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Analog Devices Inc. ADR02BKS-R2
- Part No.:
- ADR02BKS-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
ADR02BKS-R2.pdf
- Description:
- IC VREF SERIES PREC 5V SC-70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,214
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Product details
Overview
ADR02BKS-R2 from Analog Devices is a precision 5.0 V band gap voltage reference in a 5-lead SC70 package, featuring ±0.1% initial accuracy, 9 ppm/°C max temperature coefficient (B grade), and 10 µVp-p (0.1 Hz to 10 Hz) low-noise output. It operates from 7.0 V to 36.0 V input, delivers up to 10 mA, and supports industrial temperature range (−40°C to +125°C). It is used in high-resolution ADC/DAC biasing and precision current source circuits.
For engineers reviewing the ADR02BKS-R2 datasheet, ADR02BKS-R2 pinout, ADR02BKS-R2 application, or ADR02BKS-R2 equivalent, key selection criteria include output stability under load and line variation, thermal drift performance in compact layouts, noise sensitivity in signal-chain front-ends, and compatibility with space-constrained PCBs requiring ultracompact SC70 packaging.
Technical Context
The ADR02BKS-R2 implements a trimmed band gap core with internal temperature compensation and a dedicated TEMP pin for external temperature monitoring (550 mV baseline, 1.96 mV/°C sensitivity). Its TRIM pin enables fine output adjustment via external resistor network, supporting precision calibration in production test.
Designed for wide-input operation, it maintains regulation down to 7.0 V supply while delivering stable 5.0 V output with 2 V dropout margin. The SC70 package imposes thermal constraints (θJA = 376°C/W), requiring careful PCB copper area management for sustained 10 mA loads at high ambient temperatures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.000 V ±5 mV (±0.1%) at 25°C - ensures direct compatibility with 5 V logic and SAR ADC reference inputs. |
| Tempco (B grade) | ≤9 ppm/°C over −40°C to +125°C - limits full-range drift to ≤1.13 mV, critical for uncalibrated industrial sensors. |
| Voltage Noise | 10 µVp-p, 0.1 Hz–10 Hz - avoids LSB errors in 18-bit+ data acquisition systems sampling below 10 Hz. |
| Load Regulation | ≤70 ppm/mA (40–70 ppm/mA) - holds output within ±0.35 mV across 0–10 mA load, enabling stable current-source setpoints. |
| Supply Range | 7.0 V to 36.0 V - supports direct connection to automotive battery rails (9–16 V) and industrial 24 V systems without pre-regulation. |
| Quiescent Current | 0.65–1.0 mA - allows use in low-power portable instruments where standby current must stay below 1 mA. |
| Dropout Voltage | 2.0 V - requires minimum 7.0 V input to sustain 5.0 V output, defining lower bound for input rail design. |
Pinout & Package
ADR02BKS-R2 is housed in a 5-lead SC70 (KS-5) surface-mount package, measuring 2.0 mm × 2.1 mm × 0.9 mm, optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Positive Supply Input | Accepts 7.0–36.0 V; internal regulator draws 0.65–1.0 mA quiescent current. |
| 2 (GND) | Analog Ground Reference | Must be connected to clean system ground plane; shares return path with TEMP and TRIM. |
| 3 (VOUT) | Precision Output Terminal | Delivers regulated 5.000 V ±5 mV; capable of sourcing up to 10 mA into resistive loads. |
| 4 (TRIM) | Output Voltage Adjustment Node | Connects to external resistor divider for ±0.5% fine-tuning; high-impedance input (≥1 MΩ). |
| 5 (TEMP) | Temperature Sensor Output | Provides 550 mV @ 25°C with 1.96 mV/°C slope; used for on-board thermal compensation or diagnostics. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Stable operation with no input or output capacitance needed - simplifies layout and eliminates capacitor aging/tolerance risks. |
| Ultracompact SC70 footprint | 2.0 mm × 2.1 mm body size - enables placement adjacent to high-resolution ADCs or op-amps in space-limited modules. |
| Dedicated TEMP pin | Monitors die temperature with 550 mV baseline and 1.96 mV/°C linearity - supports real-time thermal derating or calibration correction. |
| TRIM pin for output calibration | Allows post-assembly adjustment of VOUT within ±0.5% using two external resistors - reduces test-time trimming cost. |
| High output current capability | 10 mA continuous sourcing - drives multiple op-amp references or feeds DAC reference inputs without buffering. |
Applications
| Industrial Process Transmitter | Precision Data Acquisition |
|---|---|
Use Scenario: 4 mA to 20 mA loop-powered sensor transmitter operating from 12–24 V supply in factory automation cabinets. IC Role / Device Role / Timing Role: Provides stable 5.0 V reference for DAC and signal conditioning circuitry, enabling accurate current-loop scaling. Use Value: Maintains <±0.1% output accuracy across −40°C to +85°C ambient, ensuring field calibration validity over equipment lifetime. |
Use Scenario: Portable 24-bit sigma-delta ADC module for vibration monitoring in predictive maintenance handheld tools. IC Role / Device Role / Timing Role: Supplies ultra-low-noise 5.0 V reference to ADC's analog front-end, minimizing quantization uncertainty. Use Value: 10 µVp-p (0.1–10 Hz) noise contributes <0.1 LSB error in 24-bit conversion, preserving dynamic range. |
| Auto Battery Monitoring System | PCMCIA Card Power Management |
Use Scenario: In-vehicle battery voltage and state-of-charge monitor interfacing directly to 12 V lead-acid or LiFePO₄ battery terminals. IC Role / Device Role / Timing Role: Generates precise 5.0 V rail for microcontroller ADC and supervisor ICs, rejecting ripple from alternator switching noise. Use Value: −75 dB ripple rejection at 10 kHz suppresses alternator harmonics, preventing false low-battery alerts. |
Use Scenario: Legacy PCMCIA card with embedded analog I/O requiring stable reference during hot-plug insertion and variable host power conditions. IC Role / Device Role / Timing Role: Serves as primary voltage reference for on-card ADCs and level translators, surviving transient supply dips. Use Value: Operates down to 7.0 V input and sustains regulation during 100 ms brownouts common in PCMCIA slot power sequencing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR02AKS-R2 | Same SC70 package and pinout; A grade offers tighter tempco (3 ppm/°C typ vs. 9 ppm/°C max) and improved initial accuracy (±0.05%). | Better suited for metrology-grade instruments requiring sub-ppm stability; higher cost and longer lead time. | Select ADR02AKS-R2 when full-temperature-range drift must stay below 0.4 ppm/°C or when calibration intervals exceed 12 months. |
| REF02CSZ-REEL7 | SOIC-8 package (larger footprint); 5.0 V output, ±0.2% initial accuracy, 25 ppm/°C max tempco; no TEMP or TRIM pins. | Lacks on-chip temperature sensing and output trim; simpler interface but less flexible for field calibration. | Choose REF02CSZ-REEL7 only if board space permits SOIC-8 and thermal monitoring/calibration features are unnecessary. |
Compared with ADR02BKS-R2, the ADR02AKS-R2 improves long-term stability and thermal drift at higher cost, while the REF02CSZ-REEL7 sacrifices trim and temperature sensing for lower unit price and broader distributor availability - making ADR02BKS-R2 the optimal balance of precision, flexibility, and compactness for mid-tier industrial designs.
Availability
ADR02BKS-R2 is available at Aetrix Electronics and suitable for precision data acquisition systems, industrial process transmitters, and automotive battery monitors requiring stable component supply with guaranteed long-term continuity.
Supply support for ADR02BKS-R2 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, with design centers worldwide.
The ADR02 series belongs to Analog Devices' precision voltage reference product line, engineered specifically for applications demanding low drift, low noise, and small form factor in harsh industrial and automotive environments.
FAQ
What is the maximum load current supported by the ADR02BKS-R2?
The ADR02BKS-R2 delivers up to 10 mA of continuous output current while maintaining specified accuracy and regulation. At full 10 mA load, dropout remains within 2.0 V, and load regulation stays ≤70 ppm/mA - meaning output deviation stays within ±0.35 mV across the full load range. Exceeding 10 mA may cause thermal overload or output collapse.
Does the ADR02BKS-R2 require an input or output capacitor for stability?
No, the ADR02BKS-R2 is internally compensated and operates stably without any input or output capacitors. This eliminates capacitor-related failures, aging effects, and layout sensitivity - a key advantage in high-reliability or miniaturized designs. However, adding a 0.1 µF ceramic capacitor at VIN can improve high-frequency ripple rejection.
How is the TEMP pin on the ADR02BKS-R2 used in practice?
The TEMP pin on the ADR02BKS-R2 outputs 550 mV at 25°C with a linear 1.96 mV/°C slope, enabling direct measurement of die temperature. It is commonly routed to an ADC input for real-time thermal monitoring or used in software-based gain/offset correction algorithms. No external components are needed, though a 10 nF capacitor to ground improves noise immunity.
Can the ADR02BKS-R2 replace the REF02 in an existing SOIC-8 design?
No - the ADR02BKS-R2 uses a 5-lead SC70 package and is not pin-compatible with the 8-lead SOIC REF02. While both provide 5.0 V references, ADR02BKS-R2 has additional TRIM and TEMP pins and different pin assignments. A redesign is required to accommodate the smaller footprint and updated pin functions.
What is the long-term stability specification for the ADR02BKS-R2?
The ADR02BKS-R2 exhibits 50 ppm typical long-term stability over 1000 hours of operation - defined as noncumulative drift in the first 1000-hour period. Subsequent 1000-hour intervals show significantly lower drift. This metric reflects silicon-level aging behavior and is measured under constant bias at 125°C, not accelerated life testing.
ADR02BKS-R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Reference Type:
- -
- Output Type:
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Tolerance:
- -
- Temperature Coefficient:
- -
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
ADR02BKS-R2 FAQ
1.How can I place an order for ADR02BKS-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADR02BKS-R2 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 ADR02BKS-R2 reliable?
The price and inventory of ADR02BKS-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADR02BKS-R2 is usually 5 days.
3.What payment methods are accepted for ADR02BKS-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADR02BKS-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADR02BKS-R2?
ADR02BKS-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADR02BKS-R2 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 ADR02BKS-R2?
For technical support, including ADR02BKS-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADR02BKS-R2 requirements.
6.How does Aetrix verify that ADR02BKS-R2 is sourced from the original manufacturer or authorized distributors?
All ADR02BKS-R2 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 ADR02BKS-R2 meets industry standards.
7.What is the process for return or replacement of ADR02BKS-R2?
All ADR02BKS-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADR02BKS-R2, 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 ADR02BKS-R2 part is unused and in its original packaging.
Return procedure for ADR02BKS-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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