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Analog Devices Inc. ADR3412ARJZ-R2
- Part No.:
- ADR3412ARJZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
ADR3412ARJZ-R2.pdf
- Description:
- IC VREF SERIES 0.1% SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,435
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Product details
Overview
ADR3412ARJZ-R2 from Analog Devices is a micropower, high-accuracy CMOS voltage reference 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 supports precision data acquisition systems requiring stable low-noise excitation for 12-bit to 16-bit ADCs and DACs.
For engineers reviewing the ADR3412ARJZ-R2 datasheet, ADR3412ARJZ-R2 pinout, ADR3412ARJZ-R2 application, or ADR3412ARJZ-R2 equivalent, key selection criteria include dropout voltage (250 mV at 2 mA), 4-wire Kelvin sensing capability, and operation across −40°C to +125°C industrial temperature range with <10 μVp-p (0.1 Hz–10 Hz) output noise.
Technical Context
The ADR3412ARJZ-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 dual-sense architecture separates force and sense paths for GND and VOUT to minimize PCB trace resistance errors.
It features an enable pin with 0.7 V shutdown threshold and VIN × 0.85 activation threshold, supporting low-power system sequencing. The device maintains regulation down to 2.3 V input and delivers ±10 mA sourcing/sinking capability with load regulation as low as 14 ppm/mA (sourcing, −40°C to +125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.200 V ±0.1% - enables direct interface with 1.2 V logic or ratiometric ADC references without scaling. |
| Initial Accuracy | ±0.1% (±1.2 mV) - eliminates need for system-level calibration in portable instrumentation. |
| Temp Coefficient | 8 ppm/°C max (−40°C to +125°C) - ensures ≤96 ppm total drift over full industrial range. |
| Quiescent Current | 100 μA max - supports >10-year battery life in coin-cell-powered sensor nodes. |
| Dropout Voltage | 250 mV at 2 mA - allows operation from 1.45 V supply, compatible with single Li-ion or two alkaline cells. |
| Output Noise | <10 μVp-p (0.1 Hz–10 Hz) - preserves SNR in high-resolution delta-sigma ADC front-ends. |
| Enable Threshold | VH = VIN × 0.85, VL = 0.7 V - ensures clean power-up/down control with standard GPIOs. |
Pinout & Package
Package: 6-lead SOT-23 (RJ-6), 2.2 mm × 1.35 mm × 1.0 mm, 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 voltage sensing. |
| 2 - GND SENSE | Reference ground potential sense point | Must connect directly to lowest-potential node (e.g., ADC REF–) to reject trace IR drop. |
| 3 - ENABLE | Digital on/off control input | Active-high; pulls device into 5 μA shutdown when <0.7 V; enables normal operation at ≥VIN × 0.85. |
| 4 - VIN | Unregulated input supply | Accepts 2.3 V to 5.5 V; requires ≥100 nF ceramic bypass capacitor placed near pin. |
| 5 - VOUT SENSE | Output voltage feedback sense point | Connects directly to load's reference input (e.g., ADC REF+) to compensate for trace resistance. |
| 6 - VOUT FORCE | Regulated output drive terminal | Delivers 10 mA source / 3 mA sink; must be routed separately from VOUT SENSE for 4-wire operation. |
Key Features
| Feature | Design Value |
|---|---|
| 4-wire Kelvin sensing | Separate FORCE/SENSE pins for both VOUT and GND eliminate PCB trace resistance error in precision ratiometric systems. |
| DigiTrim® trimming | Digital post-package calibration achieves ±0.1% initial accuracy and 8 ppm/°C tempco without laser trimming. |
| Low-noise architecture | <10 μVp-p (0.1 Hz–10 Hz) enables use in 24-bit delta-sigma ADCs without external filtering. |
| Wide temperature range | Specified from −40°C to +125°C with guaranteed long-term stability (30 ppm @ 1000 hrs, 50°C). |
| Ultra-low IQ | 100 μA max operating current and 5 μA shutdown current extend battery runtime in portable medical devices. |
Applications
| Portable ECG Monitor | Industrial Pressure Transmitter |
|---|---|
|
Use Scenario: Battery-powered handheld ECG unit acquiring microvolt-level cardiac signals with 16-bit SAR ADC. IC Role / Device Role / Timing Role: Provides stable 1.200 V reference for ADC and analog front-end PGA gain-setting resistors. Use Value: ±0.1% initial accuracy and <10 μVp-p noise maintain diagnostic-grade signal fidelity without recalibration. |
Use Scenario: 4–20 mA loop-powered pressure sensor operating in harsh factory environments. IC Role / Device Role / Timing Role: Supplies excitation voltage to bridge sensor and reference for 24-bit delta-sigma ADC. Use Value: 8 ppm/°C tempco and −40°C to +125°C rating ensure consistent measurement accuracy across ambient extremes. |
| Wireless Sensor Node | Automotive Cabin Air Quality Module |
|
Use Scenario: LoRaWAN-enabled CO₂ sensor using coin-cell battery with 10-year target lifetime. IC Role / Device Role / Timing Role: Powers low-power gas sensor heater and serves as ADC reference during brief active measurement windows. Use Value: 100 μA max IQ and 5 μA shutdown current enable multi-year operation; 250 mV dropout allows use with aging batteries. |
Use Scenario: HVAC control module inside vehicle cabin measuring VOC and humidity with integrated ADC. IC Role / Device Role / Timing Role: Provides ratiometric reference for bridge-based NDIR CO₂ sensor and capacitive humidity sensor. Use Value: GND/VOUT force-sense architecture rejects wiring resistance in cramped harnesses; AEC-Q200 qualification supported via package robustness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR360ARTZ-R7 | 2.048 V output, 3 ppm/°C max tempco, 125 μA IQ, same SOT-23-6 package | Higher accuracy and lower noise, but incompatible output voltage for 1.2 V systems | Select only if system requires 2.048 V reference and tighter tempco; not a drop-in replacement for ADR3412ARJZ-R2. |
| REF3312AIDBZR | 1.2 V output, ±0.2% initial accuracy, 10 ppm/°C tempco, 3.8 μA IQ, SOT-23-3 | Lower IQ and smaller footprint, but no force-sense pins and higher accuracy tolerance | Choose for ultra-low-power applications where 4-wire sensing is unnecessary and ±0.2% accuracy suffices. |
Compared with ADR3412ARJZ-R2, ADR360ARTZ-R7 offers superior stability but mismatches the required 1.2 V output, while REF3312AIDBZR reduces power and size at the expense of sensing precision and initial accuracy-making ADR3412ARJZ-R2 optimal for high-fidelity 4-wire ratiometric designs.
Availability
ADR3412ARJZ-R2 is available at Aetrix Electronics and suitable for precision data acquisition systems, industrial instrumentation, and battery-powered medical devices requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for ADR3412ARJZ-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 cost-sensitive, high-accuracy applications demanding low power, wide temperature operation, and 4-wire Kelvin sensing-targeting portable instrumentation, process control, and automotive subsystems.
FAQ
What is the minimum input voltage required for ADR3412ARJZ-R2 to maintain regulation?
The ADR3412ARJZ-R2 requires a minimum input voltage of 2.3 V to maintain output regulation within specifications. At 2 mA load, the dropout voltage is 250 mV, meaning VIN must remain ≥1.45 V above VOUT (i.e., ≥1.45 V) to sustain 1.200 V output accuracy. Below 2.3 V, performance degrades per Absolute Maximum Ratings.
Does ADR3412ARJZ-R2 support true 4-wire (Kelvin) connection?
Yes, ADR3412ARJZ-R2 explicitly supports 4-wire Kelvin connections via dedicated GND FORCE/GND SENSE and VOUT FORCE/VOUT SENSE pins. This architecture isolates sensing from current-carrying paths, eliminating voltage errors caused by PCB trace resistance-critical for sub-0.1% system accuracy.
What is the typical output voltage noise of ADR3412ARJZ-R2 in the 0.1 Hz to 10 Hz band?
The ADR3412ARJZ-R2 delivers typical output voltage noise of 8 μVp-p in the 0.1 Hz to 10 Hz band, as specified in Table 3 of the Rev. C datasheet. This low flicker noise enables high-precision DC measurements in applications such as weigh scales and medical biosensors.
Can ADR3412ARJZ-R2 operate over the full −40°C to +125°C temperature range?
Yes, ADR3412ARJZ-R2 is fully specified and tested across −40°C to +125°C. Key parameters-including initial accuracy (±0.1%), temperature coefficient (8 ppm/°C max), and load regulation-are guaranteed over this extended industrial temperature range, making it suitable for under-hood automotive and outdoor industrial use.
How does the ENABLE pin function in ADR3412ARJZ-R2?
The ENABLE pin on ADR3412ARJZ-R2 controls device state: logic high (≥VIN × 0.85) enables normal operation; logic low (<0.7 V) places the device in shutdown mode, reducing quiescent current to 5 μA. Pin leakage is ≤3 μA, allowing direct drive from microcontroller GPIOs without external level-shifting.
ADR3412ARJZ-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):
- 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-R2 FAQ
1.How can I place an order for ADR3412ARJZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR3412ARJZ-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 ADR3412ARJZ-R2 reliable?
The price and inventory of ADR3412ARJZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR3412ARJZ-R2 is usually 5 days.
3.What payment methods are accepted for ADR3412ARJZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR3412ARJZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR3412ARJZ-R2?
ADR3412ARJZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR3412ARJZ-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 ADR3412ARJZ-R2?
For technical support, including ADR3412ARJZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR3412ARJZ-R2 requirements.
6.How does Aetrix verify that ADR3412ARJZ-R2 is sourced from the original manufacturer or authorized distributors?
All ADR3412ARJZ-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 ADR3412ARJZ-R2 meets industry standards.
7.What is the process for return or replacement of ADR3412ARJZ-R2?
All ADR3412ARJZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADR3412ARJZ-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 ADR3412ARJZ-R2 part is unused and in its original packaging.
Return procedure for ADR3412ARJZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADR3412ARJZ-R2 Tags
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