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Analog Devices Inc. ADR361AUJZ-REEL7
- Part No.:
- ADR361AUJZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
ADR361AUJZ-REEL7.pdf
- Description:
- IC VREF SERIES 0.24% TSOT5
- Quantity:
- Payment:
- Shipping:
Inventory:2,037
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Product details
Overview
ADR361AUJZ-REEL7 from Analog Devices is a precision 2.500 V band gap voltage reference IC with sink/source capability, 25 ppm/°C temperature coefficient (A grade), ±6 mV initial accuracy, and ultralow 8.25 µVp-p (0.1 Hz to 10 Hz) output noise - designed for high-stability analog signal chains in portable medical instruments and battery-powered data acquisition systems.
For engineers reviewing the ADR361AUJZ-REEL7 datasheet, ADR361AUJZ-REEL7 pinout, ADR361AUJZ-REEL7 application, or ADR361AUJZ-REEL7 equivalent, key selection criteria include guaranteed −40°C to +125°C operation, 300 mV dropout, 190 µA max quiescent current, and no external capacitor requirement - critical for space-constrained, low-power precision designs.
Technical Context
The ADR361AUJZ-REEL7 implements a proprietary curvature-corrected band gap architecture where the reference is referenced to VOUT rather than GND, providing inherent ground-noise rejection. Its internal trimming and laser-adjusted resistor network achieve stable 2.500 V output across temperature without external components.
It operates as a micropower, low-dropout voltage reference requiring only VIN ≥ VOUT + 300 mV. The device delivers ±1 mA sinking and +5 mA sourcing capability while maintaining 25 ppm/°C drift over −40°C to +125°C - meeting A-grade specifications per Table 3 of Rev. E datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V nominal, with min/max of 2.494 V / 2.506 V at 25°C - ensures precise ADC/DAC biasing and sensor excitation within 0.24% tolerance. |
| Initial Accuracy | ±6 mV maximum (A grade) - enables single-point calibration in 12-bit to 14-bit measurement systems without trimming. |
| Temp Coefficient | 25 ppm/°C over −40°C to +125°C - guarantees ≤ ±312.5 µV drift across full industrial temperature range. |
| Output Noise | 8.25 µVp-p (0.1 Hz to 10 Hz) - supports high-resolution delta-sigma ADCs requiring sub-16-bit noise floors. |
| Dropout Voltage | 300 mV - allows operation from 2.8 V supply, ideal for single-cell Li-ion or dual-cell alkaline systems. |
| Quiescent Current | 190 µA maximum - extends battery life in always-on portable instrumentation with multi-year runtime. |
| Supply Range | 2.8 V to 15 V - accommodates wide input rails while maintaining regulation down to minimal headroom. |
Pinout & Package
ADR361AUJZ-REEL7 is housed in a 5-lead TSOT (UJ-5) package with exposed pad for thermal performance. Pin 1 is NIC (Not Internally Connected); pin 2 is GND; pin 3 is VIN; pin 4 is VOUT; pin 5 is TRIM - enabling optional fine-tuning of output voltage via external resistor divider.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NIC) | Not Internally Connected | No internal connection; must be left floating or tied to GND per layout best practice - no functional impact on regulation. |
| 2 (GND) | Ground Reference | Primary return path for reference core and load current; requires low-impedance PCB plane for noise immunity. |
| 3 (VIN) | Input Supply | Accepts 2.8 V to 15 V; minimum 300 mV above VOUT required for regulation - defines lowest usable supply rail. |
| 4 (VOUT) | Stable Output | Delivers 2.500 V ±6 mV; capable of sourcing 5 mA or sinking 1 mA - directly drives ADC references, op-amp bias, or sensor bridges. |
| 5 (TRIM) | Output Adjustment | Allows ±0.5% output tuning via external resistor to GND or VOUT - used for system-level calibration without changing BOM. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow 0.1 Hz–10 Hz noise | 8.25 µVp-p - preserves dynamic range in precision weigh scales and EEG front-ends where low-frequency drift dominates error budget. |
| No external capacitor required | Stable operation with zero output capacitance - eliminates board area, cost, and reliability risk of ceramic capacitors in wearables and implantables. |
| Sink/source capability | ±1 mA sinking / +5 mA sourcing - enables direct interface to transducer bridges, current-sense amplifiers, and programmable gain stages without buffer op-amps. |
| Automotive-qualified variants available | H-grade option supports −40°C to +150°C - confirms robustness for under-hood sensor modules despite ADR361AUJZ-REEL7 being industrial-grade. |
| Laser-trimmed band gap core | 25 ppm/°C drift with 50 ppm long-term stability (1000 hrs) - ensures calibration retention in field-deployed environmental monitors and smart meters. |
Applications
| Portable Medical Instruments | Battery-Powered Instruments |
|---|---|
|
Use Scenario: Powering analog front-end of handheld ECG or pulse oximeter with single-cell Li-ion supply. IC Role / Device Role / Timing Role: Precision 2.500 V reference for 16-bit SAR ADC and instrumentation amplifier biasing. Use Value: 8.25 µVp-p noise and 25 ppm/°C drift ensure <1 LSB error across body temperature range and multi-year shelf life. |
Use Scenario: Calibration reference in handheld multimeter with auto-ranging and autoranging ohmmeter function. IC Role / Device Role / Timing Role: Stable excitation source for precision resistor measurement and DMM reference ladder. Use Value: ±6 mV initial accuracy and no external capacitor reduce BOM count and enable compact 3×5 cm PCB layout. |
| Data Acquisition Systems | Industrial Process Controls |
|
Use Scenario: Modular DAQ module for 4–20 mA loop-powered sensors in factory automation. IC Role / Device Role / Timing Role: Low-dropout 2.500 V reference for isolated sigma-delta ADC and DAC feedback path. Use Value: 300 mV dropout enables operation from 3.3 V isolated rail; 190 µA quiescent current minimizes loop power consumption. |
Use Scenario: Reference for RTD/thermocouple signal conditioning in PLC I/O modules operating at 70°C ambient. IC Role / Device Role / Timing Role: Temperature-stable voltage source for ratiometric measurements and cold-junction compensation. Use Value: Guaranteed 25 ppm/°C drift over −40°C to +125°C ensures <0.1°C measurement uncertainty in harsh cabinet environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3425ARJZ-R7 | Same 2.5 V output, but 3 ppm/°C (B grade), ±1 mV accuracy, higher 350 µA IQ, requires 1 µF output cap. | Better drift and accuracy, but higher power and mandatory capacitor - unsuitable for ultra-low-power or capacitor-free designs. | Select ADR3425ARJZ-R7 only when sub-ppm/°C stability is required and board space permits decoupling cap. |
| REF3325AIDBZR | 2.5 V, 10 ppm/°C (A grade), ±10 mV accuracy, 4.5 µVp-p noise, 180 µA IQ, 125 mV dropout. | Lower dropout and noise, but wider initial tolerance - less suitable for calibrated systems needing tight absolute accuracy. | Choose REF3325AIDBZR for battery voltage monitoring where low dropout outweighs ±10 mV offset sensitivity. |
Compared with ADR361AUJZ-REEL7, ADR3425ARJZ-R7 offers superior temperature stability at the cost of higher quiescent current and mandatory external capacitance, while REF3325AIDBZR provides lower dropout and noise but sacrifices initial accuracy - making ADR361AUJZ-REEL7 optimal for calibrated, capacitor-free, industrial-temperature precision references.
Availability
ADR361AUJZ-REEL7 is available at Aetrix Electronics and suitable for portable medical instruments, battery-powered data loggers, and industrial process controllers requiring stable component supply with guaranteed long-term availability and traceable lot control.
Supply support for ADR361AUJZ-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 ISO 9001-certified manufacturing.
The ADR36x family was engineered specifically for micropower, low-noise, capacitor-free voltage referencing in portable and space-constrained industrial systems - emphasizing thermal stability, sink/source flexibility, and extended temperature operation.
FAQ
What is the operating temperature range for ADR361AUJZ-REEL7?
The ADR361AUJZ-REEL7 is rated for −40°C to +125°C operation per its A-grade specification in the Rev. E datasheet. This range is validated across all electrical parameters including output voltage, temperature coefficient, and load regulation - making it suitable for industrial and extended-temperature embedded applications.
Does ADR361AUJZ-REEL7 require an external output capacitor?
No, ADR361AUJZ-REEL7 is explicitly designed to operate stably without any external output capacitor, as confirmed in the General Description and Applications Information sections of the Rev. E datasheet. This eliminates board space, cost, and reliability concerns associated with ceramic capacitors in portable and medical devices.
Can ADR361AUJZ-REEL7 sink current, and how much?
Yes, ADR361AUJZ-REEL7 can sink up to −1 mA while maintaining regulation, as specified in Table 3 (ADR361 Electrical Characteristics) of the Rev. E datasheet. This sink capability enables direct interfacing with current-output sensors, pull-down logic, or active load circuits without additional discrete components.
What is the typical output voltage noise of ADR361AUJZ-REEL7?
The ADR361AUJZ-REEL7 delivers 8.25 µVp-p output voltage noise over the 0.1 Hz to 10 Hz bandwidth, per Table 3 in the Rev. E datasheet. This ultralow flicker noise supports high-resolution measurement systems such as precision weigh scales and biomedical signal conditioners.
Is ADR361AUJZ-REEL7 pin-compatible with other ADR36x family members?
Yes, all ADR36x devices - including ADR360, ADR361, ADR363, ADR364, ADR365, and ADR366 - share identical 5-lead TSOT (UJ-5) pinout and footprint per Figure 2 and Table 10 of the Rev. E datasheet, enabling drop-in replacement across output voltages from 2.048 V to 5.000 V.
ADR361AUJZ-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:
- ±0.24%
- Temperature Coefficient:
- 25ppm/°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
ADR361AUJZ-REEL7 FAQ
1.How can I place an order for ADR361AUJZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR361AUJZ-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 ADR361AUJZ-REEL7 reliable?
The price and inventory of ADR361AUJZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR361AUJZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADR361AUJZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR361AUJZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR361AUJZ-REEL7?
ADR361AUJZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR361AUJZ-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 ADR361AUJZ-REEL7?
For technical support, including ADR361AUJZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR361AUJZ-REEL7 requirements.
6.How does Aetrix verify that ADR361AUJZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADR361AUJZ-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 ADR361AUJZ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADR361AUJZ-REEL7?
All ADR361AUJZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADR361AUJZ-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 ADR361AUJZ-REEL7 part is unused and in its original packaging.
Return procedure for ADR361AUJZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADR361AUJZ-REEL7 Tags
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