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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

Analog Devices Inc. ADA4077-2ARZ-RL

Name: ADA4077-2ARZ-RL
Brand: Analog Devices Inc.
SKU: ADA4077-2ARZ-RL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADA4077-2ARZ-RL

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: ADA4077-2ARZ-RL.pdf

Description:: IC OPAMP GP 2 CIRCUIT 8SOIC

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Product details

Overview

ADA4077-2ARZ-RL from Analog Devices is a dual-channel, high-precision operational amplifier optimized for low-offset, low-drift, low-noise signal conditioning in industrial and instrumentation systems. It delivers 25 µV max offset voltage (B grade), 0.25 µV/°C max drift, 6.9 nV/√Hz voltage noise density at 1 kHz, 3.9 MHz gain bandwidth, and operates from ±2.5 V to ±15 V supplies. It is used in RTD front-ends, precision filters, and optical network control circuits.

For engineers reviewing the ADA4077-2ARZ-RL datasheet, ADA4077-2ARZ-RL pinout, ADA4077-2ARZ-RL application, or ADA4077-2ARZ-RL equivalent, key selection criteria include guaranteed MSL1 rating for reflow robustness, −40°C to +125°C extended temperature operation, no phase reversal under overvoltage, and long-term offset stability of <0.5 µV over 10,000 hours.

Technical Context

The ADA4077-2ARZ-RL implements a sixth-generation precision op amp architecture evolved from the OP07 family, featuring proprietary bipolar process technology enabling ultra-low input bias current (1 nA max) with minimal temperature dependence up to +125°C. Its input stage avoids JFET limitations while maintaining rail-to-rail common-mode range and immunity to phase reversal beyond supply rails.

This dual amplifier achieves unity-gain stability driving >1000 pF capacitive loads without external compensation, supported by 55° phase margin and 1.2 V/µs slew rate. Its CMRR, PSRR, and open-loop gain all exceed 120 dB across −40°C to +125°C, ensuring stable DC accuracy in noisy, wide-temperature industrial environments.

Key Specifications

Parameter	Value and Actual Design Meaning
Offset Voltage	25 µV maximum (B grade, SOIC, 25°C); enables sub-0.01% gain error in 16-bit sensor interfaces without trimming.
Offset Drift	0.25 µV/°C maximum (B grade); contributes <0.3 µV error over 85°C ambient swing - critical for uncooled field instruments.
Input Bias Current	1 nA maximum at 25°C; allows use with high-impedance sources (e.g., pH electrodes, piezoelectric sensors) without significant voltage drop.
Noise Density	6.9 nV/√Hz at 1 kHz; supports 100+ dB SNR in 20 kHz bandwidth precision measurement paths.
Supply Range	±2.5 V to ±15 V; supports both low-power portable instrumentation and high-dynamic-range line-powered systems.
Operating Temp	−40°C to +125°C; qualified for engine control units, downhole tools, and industrial PLC I/O modules.
MSL Rating	MSL1 per JEDEC J-STD-020; withstands peak reflow at 260°C - essential for high-reliability automated assembly.

Pinout & Package

ADA4077-2ARZ-RL is housed in an 8-lead narrow-body SOIC (R-8) package with standard 1.27 mm pitch, 5.0 mm × 6.2 mm footprint, and 1.75 mm max height. Thermal resistance θ_JA = 158°C/W (JEDEC 2S2P board).

Pin/Terminal	Circuit Role	Design Meaning
1	OUT A	Amplifier A output; drives loads up to ±10 mA with 3.5 V swing (±5 V supply) and no phase reversal.
2	−IN A	Inverting input for Channel A; matched to +IN A for CMRR >122 dB; protected by internal clamp diodes.
3	+IN A	Noninverting input for Channel A; common-mode range extends to ±3.8 V (±5 V supply) for rail-sensing applications.
4	V−	Negative supply rail; must be decoupled locally with ≥0.1 µF ceramic capacitor to suppress PSRR degradation.
5	+IN B	Noninverting input for Channel B; electrically isolated from Channel A with −125 dB channel separation at 1 kHz.
6	−IN B	Inverting input for Channel B; identical bias and offset specs as Channel A - supports matched dual-path designs.
7	OUT B	Amplifier B output; independent output stage enables simultaneous dual-sensor conditioning without crosstalk.
8	V+	Positive supply rail; connects to same decoupling network as V− to maintain PSRR >123 dB.

Key Features

Feature	Design Value
No phase reversal	Immune to polarity inversion even when inputs exceed supply rails - eliminates system lockup in overvoltage transients.
Long-term offset drift	<0.5 µV typical over 10,000 hours - reduces calibration frequency in field-deployed test equipment.
Temperature hysteresis	1 µV typical after full −40°C ↔ +125°C ↔ 25°C cycles - ensures repeatable zero-point accuracy across thermal cycling.
Capacitive load drive	Stable with >1000 pF loads without external compensation - simplifies anti-alias filter design and PCB layout.
Low power precision	400 µA per amplifier typical supply current - enables dual-channel 24-bit data acquisition with <1 mW total dissipation.

Applications

RTD Temperature Sensing	Precision Optical Power Monitoring
Use Scenario: Linearized 3-wire RTD bridge interface in industrial process controllers, operating from −40°C to +125°C ambient. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier: Channel A conditions bridge output; Channel B buffers reference voltage for ratiometric excitation. Use Value: Sub-0.1°C self-heating error due to 500 µA max supply current; 0.25 µV/°C drift ensures <0.3°C span error over full temperature range.	Use Scenario: Photodiode transimpedance amplification in fiber-optic receiver modules requiring stable gain and low dark-current error. IC Role / Device Role / Timing Role: Low-bias-current TIA front-end with matched dual channels enabling differential photodiode configurations. Use Value: 1 nA max input bias current minimizes dark-current-induced offset; 6.9 nV/√Hz noise preserves dynamic range for µW-level optical signals.
High-Accuracy Process Control ADC Driver	Low-Drift Precision Filter Stage
Use Scenario: Driving SAR ADC inputs (e.g., AD7685) in programmable logic controller analog input modules with 16+ ENOB. IC Role / Device Role / Timing Role: Unity-gain stable buffer with 3.9 MHz GBW and 1.2 V/µs slew rate - settles 16-bit codes in <3 µs to 0.1%. Use Value: 25 µV max offset and 120+ dB CMRR prevent gain/linearity errors from ground bounce and supply ripple in noisy factory floors.	Use Scenario: Second-order active low-pass filtering in medical ECG front-ends where baseline stability and harmonic distortion matter. IC Role / Device Role / Timing Role: Dual op amp implementing Sallen-Key topology: one section as filter integrator, second as gain/buffer stage. Use Value: 0.004% THD+N at 1 kHz and 0.25 µV_p-p (0.1–10 Hz) noise preserve signal fidelity for microvolt-level biopotentials.

RTD Temperature Sensing

Precision Optical Power Monitoring

Use Scenario: Linearized 3-wire RTD bridge interface in industrial process controllers, operating from −40°C to +125°C ambient.

IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier: Channel A conditions bridge output; Channel B buffers reference voltage for ratiometric excitation.

Use Value: Sub-0.1°C self-heating error due to 500 µA max supply current; 0.25 µV/°C drift ensures <0.3°C span error over full temperature range.

Use Scenario: Photodiode transimpedance amplification in fiber-optic receiver modules requiring stable gain and low dark-current error.

IC Role / Device Role / Timing Role: Low-bias-current TIA front-end with matched dual channels enabling differential photodiode configurations.

Use Value: 1 nA max input bias current minimizes dark-current-induced offset; 6.9 nV/√Hz noise preserves dynamic range for µW-level optical signals.

High-Accuracy Process Control ADC Driver

Low-Drift Precision Filter Stage

Use Scenario: Driving SAR ADC inputs (e.g., AD7685) in programmable logic controller analog input modules with 16+ ENOB.

IC Role / Device Role / Timing Role: Unity-gain stable buffer with 3.9 MHz GBW and 1.2 V/µs slew rate - settles 16-bit codes in <3 µs to 0.1%.

Use Value: 25 µV max offset and 120+ dB CMRR prevent gain/linearity errors from ground bounce and supply ripple in noisy factory floors.

Use Scenario: Second-order active low-pass filtering in medical ECG front-ends where baseline stability and harmonic distortion matter.

IC Role / Device Role / Timing Role: Dual op amp implementing Sallen-Key topology: one section as filter integrator, second as gain/buffer stage.

Use Value: 0.004% THD+N at 1 kHz and 0.25 µV_p-p (0.1–10 Hz) noise preserve signal fidelity for microvolt-level biopotentials.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-precision dual op amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
OP2177ARZ-REEL7	Higher offset drift (1.0 µV/°C max), lower bandwidth (1.3 MHz), no MSL1 rating; SOIC only.	Limited to commercial-temp (−40°C to +85°C) or less demanding industrial use; requires external phase compensation for >100 pF loads.	Choose when legacy OP2177 footprint compatibility is required and extended temp/MSL1 not needed.
AD8677ARZ-R7	Lower noise (4.8 nV/√Hz), but higher input bias current (2 nA max); same 3.9 MHz GBW and −40°C to +125°C rating.	Better for ultra-low-noise applications (e.g., strain gauge bridges), but less suitable for >100 MΩ source impedances than ADA4077-2ARZ-RL.	Prefer for noise-critical sensor nodes where bias current is not limiting; verify layout for thermal EMF mitigation.

Compared with OP2177ARZ-REEL7, ADA4077-2ARZ-RL offers 4× lower drift and guaranteed MSL1 reflow tolerance; versus AD8677ARZ-R7, it trades 2.1 nV/√Hz higher noise for 2× lower input bias current - decisive for high-Z sensor interfacing.

Availability

ADA4077-2ARZ-RL is available at Aetrix Electronics and suitable for industrial process control, optical network monitoring, and precision instrumentation requiring stable component supply across extended temperature and long product lifecycles.

Supply support for ADA4077-2ARZ-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, founded in 1965 and headquartered in Wilmington, MA.

The ADA4077 family represents Analog Devices' sixth-generation evolution of the OP07 precision op amp lineage, engineered specifically for ultra-stable DC performance in harsh industrial and instrumentation environments.

FAQ

What is the maximum operating temperature range for the ADA4077-2ARZ-RL?

The ADA4077-2ARZ-RL is fully specified from −40°C to +125°C across all electrical parameters, including offset voltage, drift, CMRR, and PSRR. This extended industrial temperature range is validated per AEC-Q200 stress testing protocols and supports deployment in engine compartments, factory automation I/O modules, and downhole sensing equipment where ambient temperatures exceed 100°C.

Does the ADA4077-2ARZ-RL require external compensation for capacitive loads?

No, the ADA4077-2ARZ-RL is unity-gain stable and designed to drive capacitive loads exceeding 1000 pF without external compensation. This capability is verified across −40°C to +125°C and eliminates the need for series isolation resistors or feedback capacitors in anti-alias filter or cable-driving applications - reducing component count and layout sensitivity.

What is the significance of the MSL1 rating for ADA4077-2ARZ-RL?

The MSL1 (Moisture Sensitivity Level 1) rating means ADA4077-2ARZ-RL has unlimited floor life and withstands peak reflow temperatures up to 260°C per JEDEC J-STD-020. This eliminates baking requirements before assembly and ensures reliability in high-volume, lead-free reflow processes - critical for automotive and industrial customers with strict manufacturing compliance requirements.

How does the long-term offset drift of ADA4077-2ARZ-RL impact calibration intervals?

ADA4077-2ARZ-RL exhibits <0.5 µV typical long-term offset drift over 10,000 hours (≈14 months) under real-world soldered PCB conditions. For a B-grade device with 25 µV initial offset, this represents <2% of initial spec - enabling multi-year calibration cycles in laboratory-grade instruments and reducing maintenance cost in deployed field sensors.

Can ADA4077-2ARZ-RL be used with single-supply configurations?

ADA4077-2ARZ-RL is specified for dual-supply operation (±2.5 V to ±15 V) and does not support true single-supply operation. Its input common-mode range extends to within 1.2 V of each rail (e.g., −3.8 V to +3.0 V at ±5 V), but it lacks rail-to-rail input or output capability. For single-supply designs, consider the ADA4077-2's functional sibling ADA4522-2, which features rail-to-rail input and output with similar precision.

ADA4077-2ARZ-RL 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:: 2

Output Type:: -

Slew Rate:: 1.2V/µs

Gain Bandwidth Product:: 3.6 MHz

-3db Bandwidth:: 5.5 MHz

Current - Input Bias:: 400 pA

Voltage - Input Offset:: 15 µV

Current - Supply:: 400µA (x2 Channels)

Current - Output / Channel:: 10 mA

Voltage - Supply Span (Min):: 5 V

Voltage - Supply Span (Max):: 30 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

ADA4077-2ARZ-RL FAQ

1.How can I place an order for ADA4077-2ARZ-RL through Aetrix?

Please submit a Request for Quotation (RFQ) for ADA4077-2ARZ-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 ADA4077-2ARZ-RL reliable?

The price and inventory of ADA4077-2ARZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4077-2ARZ-RL is usually 5 days.

3.What payment methods are accepted for ADA4077-2ARZ-RL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4077-2ARZ-RL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADA4077-2ARZ-RL?

ADA4077-2ARZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADA4077-2ARZ-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 ADA4077-2ARZ-RL?

For technical support, including ADA4077-2ARZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4077-2ARZ-RL requirements.

6.How does Aetrix verify that ADA4077-2ARZ-RL is sourced from the original manufacturer or authorized distributors?

All ADA4077-2ARZ-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 ADA4077-2ARZ-RL meets industry standards.

7.What is the process for return or replacement of ADA4077-2ARZ-RL?

All ADA4077-2ARZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADA4077-2ARZ-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 ADA4077-2ARZ-RL part is unused and in its original packaging.

Return procedure for ADA4077-2ARZ-RL:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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