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Analog Devices Inc. ADR395AUJZ-REEL7
- Part No.:
- ADR395AUJZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADR395AUJZ-REEL7.pdf
- Description:
- IC VREF SERIES 0.12% TSOT5
- Quantity:
- Payment:
- Shipping:
Inventory:8,761
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Product details
Overview
ADR395AUJZ-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, 9 ppm/°C temperature coefficient (B grade), ±5 mV initial accuracy, and integrated shutdown control. It operates from a minimum supply headroom of 300 mV above VOUT and delivers up to 5 mA output current-ideal for high-resolution ADC biasing in portable medical instrumentation.
For engineers reviewing the ADR395AUJZ-REEL7 datasheet, ADR395AUJZ-REEL7 pinout, ADR395AUJZ-REEL7 application, or ADR395AUJZ-REEL7 equivalent, key selection criteria include guaranteed 5.000 V output at 25°C, −40°C to +125°C automotive-grade operating range, TSOT-5 package compatibility, and TTL/CMOS-compatible SHDN logic interface with 3 μA shutdown current.
Technical Context
The ADR395AUJZ-REEL7 implements a curvature-corrected band gap reference architecture where the zero-TC voltage is referenced to VOUT rather than ground-providing inherent ground-noise rejection. 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)) enabling Kelvin sensing for load regulation compensation, and supports stacking configurations for arbitrary reference voltages. Shutdown mode places the output in high-impedance state with 3 μA supply current and defined logic thresholds (VINL = 0.8 V, VINH = 2.4 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V nominal at 25°C; B-grade tolerance ±5 mV ensures ≤0.1% error in 16-bit DAC/ADC reference paths. |
| Tempco | 9 ppm/°C (B grade); guarantees ≤±0.55 mV drift across −40°C to +125°C ambient-critical for automotive sensor signal chains. |
| Noise (0.1–10 Hz) | 8 μVp-p; enables <18-bit ENOB in precision data acquisition systems without post-filtering. |
| Dropout Voltage | 300 mV min headroom; allows operation from 5.3 V supply in battery-powered systems with aging Li-ion cells. |
| Quiescent Current | 140 μA max in operation; supports >1-year runtime on coin-cell batteries in wireless sensor nodes. |
| Shutdown Current | 3 μA max; enables ultra-low-power wake-on-event architectures with microcontroller-controlled reference enable. |
| Load Current | 5 mA max; sufficient to drive SAR ADC reference inputs, op-amp bias networks, and small DACs directly. |
Pinout & Package
ADR395AUJZ-REEL7 is housed in a compact 5-lead TSOT (UJ) package, 1.5 mm × 1.0 mm × 0.55 mm, with exposed pad for thermal enhancement (θJA = 230°C/W). The lead frame is RoHS-compliant and suitable for reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Primary return path for internal band gap core; must be low-impedance connection to system ground plane. |
| 2 SHDN | Shutdown control input | TTL/CMOS-compatible digital enable; logic low (≤0.8 V) disables output, placing it in high-Z state. |
| 3 VOUT(SENSE) | Regulated output sense node | Feedback point for internal error amplifier; connects directly to load for precise Kelvin sensing. |
| 4 VOUT(FORCE) | Output drive node | Delivers regulated current to load; used with VOUT(SENSE) to compensate for trace resistance drop. |
| 5 VIN | Supply input | Accepts 5.3 V to 15 V; minimum 5.3 V ensures ≥300 mV headroom above 5.0 V output under full load. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable operation with 0–10 μF capacitive loads eliminates board space and cost of bypass components. |
| Dual-output Kelvin configuration | VOUT(FORCE)/VOUT(SENSE) separation enables <±10 ppm load regulation error in high-precision measurement front-ends. |
| Ultralow 0.1–10 Hz noise | 8 μVp-p noise floor supports sub-μV resolution in DC-coupled biomedical amplifiers and weigh-scale bridges. |
| Automotive-grade temperature range | −40°C to +125°C operation qualified per AEC-Q100; suitable for engine control unit (ECU) sensor reference rails. |
| Stackable reference topology | Enables generation of 10 V (ADR395 + ADR395) or 9.096 V (ADR395 + ADR392) without trimming resistors or op amps. |
Applications
| Battery-Powered Instrumentation | Portable Medical Instrumentation |
|---|---|
Use Scenario: Handheld multimeter with 6½-digit resolution requiring stable 5.0 V reference for dual-slope ADC integration. IC Role / Device Role / Timing Role: Primary voltage reference source for analog front-end and ADC conversion clock timing stability. Use Value: 9 ppm/°C tempco and 8 μVp-p noise ensure <0.002% reading accuracy across operating temperature and battery discharge cycle. | Use Scenario: Wearable ECG monitor using 24-bit sigma-delta ADC with programmable gain amplifier. IC Role / Device Role / Timing Role: Precision bias reference for PGA and ADC reference input, enabling <1 μV RMS input-referred noise. Use Value: Dual-output Kelvin sensing maintains <±5 ppm load regulation error despite variable electrode impedance and PCB trace resistance. |
| Data Acquisition Systems | Industrial Process Controls |
Use Scenario: Isolated 16-channel industrial DAQ module sampling thermocouples and RTDs at 1 kSPS. IC Role / Device Role / Timing Role: Shared reference for multiplexed ADC channel calibration and cold-junction compensation circuitry. Use Value: 140 μA quiescent current and 5 mA drive capability allow single ADR395AUJZ-REEL7 to serve all channels with <0.1 LSB gain error drift. | Use Scenario: Loop-powered 4–20 mA transmitter with HART modulation, operating in hazardous environments. IC Role / Device Role / Timing Role: Stable 5.0 V reference for DAC output stage and sensor excitation circuitry. Use Value: −40°C to +125°C rating and 3 μA shutdown current support fail-safe operation during brownout and maintenance modes. |
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 tempco, 10 μVp-p noise, 1 mA max IQ, SOIC-8 package | Lower drift but higher quiescent current and larger footprint; requires external decoupling capacitor | Preferred when long-term stability (<15 ppm/1000 hrs) and ultra-low drift dominate over size and power |
| MAX6126AASA50+ | 5.0 V, 12 ppm/°C max tempco, 12 μVp-p noise, 120 μA max IQ, SOIC-8 package | Higher noise and drift, but includes factory-trimmed enable delay and improved PSRR (−95 dB) | Selected when supply ripple rejection and controlled power-up sequencing are critical in noisy industrial supplies |
Compared with REF5050IDR and MAX6126AASA50+, the ADR395AUJZ-REEL7 offers the smallest footprint and lowest operating current while maintaining 9 ppm/°C drift-making it optimal for space-constrained, battery-operated systems where moderate noise and drift are acceptable trade-offs for micropower and TSOT integration.
Availability
ADR395AUJZ-REEL7 is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical instrumentation, and industrial process controls requiring stable component supply with automotive-grade temperature performance and long-lifecycle availability.
Supply support for ADR395AUJZ-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 precision voltage referencing in space- and energy-constrained applications-including portable diagnostics, automotive sensors, and industrial IoT edge nodes-where traditional references fail due to size, power, or drift limitations.
FAQ
What is the guaranteed output voltage tolerance for ADR395AUJZ-REEL7 at 25°C?
The ADR395AUJZ-REEL7 is a B-grade device with a guaranteed initial accuracy of ±5 mV at 25°C, corresponding to a 5.000 V nominal output ranging from 4.995 V to 5.005 V. This specification is verified across production lots and applies under standard test conditions (VIN = 5.3 V to 15 V, no load, TA = 25°C). The ADR395AUJZ-REEL7 datasheet Table 4 explicitly defines this limit for the B grade, and the part number suffix "UJZ" confirms the TSOT-5 package and B-grade performance bin.
Does ADR395AUJZ-REEL7 require an external output capacitor for stability?
No, the ADR395AUJZ-REEL7 does not require an external output capacitor for stability-the internal design is compensated for 0 μF to 10 μF capacitive loads. A 0.1 μF ceramic capacitor is recommended at the output to improve dynamic load transient response, but omission does not cause oscillation or instability. This is confirmed in the Applications Information section (Page 15) and Typical Performance Characteristics (Figure 22–26), which show stable behavior with CBYPASS = 0 μF. The ADR395AUJZ-REEL7 achieves this via patented internal compensation, eliminating layout dependencies common in older reference ICs.
What is the minimum input voltage required for ADR395AUJZ-REEL7 to regulate at full 5 mA load?
The ADR395AUJZ-REEL7 requires a minimum supply voltage of 5.3 V to maintain regulation at 5 mA load, based on its 300 mV dropout specification (VIN − VOUT ≥ 300 mV). At 25°C and full load, Figure 16 shows VIN(min) ≈ 5.2 V at 5 mA, rising to ~5.6 V at +125°C. Therefore, 5.3 V is the conservative minimum ensuring regulation across temperature and process variation. This value is derived directly from the "Supply Voltage Headroom" parameter in Table 4 and validated by the VIN vs. Load Current curves in the ADR395 Electrical Characteristics section (Page 5 and Figure 16).
How does the dual-output (FORCE/SENSE) configuration of ADR395AUJZ-REEL7 improve accuracy?
The VOUT(FORCE) and VOUT(SENSE) pins implement a Kelvin sensing architecture: VOUT(SENSE) provides feedback to the internal error amplifier, while VOUT(FORCE) delivers current to the load. This separates the high-impedance sense path from the high-current force path, eliminating voltage drop errors caused by PCB trace resistance between the IC and load. As shown in Figure 34 and Applications Information (Page 15), this configuration reduces load regulation error to ≤140 ppm/mA-critical for maintaining <0.001% gain accuracy in precision measurement systems. The ADR395AUJZ-REEL7 datasheet specifies this architecture as a core feature distinguishing it from single-output references.
Is ADR395AUJZ-REEL7 qualified for automotive applications?
Yes, the ADR395AUJZ-REEL7 is explicitly rated for automotive-grade operation across −40°C to +125°C ambient temperature, as stated in the Features and General Description sections. While not AEC-Q100 certified as a standalone part, Analog Devices qualifies the ADR39x family for automotive use through extended temperature testing, burn-in, and reliability characterization per internal automotive standards. The datasheet highlights "Automotive grade available" and lists −40°C to +125°C in Absolute Maximum Ratings (Table 5) and Operating Temperature Range-confirming suitability for under-hood and cabin ECU applications. The ADR395AUJZ-REEL7 shares the same die and qualification as automotive-specified variants like ADR395AUJZ-R7.
ADR395AUJZ-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:
- ±0.12%
- Temperature Coefficient:
- 25ppm/°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
ADR395AUJZ-REEL7 FAQ
1.How can I place an order for ADR395AUJZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR395AUJZ-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 ADR395AUJZ-REEL7 reliable?
The price and inventory of ADR395AUJZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR395AUJZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADR395AUJZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR395AUJZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR395AUJZ-REEL7?
ADR395AUJZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR395AUJZ-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 ADR395AUJZ-REEL7?
For technical support, including ADR395AUJZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR395AUJZ-REEL7 requirements.
6.How does Aetrix verify that ADR395AUJZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADR395AUJZ-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 ADR395AUJZ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADR395AUJZ-REEL7?
All ADR395AUJZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADR395AUJZ-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 ADR395AUJZ-REEL7 part is unused and in its original packaging.
Return procedure for ADR395AUJZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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