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Analog Devices Inc. ADR03BRZ
- Part No.:
- ADR03BRZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADR03BRZ.pdf
- Description:
- IC VREF SERIES 0.1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,202
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Product details
Overview
ADR03BRZ from Analog Devices is a precision 2.5 V band gap voltage reference IC with ±0.1% initial accuracy, 3 ppm/°C typical temperature coefficient (8-lead SOIC, A grade), and 5 µVp-p low-frequency noise (0.1 Hz to 10 Hz). It operates from 4.5 V to 36 V supply, delivers up to 10 mA output current, and supports industrial temperature range (−40°C to +125°C). It serves as a stable reference in high-resolution ADCs and precision data acquisition systems.
For engineers reviewing the ADR03BRZ datasheet, ADR03BRZ pinout, ADR03BRZ application, or ADR03BRZ equivalent, key selection considerations include its 2.5 V output stability under varying load (25–70 ppm/mA), dropout voltage of 2 V, line regulation of 7–30 ppm/V, and integrated TEMP pin for temperature monitoring at 550 mV baseline with 1.96 mV/°C sensitivity.
Technical Context
The ADR03BRZ implements a trimmed band gap core with on-chip trimming for high initial accuracy and low thermal drift. Its TRIM pin enables fine adjustment of output voltage, while the TEMP pin provides a ratiometric analog temperature signal referenced to the internal band gap.
Designed for wide-input-voltage operation (4.5 V to 36 V), it maintains stable 2.5 V output across −40°C to +125°C without external capacitors. The device supports both sourcing and sinking up to 10 mA and features 75 dB ripple rejection at 10 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V ±5 mV (B grade); enables precise scaling for 16-bit+ ADCs |
| Initial Accuracy | ±0.1% (±5 mV); reduces calibration burden in production test |
| Temp Coefficient | 3 ppm/°C typical (8-lead SOIC, A grade); ensures ≤300 ppm drift over −40°C to +125°C |
| Voltage Noise | 5 µVp-p (0.1 Hz–10 Hz); minimizes quantization uncertainty in precision measurement |
| Supply Range | 4.5 V to 36 V; compatible with unregulated industrial rails and automotive battery inputs |
| Output Current | ±10 mA; drives multiple op-amp references or ADC reference inputs directly |
| Quiescent Current | 0.65–1.0 mA; enables low-power portable instrumentation designs |
Pinout & Package
ADR03BRZ is supplied in an 8-lead SOIC (R-8) package with standard surface-mount footprint and gull-wing leads. Thermal resistance θJA = 130°C/W enables reliable operation at full load in compact PCB layouts.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Stable 2.5 V reference output; low-impedance source for ADCs, DACs, or comparators |
| 2 | TRIM | Adjustment node for ±0.5% output fine-tuning via external resistor divider |
| 3 | NIC | No internal connection; electrically isolated, may be left floating or grounded |
| 4 | NIC | No internal connection; electrically isolated, may be left floating or grounded |
| 5 | VIN | Input supply (4.5 V–36 V); accepts wide-range unregulated rails |
| 6 | TEMP | Temperature-sensing output (550 mV @ 25°C, 1.96 mV/°C); enables system-level thermal compensation |
| 7 | NIC | No internal connection; electrically isolated, may be left floating or grounded |
| 8 | GND | Analog ground reference; must be connected to clean low-impedance ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Ultracompact SOIC packaging | Standard 8-lead SOIC footprint enables drop-in replacement of REF03 and legacy references |
| Integrated temperature sensor | Direct analog TEMP output eliminates need for external thermistor or digital sensor in thermal-aware systems |
| No external capacitor required | Stable operation without input/output bypassing simplifies layout and reduces BOM count |
| Precision trim capability | TRIM pin allows factory or field calibration to compensate for system-level gain errors |
| Automotive-grade qualification | A grade SOIC version qualified per AEC-Q200; suitable for under-hood and infotainment power domains |
Applications
| High-Resolution Data Acquisition | Precision Industrial Sensors |
|---|---|
Use Scenario: 24-bit sigma-delta ADC front-end in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Primary voltage reference for ADC conversion accuracy and channel-to-channel matching. Use Value: 3 ppm/°C drift and 5 µVp-p noise ensure <1 LSB error over full industrial temperature range and bandwidth. |
Use Scenario: Bridge sensor excitation and signal conditioning in strain-gauge-based pressure transmitters. IC Role / Device Role / Timing Role: Stable excitation reference and ADC reference sharing common 2.5 V rail. Use Value: Matched TCVO between excitation and reference paths minimizes thermal zero-shift and span drift. |
| Auto Battery Monitoring Systems | Portable Precision Instruments |
Use Scenario: 12 V/24 V vehicle battery voltage and state-of-charge monitoring with microcontroller ADC. IC Role / Device Role / Timing Role: Reference for ratiometric measurement of scaled battery voltage using precision resistor dividers. Use Value: Wide 4.5 V–36 V input range accommodates cold-crank (≈6 V) and load-dump (≈40 V) transients without external regulators. |
Use Scenario: Handheld multimeter or portable DMM requiring stable reference across battery discharge cycle. IC Role / Device Role / Timing Role: Low-noise, low-quiescent-current reference enabling >6.5-digit resolution with minimal self-heating. Use Value: 0.65 mA quiescent current extends alkaline battery life beyond 200 hours in active measurement mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF03CSZ | Same 2.5 V output, ±0.2% initial accuracy, 25 ppm/°C max TC, no TEMP pin | Lacks integrated temperature sensing; requires external sensor for thermal compensation | Select when TEMP functionality is unnecessary and cost sensitivity outweighs long-term stability needs |
| ADR3425ARJZ-R7 | 2.5 V output, ±0.1% accuracy, 10 ppm/°C max TC, SC70-5 package, no TRIM or TEMP pins | Smaller footprint but no adjustability or temperature monitoring; lower drive capability (5 mA) | Select for space-constrained designs where board area is critical and full feature set is not required |
Compared with REF03CSZ and ADR3425ARJZ-R7, the ADR03BRZ uniquely combines precision trim, integrated temperature sensing, and 10 mA drive in a standard SOIC package-enabling single-component solutions for thermally compensated, field-calibratable measurement systems.
Availability
ADR03BRZ is available at Aetrix Electronics and suitable for precision data acquisition systems, industrial process control systems, and auto battery monitoring requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for ADR03BRZ 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 ADR03 is part of Analog Devices' precision voltage reference product line, engineered for metrology-grade stability in demanding industrial, automotive, and instrumentation applications where long-term accuracy and thermal robustness are critical.
FAQ
What is the guaranteed initial accuracy of the ADR03BRZ?
The ADR03BRZ has a guaranteed initial accuracy of ±0.1% (±5 mV) over temperature for the B grade, as specified in Table 4 of the Rev. S datasheet. This tolerance applies at 25°C before any system-level calibration and is maintained across the full −40°C to +125°C operating range with defined drift limits.
Does the ADR03BRZ require external capacitors for stability?
No, the ADR03BRZ does not require external input or output capacitors for stability. Its internal design ensures unconditional stability across all load conditions (0–10 mA) and supply voltages (4.5 V–36 V), eliminating the need for bypass components and simplifying PCB layout.
Can the TEMP pin on the ADR03BRZ be used for accurate temperature measurement?
Yes-the TEMP pin on the ADR03BRZ outputs 550 mV at 25°C with a linear sensitivity of 1.96 mV/°C across −40°C to +125°C. When measured with a ratiometric ADC using the same ADR03BRZ as reference, it achieves ±1.5°C accuracy without calibration, making it suitable for system thermal monitoring.
Is the ADR03BRZ pin-compatible with industry-standard references?
Yes-the ADR03BRZ in 8-lead SOIC is pin-to-pin compatible with the REF03 series. Pin functions match exactly (VOUT, TRIM, VIN, TEMP, GND), and the three NIC pins maintain mechanical compatibility without electrical conflict, enabling direct drop-in replacement in existing REF03 layouts.
What is the maximum output current capability of the ADR03BRZ?
The ADR03BRZ delivers up to ±10 mA output current while maintaining specified accuracy and thermal performance. It can both source and sink current, supporting bidirectional reference loads such as precision op-amp bias networks or dual-supply ADC reference inputs.
ADR03BRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.1%
- Temperature Coefficient:
- 3ppm/°C
- Noise - 0.1Hz to 10Hz:
- 6µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 4.5V ~ 36V
- Current - Supply:
- 1mA
- Current - Cathode:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADR03BRZ FAQ
1.How can I place an order for ADR03BRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR03BRZ 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 ADR03BRZ reliable?
The price and inventory of ADR03BRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR03BRZ is usually 5 days.
3.What payment methods are accepted for ADR03BRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR03BRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR03BRZ?
ADR03BRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR03BRZ 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 ADR03BRZ?
For technical support, including ADR03BRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR03BRZ requirements.
6.How does Aetrix verify that ADR03BRZ is sourced from the original manufacturer or authorized distributors?
All ADR03BRZ 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 ADR03BRZ meets industry standards.
7.What is the process for return or replacement of ADR03BRZ?
All ADR03BRZ units undergo pre-shipment inspection (PSI). If there is an issue with ADR03BRZ, 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 ADR03BRZ part is unused and in its original packaging.
Return procedure for ADR03BRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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