermal cycling, supply ripple rejection (−80 dB at 60 Hz), and low noise make it suitable for engine control units, TPMS, and cabin sensor modules requiring AEC-Q100 alignment.
ADR392BUJZ-REEL7 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:
- Active
- 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-REEL7 FAQ
1.How can I place an order for ADR392BUJZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR392BUJZ-REEL7 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-REEL7 reliable?
The price and inventory of ADR392BUJZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR392BUJZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADR392BUJZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR392BUJZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR392BUJZ-REEL7?
ADR392BUJZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR392BUJZ-REEL7 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-REEL7?
For technical support, including ADR392BUJZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR392BUJZ-REEL7 requirements.
6.How does Aetrix verify that ADR392BUJZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADR392BUJZ-REEL7 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-REEL7 meets industry standards.
7.What is the process for return or replacement of ADR392BUJZ-REEL7?
All ADR392BUJZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADR392BUJZ-REEL7, 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-REEL7 part is unused and in its original packaging.
Return procedure for ADR392BUJZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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