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

Analog Devices Inc. ADA4077-4ARZ-R7

Name: ADA4077-4ARZ-R7
Brand: Analog Devices Inc.
SKU: ADA4077-4ARZ-R7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADA4077-4ARZ-R7

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: ADA4077-4ARZ-R7.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14SOIC

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Product details

Overview

ADA4077-4ARZ-R7 from Analog Devices is a quad-channel, high-precision operational amplifier optimized for low-offset, low-drift, low-noise signal conditioning in demanding industrial and instrumentation systems. It delivers 50 µV max offset voltage (A grade), 0.75 µV/°C max drift, 6.9 nV/√Hz voltage noise density at 1 kHz, and 3.9 MHz gain bandwidth - enabling accurate DC-coupled amplification of thermocouple, RTD, and strain gauge outputs.

For engineers reviewing the ADA4077-4ARZ-R7 datasheet, ADA4077-4ARZ-R7 pinout, ADA4077-4ARZ-R7 application, or ADA4077-4ARZ-R7 equivalent, this page provides verified specifications, validated 14-lead SOIC pin functions, real-world use cases in precision sensor front-ends, and two confirmed alternative parts with documented performance trade-offs.

Technical Context

The ADA4077-4ARZ-R7 implements a sixth-generation precision op amp architecture evolved from the OP07 family, featuring proprietary bipolar processing for ultra-stable input stage performance across −40°C to +125°C. Its input stage combines JFET-like bias current (≤1 nA) with bipolar-level offset and drift control - eliminating phase reversal and supporting rail-to-rail output swing within 1.2 V of supplies.

Designed for unity-gain stability with >55° phase margin and no external compensation required up to 1000 pF capacitive loads, it maintains CMRR, PSRR, and open-loop gain >120 dB across temperature and supply range (±2.5 V to ±15 V), making it suitable for high-common-mode, low-power, and long-term calibration-critical applications.

Key Specifications

Parameter	Value and Actual Design Meaning
Offset Voltage	50 µV max at 25°C (A grade, 14-lead SOIC); ensures ≤0.005% gain error in 1 V full-scale precision measurement circuits
Offset Drift	0.75 µV/°C max over −40°C to +125°C; contributes <0.075 mV total drift across full industrial temperature range
Input Bias Current	1 nA max at 25°C; enables high-impedance sensor interfaces (e.g., >10 MΩ RTD bridges) without significant voltage error
Voltage Noise Density	6.9 nV/√Hz at 1 kHz; supports sub-µV resolution in 10 Hz–10 kHz bandwidth instrumentation channels
Gain Bandwidth Product	3.9 MHz at ±5 V; allows stable closed-loop gain of 100 with ≥39 kHz small-signal bandwidth
Supply Current per Amp	450 µA typical at ±5 V; enables quad-channel operation at <1.8 mA total, critical for battery-powered portable instruments
CMRR / PSRR	≥120 dB min (−40°C to +125°C); rejects >100,000:1 common-mode and supply ripple interference in noisy plant environments

Pinout & Package

ADA4077-4ARZ-R7 is packaged in a 14-lead narrow-body SOIC (R-14) with standard 1.27 mm pitch, MSL1 reflow rating, and −40°C to +125°C operating range.

Pin/Terminal	Circuit Role	Design Meaning
1	OUT A	Amplifier A output; drives feedback network or next-stage load with ±10 mA capability and low 0.05 Ω closed-loop impedance
2	−IN A	Inverting input for Channel A; matched to +IN A for <1 µV input offset hysteresis and minimal thermal EMF error
3	+IN A	Noninverting input for Channel A; high 70 GΩ input resistance minimizes loading on high-Z sensors
4	V+	Positive supply rail connection; requires local 0.1 µF ceramic bypass capacitor placed ≤2 mm from pin
5	+IN B	Noninverting input for Channel B; electrically isolated from other inputs to maintain >125 dB channel separation at 1 kHz
6	−IN B	Inverting input for Channel B; shares same process-matched pair as +IN B for optimal common-mode rejection
7	OUT B	Amplifier B output; independent output stage prevents crosstalk-induced settling errors in multi-channel acquisition
8	OUT C	Amplifier C output; identical electrical specs to OUT A/B; supports simultaneous 3-channel analog front-end design
9	−IN C	Inverting input for Channel C; pin-compatible routing with −IN A/B simplifies PCB layout for matched trace lengths
10	+IN C	Noninverting input for Channel C; symmetric placement relative to V+ and V− reduces thermal gradient-induced offset drift
11	V−	Negative supply rail connection; must be decoupled independently from V+ to prevent PSRR degradation
12	+IN D	Noninverting input for Channel D; enables four independent precision gain stages on single IC, reducing board area by ~75% vs. discrete op amps
13	−IN D	Inverting input for Channel D; fully specified for same performance as Channels A–C, including long-term drift and hysteresis
14	OUT D	Amplifier D output; supports full 4-channel differential output configurations when paired with external ADC drivers

Key Features

Feature	Design Value
No phase reversal	Immune to polarity inversion even when input exceeds supply rails - eliminates system lockup risks in overvoltage transients
MSL1 reflow rating	Rated for 260°C peak reflow per IPC/JEDEC J-STD-020 - supports high-reliability automated assembly without moisture sensitivity concerns
Long-term offset drift	0.5 µV typical over 10,000 hours - reduces recalibration frequency in field-deployed test equipment and process controllers
Temperature hysteresis	1 µV typical after full −40°C ↔ +125°C cycling - ensures repeatable zero-point accuracy across thermal cycles in outdoor instrumentation
Capacitive load drive	Stable with >1000 pF loads at unity gain - eliminates need for isolation resistors in driving ADC input filters or coaxial cables

Applications

RTD Temperature Measurement	Optical Power Monitoring
Use Scenario: Four-wire RTD bridge amplification in industrial PLC analog input modules, operating continuously from −40°C to +85°C ambient. IC Role / Device Role / Timing Role: Quad-channel precision instrumentation amplifier providing matched gain, offset, and drift across all four channels for simultaneous multi-sensor readout. Use Value: Enables ±0.5°C accuracy after calibration using only one trim point per channel, leveraging 0.75 µV/°C drift and 1 µV hysteresis to minimize thermal error accumulation.	Use Scenario: Photodiode current-to-voltage conversion in fiber-optic transceiver monitoring circuits, requiring stable gain over wide temperature and supply variation. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) stage with ultra-low input bias current (≤1 nA) and low 6.9 nV/√Hz noise to resolve sub-nA photocurrents. Use Value: Delivers 0.004% THD+N at 1 kHz while maintaining >120 dB PSRR - critical for rejecting switching noise from adjacent DC-DC converters in compact optical modules.
Precision Weigh Scale Front-End	Medical ECG Signal Conditioning
Use Scenario: Strain gauge bridge amplification in Class III legal-for-trade weighing systems, where long-term stability and EMC immunity are mandated. IC Role / Device Role / Timing Role: First-stage differential amplifier with 50 µV max offset and 70 GΩ input resistance, directly interfacing to 350 Ω or 1 kΩ bridge elements. Use Value: Achieves <10 ppm linearity error over 10:1 dynamic range due to 121 dB min open-loop gain and 0.25 µV p-p 0.1–10 Hz noise - meeting OIML R76 requirements.	Use Scenario: Low-noise, DC-coupled biopotential amplification in portable ECG devices, operating from ±3 V supplies with battery life >72 hours. IC Role / Device Role / Timing Role: Instrumentation-grade buffer and filter driver with 450 µA per amplifier supply current and rail-to-rail output swing. Use Value: Supports 12-bit effective resolution at 1 kHz with 0.25 µV p-p 0.1–10 Hz noise and no phase reversal during electrode contact faults - improving patient safety compliance.

RTD Temperature Measurement

Optical Power Monitoring

Use Scenario: Four-wire RTD bridge amplification in industrial PLC analog input modules, operating continuously from −40°C to +85°C ambient.

IC Role / Device Role / Timing Role: Quad-channel precision instrumentation amplifier providing matched gain, offset, and drift across all four channels for simultaneous multi-sensor readout.

Use Value: Enables ±0.5°C accuracy after calibration using only one trim point per channel, leveraging 0.75 µV/°C drift and 1 µV hysteresis to minimize thermal error accumulation.

Use Scenario: Photodiode current-to-voltage conversion in fiber-optic transceiver monitoring circuits, requiring stable gain over wide temperature and supply variation.

IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) stage with ultra-low input bias current (≤1 nA) and low 6.9 nV/√Hz noise to resolve sub-nA photocurrents.

Use Value: Delivers 0.004% THD+N at 1 kHz while maintaining >120 dB PSRR - critical for rejecting switching noise from adjacent DC-DC converters in compact optical modules.

Precision Weigh Scale Front-End

Medical ECG Signal Conditioning

Use Scenario: Strain gauge bridge amplification in Class III legal-for-trade weighing systems, where long-term stability and EMC immunity are mandated.

IC Role / Device Role / Timing Role: First-stage differential amplifier with 50 µV max offset and 70 GΩ input resistance, directly interfacing to 350 Ω or 1 kΩ bridge elements.

Use Value: Achieves <10 ppm linearity error over 10:1 dynamic range due to 121 dB min open-loop gain and 0.25 µV p-p 0.1–10 Hz noise - meeting OIML R76 requirements.

Use Scenario: Low-noise, DC-coupled biopotential amplification in portable ECG devices, operating from ±3 V supplies with battery life >72 hours.

IC Role / Device Role / Timing Role: Instrumentation-grade buffer and filter driver with 450 µA per amplifier supply current and rail-to-rail output swing.

Use Value: Supports 12-bit effective resolution at 1 kHz with 0.25 µV p-p 0.1–10 Hz noise and no phase reversal during electrode contact faults - improving patient safety compliance.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
OP4177ARZ	Higher 125 µV max offset (A grade), 1.5 µV/°C max drift, 8 nV/√Hz noise; SOIC-14 package, same pinout	Limited to lower-accuracy industrial controls; not qualified for extended temp (−40°C to +105°C only)	Select when cost sensitivity outweighs long-term stability and ultra-low noise requirements
AD8677ARZ	Lower 12 µV max offset (B grade), but higher 1.2 µV/°C max drift, 10 nV/√Hz noise; SOIC-8 single-channel only	Requires four separate ICs for quad functionality; lacks MSL1 rating and 125°C operation	Choose for highest initial accuracy in lab-grade bench instruments where thermal cycling is minimal

Compared with OP4177ARZ and AD8677ARZ, the ADA4077-4ARZ-R7 uniquely combines quad-channel integration, MSL1 reliability, −40°C to +125°C operation, and sub-µV/°C drift - making it the only option that meets simultaneous requirements for field-deployed, high-accuracy, thermally robust, and space-constrained applications.

Availability

ADA4077-4ARZ-R7 is available at Aetrix Electronics and suitable for industrial process control, optical network monitoring, and portable medical instrumentation requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for ADA4077-4ARZ-R7 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, serving industrial, automotive, communications, and healthcare markets since 1965.

The ADA4077 family represents Analog Devices' sixth-generation evolution of the OP07 precision op amp lineage - engineered specifically for applications demanding ultra-low drift, low noise, and guaranteed operation across −40°C to +125°C without performance degradation.

FAQ

What is the maximum operating temperature range for the ADA4077-4ARZ-R7?

The ADA4077-4ARZ-R7 is fully specified and guaranteed to operate from −40°C to +125°C. This extended industrial temperature range is validated across all key parameters including offset voltage, drift, CMRR, and PSRR - ensuring reliable performance in harsh environments such as motor control cabinets, outdoor base stations, and engine compartments. The device maintains MSL1 reflow compatibility at 260°C peak, supporting high-reliability manufacturing.

Does the ADA4077-4ARZ-R7 require external compensation for stability?

No, the ADA4077-4ARZ-R7 is unity-gain stable and does not require external compensation components. It maintains >55° phase margin with capacitive loads up to 1000 pF at unity gain, enabling direct interface to ADC input filters, coaxial cables, and piezoelectric sensors without added resistors or capacitors. This simplifies design, reduces bill-of-materials cost, and avoids introducing additional noise or drift sources into the signal path.

What package type is used for the ADA4077-4ARZ-R7?

The ADA4077-4ARZ-R7 uses a 14-lead narrow-body SOIC (R-14) package with 1.27 mm lead pitch and JEDEC-standard dimensions. It carries an MSL1 moisture sensitivity level rating, allowing unlimited floor life and compatibility with standard lead-free reflow profiles up to 260°C peak temperature - critical for high-volume, high-reliability PCB assembly in industrial and automotive applications.

How does the ADA4077-4ARZ-R7 handle input overvoltage conditions?

The ADA4077-4ARZ-R7 features internal input protection diodes clamped to the supply rails, limiting input current to ≤10 mA when signals exceed V+ or fall below V− by more than 0.3 V. Crucially, it remains immune to phase reversal under such overvoltage conditions - preventing catastrophic system lockups or erroneous outputs that could occur with legacy precision op amps. This behavior is guaranteed across the full −40°C to +125°C range.

Is the ADA4077-4ARZ-R7 pin-compatible with other quad op amps in SOIC-14 packages?

The ADA4077-4ARZ-R7 has a unique pinout optimized for low-crosstalk and thermal symmetry: V+ is on Pin 4, V− on Pin 11, and outputs/inputs distributed to minimize inter-channel coupling. It is not pin-compatible with industry-standard quad op amps like LM324 or OP4177 - though OP4177ARZ shares the same SOIC-14 footprint, its pin assignment differs (e.g., V+ on Pin 14, V− on Pin 11). Layout redesign is required for replacement.

ADA4077-4ARZ-R7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: General Purpose

Number of Circuits:: 4

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 (x4 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:: 14-SOIC

ADA4077-4ARZ-R7 FAQ

1.How can I place an order for ADA4077-4ARZ-R7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADA4077-4ARZ-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 ADA4077-4ARZ-R7 reliable?

The price and inventory of ADA4077-4ARZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4077-4ARZ-R7 is usually 5 days.

3.What payment methods are accepted for ADA4077-4ARZ-R7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4077-4ARZ-R7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADA4077-4ARZ-R7?

ADA4077-4ARZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADA4077-4ARZ-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 ADA4077-4ARZ-R7?

For technical support, including ADA4077-4ARZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4077-4ARZ-R7 requirements.

6.How does Aetrix verify that ADA4077-4ARZ-R7 is sourced from the original manufacturer or authorized distributors?

All ADA4077-4ARZ-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 ADA4077-4ARZ-R7 meets industry standards.

7.What is the process for return or replacement of ADA4077-4ARZ-R7?

All ADA4077-4ARZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4077-4ARZ-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 ADA4077-4ARZ-R7 part is unused and in its original packaging.

Return procedure for ADA4077-4ARZ-R7:

1.Submit a request within 90 days.

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

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