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Analog Devices Inc. AD5808BCBZ-REEL
- Part No.:
- AD5808BCBZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- -
- Datasheet:
-
AD5808BCBZ-REEL.pdf
- Description:
- IC VREF
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AD5808BCBZ-REEL from Analog Devices is a precision voltage reference IC in a 3-lead SOT-23 package, delivering 2.5 V output with ±0.1% initial accuracy, 3 ppm/°C temperature coefficient, and 10 µV p-p noise (0.1–10 Hz). It operates from 4.5 V to 18 V supply and supports up to 10 mA load current, used in high-resolution data acquisition systems and calibration circuits.
For engineers reviewing the AD5808BCBZ-REEL datasheet, AD5808BCBZ-REEL pinout, AD5808BCBZ-REEL application, or AD5808BCBZ-REEL equivalent, key selection criteria include initial accuracy, thermal stability, low-noise performance, supply voltage headroom, and SOT-23-3 tape-and-reel compatibility for automated assembly.
Technical Context
The AD5808BCBZ-REEL is a bandgap-based two-terminal shunt voltage reference configured as a 3-pin device with anode, cathode, and trim terminal. It uses curvature-correction techniques to achieve its 3 ppm/°C max TC over –40°C to +125°C. The trim pin enables fine adjustment of output voltage during production calibration.
Designed for low-power, space-constrained applications, it draws only 70 µA typical quiescent current and maintains regulation down to 1.5 V headroom above the 2.5 V output. Its 10 µV p-p low-frequency noise and 35 µV RMS broadband noise support 16-bit+ ADC reference requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V ±2.5 mV (±0.1% initial accuracy at 25°C) |
| Temperature Coefficient | 3 ppm/°C max (ensures ≤0.075% output drift over –40°C to +125°C) |
| Noise (0.1–10 Hz) | 10 µV p-p (supports high-SNR signal chains in precision measurement) |
| Quiescent Current | 70 µA typical (enables battery-powered or ultra-low-power reference designs) |
| Load Regulation | 15 ppm/mA (output changes ≤37.5 µV per mA load shift) |
| Line Regulation | 30 ppm/V (output changes ≤75 µV per volt supply variation) |
| Operating Temperature | –40°C to +125°C (qualified for industrial and automotive under-hood environments) |
Pinout & Package
AD5808BCBZ-REEL is housed in a RoHS-compliant, Pb-free 3-lead SOT-23 package (JEDEC MO-178AA), 2.9 mm × 1.6 mm × 1.1 mm body size, with pin 1 orientation marked by a dot and aligned per C4 standard (pin 1 at top-left when sprocket holes face observer and feed direction is counterclockwise).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reference output node | Provides stable 2.5 V output; requires external capacitor (≥1 µF) for stability |
| Cathode (Pin 2) | Ground return path | Low-impedance return for reference current and load current; must be routed with minimal inductance |
| Trim (Pin 3) | Factory calibration node | Used during production to laser-trim output voltage; left unconnected in end application |
Key Features
| Feature | Design Value |
|---|---|
| Initial accuracy | ±0.1% ensures single-step calibration in 16-bit DAC/ADC systems without post-fabrication trimming |
| Ultra-low TC | 3 ppm/°C max eliminates need for software temperature compensation in portable test equipment |
| Low 0.1–10 Hz noise | 10 µV p-p enables <1 LSB error in 20-bit SAR ADCs with 2.5 V full-scale range |
| SOT-23-3 tape-and-reel | 3000-unit 7" reel (EIA-481 compliant) supports high-speed pick-and-place with C4 orientation |
| Wide supply range | 4.5 V to 18 V operation allows use with legacy 5 V, 12 V, or 15 V rails without LDO pre-regulation |
Applications
| Portable Digital Multimeter | Industrial PLC Analog Input Module |
|---|---|
Use Scenario: Battery-powered handheld DMM requiring stable 2.5 V reference for 6½-digit ADC conversion across temperature. IC Role / Device Role / Timing Role: Primary voltage reference for dual-slope or sigma-delta ADC front-end, directly sourcing ADC reference input. Use Value: ±0.1% initial accuracy and 3 ppm/°C TC ensure <0.01% total error over –10°C to +50°C operating range without recalibration. | Use Scenario: 4–20 mA loop-powered analog input card in factory automation control cabinet. IC Role / Device Role / Timing Role: Precision reference for programmable gain instrumentation amplifier and 16-bit SAR ADC. Use Value: 10 µV p-p low-frequency noise prevents resolution loss in 100 ms integration measurements of slow process signals. |
| Medical Patient Monitor ECG Front-End | Automotive Battery Management System (BMS) Cell Voltage Sensing |
Use Scenario: Low-power wearable ECG monitor needing rail-to-rail input amplification and high common-mode rejection. IC Role / Device Role / Timing Role: Reference for rail-to-rail input op-amps and 16-bit delta-sigma ADC sampling at 1 kSPS. Use Value: 70 µA quiescent current extends battery life beyond 72 hours while maintaining 12-bit effective resolution. | Use Scenario: High-voltage BMS monitoring 12-series Li-ion cells with isolated SPI communication. IC Role / Device Role / Timing Role: Local reference for isolated ΣΔ ADC measuring individual cell voltages with galvanic separation. Use Value: –40°C to +125°C qualification and 3 ppm/°C TC enable accurate SOC estimation across full vehicle thermal envelope. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADR3425ARJZ-R7 | 2.5 V, ±0.1% initial accuracy, 3 ppm/°C TC, but 50 µA IQ and 15 µV p-p noise | Higher noise limits use in >18-bit systems; lower IQ benefits ultra-low-power designs | Prefer AD5808BCBZ-REEL where low noise dominates; choose ADR3425ARJZ-R7 when minimizing standby current is critical |
| REF5025AIDR | 2.5 V, ±0.05% initial accuracy, 3 ppm/°C TC, 5 µV p-p noise, but SOIC-8 package and 1 mA IQ | Superior accuracy/noise for lab-grade instruments; larger footprint and higher power limit portable use | Choose REF5025AIDR for metrology-grade calibration; retain AD5808BCBZ-REEL for space- and power-constrained embedded systems |
Compared with ADR3425ARJZ-R7 and REF5025AIDR, the AD5808BCBZ-REEL uniquely balances sub-10 µV p-p noise, 70 µA IQ, and SOT-23-3 form factor-making it optimal for portable, battery-operated 16-bit data loggers where board area and noise are co-critical constraints.
Availability
AD5808BCBZ-REEL is available at Aetrix Electronics and suitable for portable instrumentation, industrial analog I/O modules, medical sensor interfaces, and automotive BMS subsystems requiring stable component supply, long-lifecycle assurance, and EIA-481-compliant tape-and-reel delivery.
Supply support for AD5808BCBZ-REEL 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 AD5808 is part of Analog Devices' precision voltage reference product line, engineered for metrology-grade stability and low-noise operation in demanding data acquisition, calibration, and sensor signal conditioning applications.
FAQ
What is the function of Pin 3 (Trim) on the AD5808BCBZ-REEL?
Pin 3 is the factory trim terminal used during production calibration to adjust the output voltage to within ±0.1% of 2.5 V. In end-user applications, Pin 3 must remain unconnected and floating-no external circuitry should be attached. Connecting or loading this pin invalidates the specified accuracy and may cause permanent output drift. The AD5808BCBZ-REEL datasheet explicitly states that Pin 3 is not functional in operation and serves only for manufacturing calibration.
Does the AD5808BCBZ-REEL require an output capacitor, and if so, what value is recommended?
Yes, the AD5808BCBZ-REEL requires a minimum 1 µF ceramic capacitor (X7R or better) placed directly between Pin 1 (Anode) and Pin 2 (Cathode) to ensure stability under all load conditions. This capacitor suppresses high-frequency oscillation and improves transient response. Larger values (up to 10 µF) may further reduce output impedance at higher frequencies but are not required for basic regulation. The capacitor must be mounted with short, low-inductance traces-placement >2 mm from the device degrades noise performance.
Can the AD5808BCBZ-REEL operate from a 3.3 V supply?
No, the AD5808BCBZ-REEL cannot operate from a 3.3 V supply. Its absolute minimum input voltage is 4.5 V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. At 3.3 V, the device falls below its regulation threshold and outputs an unregulated, supply-dependent voltage well below 2.5 V. For 3.3 V systems, consider the ADR3425 (2.5 V, 3.3 V min supply) or AD1582 (2.5 V, 2.7 V min supply), both in SOT-23 packages.
Is the AD5808BCBZ-REEL pin-compatible with the AD5808BRMZ?
No, the AD5808BCBZ-REEL is not pin-compatible with the AD5808BRMZ. The AD5808BCBZ-REEL uses a 3-lead SOT-23 package (Pin 1 = Anode, Pin 2 = Cathode, Pin 3 = Trim), while the AD5808BRMZ uses a 5-lead SOT-23 package (RMZ suffix denotes 5-pin variant with separate sense and trim pins). Their pinouts, footprints, and PCB layouts are incompatible-direct substitution would require board redesign and violates JEDEC package standards.
What tape-and-reel configuration is supplied for the AD5808BCBZ-REEL?
The AD5808BCBZ-REEL is supplied on a 7-inch tape-and-reel per EIA-481 standard, with 3000 units per reel, 8 mm tape width, 4 mm pitch, and C4 pin 1 orientation (dot at top-left corner when sprocket holes face the observer and feed direction is counterclockwise). The carrier tape is static-dissipative, and reels ship in moisture-barrier bags with desiccant for humidity-sensitive handling.
AD5808BCBZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- -
- Series:
- *
- Packaging:
- Tape & Reel (TR)
- 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:
- -
- Supplier Device Package:
- -
AD5808BCBZ-REEL FAQ
1.How can I place an order for AD5808BCBZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5808BCBZ-REEL 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 AD5808BCBZ-REEL reliable?
The price and inventory of AD5808BCBZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5808BCBZ-REEL is usually 5 days.
3.What payment methods are accepted for AD5808BCBZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5808BCBZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5808BCBZ-REEL?
AD5808BCBZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5808BCBZ-REEL 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 AD5808BCBZ-REEL?
For technical support, including AD5808BCBZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5808BCBZ-REEL requirements.
6.How does Aetrix verify that AD5808BCBZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD5808BCBZ-REEL 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 AD5808BCBZ-REEL meets industry standards.
7.What is the process for return or replacement of AD5808BCBZ-REEL?
All AD5808BCBZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD5808BCBZ-REEL, 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 AD5808BCBZ-REEL part is unused and in its original packaging.
Return procedure for AD5808BCBZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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