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Analog Devices Inc. ADA4075-2ARZ-RL
- Part No.:
- ADA4075-2ARZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADA4075-2ARZ-RL.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,484
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Product details
Overview
ADA4075-2ARZ-RL from Analog Devices is a dual, ultralow-noise precision operational amplifier optimized for high-fidelity audio and precision instrumentation. It delivers 2.8 nV/√Hz voltage noise at 1 kHz, 0.0002% THD+N, 6.5 MHz gain bandwidth, ±4.5 V to ±18 V dual-supply operation, and unity-gain stability in an 8-lead SOIC package.
For engineers reviewing the ADA4075-2ARZ-RL datasheet, ADA4075-2ARZ-RL pinout, ADA4075-2ARZ-RL application, or ADA4075-2ARZ-RL equivalent, key selection criteria include input voltage noise density, distortion performance at audio frequencies, rail-to-rail output swing capability under 2 kΩ load, thermal drift behavior across −40°C to +125°C, and compatibility with low-power ±5 V or high-performance ±15 V supply configurations.
Technical Context
The ADA4075-2ARZ-RL uses Analog Devices' iPolar® bipolar process with vertical junction and lateral trench isolation, enabling low noise (2.8 nV/√Hz) and low power (1.8 mA per amplifier) simultaneously. Its architecture supports stable unity-gain operation and features internal input clamping diodes (±1.2 V differential) without series current-limiting resistors-preserving voltage noise performance.
It integrates phase reversal prevention circuitry that clamps output to ~2 V from rails when inputs exceed common-mode range, and achieves 60° phase margin with 1 MΩ load and 35 pF capacitance. Channel separation exceeds 100 dB at 10 kHz, supporting dual-channel integrity in balanced audio and precision sensor signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage noise density | 2.8 nV/√Hz at 1 kHz - enables sub-μV-level signal amplification in low-amplitude sensor front ends |
| THD + N | 0.0002% typical at 1 kHz, 3 Vrms, RL = 2 kΩ - meets professional audio line-level distortion requirements |
| Gain bandwidth product | 6.5 MHz - supports stable closed-loop gain ≥10 up to ~600 kHz with adequate phase margin |
| Slew rate | 12 V/μs - ensures faithful reproduction of fast transients in DAC output filtering and active filter stages |
| Supply current per amp | 1.8 mA typical at ±15 V - balances low-noise performance with moderate power consumption in dual-channel systems |
| Input offset voltage | 1 mV maximum - reduces dc error in precision integrators and low-gain instrumentation amplifiers |
| Operating temperature | −40°C to +125°C - qualified for industrial and automotive under-hood signal conditioning applications |
Pinout & Package
ADA4075-2ARZ-RL is supplied in an 8-lead SOIC (Small Outline Integrated Circuit) package, RoHS-compliant, with standard JEDEC MS-012AC footprint and 1.27 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUTA) | Amplifier A output | Drives external load; capable of ±13 V swing into 2 kΩ at ±15 V supply |
| 2 (–INA) | Inverting input A | Differential node for feedback network; clamped to ±1.2 V beyond supply rails |
| 3 (+INA) | Non-inverting input A | High-impedance input (500 MΩ common-mode); referenced to system ground or bias network |
| 4 (V–) | Negative supply rail | Connects to negative supply (e.g., –15 V); must be established before input signals |
| 5 (+INB) | Non-inverting input B | Independent high-Z input for second channel; electrically isolated from Channel A |
| 6 (–INB) | Inverting input B | Second channel feedback node; shares same clamping and noise characteristics as Pin 2 |
| 7 (OUTB) | Amplifier B output | Independent output; channel separation >100 dB at 10 kHz minimizes crosstalk |
| 8 (V+) | Positive supply rail | Connects to positive supply (e.g., +15 V); requires local 0.1 μF bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow voltage noise | 2.8 nV/√Hz at 1 kHz enables detection of microvolt-level signals in EEG, piezoelectric, or strain gauge interfaces |
| No series input resistors | Preserves intrinsic noise floor by omitting current-limiting resistors-critical for <3 nV/√Hz applications |
| Phase reversal protection | Clamps output to ~2 V from rails during overvoltage input events, preventing system latch-up in sensor front ends |
| Wide supply range | Operates from ±4.5 V to ±18 V, supporting both low-power portable audio and high-dynamic-range test equipment |
| Unity-gain stable | Eliminates need for external compensation in gain-of-one configurations like buffers and active filters |
Applications
| Professional Audio Line Driver | Precision Instrumentation Amplifier |
|---|---|
Use Scenario: Driving balanced 600 Ω audio lines from DAC outputs in studio-grade converters. IC Role / Device Role / Timing Role: Dual-channel differential line driver with matched gain and phase response. Use Value: 0.0002% THD+N and 12 V/μs slew rate preserve transient fidelity; channel separation >100 dB prevents inter-channel crosstalk. | Use Scenario: Low-noise front-end amplification for thermocouple or bridge-based pressure sensors. IC Role / Device Role / Timing Role: First-stage gain block in 24-bit sigma-delta data acquisition systems. Use Value: 2.8 nV/√Hz input noise and 1 mV max offset minimize quantization errors and dc drift in cold-junction compensation. |
| Low-Noise Active Filter | DAC Output Reconstruction Filter |
Use Scenario: 4th-order Sallen-Key anti-aliasing filter in medical imaging analog front ends. IC Role / Device Role / Timing Role: Dual op-amp implementing cascaded biquad sections with precise pole placement. Use Value: 6.5 MHz GBP and 60° phase margin ensure stable filter response up to 200 kHz without peaking or ringing. | Use Scenario: Differential-to-single-ended reconstruction filter after high-resolution audio DACs. IC Role / Device Role / Timing Role: Dual op-amp configured as differential Sallen-Key LPF with 167 kHz cutoff. Use Value: Ultralow noise and 12 V/μs slew rate suppress DAC image tones while preserving audio transient response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8672ARZ | Higher offset (125 µV typ), higher noise (4.8 nV/√Hz), lower slew rate (2.5 V/μs), but superior CMRR (130 dB) | Better suited for dc-coupled precision measurement where offset and CMRR dominate over noise and speed | Select AD8672ARZ when ultra-low offset drift (<0.6 µV/°C) and high CMRR outweigh noise/speed needs |
| OP275GPZ | Higher noise (4.5 nV/√Hz), higher supply current (4.5 mA/amp), wider supply range (±4 V to ±22 V), no phase reversal protection | Preferred in legacy audio designs requiring proven reliability and higher output drive into 600 Ω | Select OP275GPZ only when existing layout accommodates its larger SOIC footprint and higher power dissipation |
Compared with AD8672ARZ and OP275GPZ, the ADA4075-2ARZ-RL uniquely balances ultralow noise (2.8 nV/√Hz), low distortion (0.0002%), and integrated phase reversal protection-making it optimal for new audio and high-speed precision designs where signal integrity and robustness are co-prioritized.
Availability
ADA4075-2ARZ-RL is available at Aetrix Electronics and suitable for professional audio equipment, precision test instrumentation, and industrial sensor signal conditioning requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for ADA4075-2ARZ-RL 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 ADA4075-2ARZ-RL belongs to Analog Devices' precision op amp product line, engineered specifically for applications demanding ultralow noise, low distortion, and robust operation across extended industrial temperatures.
FAQ
What is the maximum supply voltage rating for the ADA4075-2ARZ-RL?
The ADA4075-2ARZ-RL has an absolute maximum supply voltage rating of ±20 V. Continuous operation is specified from ±4.5 V to ±18 V. Exceeding ±20 V risks permanent damage, and operation above ±18 V is not characterized or guaranteed per the Rev. C datasheet. For reliable long-term use, Analog Devices recommends staying within the ±4.5 V to ±18 V operating range.
Does the ADA4075-2ARZ-RL require external compensation for unity-gain stability?
No, the ADA4075-2ARZ-RL is internally compensated and unity-gain stable. It maintains ≥60° phase margin with a 1 MΩ load and 35 pF capacitive load, eliminating the need for external compensation components in buffer, follower, or gain-of-one active filter configurations. This simplifies PCB layout and improves consistency across production units.
What is the input voltage noise specification of the ADA4075-2ARZ-RL at 10 Hz?
The ADA4075-2ARZ-RL exhibits 60 nV p-p input voltage noise in the 0.1 Hz to 10 Hz band. At 10 Hz specifically, its voltage noise density is approximately 3.5 nV/√Hz (interpolated from Figure 45), reflecting its suitability for low-frequency precision applications such as thermopile or strain gauge amplification where 1/f noise dominates.
Can the ADA4075-2ARZ-RL drive a 600 Ω load effectively?
Yes, the ADA4075-2ARZ-RL delivers ±12.4 V output swing into a 600 Ω load at ±15 V supply, with THD+N remaining at 0.0002% at 1 kHz. Its 40 mA short-circuit current and low closed-loop output impedance (0.1 Ω at 1 kHz) ensure stable operation into 600 Ω, making it suitable for professional audio line driving and legacy test equipment interfaces.
Is the ADA4075-2ARZ-RL pin-compatible with other dual op amps in SOIC-8 packages?
No, the ADA4075-2ARZ-RL follows the standard dual op amp pinout (OUTA, –INA, +INA, V–, +INB, –INB, OUTB, V+), matching industry convention used by AD8672, OP275, and LM4562. However, functional equivalence-including noise, slew rate, and protection features-must be verified independently; pin compatibility alone does not guarantee drop-in replacement.
ADA4075-2ARZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iPolar®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 12V/µs
- Gain Bandwidth Product:
- 6.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 30 nA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 1.8mA (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 9 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADA4075-2ARZ-RL FAQ
1.How can I place an order for ADA4075-2ARZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4075-2ARZ-RL 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 ADA4075-2ARZ-RL reliable?
The price and inventory of ADA4075-2ARZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4075-2ARZ-RL is usually 5 days.
3.What payment methods are accepted for ADA4075-2ARZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4075-2ARZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4075-2ARZ-RL?
ADA4075-2ARZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4075-2ARZ-RL 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 ADA4075-2ARZ-RL?
For technical support, including ADA4075-2ARZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4075-2ARZ-RL requirements.
6.How does Aetrix verify that ADA4075-2ARZ-RL is sourced from the original manufacturer or authorized distributors?
All ADA4075-2ARZ-RL 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 ADA4075-2ARZ-RL meets industry standards.
7.What is the process for return or replacement of ADA4075-2ARZ-RL?
All ADA4075-2ARZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADA4075-2ARZ-RL, 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 ADA4075-2ARZ-RL part is unused and in its original packaging.
Return procedure for ADA4075-2ARZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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