My Inquiry
My Account
Analog Devices Inc. ADR366BUJZ-R2
- Part No.:
- ADR366BUJZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADR366BUJZ-R2.pdf
- Description:
- IC VREF SERIES 0.13% TSOT5
- Quantity:
- Payment:
- Shipping:
Inventory:3,945
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADR366BUJZ-R2 from Analog Devices is a precision 3.300 V band gap voltage reference IC with sink/source capability, 9 ppm/°C temperature coefficient (B grade), ±4 mV initial accuracy, and ultralow 9.3 µVp-p (0.1 Hz to 10 Hz) output noise-designed for high-accuracy ADC/DAC biasing in battery-powered data acquisition systems.
For engineers reviewing the ADR366BUJZ-R2 datasheet, ADR366BUJZ-R2 pinout, ADR366BUJZ-R2 application, or ADR366BUJZ-R2 equivalent, key selection criteria include its 300 mV dropout, 190 µA max quiescent current, 5 mA sourcing / −1 mA sinking capability, and TSOT-5 package compatibility with space-constrained portable medical and industrial sensor interfaces.
Technical Context
The ADR366BUJZ-R2 implements a curvature-corrected band gap architecture where the reference is referenced to VOUT-not ground-enabling inherent ground-noise rejection. Its proprietary laser-trimmed resistor network minimizes temperature-induced curvature error across −40°C to +125°C.
It operates as a micropower, low-dropout shunt-like series reference: stable output requires only VIN ≥ VOUT + 300 mV, eliminates need for external capacitors, and maintains regulation under load currents from −1 mA (sink) to +5 mA (source) without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.300 V nominal, with B-grade tolerance of ±4 mV (±0.125%) at 25°C-enables direct interface with 12-bit+ SAR ADCs requiring tight reference stability. |
| Tempco | 9 ppm/°C (B grade, −40°C to +125°C)-ensures ≤ ±1.1 mV drift over full industrial temperature range, critical for uncalibrated field instrumentation. |
| Noise (0.1–10 Hz) | 9.3 µVp-p-low enough to avoid degrading ENOB in 16-bit delta-sigma ADCs used in precision weigh scales and portable ECG front-ends. |
| Dropout Voltage | 300 mV-allows operation from single-cell Li-ion (3.0 V min) or 3.3 V LDO rails with margin, supporting ultra-low-power wake-up circuits. |
| Quiescent Current | 190 µA maximum-enables multi-year battery life in wireless sensor nodes with duty-cycled measurement cycles. |
| Output Current | +5 mA sourcing / −1 mA sinking-supports driving 10 kΩ ADC input impedance plus 100 pF sampling capacitance without external buffer. |
| Long-Term Stability | 50 ppm (1000 hours)-predictable aging behavior simplifies calibration interval planning in metrology-grade equipment. |
Pinout & Package
ADR366BUJZ-R2 is housed in a 5-lead TSOT (UJ-5) package, 2.1 mm × 1.6 mm × 0.55 mm, with exposed pad for thermal enhancement. Pin 1 is NC (not internally connected); pins are arranged in standard TSOT top-view orientation with GND at Pin 2, VIN at Pin 3, VOUT at Pin 4, and TRIM at Pin 5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NIC) | Not Internally Connected | No internal bond wire; must be left floating or tied to GND per layout best practice-no electrical function or signal path. |
| 2 (GND) | Ground Reference | Primary return path for internal band gap core and output stage; requires low-impedance PCB connection to minimize noise coupling into VOUT. |
| 3 (VIN) | Input Supply | Accepts 3.6 V to 15 V; minimum headroom 300 mV above VOUT ensures regulation-no input capacitor required due to internal stability design. |
| 4 (VOUT) | Precision Output | Delivers regulated 3.300 V; connects directly to ADC REF+ or DAC VREF pins; output impedance < 1 Ω below 1 kHz enables fast settling after load transients. |
| 5 (TRIM) | Voltage Trim Terminal | Allows fine adjustment of output via external resistor divider (e.g., 100 kΩ potentiometer between VOUT and GND); typical trim range ±0.5%. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow 0.1–10 Hz noise | 9.3 µVp-p-reduces integrated noise floor in DC-coupled sensor signal chains, preserving dynamic range in low-frequency biosignal monitoring. |
| No external capacitor required | Internally compensated for stability with any capacitive load up to 10 nF-eliminates board area, BOM cost, and layout sensitivity to parasitic inductance. |
| Sink/source capability | −1 mA sink / +5 mA source-enables direct driving of reference buffers, op-amp bias networks, or small logic loads without external transistors. |
| Low dropout (300 mV) | Enables use with 3.3 V supply rails while maintaining regulation down to 3.0 V input-critical for brown-out resilience in portable devices. |
| Wide operating temperature | −40°C to +125°C (B grade)-qualified for under-hood automotive sensors and industrial PLC I/O modules without derating. |
Applications
| Portable Medical Instrumentation | Battery-Powered Data Acquisition |
|---|---|
Use Scenario: Portable ECG monitor with 16-bit delta-sigma ADC sampling at 1 kSPS, powered by coin cell. IC Role / Device Role / Timing Role: Precision 3.3 V reference for ADC VREF input, providing stable scale factor independent of battery voltage decay. Use Value: 9.3 µVp-p noise and 9 ppm/°C tempco ensure <0.01% gain error drift over temperature and battery discharge, meeting IEC 60601-2-27 clinical accuracy requirements. |
Use Scenario: Handheld multimeter with auto-ranging 24-bit sigma-delta ADC and isolated serial interface. IC Role / Device Role / Timing Role: Primary voltage reference for dual-slope and sigma-delta conversion stages, referenced to system ground. Use Value: 300 mV dropout allows operation from 3.6 V Li-ion cell down to 3.3 V, extending usable battery life by >15% versus higher-dropout references. |
| Industrial Process Control Sensors | Automotive Cabin Environment Monitoring |
Use Scenario: 4–20 mA loop-powered pressure transmitter with HART digital overlay, mounted in factory ambient. IC Role / Device Role / Timing Role: Stable excitation reference for bridge sensor and ADC reference, sharing same ground plane as analog front-end. Use Value: Ground-referenced band gap topology attenuates common-mode noise on shared 4–20 mA return line, improving SNR by >20 dB versus ground-referenced alternatives. |
Use Scenario: In-cabin CO₂ and humidity sensor module in HVAC control unit, operating across −40°C to +125°C ambient. IC Role / Device Role / Timing Role: Precision reference for thermistor and NDIR sensor signal conditioning ASIC, qualified to AEC-Q100 Grade 1. Use Value: B-grade 9 ppm/°C tempco and 125°C operation ensure <±2 LSB error in 12-bit ADC readings over full automotive temperature range without software compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3433ARJZ-R7 | Same 3.3 V output, but 3 ppm/°C tempco (A grade), 6 µVp-p noise, 250 µA IQ, and SOT-23-5 package-higher precision, higher power. | Preferred for metrology-grade calibrators or lab equipment where long-term stability (<10 ppm/1000 hrs) and sub-ppm tempco are mandatory. | Select ADR3433ARJZ-R7 when absolute accuracy outweighs battery life; ADR366BUJZ-R2 remains optimal for portable, power-constrained designs. |
| REF3333AIDBVR | 3.3 V output, 10 ppm/°C tempco, 12 µVp-p noise, 180 µA IQ, SOT-23-5-TI's pin-compatible alternative with slightly higher noise and looser initial accuracy (±10 mV). | Suitable for cost-sensitive industrial controls where ±10 mV initial error is acceptable and ripple rejection (−65 dB vs. −70 dB) is sufficient. | Choose REF3333AIDBVR for second-source flexibility in high-volume manufacturing; ADR366BUJZ-R2 delivers superior noise and accuracy for premium-tier instruments. |
Compared with ADR3433ARJZ-R7, ADR366BUJZ-R2 trades 4 ppm/°C higher tempco and +3.3 µVp-p noise for 40 µA lower quiescent current-making it more suitable for multi-year battery operation. Versus REF3333AIDBVR, it provides tighter initial accuracy and lower noise at modest cost premium, justifying use in medical and test equipment.
Availability
ADR366BUJZ-R2 is available at Aetrix Electronics and suitable for portable medical instrumentation, battery-powered data acquisition systems, and industrial process controls requiring stable component supply with guaranteed long-term availability and traceable lot-level documentation.
Supply support for ADR366BUJZ-R2 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 R&D and manufacturing operations worldwide.
The ADR36x family was designed specifically for precision, low-power, space-constrained applications-including portable instrumentation and automotive sensing-where traditional references fail due to noise, dropout, or thermal drift limitations.
FAQ
What is the operating temperature range for the ADR366BUJZ-R2?
The ADR366BUJZ-R2 is rated for −40°C to +125°C operation (B grade). This range is validated per the ADR366 electrical characteristics table and supports use in industrial environments and under-hood automotive locations where ambient extremes occur. The device maintains specified accuracy and noise performance across this full range without derating.
Does the ADR366BUJZ-R2 require an external output capacitor?
No, the ADR366BUJZ-R2 does not require an external output capacitor for stability. Its internal compensation ensures unconditional stability with capacitive loads up to 10 nF, as confirmed in the Applications Information section of the Rev. E datasheet. Adding a capacitor may improve transient response but is not necessary for basic regulation.
Can the TRIM pin of the ADR366BUJZ-R2 be left unconnected?
Yes, the TRIM pin (Pin 5) of the ADR366BUJZ-R2 can be left unconnected with no impact on baseline operation. It is provided for optional fine-tuning of VOUT using an external resistor network; open-circuit default yields nominal 3.300 V output within B-grade accuracy limits (±4 mV).
What is the maximum load current the ADR366BUJZ-R2 can source and sink?
The ADR366BUJZ-R2 can continuously source up to +5 mA and sink up to −1 mA while maintaining regulation and specified accuracy. These values are confirmed in Table 7 (ADR366 Electrical Characteristics) and apply across −40°C to +125°C. Exceeding these limits risks output droop or thermal shutdown.
Is the ADR366BUJZ-R2 qualified for automotive applications?
The ADR366BUJZ-R2 itself is not automotive-qualified; only the ADR365WHUJZ-R7 and ADR365WAUJZ-R7 variants are explicitly listed in the Ordering Guide as qualified for automotive use (−40°C to +150°C, AEC-Q100). ADR366BUJZ-R2 is rated for industrial temperature range only.
ADR366BUJZ-R2 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:
- Discontinued at Digi-Key
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±0.13%
- Temperature Coefficient:
- 9ppm/°C
- Noise - 0.1Hz to 10Hz:
- 9.3µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 3.6V ~ 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
ADR366BUJZ-R2 FAQ
1.How can I place an order for ADR366BUJZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR366BUJZ-R2 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 ADR366BUJZ-R2 reliable?
The price and inventory of ADR366BUJZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR366BUJZ-R2 is usually 5 days.
3.What payment methods are accepted for ADR366BUJZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR366BUJZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR366BUJZ-R2?
ADR366BUJZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR366BUJZ-R2 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 ADR366BUJZ-R2?
For technical support, including ADR366BUJZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR366BUJZ-R2 requirements.
6.How does Aetrix verify that ADR366BUJZ-R2 is sourced from the original manufacturer or authorized distributors?
All ADR366BUJZ-R2 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 ADR366BUJZ-R2 meets industry standards.
7.What is the process for return or replacement of ADR366BUJZ-R2?
All ADR366BUJZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADR366BUJZ-R2, 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 ADR366BUJZ-R2 part is unused and in its original packaging.
Return procedure for ADR366BUJZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADR366BUJZ-R2 Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
