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Analog Devices Inc. ADR4550ARZ-R7
- Part No.:
- ADR4550ARZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADR4550ARZ-R7.pdf
- Description:
- IC VREF SERIES 0.04% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,155
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Product details
Overview
ADR4550ARZ-R7 from Analog Devices is a precision 5.000 V ultralow-noise voltage reference IC in an 8-lead SOIC package, featuring ±0.02% initial output error (B/C/D grade), 2 ppm/°C max temperature coefficient (B grade, −40°C to +125°C), and 2.8 μV p-p (0.1 Hz to 10 Hz) output noise - deployed in high-resolution ADC biasing and automotive battery monitoring systems.
For engineers reviewing the ADR4550ARZ-R7 datasheet, ADR4550ARZ-R7 pinout, ADR4550ARZ-R7 application, or ADR4550ARZ-R7 equivalent, key selection criteria include its 5.000 V output stability over industrial temperature range, low 950 μA quiescent current, 300 mV dropout at 2 mA, and SOIC-8 footprint compatibility with precision data acquisition signal chains.
Technical Context
The ADR4550ARZ-R7 employs an advanced buried-zener core topology optimized for minimal thermally induced hysteresis and long-term drift (8 ppm typical at 4500 hours), enabling stable reference performance across thermal cycling and power cycles in safety-critical instrumentation.
It supports dual ground sensing (GNDSENSE and GNDFORCE) and remote voltage sensing (VOUTSENSE and VOUTFORCE) only in LCC variants; the SOIC-packaged ADR4550ARZ-R7 uses single-point GND and VOUT connections with five NIC pins and one DNC pin - confirming its simplified layout for non-ratiometric, medium-accuracy applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V ±0.02% (B/C/D grade) - enables direct interface with 16-bit+ SAR and delta-sigma ADCs without gain calibration. |
| Tempco (B grade) | 2 ppm/°C (−40°C to +125°C, box method) - ensures ≤120 ppm total drift over full industrial range, critical for uncalibrated field instruments. |
| Output Noise | 2.8 μV p-p (0.1 Hz–10 Hz) - contributes <0.5 LSB error in 24-bit systems with 5 V full-scale range. |
| Quiescent Current | 950 μA max - allows operation from low-power microcontroller rails or energy-harvesting supplies. |
| Dropout Voltage | 300 mV at 2 mA load - supports regulation from 5.3 V supplies, easing LDO selection in multi-rail systems. |
| Load Current | ±10 mA - drives ADC reference inputs, op-amp buffers, and small DACs without external amplification. |
| Ripple Rejection | 90 dB at 1 kHz - suppresses switching regulator noise coupling into precision analog signal paths. |
Pinout & Package
ADR4550ARZ-R7 is housed in an 8-lead SOIC package (JEDEC MS-012AA, 150 mil width) with exposed pad not electrically connected. Pin 1 is NC; Pins 2, 4, 6, and 8 are VIN, GND, VOUT, and DNC respectively; Pins 3, 5, and 7 are NC. This layout minimizes parasitic coupling and simplifies PCB routing for single-ended reference use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (NIC) | Not Internally Connected | No internal connection; may be left floating or tied to GND for mechanical stability. |
| Pin 2 (VIN) | Input Voltage Connection | Accepts 5.1 V to 15 V supply; requires ≥100 nF ceramic bypass capacitor close to pin. |
| Pin 3 (NIC) | Not Internally Connected | No internal connection; no electrical function. |
| Pin 4 (GND) | Ground Reference | Primary ground return path; must connect to clean analog ground plane with low-inductance trace. |
| Pin 5 (NIC) | Not Internally Connected | No internal connection; no electrical function. |
| Pin 6 (VOUT) | Reference Output | Delivers regulated 5.000 V; requires 0.1 µF to 100 µF ceramic output capacitor for stability. |
| Pin 7 (NIC) | Not Internally Connected | No internal connection; no electrical function. |
| Pin 8 (DNC) | Do Not Connect | Must remain unconnected; solder mask coverage recommended to prevent accidental shorts. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow 0.1–10 Hz noise | 2.8 μV p-p enables sub-LSB accuracy in 24-bit precision data loggers and weigh scales. |
| Low thermal hysteresis | −13 ppm full-cycle hysteresis (25°C→125°C→−40°C→25°C) maintains calibration integrity after environmental stress. |
| High-grade tempco option | B grade's 2 ppm/°C (−40°C to +125°C) meets stringent requirements for automotive battery monitors and downhole sensors. |
| AEC-Q100 qualified variant | ADR4550W (SOIC) is AEC-Q100 Grade 1 qualified; ADR4550ARZ-R7 is industrial-grade but shares same core design and SOIC-8 footprint. |
| Robust ESD protection | 6 kV HBM rating reduces risk of handling damage during SMT assembly and board test. |
Applications
| Automotive Battery Monitoring | Precision Data Acquisition |
|---|---|
|
Use Scenario: Real-time measurement of 12 V lead-acid or 48 V Li-ion battery pack voltage and state-of-charge under engine cranking and thermal cycling. IC Role / Device Role / Timing Role: Provides stable 5.000 V reference for 16-bit ADCs sampling battery cell voltages and shunt-based current sense signals. Use Value: 2 ppm/°C tempco and 8 ppm long-term drift ensure <±0.1% voltage reading accuracy over vehicle lifetime without recalibration. |
Use Scenario: High-fidelity sensor signal conditioning in portable gas analyzers and seismic data recorders requiring >110 dB SNR. IC Role / Device Role / Timing Role: Supplies ultra-low-noise reference to sigma-delta ADCs digitizing thermocouple, strain gauge, and RTD outputs. Use Value: 2.8 μV p-p (0.1–10 Hz) noise floor prevents degradation of effective resolution below 22 bits in DC-coupled front ends. |
| Industrial Process Control | Medical Diagnostic Equipment |
|
Use Scenario: 4–20 mA loop-powered transmitters measuring pressure, flow, and level in hazardous-area refineries and chemical plants. IC Role / Device Role / Timing Role: Generates precise excitation voltage for bridge sensors and reference for 24-bit ADCs interfacing with HART modems. Use Value: 950 μA quiescent current and 300 mV dropout enable operation within tight 3.6 V headroom constraints of loop-powered designs. |
Use Scenario: ECG and EEG signal digitization in portable patient monitors where baseline stability and low-frequency artifact rejection are critical. IC Role / Device Role / Timing Role: Supplies reference for simultaneous-sampling ADCs capturing biopotential waveforms with sub-microvolt resolution. Use Value: Low 1.6 ppm thermal hysteresis and 8 ppm 4500-hour drift preserve diagnostic accuracy across repeated sterilization and clinical use cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR445BRZ | 5.0 V output, 3 ppm/°C max tempco (−40°C to +125°C), higher 4.5 μV p-p noise, 1.2 mA IQ | Higher noise and current limit it to 16-bit systems; lacks AEC-Q100 qualification path | Choose when cost sensitivity outweighs ultralow-noise requirement and AEC-Q100 is not mandated. |
| REF5050AIDR | 5.0 V output, 3 ppm/°C max tempco, 3.5 μV p-p noise, 950 μA IQ, SOIC-8, TI's precision series | Similar noise and current specs but higher 10 ppm typical long-term drift (vs. 8 ppm for ADR4550ARZ-R7) | Prefer for TI-centric BOMs or where established qualification history with REF5050AIDR exists. |
Compared with ADR4550ARZ-R7, ADR445BRZ trades noise and drift performance for lower cost, while REF5050AIDR matches quiescent current and package but exhibits higher long-term drift - making ADR4550ARZ-R7 optimal for applications demanding both ultralow noise and proven 4500-hour stability.
Availability
ADR4550ARZ-R7 is available at Aetrix Electronics and suitable for precision data acquisition systems, automotive battery monitoring, and medical diagnostic equipment requiring stable component supply with guaranteed long-term availability and full traceability.
Supply support for ADR4550ARZ-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, automotive, communications, and healthcare markets since 1965.
The ADR45xx family was designed specifically for ultraprecision voltage reference needs in high-resolution data converters and safety-critical instrumentation, emphasizing low noise, low drift, and robust thermal behavior over extended temperature ranges.
FAQ
What is the maximum operating temperature range for the ADR4550ARZ-R7?
The ADR4550ARZ-R7 operates from −40°C to +125°C for B and A grade versions. The ADR4550ARZ-R7 part number corresponds to the B grade, which is fully specified across this extended industrial temperature range per the datasheet's ADR4550 Electrical Characteristics table.
Does the ADR4550ARZ-R7 support remote sensing?
No, the ADR4550ARZ-R7 in SOIC-8 package does not support remote sensing. Remote sense capability (VOUTSENSE/VOUTFORCE/GNDFORCE/GNDSENSE) is exclusive to the LCC package variants (e.g., ADR4550DCKZ-R7); the SOIC version uses single-point GND and VOUT connections as confirmed in Table 9 of the datasheet.
What is the minimum input voltage required for the ADR4550ARZ-R7 to regulate at 5.000 V?
The ADR4550ARZ-R7 requires a minimum input voltage of 5.1 V to maintain regulation at 5.000 V output, as specified in the ADR4550 Electrical Characteristics table (VIN min = 5.1 V). This accounts for its 300 mV dropout at 2 mA load and ensures stable operation across temperature and line variations.
Can the ADR4550ARZ-R7 drive a 10 kΩ load directly?
Yes, the ADR4550ARZ-R7 can drive a 10 kΩ load directly: at 5.000 V output, this draws only 0.5 mA, well within its ±10 mA sourcing/sinking capability. Load regulation is specified at ±80 ppm/mA, so error remains under ±40 ppm - negligible for most 16-bit applications.
Is the ADR4550ARZ-R7 RoHS compliant and halogen-free?
Yes, the ADR4550ARZ-R7 is RoHS compliant and halogen-free, as confirmed by Analog Devices' official product change notices and material declarations. Its SOIC-8 package (ARZ designation) meets JEDEC J-STD-609 Class 1 moisture sensitivity and IPC/JEDEC J-STD-020 reflow profiles.
ADR4550ARZ-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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.04%
- Temperature Coefficient:
- 4ppm/°C
- Noise - 0.1Hz to 10Hz:
- 2.8µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 5.1V ~ 15V
- Current - Supply:
- 950µA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADR4550ARZ-R7 FAQ
1.How can I place an order for ADR4550ARZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR4550ARZ-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 ADR4550ARZ-R7 reliable?
The price and inventory of ADR4550ARZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR4550ARZ-R7 is usually 5 days.
3.What payment methods are accepted for ADR4550ARZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR4550ARZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR4550ARZ-R7?
ADR4550ARZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR4550ARZ-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 ADR4550ARZ-R7?
For technical support, including ADR4550ARZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR4550ARZ-R7 requirements.
6.How does Aetrix verify that ADR4550ARZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADR4550ARZ-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 ADR4550ARZ-R7 meets industry standards.
7.What is the process for return or replacement of ADR4550ARZ-R7?
All ADR4550ARZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADR4550ARZ-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 ADR4550ARZ-R7 part is unused and in its original packaging.
Return procedure for ADR4550ARZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADR4550ARZ-R7 Tags
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