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Analog Devices Inc. ADR4533ARZ-R7
- Part No.:
- ADR4533ARZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADR4533ARZ-R7.pdf
- Description:
- IC VREF SERIES 0.04% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,224
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Product details
Overview
ADR4533ARZ-R7 from Analog Devices is an ultralow-noise, high-accuracy voltage reference IC delivering a precise 3.300 V output with ±0.02% maximum initial error (B grade), 2 ppm/°C temperature coefficient (−40°C to +125°C), and 2.1 μV p-p (0.1 Hz to 10 Hz) output noise. It operates from 3.4 V to 15 V input, supports ±10 mA load current, and targets precision analog signal chains in high-resolution data converters.
For engineers reviewing the ADR4533ARZ-R7 datasheet, ADR4533ARZ-R7 pinout, ADR4533ARZ-R7 application, or ADR4533ARZ-R7 equivalent, key selection criteria include its 3.3 V output stability over automotive-grade temperature range, low dropout (300 mV at 2 mA), 950 μA max quiescent current, and SOIC-8 packaging for industrial instrumentation and medical sensor front-ends.
Technical Context
The ADR4533ARZ-R7 uses an advanced buried-zener core topology optimized for minimal thermal hysteresis and long-term drift-8 ppm typical at 4500 hours-enabling stable reference performance across power cycles and temperature excursions. Its dual-path ground sensing (GNDSENSE/VOUTSENSE) and force terminals (GNDFORCE/VOUTFORCE) decouple load-induced ground bounce from reference accuracy.
Designed for high-precision DC-coupled systems, it features 90 dB ripple rejection at 1 kHz, 30 ppm/mA load regulation (sourcing), and 60 ppm/mA (sinking) over −40°C to +125°C, ensuring consistent output under dynamic load conditions without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.300 V - precisely trimmed, enabling direct interface with 3.3 V ADCs and DACs without scaling. |
| Initial Error (B Grade) | ±0.02% max - translates to ±660 µV absolute tolerance, eliminating need for post-production calibration in most 16-bit+ systems. |
| Tempco (Box Method) | 2 ppm/°C (−40°C to +125°C) - ensures ≤ ±0.83 mV total drift across full industrial range, critical for battery monitoring and field instruments. |
| Output Noise (0.1–10 Hz) | 2.1 μV p-p - enables <20-bit ENOB preservation in sigma-delta converters with >100 kSPS effective resolution. |
| Quiescent Current | 950 μA max - allows operation from low-power microcontroller rails or energy-harvesting sources without compromising accuracy. |
| Dropout Voltage | 300 mV at 2 mA - supports use with 3.6 V Li-ion batteries down to 3.3 V system rail, extending usable battery life. |
| Ripple Rejection | 90 dB at 1 kHz - suppresses switching regulator noise, enabling clean reference supply in mixed-signal PCBs with shared power domains. |
Pinout & Package
ADR4533ARZ-R7 is housed in an 8-lead SOIC package (JEDEC MS-012AA), with exposed pad for thermal enhancement. Pin 1 is marked by notch or dot; pins 1, 3, 5, and 8 are unused (NIC or DNC).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NIC) | Not Internally Connected | No internal connection; leave unconnected or tie to GND for mechanical stability only. |
| 2 (VIN) | Input Voltage Supply | Accepts 3.4 V to 15 V; requires ≥100 nF local ceramic bypass capacitor to minimize PSRR degradation. |
| 3 (NIC) | Not Internally Connected | No internal connection; must remain floating or grounded per layout best practice. |
| 4 (GND) | Power Ground Reference | Main ground return path; connect to low-impedance system ground plane with short trace. |
| 5 (NIC) | Not Internally Connected | No internal connection; no electrical function; avoid routing signals underneath. |
| 6 (VOUT) | Reference Output | Primary 3.300 V output; route with guard ring and avoid adjacent noisy traces to preserve noise performance. |
| 7 (NIC) | Not Internally Connected | No internal connection; keep unconnected unless required for mechanical anchoring. |
| 8 (DNC) | Do Not Connect | Internally undefined; must remain unconnected-no pull-up, pull-down, or trace routing. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow 0.1–10 Hz noise | 2.1 μV p-p enables sub-20 ppm measurement uncertainty in precision weigh scales and strain gauge bridges. |
| Force-sense architecture | Separate VOUTFORCE/VOUTSENSE and GNDFORCE/GNDSENSE terminals eliminate IR drop errors in high-current or long-trace applications. |
| Low thermal hysteresis | −13 ppm full-cycle hysteresis (25°C→125°C→−40°C→25°C) ensures repeatable accuracy after thermal cycling in automotive ECUs. |
| AEC-Q100 qualified variants | ADR4533W (SOIC-8) meets AEC-Q100 Grade 1; ADR4533ARZ-R7 is industrial-grade but shares identical core design and qualification pedigree. |
| Long-term stability | 51 ppm drift over 4500 hours at 25°C supports 10+ year field reliability in medical diagnostic equipment without recalibration. |
Applications
| High-Resolution Data Acquisition | Automotive Battery Monitoring |
|---|---|
|
Use Scenario: 24-bit delta-sigma ADC measuring thermocouple or RTD signals in programmable logic controllers. IC Role / Device Role / Timing Role: Provides stable 3.300 V reference for ADC full-scale range, directly determining absolute measurement accuracy. Use Value: 2 ppm/°C tempco and 2.1 μV p-p noise maintain <±0.005% system gain error across −40°C to +85°C ambient, meeting IEC 61000-6-2 immunity requirements. |
Use Scenario: Real-time cell voltage monitoring in 12S Li-ion battery packs for EVs and energy storage systems. IC Role / Device Role / Timing Role: Supplies reference to 16-bit SAR ADCs sampling individual cell voltages with <1 mV absolute error. Use Value: 300 mV dropout enables operation from 3.6 V nominal battery rail down to 3.3 V, extending valid measurement window during deep discharge. |
| Industrial Process Transmitters | Portable Medical Sensors |
|
Use Scenario: 4–20 mA loop-powered pressure transmitter with HART digital overlay in hazardous environments. IC Role / Device Role / Timing Role: Serves as master reference for both analog output DAC and internal diagnostics ADC. Use Value: ±0.02% initial error eliminates factory trim steps; 950 μA IQ allows full functionality within 3.5 mA loop budget while maintaining 16-bit linearity. |
Use Scenario: Handheld ECG monitor requiring ultra-low-noise analog front-end for microvolt-level cardiac signal capture. IC Role / Device Role / Timing Role: References instrumentation amplifier gain stage and ADC conversion, defining overall SNR floor. Use Value: 2.1 μV p-p noise contributes <0.3 LSB of RMS noise to 24-bit ADC, preserving diagnostic fidelity for ST-segment analysis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF5033IDR | 3.3 V output, 3 ppm/°C max tempco (−40°C to +125°C), 3.5 μV p-p noise, 1.2 mA IQ, SOIC-8. | Higher noise and tempco; lacks force-sense architecture; lower PSRR (75 dB). | Lower-cost option where 3.5 μV p-p noise and 3 ppm/°C drift are acceptable-e.g., non-critical industrial controls. |
| ADR443ARMZ-REEL7 | 3.3 V output, 3 ppm/°C max tempco, 1.4 μV p-p noise, 1.15 mA IQ, MSOP-8. | Lower noise but higher IQ and smaller MSOP package; no AEC-Q100 variant; limited load drive (±5 mA). | Better noise performance in space-constrained designs, but unsuitable for high-current loads or automotive qualification needs. |
Compared with REF5033IDR and ADR443ARMZ-REEL7, the ADR4533ARZ-R7 delivers superior thermal stability (2 vs. 3 ppm/°C), lower quiescent current (950 μA vs. ≥1.15 mA), and integrated force-sense capability-making it optimal for high-accuracy, high-reliability, and production-calibration-sensitive applications.
Availability
ADR4533ARZ-R7 is available at Aetrix Electronics and suitable for precision data acquisition systems, high-resolution data converters, and industrial instrumentation requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for ADR4533ARZ-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, serving industrial, communications, automotive, and healthcare markets since 1965.
The ADR45xx family was engineered specifically for ultraprecise DC voltage references in metrology-grade instrumentation and safety-critical automotive subsystems, emphasizing low noise, low drift, and robust thermal behavior over extended temperature ranges.
FAQ
What is the operating temperature range for ADR4533ARZ-R7?
The ADR4533ARZ-R7 is rated for −40°C to +125°C operation (B grade). This extended industrial range ensures reliable performance in automotive engine control units, outdoor industrial sensors, and medical imaging equipment where ambient temperatures exceed standard commercial limits. The device maintains its 2 ppm/°C tempco and 2.1 μV p-p noise specification across this full range.
Does ADR4533ARZ-R7 require external capacitors for stability?
Yes, ADR4533ARZ-R7 requires a minimum 0.1 µF ceramic capacitor on the VOUT pin and a 0.1 µF capacitor on VIN for stable operation. The datasheet specifies load capacitance range of 0.1 µF to 100 µF; values outside this range may degrade transient response or increase output noise. No series resistance is needed-direct capacitor connection is recommended.
Can ADR4533ARZ-R7 be used in automotive applications?
The ADR4533ARZ-R7 itself is industrial-grade, but its pin-compatible automotive-qualified variant ADR4533W is AEC-Q100 Grade 1 certified (−40°C to +125°C). While ADR4533ARZ-R7 shares identical electrical specs and core design, system-level automotive qualification requires the W-grade part. For non-safety-critical automotive subsystems (e.g., infotainment sensor interfaces), ADR4533ARZ-R7 is widely deployed with proper derating.
How does the force-sense architecture of ADR4533ARZ-R7 improve accuracy?
ADR4533ARZ-R7 does not implement force-sense; that architecture appears only in the LCC-package variants (e.g., ADR4533BRZ-LCC). The ADR4533ARZ-R7 uses standard SOIC-8 with single VOUT and GND pins. Force-sense requires separate VOUTFORCE/VOUTSENSE and GNDFORCE/GNDSENSE terminals-available only in LCC packages per Table 10 of the datasheet. Confusion arises from family-level documentation, but ADR4533ARZ-R7 is strictly a 6-pin functional SOIC device.
What is the maximum input voltage rating for ADR4533ARZ-R7?
The absolute maximum input voltage for ADR4533ARZ-R7 is 16 V, per the Absolute Maximum Ratings table. However, the recommended operating input range is 3.4 V to 15 V. Exceeding 15 V risks violating safe operating area margins, especially at high temperature, and may accelerate long-term drift. For 12 V rail applications, ensure transient suppression to prevent overshoot beyond 16 V.
ADR4533ARZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- ±0.04%
- Temperature Coefficient:
- 4ppm/°C
- Noise - 0.1Hz to 10Hz:
- 2.1µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 3.4V ~ 15V
- Current - Supply:
- 950µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADR4533ARZ-R7 FAQ
1.How can I place an order for ADR4533ARZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR4533ARZ-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 ADR4533ARZ-R7 reliable?
The price and inventory of ADR4533ARZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR4533ARZ-R7 is usually 5 days.
3.What payment methods are accepted for ADR4533ARZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR4533ARZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR4533ARZ-R7?
ADR4533ARZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR4533ARZ-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 ADR4533ARZ-R7?
For technical support, including ADR4533ARZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR4533ARZ-R7 requirements.
6.How does Aetrix verify that ADR4533ARZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADR4533ARZ-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 ADR4533ARZ-R7 meets industry standards.
7.What is the process for return or replacement of ADR4533ARZ-R7?
All ADR4533ARZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADR4533ARZ-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 ADR4533ARZ-R7 part is unused and in its original packaging.
Return procedure for ADR4533ARZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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