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Analog Devices Inc. ADR03BRZ-REEL7
- Part No.:
- ADR03BRZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADR03BRZ-REEL7.pdf
- Description:
- IC VREF SERIES 0.1% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:823
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Product details
Overview
ADR03BRZ-REEL7 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 (A grade, SOIC), 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 instrumentation.
For engineers reviewing the ADR03BRZ-REEL7 datasheet, ADR03BRZ-REEL7 pinout, ADR03BRZ-REEL7 application, or ADR03BRZ-REEL7 equivalent, key selection criteria include its 2.5 V output stability under varying load (25–70 ppm/mA), dropout voltage of 2 V, quiescent current of 0.65–1 mA, and integrated TEMP pin for temperature monitoring at 1.96 mV/°C sensitivity.
Technical Context
The ADR03BRZ-REEL7 implements a band gap reference core with on-chip trimming and a dedicated TEMP terminal for external temperature sensing. Its TRIM pin enables fine adjustment of output voltage, while internal circuitry ensures stable regulation across wide input voltage (4.5 V–36 V) and load (0–10 mA) ranges.
Designed for space-constrained systems, it uses an 8-lead SOIC package with pin-compatible layout to REF03. The device features no external capacitor requirement, 75 dB ripple rejection at 10 kHz, and 50 ppm long-term stability over 1000 hours - all specified across −40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V ±5 mV (±0.2%) - provides precise 2.5 V reference for 16-bit+ ADCs without calibration. |
| Initial Accuracy | ±0.1% (±2.5 mV) - enables single-supply 2.5 V system designs without post-manufacturing trimming. |
| Temp Coefficient | 3 ppm/°C typical (A grade, SOIC) - ensures ≤ ±0.0375% output drift over −40°C to +125°C. |
| Noise (0.1–10 Hz) | 5 µVp-p - minimizes quantization error in precision data acquisition systems. |
| Supply Range | 4.5 V to 36 V - supports operation directly from unregulated industrial rails or automotive batteries. |
| Output Current | 10 mA - drives ADC reference inputs, op-amp bias networks, and small DAC loads without buffering. |
| Quiescent Current | 0.65–1 mA - enables low-power portable instrumentation and battery-backed sensor nodes. |
Pinout & Package
ADR03BRZ-REEL7 is housed in an 8-lead SOIC (R-8) package with standard surface-mount footprint (5.0 mm × 6.2 mm, 1.27 mm pitch). Pin functions are validated per Figure 2 of Rev. S datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 4.5 V–36 V; dropout voltage is 2 V - requires ≥4.5 V input for regulated 2.5 V output. |
| VOUT | Reference voltage output | Delivers stable 2.5 V ±5 mV; capable of sourcing/sinking up to 10 mA with <70 ppm/mA load regulation. |
| GND | Analog ground reference | Return path for reference current and TEMP/ TRIM circuits; must be low-impedance for noise control. |
| TRIM | Voltage adjustment node | Allows ±0.5% output fine-tuning via external resistor divider; used for system-level calibration. |
| TEMP | Temperature sensor output | Provides 550 mV @ 25°C with 1.96 mV/°C slope - enables on-board thermal monitoring without extra IC. |
| NIC (Pins 3, 6, 7) | No internal connection | Unbonded pins; must remain unconnected - no routing or grounding required. |
Key Features
| Feature | Design Value |
|---|---|
| Ultracompact SOIC packaging | 8-lead SOIC (R-8) footprint compatible with REF03 - enables drop-in upgrade in legacy designs. |
| Integrated temperature sensing | TEMP pin outputs calibrated analog voltage (550 mV ±20 mV @ 25°C, 1.96 mV/°C) - eliminates discrete sensor in thermal-aware systems. |
| No external capacitor required | Stable operation with no input or output capacitance - simplifies layout and reduces BOM count in space-limited PCBs. |
| High PSRR | 75 dB ripple rejection at 10 kHz - maintains reference integrity in noisy switch-mode power supply environments. |
| Automotive-grade option | A grade SOIC version qualified per AEC-Q200 - suitable for engine control, battery monitoring, and ADAS subsystems. |
Applications
| Precision Data Acquisition | Industrial Process Control |
|---|---|
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, establishing absolute measurement scale. Use Value: 3 ppm/°C tempco and 5 µVp-p noise ensure <±1 LSB error over full industrial temperature range. |
Use Scenario: Sensor signal conditioning in distributed I/O systems with 4–20 mA loop transmitters. IC Role / Device Role / Timing Role: Stable excitation source for RTD/bridge sensors and reference for current-output DACs. Use Value: 10 mA drive capability and 4.5 V min input allow direct use with 24 V loop supplies without LDO pre-regulation. |
| Precision Instruments | Auto Battery Monitoring |
Use Scenario: Digital multimeter (DMM) reference subsystem requiring traceable 2.5 V基准 for autoranging. IC Role / Device Role / Timing Role: Master reference for dual-slope and successive-approximation ADC architectures. Use Value: ±0.1% initial accuracy and 50 ppm long-term stability eliminate field recalibration for 1-year specifications. |
Use Scenario: Onboard diagnostics module measuring 12 V lead-acid battery voltage with ±10 mV accuracy. IC Role / Device Role / Timing Role: Reference for microcontroller ADC sampling battery voltage through resistive divider. Use Value: Wide 4.5–36 V supply range accommodates cold-crank (≈6 V) to load-dump (≈35 V) transients without protection circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF03GSZ-REEL | Same 2.5 V output, ±0.2% initial accuracy, 25 ppm/°C max tempco (SOIC), no TEMP pin. | Lacks integrated temperature sensing; lower accuracy grade; not qualified for automotive. | Select when TEMP functionality is unnecessary and cost sensitivity outweighs long-term stability requirements. |
| ADR03ARZ-REEL7 | Same 2.5 V output, identical pinout/package, but A grade (3 ppm/°C typ) vs. B grade (1–3 ppm/°C) - tighter tempco spec. | Higher initial accuracy (±0.05% vs. ±0.1%) and improved long-term stability (50 ppm vs. same). | Choose for metrology-grade systems where thermal drift budget is sub-0.01% over temperature. |
Compared with REF03GSZ-REEL, ADR03BRZ-REEL7 adds temperature monitoring and tighter tempco; compared with ADR03ARZ-REEL7, it trades minor accuracy/tempco margin for cost optimization in industrial-grade instrumentation.
Availability
ADR03BRZ-REEL7 is available at Aetrix Electronics and suitable for precision data acquisition systems, industrial process control modules, and automotive battery monitoring circuits requiring stable component supply across extended temperature and voltage ranges.
Supply support for ADR03BRZ-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, Inc. is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control.
The ADR03 series belongs to Analog Devices' precision voltage reference product line, engineered for high-accuracy, low-drift applications in industrial, instrumentation, and automotive systems where reference stability directly impacts measurement fidelity.
FAQ
What is the output voltage tolerance of the ADR03BRZ-REEL7 at room temperature?
The ADR03BRZ-REEL7 has a nominal output voltage of 2.500 V with a minimum of 2.495 V and maximum of 2.505 V at 25°C (B grade), corresponding to ±0.2% initial accuracy. This is confirmed in Table 4 of the Rev. S datasheet under "OUTPUT VOLTAGE" for B grades.
Does the ADR03BRZ-REEL7 require external capacitors for stability?
No, the ADR03BRZ-REEL7 is designed for unconditional stability with no external input or output capacitors required. This is explicitly stated in the FEATURES section and verified in the Applications Information section (Page 16), enabling simplified layout in compact PCB designs.
What is the function of the TEMP pin on the ADR03BRZ-REEL7?
The TEMP pin on the ADR03BRZ-REEL7 outputs a calibrated analog voltage of 550 mV at 25°C with a temperature coefficient of 1.96 mV/°C. It enables direct on-die temperature monitoring without additional sensors - detailed in the "TEMPERATURE SENSOR" subsection of Table 4 (Page 6).
Can the ADR03BRZ-REEL7 replace the REF03 in existing designs?
Yes - the ADR03BRZ-REEL7 is pin-to-pin compatible with the REF03 in 8-lead SOIC packages and offers enhanced features including the TEMP pin and improved temperature coefficient (3 ppm/°C typical vs. 25 ppm/°C max for REF03). Compatibility is documented in the General Description and Table 1.
What is the maximum load current the ADR03BRZ-REEL7 can drive reliably?
The ADR03BRZ-REEL7 is rated for continuous output current up to 10 mA, with load regulation specified from 0 mA to 10 mA. Performance remains within 70 ppm/mA across −40°C to +125°C, as confirmed in Table 4 under "LOAD REGULATION" with VIN = 7.0 V.
ADR03BRZ-REEL7 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):
- 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-REEL7 FAQ
1.How can I place an order for ADR03BRZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR03BRZ-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 ADR03BRZ-REEL7 reliable?
The price and inventory of ADR03BRZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR03BRZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADR03BRZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR03BRZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR03BRZ-REEL7?
ADR03BRZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR03BRZ-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 ADR03BRZ-REEL7?
For technical support, including ADR03BRZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR03BRZ-REEL7 requirements.
6.How does Aetrix verify that ADR03BRZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADR03BRZ-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 ADR03BRZ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADR03BRZ-REEL7?
All ADR03BRZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADR03BRZ-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 ADR03BRZ-REEL7 part is unused and in its original packaging.
Return procedure for ADR03BRZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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