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Analog Devices Inc. AD8675ARZ-REEL
- Part No.:
- AD8675ARZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8675ARZ-REEL.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,597
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Product details
Overview
AD8675ARZ-REEL from Analog Devices is a precision rail-to-rail output operational amplifier optimized for low-noise, high-DC-accuracy signal conditioning in ±5 V to ±15 V systems. It delivers 2.8 nV/√Hz voltage noise density at 1 kHz, 10 µV typical input offset voltage, and 10 MHz gain bandwidth, enabling high-fidelity amplification in thermocouple and strain gage interfaces.
For engineers reviewing the AD8675ARZ-REEL datasheet, AD8675ARZ-REEL pinout, AD8675ARZ-REEL application, or AD8675ARZ-REEL equivalent, key selection criteria include verified rail-to-rail output swing (±4.95 V at ±5 V supply), 0.2 µV/°C max offset drift over −40°C to +125°C, and confirmed SOIC_N (R-8) package compatibility with standard 8-lead PCB footprints.
Technical Context
The AD8675ARZ-REEL employs a proprietary bipolar input stage delivering ultralow voltage noise (2.8 nV/√Hz) while maintaining 2 nA maximum input bias current across −40°C to +125°C. Its architecture supports precision nulling via external resistors on Pins 1 and 8, compensating up to ±3.5 mV of total input-referred offset without degrading CMRR or PSRR.
This op amp operates with full rail-to-rail output swing into 2 kΩ loads (VOH = +4.80 V, VOL = −4.91 V at ±5 V), achieves 120 dB open-loop gain, and maintains stable unity-gain operation with 55.2° phase margin at 10 MHz-enabling direct replacement of legacy OP07-class amplifiers in high-precision filter and sensor front-end designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±5 V to ±15 V - supports industrial dual-rail systems without level-shifting circuitry |
| Voltage Noise Density | 2.8 nV/√Hz @ 1 kHz - enables sub-µV resolution in low-frequency instrumentation |
| Input Offset Voltage | 10 µV typical, 75 µV max @ 25°C - reduces DC error in precision integrators and reference buffers |
| Offset Drift | 0.2 µV/°C typical, 0.6 µV/°C max - ensures <1 µV total drift over 0–100°C ambient range |
| Gain Bandwidth Product | 10 MHz - supports stable closed-loop gain ≥100 up to 100 kHz |
| Common-Mode Rejection | 130 dB typical - rejects >99.999% of common-mode interference in differential sensing |
| Output Swing | Rail-to-rail: ±4.95 V @ ±5 V, ±14.92 V @ ±15 V into 10 kΩ - maximizes dynamic range in ADC driver stages |
Pinout & Package
AD8675ARZ-REEL is packaged in an 8-lead SOIC_N (R-8) RoHS-compliant surface-mount package measuring 4.90 mm × 3.90 mm × 1.75 mm, with standard 1.27 mm lead pitch and JEDEC MS-012-AA compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Null Input (Offset Trim) | Connects to external potentiometer wiper for system-level offset calibration; no internal connection required for basic operation |
| 2 | Inverting Input (−IN) | Differential input node accepting feedback network; high-impedance (input bias current ≤2 nA) |
| 3 | Noninverting Input (+IN) | Differential input node accepting reference or sensor signal; common-mode range extends to rails |
| 4 | Negative Supply (V−) | Connects to negative rail (e.g., −5 V); must be established before input signals per power sequencing requirement |
| 5 | No Connect (NC) | Internally unconnected; must remain floating or grounded per layout best practices |
| 6 | Output (OUT) | Delivers rail-to-rail voltage swing; capable of ±35 mA short-circuit current |
| 7 | Positive Supply (V+) | Connects to positive rail (e.g., +5 V); supplies 2.7 mA quiescent current per amplifier |
| 8 | Null Input (Offset Trim) | Second terminal for external offset nulling resistor network; forms balanced trim pair with Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow voltage noise | 2.8 nV/√Hz enables high-SNR amplification of microvolt-level sensor outputs without added filtering |
| Rail-to-rail output swing | Delivers full ±4.95 V swing at ±5 V supply, preserving 99% of ADC input range in 16-bit systems |
| External offset nulling | Supports ±3.5 mV total input-referred offset compensation without impacting temperature stability or PSRR |
| Low input bias current | 2 nA max ensures <10 µV error from 1 MΩ source impedance, critical for piezoelectric and pH sensor interfaces |
| High open-loop gain | 120 dB minimizes gain error in precision gain blocks and active filters requiring <0.001% linearity |
Applications
| Thermocouple Amplifier | Laser Diode Control Loop |
|---|---|
Use Scenario: Amplifying µV-level Seebeck voltages from K-type thermocouples across −40°C to +125°C ambient. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with cold-junction compensation interface. Use Value: 0.2 µV/°C offset drift and 2.8 nV/√Hz noise ensure <0.1°C measurement uncertainty without post-acquisition digital correction. |
Use Scenario: Regulating laser diode current via transimpedance feedback in optical transceivers. IC Role / Device Role / Timing Role: Low-noise, high-PSRR current-sense amplifier driving MOSFET gate in constant-current loop. Use Value: 140 dB PSRR suppresses supply ripple-induced optical power modulation; rail-to-rail output drives gate fully at low VGS. |
| Strain Gage Bridge Interface | Medical ECG Front-End |
Use Scenario: Conditioning Wheatstone bridge outputs from load cells with 2 mV/V sensitivity. IC Role / Device Role / Timing Role: First-stage differential amplifier with programmable gain and offset trimming. Use Value: 10 µV typical VOS and 130 dB CMRR reject bridge imbalance errors and EMI, enabling 24-bit resolution digitization. |
Use Scenario: Biopotential amplification in portable ECG monitors with battery-powered ±5 V rails. IC Role / Device Role / Timing Role: Right-leg drive (RLD) buffer and lead-off detection amplifier with ultra-low input current. Use Value: 2 nA max IB prevents electrode polarization; 120 dB AVO ensures <0.001% gain error in calibrated diagnostic pathways. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP27GSZ-REEL7 | Higher 3.5 nV/√Hz noise, no rail-to-rail output, ±12 V max supply | Requires level-shifting for single-supply ADC drivers; less suitable for low-voltage precision sensors | Choose when legacy OP27 footprint compatibility is mandatory and rail-to-rail swing is not required |
| ADA4004-1ARZ | Lower 1.8 nV/√Hz noise but higher 10 nA input bias current and no offset null pins | Superior for ultra-low-noise audio preamps; unsuitable for high-impedance pH or piezo sensors | Choose when voltage noise is primary constraint and external offset trimming is unnecessary |
Compared with OP27GSZ-REEL7 and ADA4004-1ARZ, the AD8675ARZ-REEL uniquely combines rail-to-rail output, ultralow noise, and external nulling capability-making it the only option among the three that supports both high-impedance sensor interfaces and full-rail ADC driver operation without design compromises.
Availability
AD8675ARZ-REEL is available at Aetrix Electronics and suitable for precision instrumentation, medical diagnostics, and industrial sensor signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for AD8675ARZ-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 AD8675ARZ-REEL belongs to Analog Devices' ultraprecision op amp product line, engineered specifically for applications demanding sub-microvolt offset stability, nanovolt-level noise, and rail-to-rail output fidelity in harsh industrial and medical environments.
FAQ
What is the operating temperature range for the AD8675ARZ-REEL?
The AD8675ARZ-REEL is specified for continuous operation from −40°C to +125°C, meeting extended industrial requirements. Its offset drift remains bounded at 0.6 µV/°C maximum across this full range, and thermal resistance (θJA) is 120°C/W in the SOIC_N package-enabling reliable performance in sealed enclosures without forced airflow.
Does the AD8675ARZ-REEL support external offset nulling, and how is it implemented?
Yes, the AD8675ARZ-REEL supports external offset nulling using Pins 1 and 8 as dedicated trim terminals. A 100 kΩ potentiometer connected between these pins-with its wiper grounded-allows adjustment of total input-referred offset up to ±3.5 mV. This calibration preserves the AD8675ARZ-REEL's inherent 0.2 µV/°C drift and 130 dB CMRR, unlike older nulling methods.
What are the absolute maximum supply voltage ratings for the AD8675ARZ-REEL?
The AD8675ARZ-REEL has an absolute maximum supply voltage rating of ±18 V. Operation beyond this risks permanent damage. For reliable long-term use, Analog Devices specifies full performance from ±5 V to ±15 V; at ±15 V, the AD8675ARZ-REEL delivers ±14.92 V output swing into 10 kΩ and maintains 123 dB open-loop gain.
Can the AD8675ARZ-REEL drive capacitive loads, and what is its phase margin?
The AD8675ARZ-REEL maintains 55.2° phase margin at unity gain with a 35 pF capacitive load, as verified in Figure 12 of the datasheet. It can safely drive up to 100 pF with minor peaking (<5% overshoot), making it suitable for driving ADC input capacitors and coaxial cables without external isolation resistors.
Is the AD8675ARZ-REEL RoHS compliant, and what packaging format does it use?
Yes, the AD8675ARZ-REEL is RoHS compliant (indicated by the "Z" suffix) and supplied in tape-and-reel format per the ordering guide. It uses an 8-lead SOIC_N (R-8) package with JEDEC MS-012-AA dimensions (4.90 mm × 3.90 mm), ensuring drop-in compatibility with standard SOIC footprints used for OP07, OP27, and AD8628 family devices.
AD8675ARZ-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:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2.5V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 500 pA
- Voltage - Input Offset:
- 10 µV
- Current - Supply:
- 2.5mA
- Current - Output / Channel:
- 35 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AD8675ARZ-REEL FAQ
1.How can I place an order for AD8675ARZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8675ARZ-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 AD8675ARZ-REEL reliable?
The price and inventory of AD8675ARZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8675ARZ-REEL is usually 5 days.
3.What payment methods are accepted for AD8675ARZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8675ARZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8675ARZ-REEL?
AD8675ARZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8675ARZ-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 AD8675ARZ-REEL?
For technical support, including AD8675ARZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8675ARZ-REEL requirements.
6.How does Aetrix verify that AD8675ARZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD8675ARZ-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 AD8675ARZ-REEL meets industry standards.
7.What is the process for return or replacement of AD8675ARZ-REEL?
All AD8675ARZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8675ARZ-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 AD8675ARZ-REEL part is unused and in its original packaging.
Return procedure for AD8675ARZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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