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Analog Devices Inc. ADR423ARMZ-REEL7
- Part No.:
- ADR423ARMZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADR423ARMZ-REEL7.pdf
- Description:
- IC VREF SERIES 0.13% 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,568
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Product details
Overview
ADR423ARMZ-REEL7 from Analog Devices is an ultraprecision XFET® voltage reference delivering a stable 3.000 V output with ±1.5 mV (B-grade) initial accuracy, 3 ppm/°C max temperature coefficient, 2.0 μV p-p (0.1 Hz to 10 Hz) low-noise performance, and 10 mA output current capability - deployed in high-resolution ADC/DAC biasing and portable medical instrument power rails.
For engineers reviewing the ADR423ARMZ-REEL7 datasheet, ADR423ARMZ-REEL7 pinout, ADR423ARMZ-REEL7 application, or ADR423ARMZ-REEL7 equivalent, key selection criteria include long-term stability (50 ppm/1000 h), load regulation (70 ppm/mA), wide −40°C to +125°C operation, and trim-adjustable ±0.5% output without degrading TC or noise.
Technical Context
The ADR423ARMZ-REEL7 uses eXtra implanted junction FET (XFET) architecture to generate its 3.000 V reference, combining a low-drift intrinsic ~0.5 V JFET pinch-off voltage difference with a PTAT correction current to achieve <3 ppm/°C drift. Its patented curvature compensation minimizes nonlinearity across temperature.
It operates from 5 V to 18 V input, requires no output capacitor for stability, supports Kelvin sensing via dedicated TRIM pin, and maintains 50 ppm long-term stability after 1000 hours at 125°C - distinguishing it from bandgap and buried Zener references in noise, hysteresis, and supply headroom efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.000 V ±1.5 mV (B-grade); enables precise 12-/16-bit SAR and sigma-delta converter full-scale calibration. |
| Temp Coefficient | ≤3 ppm/°C (−40°C to +125°C); ensures ≤±0.36 mV total drift over industrial temperature range. |
| Voltage Noise | 2.0 μV p-p (0.1–10 Hz); critical for sub-LSB noise floor in 24-bit data acquisition systems. |
| Load Regulation | 70 ppm/mA; guarantees ≤±0.21 mV shift when sourcing 0–10 mA - sufficient for driving ADC reference inputs and op-amp buffers. |
| Quiescent Current | ≤500 µA; allows battery-powered instrumentation to maintain >1-year runtime on coin-cell supplies. |
| Long-Term Stability | 50 ppm/1000 h; reduces recalibration frequency in field-deployed test equipment and optical network controllers. |
| Supply Headroom | ≥2 V (VIN ≥5 V); permits use with low-dropout regulators or single-cell Li+ battery systems with minimal overhead. |
Pinout & Package
ADR423ARMZ-REEL7 is housed in an 8-lead MSOP (RM) package - 30% smaller than SOIC, with 0.65 mm lead pitch and exposed pad for thermal enhancement. Pin compatibility matches ADR420/421/425 family.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 TP | Factory Test Pin | No user connection permitted; internal test access only - floating or loading causes functional failure. |
| 2 VIN | Reference Input Supply | Accepts 5–18 V; minimum 2 V headroom required above VOUT for regulation. |
| 3, 7 NIC | No Internal Connection | Unbonded pins; must remain unconnected and unstubbed on PCB. |
| 4 GND | Analog Ground Reference | Low-impedance return path for reference core and output stage; separate from digital ground. |
| 5 TRIM | Output Voltage Adjustment | Enables ±0.5% fine-tuning of VOUT via external resistor divider without affecting TC or noise. |
| 6 VOUT | Precision Output Terminal | Delivers regulated 3.000 V; supports 10 mA sink/source; Kelvin-sense capable when used with TRIM. |
Key Features
| Feature | Design Value |
|---|---|
| XFET® Reference Architecture | Delivers lower thermal hysteresis (40 ppm typical) and 3× better noise vs. bandgap references at same power. |
| Trim-Adjustable Output | ±0.5% output tuning via external resistors preserves initial accuracy, TC, and long-term stability. |
| No Output Capacitor Required | Guaranteed stability under all load conditions (0–10 mA); eliminates BOM cost and layout sensitivity. |
| Extended Temperature Range | Full specification from −40°C to +125°C enables deployment in automotive engine control and industrial PLC modules. |
| Low Power Dissipation | Max 500 µA quiescent current enables use in energy-harvesting sensor nodes and portable diagnostics. |
Applications
| High-Resolution Data Acquisition | Portable Medical Instrumentation |
|---|---|
Use Scenario: 24-bit delta-sigma ADC in precision weigh scale or chromatography analyzer requiring <1 LSB error over temperature. IC Role / Device Role / Timing Role: Primary reference source for ADC conversion, providing stable 3.000 V full-scale reference with ultra-low 2.0 μV p-p noise. Use Value: Enables true 22-bit effective resolution by limiting reference-induced noise contribution to <0.1 LSB. | Use Scenario: Battery-powered ECG front-end where supply voltage varies from 3.3 V to 4.2 V during discharge cycle. IC Role / Device Role / Timing Role: Precision bias reference for instrumentation amplifiers and anti-alias filters, operating from 5 V LDO derived from Li+ cell. Use Value: Maintains <±0.5 mV total error across temperature and life, ensuring diagnostic-grade signal fidelity without recalibration. |
| Optical Network Control Circuits | Industrial Process Control Systems |
Use Scenario: Laser diode bias control in DWDM transceivers requiring stable current setpoints over −5°C to +70°C ambient. IC Role / Device Role / Timing Role: Reference for high-accuracy DAC generating laser modulation current, rejecting supply ripple via −75 dB RRR at 1 kHz. Use Value: Limits wavelength drift to <±0.5 pm by stabilizing DAC output against line/load variations and thermal cycling. | Use Scenario: 4–20 mA loop transmitter in hazardous-area pressure transmitters operating continuously at 85°C ambient. IC Role / Device Role / Timing Role: Stable 3.000 V reference for microcontroller ADC and analog output stage, qualified for extended industrial temperature range. Use Value: Ensures <0.1% full-scale accuracy over 10-year field life, meeting SIL-2 functional safety requirements for process shutdown systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR443ARMZ-REEL7 | Lower 0.9 ppm/°C max TC, 1.2 μV p-p noise, but higher 950 µA IQ and 7 V min VIN. | Better for metrology-grade instruments; unsuitable for low-voltage battery systems. | Select ADR443ARMZ-REEL7 only if TC and noise dominate over power and supply constraints. |
| REF5030IDR | 3 ppm/°C TC, 2.2 μV p-p noise, 1.1 mA IQ, SOIC-8 package; no TRIM pin. | Lacks output adjustability; larger footprint; higher quiescent current limits battery life. | Choose REF5030IDR only when TRIM functionality is unnecessary and MSOP size is not critical. |
Compared with ADR423ARMZ-REEL7, ADR443ARMZ-REEL7 improves TC and noise at the cost of 90% higher supply current and reduced input voltage flexibility, while REF5030IDR offers identical TC but forfeits trimming and increases board area - making ADR423ARMZ-REEL7 optimal for space-constrained, adjustable, low-power precision systems.
Availability
ADR423ARMZ-REEL7 is available at Aetrix Electronics and suitable for high-resolution data acquisition, portable medical instrumentation, and industrial process control systems requiring stable component supply with guaranteed long-term availability.
Supply support for ADR423ARMZ-REEL7 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 is a global leader in high-performance analog, mixed-signal, and DSP ICs, serving precision measurement, industrial automation, and communications markets since 1965.
The ADR42x product line was designed specifically for ultraprecision voltage reference applications demanding low noise, low drift, and high stability - targeting data converters, optical networks, and portable instrumentation.
FAQ
What is the output voltage tolerance of the ADR423ARMZ-REEL7 at 25°C?
The ADR423ARMZ-REEL7 has a nominal output voltage of 3.000 V. For the B-grade version (indicated by ARMZ suffix), initial accuracy is ±1.5 mV (±0.05%) at 25°C, as specified in Table 4 of the Rev. J datasheet. This tolerance excludes solder heat-induced shift, which may add up to ±0.5 mV depending on reflow profile.
Can the ADR423ARMZ-REEL7 operate from a 3.3 V supply?
No, the ADR423ARMZ-REEL7 requires a minimum supply voltage of 5 V due to its 2 V minimum headroom requirement (VIN − VOUT ≥ 2 V). A 3.3 V supply is insufficient and will prevent proper regulation. A step-up converter or LDO with ≥5 V output must be used.
Does the ADR423ARMZ-REEL7 require an output capacitor for stability?
No, the ADR423ARMZ-REEL7 is internally compensated and remains stable without any output capacitor across its full 0–10 mA load range. A 0.1 µF ceramic capacitor may be added solely to reduce broadband noise, but it degrades turn-on settling time proportionally to capacitance value.
How is the TRIM pin used on the ADR423ARMZ-REEL7?
The TRIM pin (Pin 5) allows adjustment of the output voltage over a ±0.5% range using an external resistor divider. Connecting a potentiometer between VOUT and GND, with its wiper to TRIM, enables fine calibration. This adjustment does not degrade temperature coefficient, noise, or long-term stability per datasheet Figure 18 and Table 4 notes.
What is the maximum load current supported by the ADR423ARMZ-REEL7?
The ADR423ARMZ-REEL7 is rated for continuous output current up to 10 mA, as confirmed in the General Description and Absolute Maximum Ratings sections. It maintains full specifications - including 70 ppm/mA load regulation and 3 ppm/°C TC - across this entire range at temperatures from −40°C to +125°C.
ADR423ARMZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- XFET®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.13%
- Temperature Coefficient:
- 10ppm/°C
- Noise - 0.1Hz to 10Hz:
- 2µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 5V ~ 18V
- Current - Supply:
- 600µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
ADR423ARMZ-REEL7 FAQ
1.How can I place an order for ADR423ARMZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR423ARMZ-REEL7 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 ADR423ARMZ-REEL7 reliable?
The price and inventory of ADR423ARMZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR423ARMZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADR423ARMZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR423ARMZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR423ARMZ-REEL7?
ADR423ARMZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR423ARMZ-REEL7 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 ADR423ARMZ-REEL7?
For technical support, including ADR423ARMZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR423ARMZ-REEL7 requirements.
6.How does Aetrix verify that ADR423ARMZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADR423ARMZ-REEL7 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 ADR423ARMZ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADR423ARMZ-REEL7?
All ADR423ARMZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADR423ARMZ-REEL7, 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 ADR423ARMZ-REEL7 part is unused and in its original packaging.
Return procedure for ADR423ARMZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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