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

Analog Devices Inc. ADA4077-1ARMZ-R7

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

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Part No.:: ADA4077-1ARMZ-R7

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Datasheet:: ADA4077-1ARMZ-R7.pdf

Description:: IC OPAMP GP 1 CIRCUIT 8MSOP

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Product details

Overview

ADA4077-1ARMZ-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 applications. 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, ±5 V to ±15 V dual-supply operation, and MSL1 reflow rating - enabling use in precision RTD front-ends, optical network control circuits, and process control systems.

For engineers reviewing the ADA4077-1ARMZ-R7 datasheet, ADA4077-1ARMZ-R7 pinout, ADA4077-1ARMZ-R7 application, or ADA4077-1ARMZ-R7 equivalent, key selection criteria include guaranteed offset and drift performance over −40°C to +125°C, immunity to phase reversal, unity-gain stability with >1000 pF capacitive loads, and compatibility with compact 8-lead MSOP packaging for space-constrained PCB layouts.

Technical Context

The ADA4077-1ARMZ-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, delivering stable CMRR (>122 dB) and PSRR (>123 dB) across supply voltages from ±2.5 V to ±18 V.

This amplifier features no phase reversal under overvoltage conditions, long-term offset drift of only 0.5 µV typical over 10,000 hours, and temperature hysteresis of 1 µV typical - all validated on soldered FR4 boards per JEDEC J-STD-020D. Its 3.9 MHz gain bandwidth and 1.2 V/µs slew rate support precision DC-to-moderate-frequency closed-loop designs without external compensation.

Key Specifications

Parameter	Value and Actual Design Meaning
Offset Voltage	25 µV maximum at 25°C (B grade, 8-lead MSOP); ensures <±50 µV total error across full −40°C to +125°C range in precision sensor interfaces.
Offset Drift	0.25 µV/°C maximum (B grade); limits thermal-induced error to <20 µV over 80°C ambient swing - critical for uncooled industrial enclosures.
Voltage Noise Density	6.9 nV/√Hz at 1 kHz; enables sub-1 µV RMS noise in 10 Hz–10 kHz bandwidths for high-resolution ADC driver stages.
Supply Current	400 µA typical per amplifier; allows battery-powered portable instrumentation with >1-year runtime on coin cells when paired with sleep-mode controllers.
Gain Bandwidth Product	3.9 MHz at ±5 V; supports stable unity-gain and G=10 configurations up to ~300 kHz without peaking or ringing.
CMRR / PSRR	>122 dB / >123 dB minimum; rejects common-mode interference from noisy PLC backplanes and suppresses supply ripple in shared-rail systems.
Output Drive	±10 mA output current with <1.6 V dropout; drives 2 kΩ loads to ±3.2 V on ±5 V rails - sufficient for driving SAR ADC reference buffers and analog multiplexers.

Pinout & Package

The ADA4077-1ARMZ-R7 is housed in an 8-lead MSOP (RM-8) package, measuring 3.0 mm × 3.0 mm × 0.85 mm, with MSL1 moisture sensitivity rating for lead-free reflow compatibility. Its compact footprint supports high-density layout in portable test equipment and modular I/O modules.

Pin/Terminal	Circuit Role	Design Meaning
1, 5, 8	NIC (Not Internally Connected)	No internal connection; must be left floating or tied to ground for mechanical stability - not usable as thermal pad or auxiliary functions.
2	−IN	Inverting input terminal; high-impedance node requiring guarded trace routing to minimize leakage-induced offset errors in pA-level current sensing.
3	+IN	Noninverting input terminal; matched to −IN for optimal CMRR; requires symmetrical layout and equal trace lengths to avoid thermocouple-induced offsets.
4	V−	Negative supply rail; must be decoupled within 2 mm of pin using ≥0.1 µF ceramic capacitor to suppress high-frequency PSRR degradation.
6	OUT	Amplifier output; capable of sourcing/sinking ±10 mA; stable into >1000 pF loads - eliminates need for isolation resistors in capacitive DAC buffer applications.
7	V+	Positive supply rail; shares same decoupling requirement as V−; dual-supply symmetry enables true bipolar signal handling from −3.2 V to +3.2 V on ±5 V rails.

Key Features

Feature	Design Value
No phase reversal	Immunity to polarity inversion even when input exceeds supply rails - prevents system lockup in overvoltage fault conditions in motor control feedback paths.
MSL1 reflow rating	Rated for 260°C peak reflow per IPC/JEDEC J-STD-020 - ensures reliability in high-volume automated assembly of industrial control modules.
Long-term drift	0.5 µV typical over 10,000 hours on FR4 PCB - reduces calibration frequency in field-deployed environmental monitoring sensors.
Temperature hysteresis	1 µV typical after three full −40°C ↔ +125°C cycles - guarantees repeatable zero-point accuracy in thermal cycling environments like HVAC commissioning tools.
Unity-gain stable	Stable with >1000 pF capacitive loads without external compensation - simplifies design of anti-aliasing filters and piezoelectric sensor interfaces.

Applications

Process Control Front-End Amplifier	Optical Network Control Circuit
Use Scenario: Amplifying low-level mV-range signals from 4–20 mA loop receivers and thermocouple transmitters in chemical plant DCS cabinets. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with rail-to-rail output swing and high PSRR to reject 50/60 Hz mains coupling and switching regulator noise. Use Value: 25 µV offset and 0.25 µV/°C drift ensure <±0.05% FSR error over full temperature range - meeting SIL-2 functional safety signal chain requirements.	Use Scenario: Biasing and monitoring laser diode current in fiber-optic transceivers operating in telecom central offices. IC Role / Device Role / Timing Role: Low-noise current-sense amplifier in closed-loop photodiode feedback path, rejecting supply ripple from adjacent DC/DC converters. Use Value: 6.9 nV/√Hz noise density and >123 dB PSRR maintain <0.1% optical power stability despite 100 mVpp supply ripple at 500 kHz.
Precision Sensor Signal Conditioning	Precision Filter Stage
Use Scenario: Linearizing and amplifying resistance changes from platinum RTDs in medical patient monitors and lab analyzers. IC Role / Device Role / Timing Role: Low-bias-current, low-drift instrumentation amplifier front-end driving ratiometric ADCs with 24-bit resolution. Use Value: 1 nA max input bias current prevents self-heating errors in 100 Ω–1 kΩ RTD bridges; 0.5 µV/10k-hr long-term drift enables 2-year calibration intervals.	Use Scenario: Implementing 2nd-order active low-pass filtering in portable spectrum analyzers and handheld oscilloscopes. IC Role / Device Role / Timing Role: Unity-gain-stable, low-distortion op amp in Sallen-Key topology with 100 kHz cutoff and <0.004% THD+N. Use Value: 3.9 MHz GBP and 55° phase margin deliver monotonic step response with <3 µs 0.1% settling - preserving transient fidelity in time-domain measurements.

Process Control Front-End Amplifier

Optical Network Control Circuit

Use Scenario: Amplifying low-level mV-range signals from 4–20 mA loop receivers and thermocouple transmitters in chemical plant DCS cabinets.

IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with rail-to-rail output swing and high PSRR to reject 50/60 Hz mains coupling and switching regulator noise.

Use Value: 25 µV offset and 0.25 µV/°C drift ensure <±0.05% FSR error over full temperature range - meeting SIL-2 functional safety signal chain requirements.

Use Scenario: Biasing and monitoring laser diode current in fiber-optic transceivers operating in telecom central offices.

IC Role / Device Role / Timing Role: Low-noise current-sense amplifier in closed-loop photodiode feedback path, rejecting supply ripple from adjacent DC/DC converters.

Use Value: 6.9 nV/√Hz noise density and >123 dB PSRR maintain <0.1% optical power stability despite 100 mVpp supply ripple at 500 kHz.

Precision Sensor Signal Conditioning

Precision Filter Stage

Use Scenario: Linearizing and amplifying resistance changes from platinum RTDs in medical patient monitors and lab analyzers.

IC Role / Device Role / Timing Role: Low-bias-current, low-drift instrumentation amplifier front-end driving ratiometric ADCs with 24-bit resolution.

Use Value: 1 nA max input bias current prevents self-heating errors in 100 Ω–1 kΩ RTD bridges; 0.5 µV/10k-hr long-term drift enables 2-year calibration intervals.

Use Scenario: Implementing 2nd-order active low-pass filtering in portable spectrum analyzers and handheld oscilloscopes.

IC Role / Device Role / Timing Role: Unity-gain-stable, low-distortion op amp in Sallen-Key topology with 100 kHz cutoff and <0.004% THD+N.

Use Value: 3.9 MHz GBP and 55° phase margin deliver monotonic step response with <3 µs 0.1% settling - preserving transient fidelity in time-domain measurements.

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
AD8677ARZ-R7	Same B-grade offset (25 µV max), but higher 10 nV/√Hz noise density and no MSL1 rating; SOIC-only packaging.	Lacks phase reversal immunity and long-term drift validation; unsuitable for reflow-critical or mission-critical thermal cycling deployments.	Select AD8677ARZ-R7 only if MSOP footprint is unnecessary and board-level reflow profile is non-standard.
OP1177ARZ-R7	Higher 60 µV max offset (A grade), 0.9 µV/°C drift, and 8 nV/√Hz noise; rated only to +105°C, not +125°C.	Not qualified for extended industrial temperature range; limited suitability in outdoor or engine-compartment-adjacent electronics.	Choose OP1177ARZ-R7 only for cost-sensitive, lower-accuracy legacy upgrades where ambient stays below 85°C.

Compared with AD8677ARZ-R7 and OP1177ARZ-R7, the ADA4077-1ARMZ-R7 provides superior thermal stability, verified long-term drift, guaranteed phase reversal immunity, and MSL1-compliant packaging - making it the preferred choice for new designs requiring robustness across harsh industrial lifecycles.

Availability

ADA4077-1ARMZ-R7 is available at Aetrix Electronics and suitable for process control front-end amplifiers, optical network control circuits, and precision sensor signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADA4077-1ARMZ-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 ultra-stable DC performance in space-constrained, thermally aggressive industrial instrumentation and sensor interface applications.

FAQ

What is the maximum operating temperature range for the ADA4077-1ARMZ-R7?

The ADA4077-1ARMZ-R7 is fully specified over −40°C to +125°C, with all key parameters - including offset voltage, drift, CMRR, and PSRR - guaranteed across this extended industrial temperature range. This rating is validated per JEDEC standards and applies to devices mounted on FR4 PCBs using standard reflow profiles, making ADA4077-1ARMZ-R7 suitable for under-hood automotive modules and factory-floor PLC I/O cards.

Does the ADA4077-1ARMZ-R7 require external compensation for stability?

No, the ADA4077-1ARMZ-R7 is unity-gain stable and does not require external compensation. It maintains phase margin >55° and remains stable driving capacitive loads exceeding 1000 pF directly - a key advantage over earlier precision op amps like OP177. This eliminates series isolation resistors in DAC output buffers and simplifies active filter design without risking oscillation.

What is the significance of the MSL1 rating for ADA4077-1ARMZ-R7?

The MSL1 (Moisture Sensitivity Level 1) rating means ADA4077-1ARMZ-R7 has unlimited floor life and withstands peak reflow temperatures up to 260°C per IPC/JEDEC J-STD-020 - the strictest level for surface-mount components. This ensures reliable solder joint formation in high-throughput lead-free assembly lines without baking preconditioning, reducing manufacturing risk in high-volume industrial control module production.

How does the long-term drift specification of ADA4077-1ARMZ-R7 impact system calibration?

The ADA4077-1ARMZ-R7 exhibits only 0.5 µV typical long-term offset drift over 10,000 hours (≈14 months) when soldered onto FR4 PCBs - less than 2% of its 25 µV max room-temperature offset. This enables multi-year calibration intervals in field-deployed equipment such as environmental data loggers and portable calibration standards, reducing maintenance cost and downtime versus predecessors like OP177.

Can ADA4077-1ARMZ-R7 operate from a single supply?

The ADA4077-1ARMZ-R7 is designed for dual-supply operation (±2.5 V to ±15 V) and is not characterized for true single-supply use. While it may function with asymmetric supplies (e.g., +5 V and GND), its input common-mode range extends only to within 1.2 V of each rail, and output swing is similarly limited. For dedicated single-supply applications, Analog Devices recommends the AD8605 or ADA4051-2 instead of ADA4077-1ARMZ-R7.

ADA4077-1ARMZ-R7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 8-TSSOP, 8-MSOP (0.118", 3.00mm 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:: 50 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-MSOP

ADA4077-1ARMZ-R7 FAQ

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

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

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

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

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

Note: Certain payment methods may incur a processing fee.

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

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

Once your ADA4077-1ARMZ-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 ADA4077-1ARMZ-R7?

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

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

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

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

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

Return procedure for ADA4077-1ARMZ-R7:

1.Submit a request within 90 days.

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

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