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

Analog Devices Inc. ADA4077-1ARZ-R7

Name: ADA4077-1ARZ-R7
Brand: Analog Devices Inc.
SKU: ADA4077-1ARZ-R7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADA4077-1ARZ-R7

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

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

Datasheet:: ADA4077-1ARZ-R7.pdf

Description:: IC OPAMP GP 1 CIRCUIT 8SOIC

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Product details

Overview

ADA4077-1ARZ-R7 from Analog Devices is a single-channel, high-precision operational amplifier optimized for low-offset, low-drift, low-noise signal conditioning in demanding 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, optical network control circuits, and precision sensor interfaces where long-term stability and MSL1 reflow compatibility are critical.

For engineers reviewing the ADA4077-1ARZ-R7 datasheet, ADA4077-1ARZ-R7 pinout, ADA4077-1ARZ-R7 application, or ADA4077-1ARZ-R7 equivalent, key selection criteria include guaranteed offset and drift specs over −40°C to +125°C, no phase reversal behavior, capacitive load drive capability >1000 pF, and SOIC-8 packaging with MSL1 rating for high-reliability automated assembly.

Technical Context

The ADA4077-1ARZ-R7 implements a sixth-generation precision op amp architecture evolved from the OP07 family, using proprietary linear process technology to achieve ultra-low input bias current (1 nA max) while maintaining insensitivity to temperature up to +125°C. Its input stage avoids JFET limitations, enabling stable CMRR (>120 dB), PSRR (>120 dB), and open-loop gain (>120 dB) across full industrial temperature range.

This amplifier features unity-gain stability, no phase reversal under overvoltage conditions, and robust output drive into capacitive loads without external compensation. Its design supports precision DC-coupled applications requiring <0.5 µV typical long-term drift (10,000 hrs) and only 1 µV typical temperature hysteresis - critical for unattended calibration cycles and high-accuracy measurement systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Offset Voltage	25 µV maximum at 25°C (B grade, SOIC-8); ensures minimal DC error in precision gain stages and bridge sensor amplifiers.
Offset Drift	0.25 µV/°C maximum (B grade); enables sub-1 µV total drift over 85°C ambient swing - critical for thermal-stable instrumentation.
Voltage Noise Density	6.9 nV/√Hz at 1 kHz; supports low-noise amplification of microvolt-level sensor outputs without significant SNR degradation.
Gain Bandwidth Product	3.9 MHz at ±5 V; allows stable closed-loop operation up to ~5.9 MHz (AV = +1), suitable for anti-aliasing and active filter designs.
Supply Current	400 µA per amplifier typical; enables low-power precision performance in battery-backed or energy-constrained modules.
Operating Temperature	−40°C to +125°C; qualified for extended industrial environments including motor control enclosures and outdoor telecom equipment.
MSL Rating	MSL1 per JEDEC J-STD-020; withstands peak reflow temperatures up to 260°C - compatible with lead-free high-volume SMT assembly.

Pinout & Package

ADA4077-1ARZ-R7 is housed in an 8-lead SOIC (R-8) package with standard 1.27 mm pitch and 5.0 mm × 6.2 mm footprint. The package is RoHS-compliant, halogen-free, and rated MSL1 for uncompromised manufacturability.

Pin	Circuit Role	Design Meaning
1, 5, 8	NIC	Not internally connected - must be left floating or grounded per layout best practices; no internal function or bias path.
2	−IN	Inverting input terminal; high-impedance node (70 GΩ) with 5 pF common-mode capacitance - sensitive to PCB leakage and guard ring requirements.
3	+IN	Noninverting input terminal; matched to −IN for optimal CMRR; requires symmetrical trace routing and guarding in high-precision layouts.
4	V−	Negative supply rail connection; must be bypassed with ≥0.1 µF ceramic capacitor placed within 2 mm of pin to suppress PSRR degradation.
6	OUT	Amplifier output; capable of sourcing/sinking ±10 mA with <1.6 V dropout; stable driving >1000 pF without external compensation.
7	V+	Positive supply rail connection; shares same bypassing requirement as V−; dual-supply symmetry improves PSRR and common-mode rejection.

Key Features

Feature	Design Value
No phase reversal	Immune to polarity inversion even when inputs exceed supply rails - eliminates risk of latch-up or system lockup in overvoltage transients.
Long-term offset stability	0.5 µV typical drift over 10,000 hours - reduces recalibration frequency in metrology-grade instruments and process analyzers.
Temperature hysteresis	1 µV typical after full −40°C ↔ +125°C ↔ 25°C cycling - ensures repeatable zero-point accuracy across thermal excursions.
Capacitive load drive	Stable with >1000 pF output load - enables direct interface to ADC input filters, coaxial cables, and piezoelectric sensors without isolation resistors.
High CMRR/PSRR	≥120 dB minimum over −40°C to +125°C - rejects power supply ripple and common-mode interference in noisy industrial environments.

Applications

RTD Temperature Sensing	Optical Power Monitoring
Use Scenario: Amplifying low-level differential voltage from a 3-wire Pt100 RTD bridge in HVAC control panels operating from −25°C to +70°C ambient. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with fixed-gain configuration, rejecting lead resistance and common-mode noise. Use Value: Enables ±0.1°C measurement accuracy with <0.5 µV long-term drift - eliminating annual field recalibration in building automation systems.	Use Scenario: Converting photodiode current to voltage in fiber-optic transceiver modules for 10G Ethernet links. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with low input bias current (1 nA max) and low 1/f noise to preserve dynamic range. Use Value: Maintains >70 dB SNR at 1 kHz while supporting wide supply range (±2.5 V to ±15 V) - simplifies power architecture in multi-voltage line cards.
Precision Weigh Scale Front-End	Industrial Process Controller Input Stage
Use Scenario: Conditioning mV-level output from strain gauge load cells in factory-floor weighing systems exposed to vibration and EMI. IC Role / Device Role / Timing Role: Low-drift, low-noise gain stage preceding 24-bit ΣΔ ADC; configured as differential-input, single-ended output. Use Value: Delivers <25 µV offset and 0.25 µV/°C drift - achieving ≤0.005% full-scale linearity without software correction across operating temperature.	Use Scenario: Signal conditioning for 4–20 mA loop-powered transmitters in chemical plant PLC I/O modules. IC Role / Device Role / Timing Role: High-PSRR buffer and level-shifter interfacing isolated current-sense resistors to analog input multiplexers. Use Value: PSRR >120 dB minimizes supply-induced errors from shared 24 VDC bus; MSL1 rating ensures reliability in high-throughput SMT production.

RTD Temperature Sensing

Optical Power Monitoring

Use Scenario: Amplifying low-level differential voltage from a 3-wire Pt100 RTD bridge in HVAC control panels operating from −25°C to +70°C ambient.

IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with fixed-gain configuration, rejecting lead resistance and common-mode noise.

Use Value: Enables ±0.1°C measurement accuracy with <0.5 µV long-term drift - eliminating annual field recalibration in building automation systems.

Use Scenario: Converting photodiode current to voltage in fiber-optic transceiver modules for 10G Ethernet links.

IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with low input bias current (1 nA max) and low 1/f noise to preserve dynamic range.

Use Value: Maintains >70 dB SNR at 1 kHz while supporting wide supply range (±2.5 V to ±15 V) - simplifies power architecture in multi-voltage line cards.

Precision Weigh Scale Front-End

Industrial Process Controller Input Stage

Use Scenario: Conditioning mV-level output from strain gauge load cells in factory-floor weighing systems exposed to vibration and EMI.

IC Role / Device Role / Timing Role: Low-drift, low-noise gain stage preceding 24-bit ΣΔ ADC; configured as differential-input, single-ended output.

Use Value: Delivers <25 µV offset and 0.25 µV/°C drift - achieving ≤0.005% full-scale linearity without software correction across operating temperature.

Use Scenario: Signal conditioning for 4–20 mA loop-powered transmitters in chemical plant PLC I/O modules.

IC Role / Device Role / Timing Role: High-PSRR buffer and level-shifter interfacing isolated current-sense resistors to analog input multiplexers.

Use Value: PSRR >120 dB minimizes supply-induced errors from shared 24 VDC bus; MSL1 rating ensures reliability in high-throughput SMT production.

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
OP1177ARZ-REEL7	Higher offset drift (0.6 µV/°C max), lower GBW (1.3 MHz), no MSL1 rating - requires manual reflow profile adjustment.	Less suitable for high-volume automated assembly; limited to ≤85°C ambient in sealed enclosures.	Choose if legacy OP07-family compatibility is required and long-term drift tolerance >0.5 µV/°C is acceptable.
AD8677ARZ-R7	Lower input bias current (0.4 nA typ), but higher voltage noise (12 nV/√Hz), narrower temp range (−40°C to +105°C).	Preferred for ultra-low IB applications like pH electrode buffers, but not for low-noise thermocouple amplification above 100 Hz.	Choose when femtoampere-level input leakage dominates design constraints over broadband noise or extended temperature operation.

Compared with OP1177ARZ-REEL7 and AD8677ARZ-R7, the ADA4077-1ARZ-R7 uniquely combines MSL1 reflow compliance, −40°C to +125°C operation, and sub-0.3 µV/°C drift - making it the only option qualified for automotive under-hood sensor signal chains and high-reliability industrial edge controllers without derating.

Availability

ADA4077-1ARZ-R7 is available at Aetrix Electronics and suitable for RTD temperature sensing, optical power monitoring, precision weigh scale front-ends, and industrial process controller input stages requiring stable component supply across extended temperature ranges and high-volume manufacturing cycles.

Supply support for ADA4077-1ARZ-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, communications, automotive, 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, MSL1 assembly compatibility, and guaranteed performance from −40°C to +125°C in compact SOIC and MSOP packages.

FAQ

What is the maximum guaranteed offset voltage for ADA4077-1ARZ-R7 at 25°C?

The ADA4077-1ARZ-R7 is a B-grade device in 8-lead SOIC packaging, with a maximum offset voltage of 25 µV at 25°C, as specified in Table 2 of the Rev. F datasheet. This value is tested and guaranteed across production lots, and remains ≤65 µV over the full −40°C to +125°C operating range - critical for DC-coupled precision systems where initial calibration must hold over temperature.

Does ADA4077-1ARZ-R7 support single-supply operation?

The ADA4077-1ARZ-R7 is specified for dual-supply operation from ±2.5 V to ±15 V and does not support true single-supply operation with rail-to-rail input or output. Its input voltage range is −3.8 V to +3 V (at ±5 V supplies) and output swing is limited to ≥±3.2 V. For single-supply applications, users must bias inputs within the common-mode range and ensure adequate headroom - it is not recommended for 0 V to 5 V systems without level-shifting circuitry.

Is ADA4077-1ARZ-R7 pin-compatible with OP07 or OP177?

No, ADA4077-1ARZ-R7 is not pin-compatible with OP07 or OP177. While it belongs to the same functional lineage, its 8-lead SOIC pinout (NIC on pins 1/5/8, V− on pin 4, V+ on pin 7) differs fundamentally from the 8-lead DIP/SOIC pinout of OP07 (pin 1 = offset null, pin 5 = offset null, pin 4 = V−, pin 8 = V+). Direct replacement requires PCB redesign and layout validation per Analog Devices' board layout guidelines.

What is the capacitive load drive capability of ADA4077-1ARZ-R7?

The ADA4077-1ARZ-R7 is specified to remain stable driving capacitive loads exceeding 1000 pF without external compensation, as confirmed in the General Description and Typical Performance Characteristics (Figures 40–45). This capability enables direct connection to ADC input filters, long PCB traces, and piezoelectric sensors - eliminating series isolation resistors that would degrade noise performance and introduce thermal EMF errors.

How does the MSL1 rating of ADA4077-1ARZ-R7 impact manufacturing?

The MSL1 rating of ADA4077-1ARZ-R7 means it can withstand peak reflow temperatures up to 260°C per IPC/JEDEC J-STD-020 without floor life limitation or baking requirements - simplifying SMT line logistics, reducing handling overhead, and ensuring consistent solder joint integrity in high-density, thermally constrained PCB assemblies such as 5G baseband modules and motor drive control boards.

ADA4077-1ARZ-R7 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:: 1

Output Type:: -

Slew Rate:: 1.2V/µs

Gain Bandwidth Product:: 3.6 MHz

-3db Bandwidth:: -

Current - Input Bias:: 400 pA

Voltage - Input Offset:: 15 µV

Current - Supply:: 400µA

Current - Output / Channel:: 22 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

ADA4077-1ARZ-R7 FAQ

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

Please submit a Request for Quotation (RFQ) for ADA4077-1ARZ-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 ADA4077-1ARZ-R7 reliable?

The price and inventory of ADA4077-1ARZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4077-1ARZ-R7 is usually 5 days.

3.What payment methods are accepted for ADA4077-1ARZ-R7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4077-1ARZ-R7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADA4077-1ARZ-R7?

ADA4077-1ARZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADA4077-1ARZ-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 ADA4077-1ARZ-R7?

For technical support, including ADA4077-1ARZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4077-1ARZ-R7 requirements.

6.How does Aetrix verify that ADA4077-1ARZ-R7 is sourced from the original manufacturer or authorized distributors?

All ADA4077-1ARZ-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 ADA4077-1ARZ-R7 meets industry standards.

7.What is the process for return or replacement of ADA4077-1ARZ-R7?

All ADA4077-1ARZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4077-1ARZ-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 ADA4077-1ARZ-R7 part is unused and in its original packaging.

Return procedure for ADA4077-1ARZ-R7:

1.Submit a request within 90 days.

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

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