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Analog Devices Inc. ADR3425ARJZ-R7
- Part No.:
- ADR3425ARJZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
ADR3425ARJZ-R7.pdf
- Description:
- IC VREF SERIES 0.1% SOT23-6
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ADR3425ARJZ-R7 from Analog Devices is a micropower, high-accuracy CMOS voltage reference delivering 2.500 V ±0.1% initial accuracy, 8 ppm/°C max temperature coefficient, and 10 mA sourcing capability in a 6-lead SOT-23 package. It operates from −40°C to +125°C with 100 μA max quiescent current and supports precision ADC/DAC biasing in battery-powered instrumentation.
For engineers reviewing the ADR3425ARJZ-R7 datasheet, ADR3425ARJZ-R7 pinout, ADR3425ARJZ-R7 application, or ADR3425ARJZ-R7 equivalent, key selection criteria include output stability under load/temperature variation, low-noise performance (<18 μV p-p, 0.1 Hz–10 Hz), dropout voltage (≤250 mV at 2 mA), and Kelvin force-sense architecture for system-level accuracy.
Technical Context
The ADR3425ARJZ-R7 uses Analog Devices' DigiTrim® technology for digital post-assembly trimming of output voltage and temperature coefficient, achieving ±0.1% initial accuracy and ≤8 ppm/°C TC across −40°C to +125°C. Its dual-path force/sense topology isolates reference output from PCB trace resistance effects.
It features an enable pin with 0.85×VIN threshold for shutdown (5 μA IQ), low dropout (75 mV typical at 2 mA), and integrated ripple rejection (−60 dB at 60 Hz). Output noise density is 1 µV/√Hz at 1 kHz, supporting high-resolution signal chains without external filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V ±0.1% (±2.5 mV) - enables direct interface with 12-bit+ SAR ADCs requiring stable 2.5 V reference |
| Temp Coefficient | ≤8 ppm/°C - ensures ≤200 ppm total drift over −40°C to +125°C, critical for industrial sensor calibration |
| Quiescent Current | ≤100 μA - supports >10-year battery life in portable medical monitors and handheld test equipment |
| Dropout Voltage | ≤250 mV at 2 mA - allows operation from 2.7 V supply, compatible with single-cell Li-ion or 3.3 V LDO rails |
| Output Noise | <18 μV p-p (0.1 Hz–10 Hz) - preserves ENOB in 16-bit delta-sigma ADCs without additional filtering |
| Load Regulation | ≤30 ppm/mA sourcing - maintains accuracy under dynamic load changes in multiplexed data acquisition systems |
| Long-Term Stability | 30 ppm over 1000 hours at 50°C - reduces recalibration frequency in deployed industrial field instruments |
Pinout & Package
Package: 6-lead SOT-23 (RJ-6), 2.2 mm × 1.35 mm × 1.0 mm body, 0.95 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND FORCE | Ground return path for internal regulator | Connects to local ground plane; not sensing node - separates power return from precision reference ground |
| 2 - GND SENSE | Reference ground potential sense point | Must connect directly to lowest-potential point in load circuit to eliminate IR drop error in Kelvin configuration |
| 3 - ENABLE | Active-high digital control input | Drives internal pass element; logic high ≥0.85×VIN enables output, low ≤0.7 V disables (5 μA IQ) |
| 4 - VIN | Input supply connection | Accepts 2.7 V to 5.5 V; minimum 250 mV headroom required for full accuracy at 2 mA load |
| 5 - VOUT SENSE | Output voltage feedback sense terminal | Connects directly to ADC reference input or DAC bias node to compensate for PCB trace resistance |
| 6 - VOUT FORCE | Reference voltage output driver | Delivers regulated 2.5 V; sourced current flows through this pin while VOUT SENSE senses remote load |
Key Features
| Feature | Design Value |
|---|---|
| DigiTrim® digital trimming | Enables ±0.1% initial accuracy and ≤8 ppm/°C TC without laser trimming, improving production yield and long-term consistency |
| Force-sense Kelvin outputs | Separates VOUT FORCE and VOUT SENSE pins to eliminate voltage drop errors from PCB traces or connectors in precision measurement paths |
| Low 100 μA quiescent current | Permits continuous operation in energy-constrained applications such as wireless sensor nodes and portable ECG monitors |
| 18 μV p-p (0.1–10 Hz) noise | Supports 16-bit+ resolution in high-dynamic-range systems without external noise-reduction circuitry |
| −60 dB ripple rejection at 60 Hz | Suppresses AC line interference in industrial PLC analog input modules powered from unregulated supplies |
Applications
| Industrial Sensor Calibration | Portable Medical Instrumentation |
|---|---|
Use Scenario: Calibrating 4–20 mA loop-powered pressure transmitters in oil & gas field devices. IC Role / Device Role / Timing Role: Provides stable 2.5 V reference for 16-bit DAC generating precise current setpoints. Use Value: 8 ppm/°C TC and 30 ppm long-term drift ensure calibration validity over 5+ years without field recalibration. |
Use Scenario: Powering the reference input of a 24-bit delta-sigma ADC in a handheld blood glucose meter. IC Role / Device Role / Timing Role: Supplies ultra-low-noise 2.5 V reference to maximize SNR and minimize false readings. Use Value: 18 μV p-p (0.1–10 Hz) noise enables <0.1 mg/dL measurement resolution with single-shot acquisition. |
| Battery-Powered Data Loggers | Precision Process Control I/O Modules |
Use Scenario: Operating continuously for 10+ years on a CR2032 coin cell in environmental monitoring nodes. IC Role / Device Role / Timing Role: Delivers 2.5 V reference to microcontroller's internal ADC during periodic wake-up sampling. Use Value: 100 μA max IQ and 250 mV dropout allow direct use of declining battery voltage (2.7 V–3.0 V) without intermediate regulation. |
Use Scenario: Providing reference voltage for analog input channels in DIN-rail mounted PLC analog modules. IC Role / Device Role / Timing Role: Serves as master reference for multiple 12-bit ADCs measuring thermocouple, RTD, and 4–20 mA signals. Use Value: Force-sense architecture eliminates trace resistance error across dense PCB layouts, maintaining ±0.05% system accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3425ARMZ-R7 | Same electrical specs; 8-lead MSOP package (3 mm × 3 mm), no enable pin, no force-sense separation | Lacks shutdown control and Kelvin sensing - suitable only for fixed-supply, non-Kelvin PCB layouts | Select when board space permits larger MSOP and enable/shutdown functionality is unnecessary |
| REF3425IDBVR | Texas Instruments part; 2.5 V ±0.05% initial accuracy, 3 ppm/°C TC, 115 μA IQ, same SOT-23-6 package | Higher accuracy and lower TC but higher quiescent current - trades battery life for metrology-grade stability | Choose when ±0.05% initial tolerance and sub-4 ppm/°C TC outweigh 15 μA IQ penalty in lab-grade equipment |
Compared with ADR3425ARMZ-R7, the ADR3425ARJZ-R7 adds enable control and force-sense capability for dynamic power management and PCB layout flexibility; versus REF3425IDBVR, it offers lower IQ and proven long-term stability at slightly relaxed initial tolerance.
Availability
ADR3425ARJZ-R7 is available at Aetrix Electronics and suitable for precision data acquisition systems, industrial instrumentation, and battery-powered devices requiring stable component supply with guaranteed long-term availability and full traceability.
Supply support for ADR3425ARJZ-R7 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 cost-sensitive, high-accuracy voltage reference needs in industrial, medical, and portable instrumentation - emphasizing micropower operation, wide temperature range, and robustness in real-world PCB environments.
FAQ
What is the maximum input voltage for the ADR3425ARJZ-R7?
The absolute maximum supply voltage for the ADR3425ARJZ-R7 is 6 V, but the recommended operating range is 2.7 V to 5.5 V per the datasheet. Exceeding 5.5 V risks permanent damage, and operation below 2.7 V may cause output dropout or loss of specified accuracy. The ADR3425ARJZ-R7 requires at least 250 mV headroom above 2.5 V for full-load accuracy.
Does the ADR3425ARJZ-R7 support Kelvin (4-wire) connections?
Yes, the ADR3425ARJZ-R7 explicitly supports Kelvin connections via dedicated VOUT FORCE and VOUT SENSE pins (pins 6 and 5), along with GND FORCE and GND SENSE (pins 1 and 2). This architecture compensates for voltage drops across PCB traces or connectors, enabling true 2.500 V delivery to the load regardless of routing parasitics - a key feature confirmed in the Applications Information section.
What is the typical turn-on settling time for the ADR3425ARJZ-R7?
The ADR3425ARJZ-R7 has a typical turn-on settling time of 600 μs under standard test conditions (CIN = CL = 0.1 μF, RLoad = 1 kΩ). This value is measured from ENABLE rising edge to VOUT reaching within ±0.01% of final 2.500 V. Settling time increases with larger capacitive loads or lower input voltage, as documented in Figure 19 of the datasheet.
Can the ADR3425ARJZ-R7 sink current, and how much?
Yes, the ADR3425ARJZ-R7 can sink up to −3 mA while maintaining output accuracy. This capability allows it to actively pull down the reference node during dynamic load transitions or in circuits requiring bidirectional bias control. Sinking performance is specified across −40°C to +125°C and is validated in the ADR3425 Electrical Characteristics table (Page 5).
Is the ADR3425ARJZ-R7 RoHS compliant and lead-free?
Yes, the ADR3425ARJZ-R7 is RoHS compliant and lead-free, as confirmed in Analog Devices' official ordering guide and material declarations. The "R7" suffix denotes tape-and-reel packaging with lead-free (Pb-free) termination finish, meeting JEDEC J-STD-020 moisture sensitivity level 1 requirements for surface-mount assembly.
ADR3425ARJZ-R7 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-R7 FAQ
1.How can I place an order for ADR3425ARJZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR3425ARJZ-R7 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-R7 reliable?
The price and inventory of ADR3425ARJZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR3425ARJZ-R7 is usually 5 days.
3.What payment methods are accepted for ADR3425ARJZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR3425ARJZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR3425ARJZ-R7?
ADR3425ARJZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR3425ARJZ-R7 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-R7?
For technical support, including ADR3425ARJZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR3425ARJZ-R7 requirements.
6.How does Aetrix verify that ADR3425ARJZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADR3425ARJZ-R7 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-R7 meets industry standards.
7.What is the process for return or replacement of ADR3425ARJZ-R7?
All ADR3425ARJZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADR3425ARJZ-R7, 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-R7 part is unused and in its original packaging.
Return procedure for ADR3425ARJZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADR3425ARJZ-R7 Tags
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