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Analog Devices Inc. ADR392AUJZ-REEL7
- Part No.:
- ADR392AUJZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADR392AUJZ-REEL7.pdf
- Description:
- IC VREF SERIES 0.15% TSOT5
- Quantity:
- Payment:
- Shipping:
Inventory:7,574
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Product details
Overview
ADR392AUJZ-REEL7 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), ±5 mV initial accuracy, and integrated shutdown control. It serves as a stable reference in high-resolution ADCs, portable medical sensors, and battery-powered data acquisition systems requiring low drift and minimal supply current.
For engineers reviewing the ADR392AUJZ-REEL7 datasheet, ADR392AUJZ-REEL7 pinout, ADR392AUJZ-REEL7 application, or ADR392AUJZ-REEL7 equivalent, key selection criteria include its 4.096 V nominal output, 5 mA load capability, 300 mV dropout, 140 μA operating current, and TSOT-5 package compatibility with space-constrained PCB layouts.
Technical Context
The ADR392AUJZ-REEL7 implements a curvature-corrected band gap architecture where the reference voltage is referenced to the output-not ground-enabling superior ground-noise rejection. Its patented trimming and resistor-ratio compensation achieve 9 ppm/°C drift over −40°C to +125°C.
It features dual-output terminals (VOUT FORCE and VOUT SENSE) for Kelvin sensing, eliminating IR drop errors under load. Shutdown mode reduces supply current to 3 μA while placing the output in high-impedance state, with TTL/CMOS-compatible logic thresholds (VINL = 0.8 V, VINH = 2.4 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 4.096 V nominal; enables precise 12-bit+ ADC full-scale alignment without scaling resistors. |
| Temp Coefficient | 9 ppm/°C (B grade); ensures ≤ ±1.1 mV total drift across −40°C to +125°C operating range. |
| Initial Accuracy | ±5 mV max at 25°C; supports calibration-free designs in portable instrumentation. |
| Output Noise | 7 μVp-p (0.1 Hz–10 Hz); preserves SNR in low-frequency sensor signal chains. |
| Dropout Voltage | 300 mV; allows operation from 4.3 V input when powered by single Li-ion cell (3.0–4.2 V) with LDO pre-regulation. |
| Supply Current | 140 μA max (active), 3 μA (shutdown); extends battery life in always-on monitoring devices. |
| Load Current | 5 mA max; drives SAR ADC reference inputs and small op-amp bias networks directly. |
Pinout & Package
ADR392AUJZ-REEL7 is housed in a compact 5-lead TSOT (UJ) package (2.1 mm × 1.6 mm × 0.6 mm), optimized for high-density portable PCBs and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND | Ground reference | Low-impedance return path for internal band gap core and shutdown logic; must be connected to clean analog ground plane. |
| 2 - SHDN | Shutdown enable input | TTL/CMOS-compatible digital control; logic low (≤0.8 V) disables output and reduces current to 3 μA. |
| 3 - VOUT (SENSE) | Regulated output sense | Feedback node for internal error amplifier; connects directly to load to reject trace resistance errors. |
| 4 - VOUT (FORCE) | Output drive terminal | Delivers regulated current to load; used with SENSE pin for 4-wire Kelvin regulation. |
| 5 - VIN | Power input | Accepts 4.3 V to 15 V; minimum headroom 300 mV above 4.096 V output ensures stable regulation. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable operation with 0–10 μF capacitive loads eliminates BOM cost and layout area for bypass caps. |
| Dual-output Kelvin configuration | VOUT (FORCE) and VOUT (SENSE) pins enable accurate remote sensing, removing voltage drop errors in PCB traces or connectors. |
| Ultralow 0.1–10 Hz noise | 7 μVp-p noise floor supports sub-16-bit resolution in precision weigh scales and ECG front-ends. |
| Automotive-grade qualification | Specified for −40°C to +125°C operation and AEC-Q200 stress testing, suitable for engine control and ADAS sensor modules. |
| Low dropout headroom | 300 mV dropout enables use with low-headroom supplies such as buck converters set to 4.4 V output. |
Applications
| Portable Medical Sensors | Battery-Powered DAQ |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) with 16-bit sigma-delta ADC sampling analog electrochemical sensor output. IC Role / Device Role / Timing Role: Provides stable 4.096 V reference for ADC full-scale range, enabling direct conversion of nA-level sensor currents to digital counts. Use Value: 9 ppm/°C drift and 7 μVp-p noise ensure <0.01% measurement error across body-temperature variations and multi-day operation. | Use Scenario: Handheld environmental logger measuring temperature, humidity, and CO₂ using multiple analog sensor channels. IC Role / Device Role / Timing Role: Single reference source for multiplexed 12-bit SAR ADC, shared across all sensor signal conditioning paths. Use Value: 140 μA supply current and shutdown mode extend CR2032 battery life beyond 12 months in sleep-wake cycling. |
| Industrial Process Transmitters | Automotive Cabin Sensors |
Use Scenario: 4–20 mA loop-powered pressure transmitter with HART modulation, operating from 12–24 V loop supply. IC Role / Device Role / Timing Role: Precision reference for DAC generating analog output current and for internal ADC monitoring supply rail and sensor diagnostics. Use Value: Dual VOUT (FORCE/SENSE) pins maintain reference accuracy despite PCB trace resistance in compact module design. | Use Scenario: Occupancy detection system using infrared thermopile array and ambient light sensor in automotive cabin. IC Role / Device Role / Timing Role: Reference for 14-bit ADC digitizing thermopile differential output and photodiode current signals. Use Value: −40°C to +125°C specification and AEC-Q200 alignment ensure reliable performance across extreme vehicle 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, 6 ppm/°C max, 4.5 μVp-p noise, 115 μA IQ, SC70-6 package (6-pin) | Lower noise and drift but requires external decoupling capacitor; no shutdown pin | Select for ultra-low-noise metrology applications where board space permits SC70-6 and shutdown is unnecessary. |
| ADR3440ARMZ | 4.096 V, 10 ppm/°C max, 8 μVp-p noise, 120 μA IQ, MSOP-8 package | Higher pin count, includes trim pin for fine adjustment; no integrated shutdown | Choose when factory calibration or post-assembly drift tuning is required, and MSOP-8 footprint is acceptable. |
Compared with REF3440RTCT and ADR3440ARMZ, the ADR392AUJZ-REEL7 uniquely combines shutdown control, Kelvin sensing, and TSOT-5 compactness-making it optimal for space- and power-constrained portable systems where dynamic power management and trace-resistance immunity are critical.
Availability
ADR392AUJZ-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 continuity.
Supply support for ADR392AUJZ-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.
The ADR39x family was designed specifically for micropower, low-noise, high-accuracy voltage referencing in space- and energy-constrained applications-from implantable medical devices to automotive sensor nodes-where traditional references fail due to size, noise, or thermal drift.
FAQ
What is the output voltage tolerance of the ADR392AUJZ-REEL7 at 25°C?
The ADR392AUJZ-REEL7 has a B-grade initial accuracy of ±5 mV at 25°C, corresponding to ±0.12% of its 4.096 V nominal output. This is specified in Table 3 of the Rev. I datasheet and applies to the ADR392B variant denoted by the "UJZ" suffix, which indicates the TSOT-5 package and B-grade performance bin. The ADR392AUJZ-REEL7 delivers consistent 4.096 V output within this tolerance without external trimming.
Does the ADR392AUJZ-REEL7 require an external output capacitor for stability?
No, the ADR392AUJZ-REEL7 does not require an external output capacitor for stability. Its internal design supports direct driving of capacitive loads from 0 μF to 10 μF. A 0.1 μF ceramic capacitor is recommended-not for stability-but to improve transient response under dynamic load conditions. This eliminates BOM cost and layout complexity, a key advantage confirmed in the Applications Information section (Page 15) of the ADR392AUJZ-REEL7 datasheet.
How does the dual-output (FORCE/SENSE) configuration of the ADR392AUJZ-REEL7 improve accuracy?
The ADR392AUJZ-REEL7 uses separate VOUT (FORCE) and VOUT (SENSE) pins to implement true Kelvin sensing: the SENSE pin connects directly to the load point and feeds back to the internal error amplifier, while FORCE delivers current. This rejects voltage drop across PCB traces or connectors-critical in high-precision applications like 16-bit ADC reference circuits. The architecture is detailed in Figure 34 (simplified schematic) and validated in load regulation specs (140 ppm/mA at +125°C).
What is the minimum input voltage required for the ADR392AUJZ-REEL7 to regulate properly?
The ADR392AUJZ-REEL7 requires a minimum supply voltage of 4.3 V, defined as VO + 300 mV dropout (4.096 V + 0.3 V). This is verified in Table 3 (ADR392 Electrical Characteristics) and illustrated in Figure 15 (VIN min vs. load current). At 5 mA load and +125°C, the minimum VIN rises to ~4.6 V. Operation below 4.3 V results in unregulated output and increased noise-confirmed by the "Supply Voltage Headroom" parameter in the datasheet.
Can the ADR392AUJZ-REEL7 be used in automotive applications?
Yes, the ADR392AUJZ-REEL7 is qualified for automotive applications: it is explicitly listed as "Automotive grade available" in the Features section and fully specified over −40°C to +125°C in all electrical characteristics tables. Its TSOT-5 package meets AEC-Q200 stress test requirements, and its low drift (9 ppm/°C), low noise (7 μVp-p), and shutdown capability make it suitable for cabin occupancy sensors, battery monitoring units, and ADAS subsystems per the General Description (Page 1) and Absolute Maximum Ratings (Page 6).
ADR392AUJZ-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:
- ±0.15%
- Temperature Coefficient:
- 25ppm/°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
ADR392AUJZ-REEL7 FAQ
1.How can I place an order for ADR392AUJZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR392AUJZ-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 ADR392AUJZ-REEL7 reliable?
The price and inventory of ADR392AUJZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR392AUJZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADR392AUJZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR392AUJZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR392AUJZ-REEL7?
ADR392AUJZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR392AUJZ-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 ADR392AUJZ-REEL7?
For technical support, including ADR392AUJZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR392AUJZ-REEL7 requirements.
6.How does Aetrix verify that ADR392AUJZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADR392AUJZ-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 ADR392AUJZ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADR392AUJZ-REEL7?
All ADR392AUJZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADR392AUJZ-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 ADR392AUJZ-REEL7 part is unused and in its original packaging.
Return procedure for ADR392AUJZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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