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Analog Devices Inc. ADR3425ARJZ-R2
- Part No.:
- ADR3425ARJZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
ADR3425ARJZ-R2.pdf
- Description:
- IC VREF SERIES 0.1% SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:11,912
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Product details
Overview
ADR3425ARJZ-R2 from Analog Devices is a micropower, high-accuracy CMOS voltage reference delivering 2.500 V output with ±0.1% initial accuracy, 8 ppm/°C max temperature coefficient, and 100 μA max quiescent current in a 6-lead SOT-23 package. It serves as a precision excitation or calibration source in 16-bit ADCs, industrial sensor front-ends, and portable medical instrumentation.
For engineers reviewing the ADR3425ARJZ-R2 datasheet, ADR3425ARJZ-R2 pinout, ADR3425ARJZ-R2 application, or ADR3425ARJZ-R2 equivalent, key selection criteria include its 2.5 V nominal output, 2.7 V to 5.5 V input range, 250 mV dropout at 2 mA, 4-wire force-sense architecture, and −40°C to +125°C operation for high-reliability embedded systems.
Technical Context
The ADR3425ARJZ-R2 uses Analog Devices' DigiTrim® technology for digital post-assembly trimming of output voltage and temperature coefficient, achieving ±0.1% initial accuracy and low hysteresis (70 ppm). Its 4-wire Kelvin configuration separates force and sense paths for GND and VOUT to eliminate PCB trace resistance errors.
It features an enable pin supporting shutdown mode (5 μA IQ), low-noise design (<18 μV p-p, 0.1 Hz–10 Hz), and robust line/load regulation (120 ppm/V and 30 ppm/mA over temperature). The device maintains stability with input/output capacitors as low as 0.1 μF and supports sourcing up to +10 mA and sinking down to −3 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V ±2.5 mV - precise reference for 2.5 V rail-dependent converters and sensors. |
| Initial Accuracy | ±0.1% - enables single-point calibration in high-resolution data acquisition without trimming. |
| Temp Coefficient | ≤8 ppm/°C - ensures <±25 ppm drift over −40°C to +125°C, critical for unheated industrial environments. |
| Quiescent Current | ≤100 μA - supports multi-year battery life in portable gas analyzers and handheld meters. |
| Dropout Voltage | 250 mV at 2 mA - allows operation from 2.7 V supply, compatible with Li-ion and 3.3 V LDO outputs. |
| Output Noise | <18 μV p-p (0.1–10 Hz) - preserves SNR in 16-bit+ SAR and delta-sigma ADC applications. |
| Enable Function | Active-high EN pin with 0.7 V shutdown threshold - enables power cycling in low-duty-cycle IoT nodes. |
Pinout & Package
ADR3425ARJZ-R2 is housed in a RoHS-compliant, lead-free 6-lead SOT-23 (RJ-6) package with standard JEDEC MO-178AC footprint (2.2 mm × 1.35 mm × 1.0 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND FORCE | Ground return path for internal regulator | Connects to local ground plane; carries load current return but not sensing. |
| 2 - GND SENSE | Ground reference sense node | Must connect directly to lowest-potential point (e.g., ADC AGND) to reject ground bounce. |
| 3 - ENABLE | Digital control input | High ≥VIN × 0.85 enables output; low ≤0.7 V disables output and reduces IQ to 5 μA. |
| 4 - VIN | Unregulated input supply | Accepts 2.7–5.5 V; requires ≥250 mV headroom above VOUT for full accuracy. |
| 5 - VOUT SENSE | Output voltage feedback sense | Connects directly to load's reference input (e.g., ADC REF+) to compensate for trace IR drop. |
| 6 - VOUT FORCE | Reference voltage output driver | Delivers regulated 2.5 V; must be routed separately from VOUT SENSE to preserve Kelvin integrity. |
Key Features
| Feature | Design Value |
|---|---|
| 4-wire force-sense topology | Eliminates errors from PCB trace resistance and current-induced voltage drops in precision measurement paths. |
| DigiTrim® digital trimming | Enables ±0.1% initial accuracy without laser trimming, improving production yield and long-term stability. |
| Low 1/f noise <18 μV p-p | Maintains effective resolution in low-frequency sensor signal chains (e.g., strain gauges, thermistors). |
| −40°C to +125°C operation | Validated performance across automotive under-hood and industrial control cabinet temperatures. |
| 1000-hour long-term drift ≤30 ppm | Reduces recalibration frequency in field-deployed instrumentation and medical diagnostic equipment. |
Applications
| Industrial Sensor Signal Conditioning | Precision Data Acquisition Systems |
|---|---|
Use Scenario: Amplifying and digitizing low-level signals from RTDs, load cells, or pressure transducers in PLC analog input modules. IC Role / Device Role / Timing Role: Provides stable 2.5 V reference for 24-bit delta-sigma ADCs and programmable gain instrumentation amplifiers. Use Value: Enables ≤0.005% total unadjusted error (TUE) over temperature by minimizing reference drift and noise contributions. | Use Scenario: High-channel-count DAQ systems used in power quality monitoring and structural health testing. IC Role / Device Role / Timing Role: Supplies synchronized reference voltage to multiple simultaneous-sampling ADCs on a single PCB. Use Value: Force-sense architecture ensures identical reference potential across all channels, eliminating inter-channel gain mismatch. |
| Portable Medical Instrumentation | Battery-Powered Test & Measurement |
Use Scenario: Handheld blood glucose meters and portable ECG recorders operating from coin-cell or Li-ion batteries. IC Role / Device Role / Timing Role: Precision excitation source for biosensor interfaces and reference for low-power SAR ADCs. Use Value: 100 μA quiescent current extends battery life beyond 2 years in intermittent-use devices. | Use Scenario: Field-deployable multimeters and insulation resistance testers requiring lab-grade accuracy. IC Role / Device Role / Timing Role: Calibration reference during self-test and zeroing routines, and main reference during measurement cycles. Use Value: ±0.1% initial accuracy and 70 ppm hysteresis ensure repeatability after thermal cycling and mechanical shock. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3425ARMZ | Same electrical specs; 8-lead MSOP package with exposed pad, higher θJA (190°C/W vs. 230°C/W), no enable pin. | Lacks shutdown capability; suited for space-constrained but non-power-cycled designs. | Select ADR3425ARMZ only if board layout accommodates MSOP and enable functionality is unnecessary. |
| REF3425IDBVR | Texas Instruments part; same 2.5 V output, ±0.1% accuracy, but 12 ppm/°C max TCVOUT and 135 μA max IQ. | Higher drift and current reduce suitability for extended-temperature or ultra-low-power use cases. | Choose REF3425IDBVR only when cost sensitivity outweighs performance requirements in commercial-grade applications. |
Compared with ADR3425ARMZ and REF3425IDBVR, the ADR3425ARJZ-R2 uniquely combines 6-lead SOT-23 compactness, enable-controlled shutdown, and best-in-class 8 ppm/°C tempco-making it optimal for battery-powered, high-accuracy, and thermally demanding applications.
Availability
ADR3425ARJZ-R2 is available at Aetrix Electronics and suitable for precision data acquisition systems, industrial instrumentation, and portable medical devices requiring stable component supply, guaranteed long-term availability, and full traceability.
Supply support for ADR3425ARJZ-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.
The ADR34xx family was designed specifically for micropower, high-accuracy voltage referencing in space- and energy-constrained industrial, medical, and instrumentation systems where stability, low noise, and wide temperature operation are mandatory.
FAQ
What is the minimum input voltage required for ADR3425ARJZ-R2 to maintain full accuracy?
The ADR3425ARJZ-R2 requires a minimum input voltage of 2.7 V to guarantee ±0.1% output accuracy across temperature. At 2 mA load, the dropout voltage is ≤250 mV, meaning VIN must exceed 2.75 V to sustain full specification compliance. Operation below 2.7 V may result in reduced accuracy or regulation loss.
Does ADR3425ARJZ-R2 support 4-wire (Kelvin) connections, and why does it matter?
Yes, ADR3425ARJZ-R2 implements true 4-wire force-sense architecture with separate GND FORCE/GND SENSE and VOUT FORCE/VOUT SENSE pins. This eliminates voltage errors caused by PCB trace resistance and load current flow, enabling sub-0.01% system-level accuracy in high-precision ADC and DAC reference paths.
How does the enable pin function on ADR3425ARJZ-R2, and what is its leakage current?
The ENABLE pin on ADR3425ARJZ-R2 is active-high: driving it ≥VIN × 0.85 enables the reference output, while ≤0.7 V places the device in shutdown mode (IQ ≤5 μA). ENABLE pin leakage is ≤3 μA over −40°C to +125°C, ensuring minimal impact on external pull-up networks in battery-powered systems.
What is the long-term stability specification for ADR3425ARJZ-R2, and how is it measured?
ADR3425ARJZ-R2 exhibits ≤30 ppm output voltage drift after 1000 hours of operation at +50°C. This value reflects typical aging behavior under accelerated stress conditions and supports predictable calibration intervals in field-deployed instrumentation where recalibration every 2–3 years is acceptable.
Can ADR3425ARJZ-R2 drive a 10 kΩ load directly, and what is its sourcing/sinking capability?
Yes, ADR3425ARJZ-R2 can directly drive a 10 kΩ load at 2.5 V (250 μA), well within its +10 mA sourcing and −3 mA sinking capability. Load regulation remains ≤30 ppm/mA over temperature, ensuring <±0.075 mV shift even at full 10 mA output-sufficient for driving ADC references, op-amp bias networks, and DAC references.
ADR3425ARJZ-R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- SOT-23-6
- 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:
- 10 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 8ppm/°C
- Noise - 0.1Hz to 10Hz:
- 18µVp-p
- Noise - 10Hz to 10kHz:
- 42µVrms
- Voltage - Input:
- 2.7V ~ 5.5V
- Current - Supply:
- 100µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
ADR3425ARJZ-R2 FAQ
1.How can I place an order for ADR3425ARJZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR3425ARJZ-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 ADR3425ARJZ-R2 reliable?
The price and inventory of ADR3425ARJZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR3425ARJZ-R2 is usually 5 days.
3.What payment methods are accepted for ADR3425ARJZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR3425ARJZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR3425ARJZ-R2?
ADR3425ARJZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR3425ARJZ-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 ADR3425ARJZ-R2?
For technical support, including ADR3425ARJZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR3425ARJZ-R2 requirements.
6.How does Aetrix verify that ADR3425ARJZ-R2 is sourced from the original manufacturer or authorized distributors?
All ADR3425ARJZ-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 ADR3425ARJZ-R2 meets industry standards.
7.What is the process for return or replacement of ADR3425ARJZ-R2?
All ADR3425ARJZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADR3425ARJZ-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 ADR3425ARJZ-R2 part is unused and in its original packaging.
Return procedure for ADR3425ARJZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADR3425ARJZ-R2 Tags
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