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Analog Devices Inc. ADR3433ARJZ-R7
- Part No.:
- ADR3433ARJZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- SOT-23-6
- Datasheet:
-
ADR3433ARJZ-R7.pdf
- Description:
- IC VREF SERIES 0.1% SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:8,195
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Product details
Overview
ADR3433ARJZ-R7 from Analog Devices is a micropower, high-accuracy CMOS voltage reference delivering 3.300 V ±0.1% initial accuracy, 8 ppm/°C max temperature coefficient, and 250 mV dropout at 2 mA across −40°C to +125°C. It provides 10 mA sourcing / −3 mA sinking capability with 100 μA max quiescent current and <25 μVp-p (0.1 Hz–10 Hz) output noise - used in precision ADC/DAC biasing, sensor signal conditioning, and portable instrumentation.
For engineers reviewing the ADR3433ARJZ-R7 datasheet, ADR3433ARJZ-R7 pinout, ADR3433ARJZ-R7 application, or ADR3433ARJZ-R7 equivalent, key selection criteria include its 3.3 V output stability under load/temperature variation, force-sense Kelvin configuration for low-drift operation, low-noise performance in battery-powered measurement systems, and SOT-23-6 packaging compatible with space-constrained PCB layouts.
Technical Context
The ADR3433ARJZ-R7 employs Analog Devices' DigiTrim® technology for digital post-assembly trimming of output voltage and temperature coefficient, achieving ±0.1% initial accuracy and 8 ppm/°C max TCVOUT. Its dual-force/dual-sense architecture (VIN/VOUT FORCE and GND/VOUT SENSE pins) enables precise remote sensing to eliminate PCB trace resistance errors.
It operates from 3.5 V to 5.5 V input, supports enable-controlled shutdown (5 μA IQ), and maintains stable regulation with 120 ppm/V line regulation over full temperature range. Output hysteresis is limited to 70 ppm, and long-term drift is 30 ppm over 1000 hours at 50°C - critical for calibration-critical industrial and medical systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.300 V ±0.1% (±3.3 mV) - ensures accurate scaling for 12-/16-bit SAR ADCs without software calibration. |
| Temp Coefficient | 8 ppm/°C max (−40°C to +125°C) - contributes ≤±0.99 mV error over full industrial range. |
| Quiescent Current | 100 μA max - enables >1-year battery life in 10 μA sleep-mode IoT sensors. |
| Dropout Voltage | 250 mV at 2 mA - allows operation from 3.55 V supply, compatible with single-cell LiFePO4 or regulated 3.3 V rails. |
| Output Noise | <25 μVp-p (0.1 Hz–10 Hz) - preserves ENOB in 24-bit delta-sigma ADC front-ends. |
| Load Regulation | 9 ppm/mA sourcing (0–10 mA) - introduces <±0.03 mV shift when driving multiple op-amp references. |
| Enable Threshold | VH = VIN × 0.85, VL = 0.7 V - ensures robust logic-level compatibility with 1.8 V/3.3 V microcontrollers. |
Pinout & Package
ADR3433ARJZ-R7 is housed in a 6-lead SOT-23 package (RJ-6), with θJA = 230°C/W. Its force-sense topology separates current-carrying and sensing paths to minimize voltage drop errors in precision applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND FORCE | Ground return path for internal regulator current | Connects to power 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 ground bounce errors. |
| 3 - ENABLE | Active-high digital control input | Pulls high ≥VIN × 0.85 to activate; ≤0.7 V disables, reducing IQ to 5 μA for power gating. |
| 4 - VIN | Unregulated input supply connection | Accepts 3.5–5.5 V; requires ≥0.1 V/ms slew rate to avoid turn-on overshoot per datasheet. |
| 5 - VOUT SENSE | Output voltage feedback sense node | Connects directly to load's reference input (e.g., ADC VREF+) to compensate for trace IR drop. |
| 6 - VOUT FORCE | Regulated output drive terminal | Delivers 3.3 V to load; paired with VOUT SENSE to form 4-wire Kelvin output configuration. |
Key Features
| Feature | Design Value |
|---|---|
| DigiTrim® digital trimming | Enables ±0.1% initial accuracy and 8 ppm/°C TCVOUT without laser trimming, improving production yield and long-term stability. |
| Force-sense Kelvin outputs | Separates VOUT FORCE (current delivery) and VOUT SENSE (feedback) to eliminate PCB trace resistance impact on reference accuracy. |
| Low 0.1–10 Hz noise | <25 μVp-p enables sub-16-bit effective resolution in high-gain sensor amplifiers and precision weigh scales. |
| Wide temperature range | Specified from −40°C to +125°C - supports under-hood automotive sensors and industrial process controllers without derating. |
| Enable-controlled shutdown | Reduces quiescent current to 5 μA, enabling duty-cycled operation in portable gas analyzers and handheld test equipment. |
Applications
| Industrial Data Acquisition | Portable Medical Instrumentation |
|---|---|
|
Use Scenario: High-resolution thermocouple or RTD measurement in PLC analog input modules. IC Role / Device Role / Timing Role: Provides stable 3.3 V reference for 24-bit delta-sigma ADCs and programmable gain instrumentation amplifiers. Use Value: 8 ppm/°C TCVOUT and 70 ppm hysteresis ensure <±0.01% system gain drift over thermal cycling - eliminating field recalibration. |
Use Scenario: Battery-powered ECG monitor requiring low-noise, low-power analog front-end. IC Role / Device Role / Timing Role: Supplies reference voltage for ADC and analog comparator circuits in ultra-low-power sleep/wake cycles. Use Value: 100 μA max IQ and 5 μA shutdown current extend AA battery life beyond 18 months; <25 μVp-p noise prevents baseline wander in 0.05–150 Hz biopotential signals. |
| Automotive Sensor Signal Conditioning | Calibration Equipment |
|
Use Scenario: Pressure transducer interface in engine control units operating at 125°C junction temperature. IC Role / Device Role / Timing Role: Bias reference for ratiometric bridge amplifiers and diagnostic ADCs in ASIL-B subsystems. Use Value: −40°C to +125°C operation with 30 ppm/1000h long-term stability meets ISO/TS 16949 reliability requirements for automotive electronics. |
Use Scenario: Portable multimeter or calibrator requiring traceable voltage reference accuracy. IC Role / Device Role / Timing Role: Primary reference source for DAC-based output generation and self-test circuitry. Use Value: ±0.1% initial accuracy and 120 ppm/V line regulation allow direct use in Class II portable calibrators without external trimming or averaging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR366ARJZ-R7 | 3.3 V output, ±0.06% initial accuracy, 3 ppm/°C TCVOUT, but higher 180 μA IQ and no enable pin. | Better accuracy/stability for metrology-grade gear; unsuitable where dynamic power gating is required. | Select ADR366ARJZ-R7 only if sub-ppm drift and tighter initial tolerance outweigh disable functionality and higher IQ. |
| REF196GS | 3.3 V output, ±0.1% initial accuracy, 15 ppm/°C TCVOUT, 65 μA IQ, SOIC-8 package, no enable. | Lower cost, wider availability, but higher tempco limits use in wide-temperature industrial enclosures. | Choose REF196GS for cost-sensitive, non-automotive applications where 15 ppm/°C drift is acceptable and SOT-23 footprint isn't mandatory. |
Compared with ADR3433ARJZ-R7, ADR366ARJZ-R7 offers superior accuracy and stability at the expense of disable capability and higher quiescent current, while REF196GS trades tempco and package size for lower unit cost - making ADR3433ARJZ-R7 the optimal balance of precision, power control, and compactness for portable and automotive designs.
Availability
ADR3433ARJZ-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 continuity and RoHS-compliant sourcing.
Supply support for ADR3433ARJZ-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 portable, industrial, and automotive systems - emphasizing micropower operation, force-sense architecture, and extended temperature performance without sacrificing precision.
FAQ
What is the minimum input voltage required for ADR3433ARJZ-R7 to maintain regulation?
The ADR3433ARJZ-R7 requires a minimum input voltage of 3.5 V to maintain ±0.1% output accuracy across temperature and load. At 2 mA load, its dropout voltage is specified up to 250 mV - meaning VIN must be ≥3.55 V for full-spec operation. Below this, output voltage may deviate beyond the ±3.3 mV initial tolerance band, especially at elevated temperatures.
Does ADR3433ARJZ-R7 support true 4-wire Kelvin connection?
Yes, ADR3433ARJZ-R7 implements a true 4-wire Kelvin configuration via separate VOUT FORCE/VOUT SENSE and GND FORCE/GND SENSE pins. This allows physical separation of current-carrying and sensing paths - eliminating voltage drop errors from PCB traces or connectors, which is essential for maintaining ±0.1% accuracy in high-precision measurement systems.
How does the enable pin function on ADR3433ARJZ-R7?
The ENABLE pin on ADR3433ARJZ-R7 is active-high: it enables normal operation when pulled ≥VIN × 0.85, and places the device in shutdown mode drawing only 5 μA when held ≤0.7 V. Pin leakage is ≤3 μA, ensuring compatibility with open-drain GPIOs or level-shifted control signals from low-voltage MCUs.
Can ADR3433ARJZ-R7 sink current, and what is its maximum sink capability?
Yes, ADR3433ARJZ-R7 can actively sink up to −3 mA while maintaining regulation. This capability supports bidirectional reference buffering - for example, driving the reference input of an op-amp configured as a precision current sink or interfacing with certain SAR ADCs that draw transient current during conversion cycles.
What is the long-term stability specification for ADR3433ARJZ-R7?
ADR3433ARJZ-R7 exhibits 30 ppm typical long-term output voltage drift after 1000 hours of operation at 50°C. This value reflects parametric shift due to silicon aging and package stress - a key metric for calibration-critical instruments where annual recalibration intervals depend on reference stability.
ADR3433ARJZ-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):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 8ppm/°C
- Noise - 0.1Hz to 10Hz:
- 25µVp-p
- Noise - 10Hz to 10kHz:
- 46µVrms
- Voltage - Input:
- 3.5V ~ 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
ADR3433ARJZ-R7 FAQ
1.How can I place an order for ADR3433ARJZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR3433ARJZ-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 ADR3433ARJZ-R7 reliable?
The price and inventory of ADR3433ARJZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR3433ARJZ-R7 is usually 5 days.
3.What payment methods are accepted for ADR3433ARJZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR3433ARJZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR3433ARJZ-R7?
ADR3433ARJZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR3433ARJZ-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 ADR3433ARJZ-R7?
For technical support, including ADR3433ARJZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR3433ARJZ-R7 requirements.
6.How does Aetrix verify that ADR3433ARJZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADR3433ARJZ-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 ADR3433ARJZ-R7 meets industry standards.
7.What is the process for return or replacement of ADR3433ARJZ-R7?
All ADR3433ARJZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADR3433ARJZ-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 ADR3433ARJZ-R7 part is unused and in its original packaging.
Return procedure for ADR3433ARJZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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