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Analog Devices Inc. ADR3412ARJZ-R7
- Part No.:
- ADR3412ARJZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
ADR3412ARJZ-R7.pdf
- Description:
- IC VREF SERIES 0.1% SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,206
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Product details
Overview
ADR3412ARJZ-R7 from Analog Devices is a micropower, high-accuracy CMOS voltage reference IC delivering 1.200 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 analog reference in ADC/DAC biasing, sensor excitation, and calibration circuits for industrial instrumentation.
For engineers reviewing the ADR3412ARJZ-R7 datasheet, ADR3412ARJZ-R7 pinout, ADR3412ARJZ-R7 application, or ADR3412ARJZ-R7 equivalent, key selection criteria include its 250 mV dropout at 2 mA, 4-wire Kelvin sensing capability, low 10 μVp-p (0.1–10 Hz) output noise, and −40°C to +125°C operating range - critical for high-stability embedded measurement systems.
Technical Context
The ADR3412ARJZ-R7 uses Analog Devices' DigiTrim® technology for digital post-assembly trimming of output voltage and temperature coefficient, ensuring ±0.1% initial accuracy without laser trimming. Its dual-sense architecture (VOUT SENSE and GND SENSE) enables true 4-wire Kelvin connections to reject PCB trace resistance errors.
It features an enable pin supporting shutdown mode (5 μA IQ), low dropout operation down to 250 mV at 2 mA load, and ripple rejection of −60 dB at 60 Hz - making it suitable for noisy supply environments where stable reference integrity is non-negotiable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.200 V ±0.1% - meets 12-bit to 16-bit ADC full-scale reference tolerance without calibration. |
| Temp Coefficient | 8 ppm/°C max - contributes ≤96 ppm error over −40°C to +125°C, enabling uncalibrated industrial use. |
| Quiescent Current | 100 μA max - supports >10-year battery life in portable medical sensors at 3 V supply. |
| Dropout Voltage | 250 mV at 2 mA - allows operation from 1.45 V input, compatible with single-cell Li-ion or 1.8 V logic rails. |
| Output Noise | <10 μVp-p (0.1–10 Hz) - preserves SNR in precision weigh scales and strain-gauge front-ends. |
| Load Drive | +10 mA source / −3 mA sink - directly drives SAR ADC reference inputs and op-amp buffers without external gain stages. |
| Long-Term Drift | 30 ppm over 1000 hours - ensures calibration stability in field-deployed test equipment. |
Pinout & Package
Package: 6-lead SOT-23 (RJ-6), 2.2 mm × 1.35 mm × 1.0 mm, thermal resistance θJA = 230°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND FORCE | Ground return path for internal regulator | Connects to local ground plane; carries return current but not used for sensing. |
| 2 - GND SENSE | Reference ground potential sense point | Must connect directly to lowest-potential node (e.g., ADC AGND) to eliminate IR drop error in 4-wire configuration. |
| 3 - ENABLE | Digital enable control input | Active-high: >0.85×VIN enables output; <0.7 V disables, reducing IQ to 5 μA for power gating. |
| 4 - VIN | Unregulated input supply | Accepts 2.3 V to 5.5 V; requires ≥0.1 V/ms slew rate to avoid turn-on overshoot. |
| 5 - VOUT SENSE | Output voltage feedback sense point | Connects directly to load's reference input (e.g., ADC VREF+) to compensate for trace resistance loss. |
| 6 - VOUT FORCE | Regulated output drive terminal | Delivers 1.2 V to load; paired with VOUT SENSE for true Kelvin regulation under varying load currents. |
Key Features
| Feature | Design Value |
|---|---|
| DigiTrim® trimming | Digitally calibrated output voltage and tempco during final test - eliminates need for external calibration or laser adjustment. |
| 4-wire Kelvin sensing | Separate FORCE/SENSE pins for both VOUT and GND - removes PCB trace resistance impact on accuracy, critical for <0.01% system error budgets. |
| Low-noise design | 8 μVp-p (0.1–10 Hz) typical - enables sub-16-bit effective resolution in high-resolution data acquisition without external filtering. |
| Wide temperature range | Specified from −40°C to +125°C - supports operation in automotive engine compartments and industrial PLC modules without derating. |
| Enable-controlled shutdown | 5 μA shutdown current - allows dynamic power cycling in battery-powered IoT nodes to extend operational lifetime. |
Applications
| Industrial Process Transmitters | Precision Portable Medical Monitors |
|---|---|
Use Scenario: 4–20 mA loop-powered pressure/temperature transmitters requiring stable excitation and ADC reference under wide ambient temperature swings. IC Role / Device Role / Timing Role: Provides 1.200 V reference for sigma-delta ADC and bridge sensor excitation, with Kelvin sensing compensating for PCB thermal gradients. Use Value: Maintains ±0.1% total unadjusted error over −40°C to +85°C without recalibration, reducing field service costs. | Use Scenario: Battery-operated ECG/SpO₂ monitors needing ultra-low-power, low-noise analog front-end references for clinical-grade signal fidelity. IC Role / Device Role / Timing Role: Supplies reference voltage to 24-bit delta-sigma ADC and programmable gain amplifier, enabled only during sampling bursts. Use Value: 100 μA max IQ and 10 μVp-p noise preserve battery life and achieve ≥110 dB SNR in 100 Hz bandwidth. |
| Automotive Cabin Sensors | Calibration Equipment for Test Benches |
Use Scenario: Occupancy detection and air quality sensors in vehicle cabins exposed to thermal cycling and electrical noise from infotainment systems. IC Role / Device Role / Timing Role: Delivers stable 1.2 V reference to MEMS sensor signal chain and microcontroller ADC, rejecting 60 Hz ripple via −60 dB PSRR. Use Value: 8 ppm/°C tempco and 30 ppm long-term drift ensure <0.05% reading drift over 5-year vehicle lifecycle. | Use Scenario: Benchtop multimeters and calibration sources requiring traceable, low-drift voltage references for metrology-grade verification. IC Role / Device Role / Timing Role: Serves as secondary reference in automated calibration rigs, sourcing 10 mA to drive multiple DUT reference inputs simultaneously. Use Value: Dual-sense architecture maintains 1.2000 V ±0.0012 V accuracy despite 100 mΩ PCB trace resistance between device and load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3412ARMZ | Same electrical specs; 8-lead MSOP package (3 mm × 3 mm), higher θJA (180°C/W), no enable pin. | Lacks shutdown capability; larger footprint; better thermal performance in convection-cooled layouts. | Select when board space permits larger package and enable functionality is unnecessary. |
| REF3412RTCT | Texas Instruments part; same 1.2 V output, ±0.05% initial accuracy, 6 ppm/°C max tempco, but 125 μA max IQ and no enable pin. | Higher accuracy but higher power; no enable/shutdown; different pinout (no Kelvin sensing). | Select when tighter initial accuracy is prioritized over power savings and 4-wire compensation. |
Compared with ADR3412ARMZ and REF3412RTCT, the ADR3412ARJZ-R7 uniquely combines SOT-23 compactness, enable-controlled shutdown, and true 4-wire Kelvin sensing - essential for space-constrained, battery-aware, and metrology-critical designs where trace resistance and dynamic power management directly impact system accuracy.
Availability
ADR3412ARJZ-R7 is available at Aetrix Electronics and suitable for precision data acquisition systems, industrial instrumentation, and battery-powered devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADR3412ARJZ-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, low noise, and robust thermal performance without laser trimming.
FAQ
What is the maximum input voltage rating for the ADR3412ARJZ-R7?
The ADR3412ARJZ-R7 has an absolute maximum supply voltage rating of 6 V. Operation above this level risks permanent damage. The recommended operating input range is 2.3 V to 5.5 V, with minimum dropout of 250 mV at 2 mA load. Exceeding 6 V violates Absolute Maximum Ratings per Rev. C datasheet Table 10.
Does the ADR3412ARJZ-R7 support 4-wire (Kelvin) connection, and how is it implemented?
Yes, the ADR3412ARJZ-R7 supports true 4-wire Kelvin connection via dedicated VOUT FORCE/VOUT SENSE and GND FORCE/GND SENSE pins. VOUT SENSE connects directly to the load's reference input, while VOUT FORCE delivers current - eliminating voltage drop error from PCB traces. This is confirmed in Figure 2 and Table 12 of the Rev. C datasheet.
What is the typical output voltage noise of the ADR3412ARJZ-R7, and over what bandwidth is it specified?
The ADR3412ARJZ-R7 has typical output voltage noise of 8 μVp-p over 0.1 Hz to 10 Hz, and 28 μVrms over 10 Hz to 10 kHz. These values are specified in Table 3 (ADR3412 Electrical Characteristics) of the Rev. C datasheet and are measured with CIN = CL = 0.1 μF and RLoad = 1 kΩ.
Can the ADR3412ARJZ-R7 be used in applications requiring operation beyond 85°C ambient temperature?
Yes, the ADR3412ARJZ-R7 is fully specified from −40°C to +125°C junction temperature. Its maximum operating ambient temperature depends on PCB thermal design, but with θJA = 230°C/W (SOT-23), it supports ambient temperatures up to +105°C at 10 mA load with minimal copper - verified in Table 11 and General Description of the Rev. C datasheet.
What is the enable pin behavior of the ADR3412ARJZ-R7 during power-up and shutdown?
The ADR3412ARJZ-R7 enable pin is active-high: output enables when voltage exceeds VIN × 0.85, and shuts down when below 0.7 V. Shutdown reduces quiescent current to 5 μA. Turn-on settling time is 100 μs (CIN = CL = 0.1 μF, RLoad = 1 kΩ), per Table 3 in the Rev. C datasheet.
ADR3412ARJZ-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):
- 1.2V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 8ppm/°C
- Noise - 0.1Hz to 10Hz:
- 8µVp-p
- Noise - 10Hz to 10kHz:
- 28µVrms
- Voltage - Input:
- 2.3V ~ 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
ADR3412ARJZ-R7 FAQ
1.How can I place an order for ADR3412ARJZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR3412ARJZ-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 ADR3412ARJZ-R7 reliable?
The price and inventory of ADR3412ARJZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR3412ARJZ-R7 is usually 5 days.
3.What payment methods are accepted for ADR3412ARJZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR3412ARJZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR3412ARJZ-R7?
ADR3412ARJZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR3412ARJZ-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 ADR3412ARJZ-R7?
For technical support, including ADR3412ARJZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR3412ARJZ-R7 requirements.
6.How does Aetrix verify that ADR3412ARJZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADR3412ARJZ-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 ADR3412ARJZ-R7 meets industry standards.
7.What is the process for return or replacement of ADR3412ARJZ-R7?
All ADR3412ARJZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADR3412ARJZ-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 ADR3412ARJZ-R7 part is unused and in its original packaging.
Return procedure for ADR3412ARJZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADR3412ARJZ-R7 Tags
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LM4040DIM3X-2.5/NOPB
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AZ431LANTR-G1
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