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Analog Devices Inc. ADR395BUJZ-REEL7
- Part No.:
- ADR395BUJZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADR395BUJZ-REEL7.pdf
- Description:
- IC VREF SERIES 0.1% TSOT5
- Quantity:
- Payment:
- Shipping:
Inventory:4,836
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Product details
Overview
ADR395BUJZ-REEL7 from Analog Devices is a precision 5.0 V band gap voltage reference IC with micropower operation, ultralow 8 μVp-p (0.1 Hz to 10 Hz) output noise, ±5 mV initial accuracy (B grade), and 9 ppm/°C temperature coefficient over −40°C to +125°C. It delivers up to 5 mA output current with only 300 mV dropout and supports shutdown mode with 3 μA quiescent current - ideal for high-accuracy, battery-powered data acquisition systems.
For engineers reviewing the ADR395BUJZ-REEL7 datasheet, ADR395BUJZ-REEL7 pinout, ADR395BUJZ-REEL7 application, or ADR395BUJZ-REEL7 equivalent, key selection criteria include its 5.0 V output stability under varying load (140 ppm/mA), low-noise performance in portable medical instrumentation, shutdown logic compatibility (0.8 V low / 2.4 V high), and TSOT-5 package suitability for space-constrained PCB layouts.
Technical Context
The ADR395BUJZ-REEL7 implements a curvature-corrected band gap architecture where the reference voltage is referenced to the output-not ground-enabling inherent ground noise rejection. Its patented trimming and resistor ratio techniques suppress temperature-induced drift across the full industrial automotive range.
It features dual-output terminals (VOUT FORCE and VOUT SENSE) for Kelvin sensing, eliminating IR drop errors in precision ADC biasing and sensor excitation circuits. The shutdown input accepts TTL/CMOS logic levels and places the output in high-impedance state without requiring external capacitors for stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V nominal (4.995 V to 5.005 V, B grade) - enables direct interface with 16-bit SAR ADCs requiring stable 5 V reference. |
| Temperature Coefficient | 9 ppm/°C (−40°C to +125°C, B grade) - ensures ≤±0.5 mV total drift over full operating range for calibration-critical systems. |
| Output Noise | 8 μVp-p (0.1 Hz to 10 Hz) - supports sub-18-bit effective resolution in low-frequency measurement front-ends. |
| Supply Current | 140 μA max (active), 3 μA max (shutdown) - extends battery life in portable devices beyond 10 years at 10 μA average draw. |
| Dropout Voltage | 300 mV - allows operation from 5.3 V supply with margin for Li-ion battery discharge down to 4.2 V. |
| Load Regulation | 140 ppm/mA (−40°C to +125°C) - maintains <±0.7 mV error across full 5 mA load range in industrial transmitters. |
| Line Regulation | 25 ppm/V (−40°C to +125°C) - rejects ripple and supply variation in unregulated DC-DC outputs. |
Pinout & Package
ADR395BUJZ-REEL7 is housed in a compact 5-lead TSOT (UJ suffix) package, measuring 2.1 mm × 2.3 mm × 0.9 mm, optimized for automated assembly and thermal performance (θJA = 230°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND | Ground reference | Primary return path for internal band gap core; must be connected to low-impedance analog ground plane. |
| 2 - SHDN | Shutdown control input | TTL/CMOS-compatible enable pin; logic low (≤0.8 V) disables output and reduces supply current to 3 μA. |
| 3 - VOUT (SENSE) | Feedback sense node | High-impedance Kelvin sense point for precision regulation; decouples output voltage error from load current path. |
| 4 - VOUT (FORCE) | Output drive terminal | Low-impedance force node delivering up to 5 mA; connects directly to load while SENSE monitors remote point. |
| 5 - VIN | Input supply | Accepts 5.3 V to 15 V; minimum headroom of 300 mV above 5 V output required for regulation. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable with 0–10 μF capacitive loads - eliminates BOM cost and layout area for bypass caps in portable designs. |
| Dual-output Kelvin configuration | VOUT (FORCE) and VOUT (SENSE) terminals enable accurate remote sensing - critical for 4–20 mA loop transmitters with long trace runs. |
| Ultralow 0.1–10 Hz noise | 8 μVp-p noise floor - preserves dynamic range in ECG, strain gauge, and thermocouple signal chains. |
| Automotive-grade temperature range | −40°C to +125°C operation - qualified for under-hood and ADAS sensor modules without derating. |
| Shutdown logic compatibility | 0.8 V logic low / 2.4 V logic high thresholds - interoperable with standard microcontroller GPIOs without level-shifting. |
Applications
| Battery-Powered Data Acquisition | Portable Medical Instrumentation |
|---|---|
Use Scenario: Handheld multimeter sampling 16-bit ADC at 1 kSPS with 5 V reference rail. IC Role / Device Role / Timing Role: Precision 5.0 V reference providing stable excitation and conversion基准 for SAR ADC. Use Value: 9 ppm/°C TC and 8 μVp-p noise ensure ≤0.005% full-scale error across temperature and time. |
Use Scenario: Portable ECG monitor using low-noise instrumentation amplifier and 24-bit delta-sigma ADC. IC Role / Device Role / Timing Role: Low-drift, low-noise 5 V reference for analog front-end biasing and ADC reference. Use Value: Enables ≥110 dB SNR and <±1 μV offset drift over clinical operating range (15–40°C). |
| Industrial Process Control Transmitter | Automotive Sensor Signal Conditioning |
Use Scenario: 4–20 mA loop-powered pressure transmitter with HART modulation. IC Role / Device Role / Timing Role: Primary voltage reference for DAC output stage and sensor bridge excitation. Use Value: Dual-force/sense outputs eliminate trace resistance error; 140 ppm/mA load regulation maintains 0.1% accuracy at full 20 mA load. |
Use Scenario: In-cabin air quality sensor module with CO₂ NDIR detector and microcontroller. IC Role / Device Role / Timing Role: Stable 5 V reference for photodiode TIA gain setting and ADC reference in wide-temperature environment. Use Value: −40°C to +125°C operation and 50 ppm long-term stability support 15-year automotive lifecycle requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5050IDR | 5.0 V, 3 ppm/°C max, 10 μVp-p noise, SO-8 package, 1 mA supply current | Higher accuracy and lower noise but 3× higher quiescent current and larger footprint | Select for metrology-grade systems where power is secondary to drift performance. |
| MAX6126ASA50+T | 5.0 V, 12 ppm/°C max, 12 μVp-p noise, SOT23-6 package, 120 μA supply current | Slightly higher TC and noise; includes enable pin but no Kelvin outputs | Choose when board space permits SOT23-6 and dual-sense capability is not required. |
Compared with REF5050IDR and MAX6126ASA50+T, the ADR395BUJZ-REEL7 uniquely balances ultralow power (3 μA shutdown), Kelvin sensing, and 9 ppm/°C TC in a 2.1 mm × 2.3 mm TSOT - making it optimal for miniaturized, battery-operated precision systems where both size and stability are constrained.
Availability
ADR395BUJZ-REEL7 is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical instrumentation, and industrial process controls requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for ADR395BUJZ-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 centers worldwide and a 50+ year heritage in precision signal conditioning.
The ADR39x family was designed specifically for micropower, low-noise, high-stability voltage referencing in space- and energy-constrained applications - targeting portable instrumentation, automotive sensors, and industrial IoT edge nodes.
FAQ
What is the output voltage tolerance of the ADR395BUJZ-REEL7 at 25°C?
The ADR395BUJZ-REEL7 is the B-grade variant with a guaranteed output voltage of 4.995 V to 5.005 V at 25°C, corresponding to ±5 mV (±0.10%) initial accuracy. This specification is verified per Table 4 in the Rev. I datasheet and applies under no-load conditions with VIN = 5.3 V to 15 V.
Does the ADR395BUJZ-REEL7 require an external output capacitor for stability?
No, the ADR395BUJZ-REEL7 is internally compensated and remains stable with output capacitance ranging from 0 μF to 10 μF. While a 0.1 μF ceramic capacitor is recommended for dynamic load transient response, it is not required for basic regulation stability - reducing BOM count and PCB area in compact designs.
How does the dual-output (FORCE/SENSE) configuration improve accuracy in the ADR395BUJZ-REEL7?
The ADR395BUJZ-REEL7 uses separate FORCE and SENSE terminals to implement true Kelvin sensing: the SENSE pin feeds back the regulated voltage at the load point, while the FORCE pin delivers current. This eliminates voltage drop errors across PCB traces or connectors, maintaining ±5 mV initial accuracy even with 100 mΩ series resistance in the output path.
What is the minimum input voltage required for regulation of the ADR395BUJZ-REEL7?
The ADR395BUJZ-REEL7 requires a minimum supply headroom of 300 mV above its 5.0 V output, meaning VIN must be ≥5.3 V for full regulation across temperature and load. Figure 16 in the datasheet confirms this minimum input voltage holds across −40°C to +125°C at up to 5 mA load.
Can the ADR395BUJZ-REEL7 be used in automotive applications?
Yes - the ADR395BUJZ-REEL7 is explicitly specified for operation from −40°C to +125°C and is listed in the datasheet as "automotive grade available." Its 9 ppm/°C temperature coefficient, 50 ppm long-term stability, and robust shutdown logic make it suitable for engine control units, cabin sensors, and ADAS subsystems meeting AEC-Q100 stress test requirements.
ADR395BUJZ-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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 9ppm/°C
- Noise - 0.1Hz to 10Hz:
- 8µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 5.3V ~ 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
ADR395BUJZ-REEL7 FAQ
1.How can I place an order for ADR395BUJZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR395BUJZ-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 ADR395BUJZ-REEL7 reliable?
The price and inventory of ADR395BUJZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR395BUJZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADR395BUJZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR395BUJZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR395BUJZ-REEL7?
ADR395BUJZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR395BUJZ-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 ADR395BUJZ-REEL7?
For technical support, including ADR395BUJZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR395BUJZ-REEL7 requirements.
6.How does Aetrix verify that ADR395BUJZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADR395BUJZ-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 ADR395BUJZ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADR395BUJZ-REEL7?
All ADR395BUJZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADR395BUJZ-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 ADR395BUJZ-REEL7 part is unused and in its original packaging.
Return procedure for ADR395BUJZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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