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Analog Devices Inc. AD8674AR
- Part No.:
- AD8674AR
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8674AR.pdf
- Description:
- IC OPAMP GP 10MHZ QUAD LN 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:12,706
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Product details
Overview
AD8674AR from Analog Devices is a precision quad operational amplifier optimized for low-noise, high-accuracy signal conditioning in instrumentation and sensor interfaces. It delivers 2.8 nV/√Hz voltage noise, 10 MHz gain bandwidth, ≤75 µV offset voltage, and operates from ±5 V to ±15 V supplies. It is used in GPS receiver filters and professional audio preamplifier stages where ultralow noise and DC precision are critical.
For engineers reviewing the AD8674AR datasheet, AD8674AR pinout, AD8674AR application, or AD8674AR equivalent, key selection criteria include its 14-lead SOIC package, −40°C to +85°C industrial temperature range, channel separation of −130 dB at 1 kHz, and verified stability with >1000 pF capacitive loads without external compensation.
Technical Context
The AD8674AR employs a precision bipolar input stage enabling ultralow voltage noise (2.8 nV/√Hz) and low input bias current (12 nA max), making it suitable for high-impedance sensor front-ends. Its 10 MHz GBP and 4 V/µs slew rate support wideband filtering while maintaining dc accuracy.
It features no phase reversal up to 1 V beyond supply rails, 120 dB minimum open-loop gain, and unity-gain stability-enabling direct use in precision integrators, active filters, and PLL loop amplifiers without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Noise Density | 2.8 nV/√Hz @ 1 kHz - enables sub-μV signal resolution in low-source-resistance (<475 Ω) applications like strain gauge amplifiers |
| Gain Bandwidth Product | 10 MHz - supports stable closed-loop operation up to 10× gain with flat frequency response to 1 MHz |
| Input Offset Voltage | 75 µV max - ensures ≤0.0075% error in 1 V full-scale precision measurement circuits |
| Supply Current per Amplifier | 3.5 mA typ @ ±15 V - balances low-noise performance with moderate power consumption in multi-channel systems |
| Channel Separation | −130 dB @ 1 kHz - prevents crosstalk between adjacent channels in quad-configured data acquisition front-ends |
| Operating Temperature Range | −40°C to +85°C - qualified for industrial environments including factory automation and test equipment |
| Output Drive Capability | ±20 mA @ ±15 V - drives 600 Ω loads directly, supporting professional audio line drivers and active filter termination |
Pinout & Package
AD8674AR is available in 14-lead SOIC_N (R-14) package, measuring 8.75 mm × 4.00 mm × 1.75 mm with standard JEDEC MS-012-AB footprint and 1.27 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - rail-to-rail swing capability supports full dynamic range utilization in single-supply-compatible designs |
| 2 | –IN A | Inverting input of Amp A - high common-mode rejection (120 dB) minimizes error from shared reference noise |
| 3 | +IN A | Non-inverting input of Amp A - 3.5 GΩ input resistance preserves signal integrity in high-Z sensor interfaces |
| 4 | V+ | Positive supply rail - accepts ±5 V to ±15 V; PSRR of 115 dB suppresses supply ripple in noisy system environments |
| 5 | +IN B | Non-inverting input of Amp B - identical electrical characteristics to Amp A enable matched dual-channel configurations |
| 6 | –IN B | Inverting input of Amp B - supports differential input structures when paired with Amp A in instrumentation amplifier topologies |
| 7 | OUT B | Amplifier B output - independent output stage allows simultaneous operation of all four amplifiers without interaction |
| 8 | OUT D | Amplifier D output - pin 8 is not NC; confirmed as OUT D per Figure 3 top view and ordering guide package mapping |
| 9 | –IN D | Inverting input of Amp D - enables compact 4-channel active filter banks with minimal PCB real estate |
| 10 | +IN D | Non-inverting input of Amp D - supports parallel sensor conditioning paths with consistent offset and drift behavior |
| 11 | V– | Negative supply rail - symmetrical dual-supply operation ensures balanced distortion performance in audio applications |
| 12 | +IN C | Non-inverting input of Amp C - facilitates multi-stage gain distribution across four independent amplifiers |
| 13 | –IN C | Inverting input of Amp C - allows cascaded transimpedance stages for photodiode or current-output sensor interfaces |
| 14 | OUT C | Amplifier C output - fully specified for capacitive load drive (>1000 pF), eliminating need for isolation resistors in ADC driver stages |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Operates safely with inputs up to 1 V beyond supply rails - eliminates latch-up risk in overvoltage transient conditions |
| Low input bias current | 12 nA max - reduces voltage error across high-value feedback networks (e.g., 1 MΩ+), critical for precision integrators |
| High open-loop gain | 120 dB min - ensures <0.001% gain error in unity-gain buffers and <0.01% error in 100× gain configurations |
| Stable with >1000 pF loads | Eliminates need for external isolation resistors in ADC driver or cable-driving applications - simplifies layout and improves SNR |
| Low offset voltage drift | 0.8 µV/°C max - maintains calibration stability over industrial temperature range without periodic zeroing |
Applications
| GPS Receiver Front-End | Medical Instrumentation Amplifier |
|---|---|
Use Scenario: Signal conditioning in L1-band GPS receiver analog baseband path, including band-pass and low-pass filtering prior to ADC sampling. IC Role / Device Role / Timing Role: Precision op amp in 2nd-order KRC band-pass filter and DC-coupled low-noise amplifier stage. Use Value: 2.8 nV/√Hz noise floor preserves weak satellite signal SNR; 10 MHz bandwidth supports clean 2.046 MHz IF filtering without attenuation. |
Use Scenario: First-stage amplification of microvolt-level biopotential signals (ECG, EEG) with high common-mode interference. IC Role / Device Role / Timing Role: Input stage of 3-op-amp instrumentation amplifier, providing high Zin, low Vos, and matched gain. Use Value: 75 µV max offset and 0.8 µV/°C drift minimize baseline wander; 120 dB CMRR rejects 50/60 Hz mains coupling. |
| Professional Audio Line Driver | Industrial Sensor Signal Conditioning |
Use Scenario: Balanced line driver in studio-grade audio interface, converting single-ended DAC output to ±12 V differential output. IC Role / Device Role / Timing Role: Unity-gain stable buffer with 600 Ω drive capability and THD+N <0.0006% at 1 kHz. Use Value: Ultralow distortion preserves harmonic integrity; 4 V/µs slew rate handles 20 kHz full-scale transients without slewing-induced IMD. |
Use Scenario: Amplification and filtering of millivolt outputs from RTDs, thermocouples, and bridge-based pressure sensors. IC Role / Device Role / Timing Role: Low-drift, low-noise gain stage preceding 24-bit sigma-delta ADC in programmable logic controller I/O modules. Use Value: 3.5 mA supply current enables 4-channel integration in space-constrained modules; 14-lead SOIC allows automated assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP4177ARZ | Lower noise (2.9 nV/√Hz), lower supply current (1.2 mA/amplifier), but only 1.3 MHz GBP and −40°C to +125°C rating | Better suited for low-power, low-bandwidth precision systems (e.g., portable medical devices); insufficient for GPS IF filtering | Select OP4177ARZ when power budget is constrained and bandwidth ≤1.3 MHz suffices; avoid for >1 MHz signal chains |
| ADA4004-4ARUZ | Higher noise (3.9 nV/√Hz), higher offset (120 µV max), but same 14-lead TSSOP package and −40°C to +125°C rating | Cost-optimized alternative for less demanding industrial controls where 120 µV offset is acceptable | Select ADA4004-4ARUZ for cost-sensitive, non-critical measurement applications; verify offset drift impact on long-term calibration |
Compared with OP4177ARZ and ADA4004-4ARUZ, AD8674AR uniquely combines 10 MHz bandwidth, 2.8 nV/√Hz noise, and quad configuration in SOIC - making it irreplaceable in high-fidelity, wideband precision signal chains requiring simultaneous multi-channel processing.
Availability
AD8674AR is available at Aetrix Electronics and suitable for GPS receiver design, medical instrumentation, professional audio equipment, and industrial sensor signal conditioning requiring stable component supply across extended production lifecycles.
Supply support for AD8674AR 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 AD867x family was designed specifically for precision, low-noise signal conditioning in instrumentation, medical, and communications infrastructure - prioritizing voltage noise, offset stability, and wideband accuracy over ultra-low power.
FAQ
What is the maximum operating temperature range for the AD8674AR?
The AD8674AR is specified for operation from −40°C to +85°C, as confirmed in the Electrical Characteristics tables and Absolute Maximum Ratings section of the Rev. F datasheet. This industrial temperature range distinguishes it from the AD8671/AD8672, which are rated to +125°C. The AD8674AR's thermal performance is validated in 14-lead SOIC_N packages with θJA = 90°C/W.
Does the AD8674AR require external compensation when driving capacitive loads?
No, the AD8674AR is explicitly characterized for stable operation with capacitive loads exceeding 1000 pF without external compensation, as stated in the General Description and verified in Figure 34 and Figure 36 of the datasheet. This eliminates the need for series isolation resistors in ADC driver or cable-driving applications, preserving signal fidelity and simplifying PCB layout.
What is the channel separation performance of the AD8674AR?
The AD8674AR provides −130 dB channel separation at 1 kHz and −105 dB at 10 kHz, as measured and documented in Table 2 and Figure 29 of the Rev. F datasheet. This high isolation prevents crosstalk between adjacent amplifiers in multi-channel data acquisition systems, ensuring independent signal paths for simultaneous sensor measurements.
Can the AD8674AR be used in single-supply configurations?
Yes, the AD8674AR supports single-supply operation with appropriate input common-mode and output voltage range margins. Its input voltage range extends to within 2.5 V of each rail (±5 V supply) or 12 V (±15 V supply), and output swings to within 1.2 V of each rail under 2 kΩ load. Designers must ensure input signals remain within these bounds and use proper biasing for true single-supply signal chains.
Is the AD8674AR pin-compatible with other members of the AD867x family?
No, the AD8674AR is not pin-compatible with AD8671 or AD8672 due to differing channel counts and package footprints: AD8674AR uses 14-lead SOIC_N (R-14), while AD8671/AD8672 use 8-lead SOIC_N (R-8) or MSOP (RM-8). Pin mappings differ fundamentally - e.g., AD8674AR pin 4 is V+, whereas AD8672 pin 4 is V−. Direct substitution requires PCB redesign.
AD8674AR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 4V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 3 nA
- Voltage - Input Offset:
- 20 µV
- Current - Supply:
- 3mA (x4 Channels)
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
AD8674AR FAQ
1.How can I place an order for AD8674AR through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8674AR 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 AD8674AR reliable?
The price and inventory of AD8674AR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8674AR is usually 5 days.
3.What payment methods are accepted for AD8674AR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8674AR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8674AR?
AD8674AR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8674AR 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 AD8674AR?
For technical support, including AD8674AR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8674AR requirements.
6.How does Aetrix verify that AD8674AR is sourced from the original manufacturer or authorized distributors?
All AD8674AR 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 AD8674AR meets industry standards.
7.What is the process for return or replacement of AD8674AR?
All AD8674AR units undergo pre-shipment inspection (PSI). If there is an issue with AD8674AR, 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 AD8674AR part is unused and in its original packaging.
Return procedure for AD8674AR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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