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Analog Devices Inc. ADR361BUJZ-REEL7
- Part No.:
- ADR361BUJZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADR361BUJZ-REEL7.pdf
- Description:
- IC VREF SERIES 0.12% TSOT5
- Quantity:
- Payment:
- Shipping:
Inventory:3,314
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Product details
Overview
ADR361BUJZ-REEL7 from Analog Devices is a precision 2.500 V band gap voltage reference IC with sink/source capability, ±3 mV initial accuracy (B grade), 9 ppm/°C temperature coefficient, and ultralow 8.25 µVp-p (0.1 Hz to 10 Hz) output noise - designed for high-stability analog signal chains in battery-powered data acquisition systems.
For engineers reviewing the ADR361BUJZ-REEL7 datasheet, ADR361BUJZ-REEL7 pinout, ADR361BUJZ-REEL7 application, or ADR361BUJZ-REEL7 equivalent, this device delivers low dropout (300 mV), no external capacitor requirement, −40°C to +125°C operation, and sourcing/sinking current capability critical for portable medical instruments and industrial process controls.
Technical Context
The ADR361BUJZ-REEL7 uses proprietary curvature-corrected band gap architecture where the reference is referenced to VOUT-not ground-enabling inherent ground-noise rejection. Its PTAT and CTAT voltage synthesis is laser-trimmed for stability across temperature.
It operates as a micropower, low-dropout shunt-like series reference: requires only 300 mV headroom above VOUT (i.e., VIN ≥ 2.8 V), draws ≤190 µA quiescent current, and supports bidirectional load current (±1 mA sinking, +5 mA sourcing) without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V nominal, with ±3 mV (±0.12%) initial accuracy at 25°C - enables direct interface with 12-bit ADCs without calibration. |
| Tempco | 9 ppm/°C over −40°C to +125°C - ensures <±0.75 mV drift across full industrial range. |
| Noise (0.1–10 Hz) | 8.25 µVp-p - minimizes quantization uncertainty in precision weigh scales and sensor front-ends. |
| Dropout Voltage | 300 mV - allows operation from single-cell Li-ion (3.0 V min) or dual alkaline (3.0 V) supplies. |
| Quiescent Current | 150–190 µA - supports >1-year battery life in always-on portable instrumentation. |
| Output Current | +5 mA sourcing / −1 mA sinking - drives ADC reference inputs, op-amp bias networks, and small DAC loads directly. |
| Long-Term Stability | 50 ppm (1000 hrs) - reduces recalibration frequency in field-deployed test equipment. |
Pinout & Package
ADR361BUJZ-REEL7 is housed in a 5-lead TSOT (UJ-5) package - compact, surface-mount, lead-free, and RoHS-compliant with θJA = 230°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NIC) | Not Internally Connected | No internal bond wire; must be left floating or grounded per PCB layout best practice - no electrical function. |
| 2 (GND) | Reference Ground | Primary return path for internal band gap core and output stage; requires low-impedance connection to system AGND. |
| 3 (VIN) | Input Supply | Accepts 2.8 V to 15 V input; minimum 300 mV headroom above VOUT required for regulation. |
| 4 (VOUT) | Stable Reference Output | Delivers 2.500 V ±3 mV; capable of sourcing up to 5 mA or sinking up to 1 mA into load. |
| 5 (TRIM) | Voltage Trim Terminal | Allows fine adjustment of output via external resistor divider; default operation requires open or grounded connection. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow 0.1–10 Hz noise | 8.25 µVp-p - preserves SNR in high-resolution delta-sigma ADC applications. |
| No external capacitor needed | Stable with zero output capacitance - eliminates BOM cost, board space, and startup delay from COUT. |
| Bidirectional output current | Sinks −1 mA and sources +5 mA - supports active biasing and dynamic load switching without external buffers. |
| Laser-trimmed temperature drift | 9 ppm/°C (B grade) - achieves high accuracy over wide temperature without software compensation. |
| Low-power micropower operation | 190 µA max IIN - extends runtime in coin-cell or energy-harvesting systems. |
Applications
| Battery-Powered Data Loggers | Portable ECG Monitors |
|---|---|
|
Use Scenario: Continuous 24-bit sensor data recording on AA batteries with 10-year shelf life. IC Role / Device Role / Timing Role: Primary voltage reference for SAR and delta-sigma ADCs, providing stable 2.500 V reference with minimal self-heating. Use Value: 9 ppm/°C tempco and 8.25 µVp-p noise ensure <±0.005% measurement error across operating temperature and battery discharge cycle. |
Use Scenario: Low-power wearable ECG front-end with integrated analog filtering and 12-bit digitization. IC Role / Device Role / Timing Role: Precision reference for instrumentation amplifier gain-setting and ADC conversion, rejecting ground bounce from digital subsystems. Use Value: VOUT-referenced band gap topology attenuates PCB ground noise by >40 dB, improving common-mode rejection in biopotential measurements. |
| Industrial Loop-Powered Transmitters | Automotive Cabin Air Quality Sensors |
|
Use Scenario: 4–20 mA transmitter powered from 12–36 V loop supply with onboard microcontroller and analog sensor interface. IC Role / Device Role / Timing Role: Stable 2.500 V reference for sensor excitation and ADC reference, operating with 300 mV dropout under varying loop voltage. Use Value: 300 mV dropout and 190 µA quiescent current enable reliable regulation even at 12.3 V loop voltage while minimizing power dissipation in confined enclosures. |
Use Scenario: NDIR CO₂ sensor module in automotive HVAC control, requiring operation from 5–16 V vehicle battery with −40°C to +125°C ambient range. IC Role / Device Role / Timing Role: High-accuracy reference for thermopile signal conditioning and ADC, qualified for automotive-grade reliability. Use Value: B-grade specification (±3 mV, 9 ppm/°C) and −40°C to +125°C rating meet AEC-Q100 stress requirements for cabin electronics without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF3325AIDBVR | 2.5 V, ±0.2% initial accuracy (±5 mV), 10 ppm/°C, 5.5 µVp-p noise, 180 µA IQ, SOT-23-3 | Lower noise but looser initial accuracy; 3-pin package lacks TRIM and NIC pins - no output adjustment capability. | Select when absolute lowest noise is prioritized over trim flexibility and tighter initial tolerance. |
| ADR3425BRMZ | 2.5 V, ±0.1% (±2.5 mV), 3 ppm/°C, 9 µVp-p, 120 µA IQ, MSOP-8 | Superior tempco and accuracy, but larger MSOP-8 package, higher cost, and requires 1 µF output capacitor for stability. | Select when highest long-term stability and temperature performance justify added board area and design complexity. |
Compared with REF3325AIDBVR and ADR3425BRMZ, the ADR361BUJZ-REEL7 uniquely balances B-grade precision (±3 mV), ultra-low noise (8.25 µVp-p), no-capacitor operation, and trim capability in the smallest 5-lead TSOT footprint - making it optimal for space-constrained, battery-sensitive designs where moderate accuracy suffices.
Availability
ADR361BUJZ-REEL7 is available at Aetrix Electronics and suitable for battery-powered instruments, portable medical instruments, and industrial process controls requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for ADR361BUJZ-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 ADR36x family was engineered for precision, low-power, capacitor-free voltage referencing in portable and harsh-environment applications - emphasizing micropower operation, low noise, and wide temperature range without sacrificing accuracy.
FAQ
What is the operating temperature range for ADR361BUJZ-REEL7?
The ADR361BUJZ-REEL7 is rated for −40°C to +125°C operation, consistent with its B-grade specification. This range covers industrial and extended-temperature automotive cabin applications. It does not support the H-grade's +150°C maximum, which applies only to ADR365WHUJZ-R7 and select variants.
Does ADR361BUJZ-REEL7 require an output capacitor for stability?
No, the ADR361BUJZ-REEL7 is internally compensated and remains stable with zero output capacitance - a key differentiator from many competing references. This eliminates BOM cost, PCB area, and potential phase-margin issues associated with capacitive loading.
Can ADR361BUJZ-REEL7 sink current, and how much?
Yes, the ADR361BUJZ-REEL7 can actively sink up to −1 mA while maintaining regulation. This capability supports dynamic bias networks, active pull-down circuits, and certain DAC reference configurations where current flows out of the VOUT pin.
What is the purpose of the TRIM pin on ADR361BUJZ-REEL7?
The TRIM pin (Pin 5) allows fine adjustment of the output voltage using an external resistor network. In standard operation, it is left open or grounded. When trimmed, it enables precise calibration to compensate for system-level gain errors - a feature absent in 3-pin alternatives like REF3325AIDBVR.
Is ADR361BUJZ-REEL7 qualified for automotive applications?
The ADR361BUJZ-REEL7 itself is not automotive-qualified; only specific variants (e.g., ADR365WHUJZ-R7) carry AEC-Q100 qualification for −40°C to +150°C. However, its −40°C to +125°C rating and robust construction make it suitable for non-safety-critical automotive cabin modules where full qualification is not mandated.
ADR361BUJZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.12%
- Temperature Coefficient:
- 9ppm/°C
- Noise - 0.1Hz to 10Hz:
- 8.25µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 2.8V ~ 15V
- Current - Supply:
- 190µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
ADR361BUJZ-REEL7 FAQ
1.How can I place an order for ADR361BUJZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR361BUJZ-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 ADR361BUJZ-REEL7 reliable?
The price and inventory of ADR361BUJZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR361BUJZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADR361BUJZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR361BUJZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR361BUJZ-REEL7?
ADR361BUJZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR361BUJZ-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 ADR361BUJZ-REEL7?
For technical support, including ADR361BUJZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR361BUJZ-REEL7 requirements.
6.How does Aetrix verify that ADR361BUJZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADR361BUJZ-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 ADR361BUJZ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADR361BUJZ-REEL7?
All ADR361BUJZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADR361BUJZ-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 ADR361BUJZ-REEL7 part is unused and in its original packaging.
Return procedure for ADR361BUJZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADR361BUJZ-REEL7 Tags
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