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Analog Devices Inc. ADA4075-2ACPZ-R7
- Part No.:
- ADA4075-2ACPZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-UFDFN, CSP
- Datasheet:
-
ADA4075-2ACPZ-R7.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,368
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Product details
Overview
ADA4075-2 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 both 8-lead SOIC and 2 mm × 2 mm LFCSP packages.
For engineers reviewing the ADA4075-2 datasheet, ADA4075-2 pinout, ADA4075-2 application, or ADA4075-2 equivalent, key selection considerations include its ultralow noise floor, low distortion at audio frequencies, rail-to-rail output swing capability under 2 kΩ load, extended industrial temperature range (−40°C to +125°C), and dual-package availability for space-constrained or thermal-performance-critical designs.
Technical Context
The ADA4075-2 employs Analog Devices' iPolar® bipolar process with vertical junction and lateral trench isolation, enabling low-noise performance (2.8 nV/√Hz) at reduced power (1.8 mA per amplifier). Its architecture supports stable unity-gain operation and exhibits 60° phase margin with 1 MΩ load and 35 pF capacitance.
It features integrated input clamp diodes (±1.2 V differential limit), phase reversal prevention (output clamped to ~2 V from rails), and no internal current-limiting resistors-preserving voltage noise integrity but requiring external protection above ±1.2 V differential input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Noise Density | 2.8 nV/√Hz at 1 kHz - enables sub-μV signal amplification without dominant op-amp noise contribution in audio and sensor front ends. |
| THD + Noise | 0.0002% typical at 1 kHz, 3 Vrms, RL = 2 kΩ - ensures negligible harmonic corruption in professional audio line-level stages. |
| Gain Bandwidth Product | 6.5 MHz - supports stable closed-loop gain ≥10 up to ~650 kHz, suitable for active filters and DAC reconstruction. |
| Slew Rate | 12 V/μs - allows clean 10 Vpp signals at ≥190 kHz without slew-induced distortion. |
| Supply Current per Amp | 1.8 mA typical (±4.5 V to ±18 V) - balances low power with high dynamic performance for portable or thermally constrained systems. |
| Input Offset Voltage | 1 mV maximum (−40°C to +125°C) - ensures ≤10 μV error in 10× gain precision DC-coupled paths over full temperature range. |
| Common-Mode Rejection | 106 dB minimum (−40°C to +125°C) - maintains accuracy in single-supply referenced or noisy industrial environments. |
Pinout & Package
ADA4075-2 is available in two surface-mount packages: 8-lead SOIC (standard footprint, θJA = 158°C/W) and 8-lead 2 mm × 2 mm LFCSP (compact size, improved thermal performance, θJA = 115°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUTA) | Amplifier A output | Low-impedance buffered output capable of ±13 V swing into 2 kΩ at ±15 V supply; drives filters, ADC drivers, or line outputs. |
| 2 (–INA) | Inverting input A | Differential input node with 500 MΩ common-mode resistance; requires external current limiting if differential voltage exceeds ±1.2 V. |
| 3 (+INA) | Non-inverting input A | High-impedance input node; used for unity-gain buffers, active filters, or precision reference buffering. |
| 4 (V–) | Negative supply rail | Connects to negative supply (e.g., –15 V); must be established before input signals to prevent latch-up. |
| 5 (+INB) | Non-inverting input B | Independent second amplifier input; enables dual-channel signal conditioning without cross-talk degradation (channel separation >110 dB @ 1 kHz). |
| 6 (–INB) | Inverting input B | Second amplifier inverting node; supports independent gain stages, differential receivers, or matched filter pairs. |
| 7 (OUTB) | Amplifier B output | Fully independent output; usable for stereo audio, dual-sensor conditioning, or redundant monitoring paths. |
| 8 (V+) | Positive supply rail | Connects to positive supply (e.g., +15 V); power sequencing requires simultaneous or prior establishment vs. inputs. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow voltage noise | 2.8 nV/√Hz at 1 kHz - preserves SNR in microphone preamps, strain gauge amplifiers, and low-level sensor interfaces. |
| No internal input series resistors | Maintains 2.8 nV/√Hz noise floor - avoids thermal noise penalty typical of protected-input op amps, critical for <100 nV signal chains. |
| Phase reversal prevention | Output clamped to ~2 V from rails when inputs exceed VICM - prevents system lockup or downstream damage in overvoltage transients. |
| Unity-gain stable | 60° phase margin with 1 MΩ || 35 pF load - eliminates need for external compensation in gain-of-1 configurations like I/V converters or buffers. |
| Extended temperature range | Specified from −40°C to +125°C - supports operation in automotive engine compartments, industrial PLC modules, and outdoor instrumentation. |
Applications
| Precision Instrumentation | Professional Audio |
|---|---|
|
Use Scenario: Amplifying microvolt-level signals from thermocouples, RTDs, or bridge sensors in automated test equipment. IC Role / Device Role / Timing Role: Low-noise, low-drift instrumentation amplifier front end with DC-coupled gain and offset trimming. Use Value: 2.8 nV/√Hz noise and 1 mV max VOS ensure ≤0.5 μV total input-referred error in 100× gain paths across −40°C to +125°C. |
Use Scenario: Driving balanced line outputs in studio-grade DACs and headphone amplifiers. IC Role / Device Role / Timing Role: Differential-to-single-ended converter and low-pass filter stage in DAC reconstruction path. Use Value: 0.0002% THD+N and 12 V/μs slew rate enable clean 20 kHz full-scale audio delivery without intermodulation or slew distortion. |
| Active Filters | Low-Noise Amplifier Front End |
|
Use Scenario: Implementing 4th-order Sallen-Key or state-variable filters in medical EEG/ECG signal conditioning. IC Role / Device Role / Timing Role: Dual-channel gain block and filter integrator with matched AC response and low phase error. Use Value: 6.5 MHz GBP and 60° phase margin support stable 200 kHz cutoff filters with <0.1° group delay variation across passband. |
Use Scenario: First-stage amplification of piezoelectric sensor outputs in vibration monitoring systems. IC Role / Device Role / Timing Role: High-Z, low-noise charge amplifier or voltage buffer preceding ADC sampling. Use Value: 500 MΩ input resistance and 1.2 pA/√Hz current noise minimize loading and Johnson noise in high-impedance (>1 MΩ) sensor nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8672 | Higher offset drift (1.2 µV/°C vs. 0.3 µV/°C typ), higher noise (4.8 nV/√Hz), lower slew rate (2.5 V/μs) | Better dc precision but unsuitable for audio or fast settling; preferred in low-frequency, high-accuracy DC measurement only | Select AD8672 only when ultra-low drift dominates over noise/speed requirements; avoid for audio or wideband filtering. |
| OP275 | Higher noise (4.5 nV/√Hz), higher supply current (4.5 mA/amp), no phase reversal protection | Lacks integrated fault protection and consumes >2× more power; requires external protection circuitry for robustness | Choose OP275 only in legacy designs where pin compatibility is mandatory and thermal/noise margins allow; ADA4075-2 offers superior noise/power/protection trade-off. |
Compared with AD8672 and OP275, ADA4075-2 uniquely combines ultralow noise (2.8 nV/√Hz), low power (1.8 mA/amp), and built-in phase reversal protection-making it optimal for new audio, instrumentation, and space-constrained industrial designs where signal fidelity and reliability are co-prioritized.
Availability
ADA4075-2 is available at Aetrix Electronics and suitable for precision instrumentation, professional audio equipment, and active filter designs requiring stable component supply, long-term lifecycle support, and dual-package flexibility (SOIC/LFCSP).
Supply support for ADA4075-2 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 ADA4075-2 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 for ADA4075-2?
The absolute maximum supply voltage for ADA4075-2 is ±20 V. Operation beyond this rating risks permanent damage. The device is fully specified from ±4.5 V to ±18 V, with recommended operation at ±15 V for optimal noise and distortion performance. At ±18 V, output swing extends to ±15.8 V (RL = 600 Ω), supporting high-headroom audio and industrial signal chains.
Does ADA4075-2 require external compensation for unity-gain stability?
No, ADA4075-2 is unity-gain stable without external compensation. Its internal design provides 60° phase margin with a 1 MΩ load and 35 pF capacitance, enabling direct use in gain-of-1 configurations such as voltage followers, I/V converters, and buffer stages. This eliminates layout complexity and component count in precision signal paths.
How does ADA4075-2 handle input overvoltage conditions?
ADA4075-2 includes internal clamp diodes limiting differential input voltage to ±1.2 V. When exceeded, large currents may flow-so external current-limiting resistors (e.g., 1 kΩ) are recommended. Unlike many op amps, ADA4075-2 omits internal series resistors to preserve its 2.8 nV/√Hz noise floor, making external protection essential for robustness without degrading noise performance.
Can ADA4075-2 drive 600 Ω loads effectively?
Yes, ADA4075-2 delivers ±12.4 V output swing into 600 Ω at ±15 V supply, with THD+N maintained at 0.0002% at 1 kHz. Its 40 mA short-circuit current and 0.1 Ω closed-loop output impedance ensure stable drive capability. For sustained 600 Ω operation, thermal derating in LFCSP package is advised due to higher power dissipation versus SOIC.
What is the guaranteed input offset voltage specification for ADA4075-2 over temperature?
The input offset voltage for ADA4075-2 is guaranteed ≤1.2 mV over the full operating temperature range of −40°C to +125°C (SOIC) and ≤1.5 mV (LFCSP). At 25°C, typical VOS is 0.2–0.3 mV. This tight dc specification enables accurate DC-coupled gain stages in weigh scales, pressure transducers, and calibration equipment without frequent nulling.
ADA4075-2ACPZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iPolar®
- Package/Case:
- 8-UFDFN, CSP
- 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:
- 300 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-LFCSP-UD (2x2)
ADA4075-2ACPZ-R7 FAQ
1.How can I place an order for ADA4075-2ACPZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4075-2ACPZ-R7 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 ADA4075-2ACPZ-R7 reliable?
The price and inventory of ADA4075-2ACPZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4075-2ACPZ-R7 is usually 5 days.
3.What payment methods are accepted for ADA4075-2ACPZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4075-2ACPZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4075-2ACPZ-R7?
ADA4075-2ACPZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4075-2ACPZ-R7 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 ADA4075-2ACPZ-R7?
For technical support, including ADA4075-2ACPZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4075-2ACPZ-R7 requirements.
6.How does Aetrix verify that ADA4075-2ACPZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADA4075-2ACPZ-R7 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 ADA4075-2ACPZ-R7 meets industry standards.
7.What is the process for return or replacement of ADA4075-2ACPZ-R7?
All ADA4075-2ACPZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4075-2ACPZ-R7, 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 ADA4075-2ACPZ-R7 part is unused and in its original packaging.
Return procedure for ADA4075-2ACPZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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