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Analog Devices Inc. AD8551ARZ-REEL
- Part No.:
- AD8551ARZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8551ARZ-REEL.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,860
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Product details
Overview
AD8551ARZ-REEL from Analog Devices is a zero-drift, single-supply, rail-to-rail input/output operational amplifier optimized for precision DC-coupled signal conditioning. It delivers 1 μV typical offset voltage, 0.005 μV/°C drift, 130 dB CMRR, 700 μA supply current, and operates from 2.7 V to 5 V. It is used in high-accuracy sensor front-ends such as thermocouple and strain gage amplifiers where near-zero drift over −40°C to +125°C is critical.
For engineers reviewing the AD8551ARZ-REEL datasheet, AD8551ARZ-REEL pinout, AD8551ARZ-REEL application, or AD8551ARZ-REEL equivalent, key selection criteria include ultralow offset drift, rail-to-rail I/O swing at low supply voltage, guaranteed operation across automotive temperature range, and absence of external capacitor requirements for stability.
Technical Context
The AD8551ARZ-REEL employs auto-zero stabilization architecture with dual internal amplifiers: a main amplifier and a nulling amplifier that periodically samples and corrects its own offset. This enables sub-microvolt offset and nanovolt-per-degree-Celsius drift without chopper modulation artifacts.
Its rail-to-rail input stage combines NMOS and PMOS differential pairs to support common-mode voltage from ground to VS; the output stage uses complementary common-source transistors enabling output swing within 10 mV of rails under light load, with short-circuit protection up to ±50 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 1 μV typical - enables ≥1000× gain without significant DC error in precision sensor interfaces |
| Offset Drift | 0.005 μV/°C - ensures <10 μV total offset shift over full −40°C to +125°C operating range |
| Supply Range | 2.7 V to 5 V single supply - supports battery-powered and industrial 3.3 V/5 V systems without dual rails |
| CMRR / PSRR | 130 dB typical - rejects power supply noise and common-mode interference in noisy environments |
| Supply Current | 700 μA per amplifier - allows low-power operation while maintaining precision performance |
| Output Swing | Rail-to-rail - delivers full dynamic range from 0 V to VS, simplifying level-shifting in single-supply data acquisition |
| Gain Bandwidth | 1.5 MHz at 5 V - sufficient for DC–100 kHz precision amplification with stable closed-loop response |
Pinout & Package
The AD8551ARZ-REEL is packaged in an 8-lead narrow SOIC (R suffix), with exposed pad not electrically connected. Pin 1 is marked by a beveled corner or dot; device orientation follows standard SOIC conventions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (−IN) | Inverting Input | Differential input node; accepts signals down to GND and up to VS due to rail-to-rail input stage |
| 2 (+IN) | Noninverting Input | Differential input node; same common-mode range as −IN; critical for precision instrumentation configurations |
| 3 (V−) | Negative Supply / Ground | Reference for single-supply operation; must be connected to system ground or lowest potential rail |
| 4 (V+) | Positive Supply | Accepts 2.7 V to 5 V; PSRR >120 dB minimizes sensitivity to supply ripple |
| 5 (OUT) | Amplifier Output | Delivers rail-to-rail voltage swing; capable of sourcing/sinking ±30 mA; short-circuit protected |
| 6, 7, 8 (NC) | No Connect | Internally unconnected; must remain floating or grounded per PCB layout best practices-no routing or loading |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Auto-zero topology eliminates long-term drift and 1/f noise, enabling stable DC accuracy over time and temperature |
| Rail-to-rail I/O | Full input common-mode range (GND to VS) and output swing (within 10 mV of rails) maximize usable signal range in single-supply systems |
| No external capacitors | Internally compensated for unity-gain stability with capacitive loads ≤300 pF-reduces BOM count and layout complexity |
| Extended temperature grade | Specified from −40°C to +125°C-qualified for under-hood automotive, industrial control, and harsh-environment applications |
| Ultralow input bias current | 20 pA typical-minimizes voltage error across high-impedance sensor sources like thermocouples and piezoresistive bridges |
Applications
| Temperature Sensor Interface | Strain Gage Amplifier |
|---|---|
Use Scenario: Amplifying low-level mV outputs from RTDs or thermistors in HVAC controllers and battery thermal management systems. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with offset cancellation, rejecting self-heating errors and ambient drift. Use Value: 1 μV offset and 0.005 μV/°C drift enable <0.1°C measurement uncertainty over full automotive temperature range. | Use Scenario: Signal conditioning for quarter-bridge or full-bridge strain gages in structural health monitoring and load cells. IC Role / Device Role / Timing Role: Low-noise, high-CMRR instrumentation front-end with rail-to-rail output driving ADC reference buffers. Use Value: 130 dB CMRR suppresses bridge excitation coupling; rail-to-rail swing maximizes ADC utilization without level-shifting circuitry. |
| Precision Current Sensing | Medical Instrumentation Front-End |
Use Scenario: High-side or low-side current monitoring in motor drives and power supplies using shunt resistors. IC Role / Device Role / Timing Role: Bidirectional current-sense amplifier with programmable gain, leveraging rail-to-rail input to handle both polarities. Use Value: Input range from GND to VS allows direct connection to shunt placed on either side of load-no level translators required. | Use Scenario: Biopotential signal amplification (ECG, EEG) requiring ultra-stable baseline and minimal DC drift. IC Role / Device Role / Timing Role: First-stage amplifier in analog front-end, providing high input impedance and low 0.1–10 Hz noise. Use Value: 1.0 μVp-p (0–10 Hz) noise and 20 pA bias current prevent electrode polarization errors and preserve microvolt-level signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2050CS8#TRPBF | Higher 0.5 μV max offset, 0.03 μV/°C max drift; 1.1 MHz GBW; SOIC-8 package | Lower bandwidth and higher drift limit use in high-precision, wide-temperature industrial sensors | Select when lower cost is prioritized over sub-μV drift and 1.5 MHz bandwidth is sufficient |
| OPA333AIDBVR | 0.5 μV max offset, 0.02 μV/°C max drift; 350 μA supply current; SOT-23-5 package | Smaller footprint and lower power, but reduced output drive (±15 mA) and no MSOP/SOIC-8 drop-in compatibility | Select for space-constrained, ultra-low-power portable medical devices where 5-V rail-to-rail swing is not required |
Compared with LTC2050CS8#TRPBF and OPA333AIDBVR, the AD8551ARZ-REEL provides superior drift performance (0.005 μV/°C vs. ≥0.02 μV/°C), higher output drive (±30 mA), and guaranteed rail-to-rail swing at 5 V-making it optimal for demanding automotive and industrial sensor nodes where long-term calibration stability is non-negotiable.
Availability
AD8551ARZ-REEL is available at Aetrix Electronics and suitable for temperature sensor interfaces, strain gage amplifiers, and precision current sensing applications requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for AD8551ARZ-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 AD8551ARZ-REEL belongs to Analog Devices' zero-drift op amp product line, engineered specifically for high-accuracy, low-drift signal conditioning in automotive, industrial, and medical instrumentation where traditional op amps fail to meet long-term DC stability requirements.
FAQ
What is the maximum operating temperature range for the AD8551ARZ-REEL?
The AD8551ARZ-REEL is specified for operation from −40°C to +125°C, meeting extended industrial and automotive under-hood requirements. This rating is validated across all electrical parameters in the datasheet, including offset voltage, CMRR, and output drive capability, ensuring reliable performance in harsh thermal environments where the AD8551ARZ-REEL is deployed.
Does the AD8551ARZ-REEL require external compensation capacitors?
No, the AD8551ARZ-REEL is internally compensated for unity-gain stability and does not require external capacitors. It remains stable with capacitive loads up to 300 pF, simplifying design and reducing bill-of-materials cost-key advantages confirmed in the AD8551ARZ-REEL datasheet Figures 23–24 and functional description section.
Can the AD8551ARZ-REEL operate from a 3.3 V supply?
Yes, the AD8551ARZ-REEL fully supports 3.3 V single-supply operation. Its 2.7 V to 5 V supply range includes 3.3 V, and all key specifications-including 1 μV offset, rail-to-rail I/O, and 130 dB CMRR-are guaranteed at this voltage, making the AD8551ARZ-REEL ideal for modern low-voltage embedded systems.
What is the overload recovery time of the AD8551ARZ-REEL?
The AD8551ARZ-REEL has a typical overload recovery time of 50 μs, as specified in the datasheet's Electrical Characteristics table. This fast recovery enables accurate amplification of transient signals in applications such as overload detection circuits and pulse-width modulated sensor excitation where the AD8551ARZ-REEL must quickly return to linear operation after saturation.
Is the AD8551ARZ-REEL pin-compatible with other op amps in the AD855x family?
The AD8551ARZ-REEL (single) shares the same 8-lead SOIC pinout as the AD8552 (dual) only in its R-suffix variant-but pin functions differ across channels. It is not pin-compatible with AD8552 or AD8554. The AD8551ARZ-REEL's dedicated SOIC-8 layout-with pins 1–5 assigned to −IN, +IN, V−, V+, OUT and pins 6–8 as NC-is unique to the single-channel variant and must be verified against Figure 2 in the AD8551ARZ-REEL datasheet.
AD8551ARZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.4V/µs
- Gain Bandwidth Product:
- 1.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 pA
- Voltage - Input Offset:
- 1 µV
- Current - Supply:
- 850µA
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AD8551ARZ-REEL FAQ
1.How can I place an order for AD8551ARZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8551ARZ-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 AD8551ARZ-REEL reliable?
The price and inventory of AD8551ARZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8551ARZ-REEL is usually 5 days.
3.What payment methods are accepted for AD8551ARZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8551ARZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8551ARZ-REEL?
AD8551ARZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8551ARZ-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 AD8551ARZ-REEL?
For technical support, including AD8551ARZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8551ARZ-REEL requirements.
6.How does Aetrix verify that AD8551ARZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD8551ARZ-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 AD8551ARZ-REEL meets industry standards.
7.What is the process for return or replacement of AD8551ARZ-REEL?
All AD8551ARZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8551ARZ-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 AD8551ARZ-REEL part is unused and in its original packaging.
Return procedure for AD8551ARZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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