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

Analog Devices Inc. ADA4177-4ARZ-RL

Name: ADA4177-4ARZ-RL
Brand: Analog Devices Inc.
SKU: ADA4177-4ARZ-RL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADA4177-4ARZ-RL

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

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

Datasheet:: ADA4177-4ARZ-RL.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ADA4177-4ARZ-RL from Analog Devices is a quad-channel precision operational amplifier with rail-to-rail output, 60 µV max offset voltage at 25°C, 1 µV/°C max drift, 1 nA max input bias current, and integrated EMI filtering delivering 70 dB rejection at 1000 MHz - deployed in thermocouple signal conditioning and shunt-based current measurement circuits.

For engineers reviewing the ADA4177-4ARZ-RL datasheet, ADA4177-4ARZ-RL pinout, ADA4177-4ARZ-RL application, or ADA4177-4ARZ-RL equivalent, this page delivers verified specifications, package mapping to 14-lead SOIC, channel-separated pin functions, real-world sensor interface use cases, and two validated alternative op amps for industrial-grade precision amplification.

Technical Context

The ADA4177-4ARZ-RL implements active overvoltage protection on both inputs (±32 V beyond supplies), enabling robust operation in noisy industrial environments without external clamping. Its input stage integrates EMI filters that suppress RF interference at 1000 MHz (70 dB) and 2400 MHz (90 dB), while maintaining low 8 nV/√Hz voltage noise density at 1 kHz.

This quad amplifier features unity-gain stability, no phase reversal, and drives >1000 pF capacitive loads directly. It operates across ±2.5 V to ±18 V dual supplies and supports full-rail output swing with 25 mA output drive capability per channel - critical for high-accuracy analog front ends in wide-temperature-range applications (−40°C to +125°C).

Key Specifications

Parameter	Value and Actual Design Meaning
Offset Voltage	60 µV maximum at 25°C - ensures ≤0.006% gain error in 1 V full-scale precision measurement systems.
Offset Drift	1 µV/°C maximum - limits temperature-induced error to <120 µV over −40°C to +125°C industrial range.
Input Bias Current	1 nA maximum at 25°C - enables accurate amplification of high-impedance sources like RTDs and piezoelectric sensors.
EMI Rejection	70 dB at 1000 MHz - suppresses cellular and Wi-Fi band interference in wireless base station control circuits.
Supply Current	500 µA typical per amplifier - allows four channels to operate within 2 mA total quiescent budget for low-power instrumentation.
Gain Bandwidth	3.5 MHz - supports stable closed-loop gain ≥100 up to 35 kHz with minimal phase margin degradation.
Output Swing	Rail-to-rail - delivers full ±4.95 V output at ±5 V supply, maximizing dynamic range in single-supply-compatible designs.

Pinout & Package

ADA4177-4ARZ-RL is packaged in a 14-lead SOIC (Small Outline Integrated Circuit) with standard 1.27 mm pitch, RoHS-compliant lead finish, and thermal resistance θ_JA = 115°C/W.

Pin/Terminal	Circuit Role	Design Meaning
1	OUT A	Amplifier A output - drives external load or next-stage input with 25 mA sourcing/sinking capability.
2	−IN A	Inverting input for Channel A - connects to feedback network or inverting configuration nodes.
3	+IN A	Noninverting input for Channel A - interfaces with high-impedance sensors (e.g., thermocouples) with EMI-filtered path.
4	V+	Positive supply rail - accepts ±2.5 V to ±18 V; must be decoupled with 0.1 µF ceramic capacitor near pin.
5	+IN B	Noninverting input for Channel B - electrically isolated from other channels; supports independent sensor inputs.
6	−IN B	Inverting input for Channel B - used in differential or transimpedance configurations with matched layout.
7	OUT B	Amplifier B output - shares same output drive specs as OUT A; requires individual load isolation if driving different impedances.
8	OUT C	Amplifier C output - enables simultaneous multi-sensor signal conditioning without cross-talk (127 dB channel separation at 1 kHz).
9	−IN C	Inverting input for Channel C - referenced to same V− rail as all channels; layout symmetry critical for CMRR preservation.
10	+IN C	Noninverting input for Channel C - protected by same ±32 V OVP circuitry as other inputs; immune to transient overvoltage events.
11	V−	Negative supply rail - completes dual-supply path; must be decoupled identically to V+ for PSRR optimization.
12	+IN D	Noninverting input for Channel D - supports fourth independent analog channel in compact 14-pin footprint.
13	−IN D	Inverting input for Channel D - matches electrical characteristics of other inverting inputs (IB ≤1 nA, CINCM = 8 pF).
14	OUT D	Amplifier D output - fully specified for rail-to-rail swing and 6 MHz −3 dB bandwidth at AV = 1.

Key Features

Feature	Design Value
Input Overvoltage Protection	±32 V beyond supply rails - eliminates need for external series resistors or clamps in field-connected sensor interfaces.
Integrated EMI Filter	70 dB rejection at 1000 MHz - prevents RF rectification errors in optical network control circuits exposed to ambient RF.
Rail-to-Rail Output	Swings within 50 mV of rails at 1 mA load - maximizes ADC input range utilization in 16-bit data acquisition systems.
Low Long-Term Drift	2 µV typical after 10,000 hours - ensures calibration stability in unattended industrial monitoring equipment.
No Phase Reversal	Guaranteed under common-mode overload - prevents latch-up or erroneous control signals when inputs exceed IVR limits.
High Channel Separation	127 dB at 1 kHz - enables simultaneous amplification of four independent low-level sensor signals on one die without crosstalk.

Applications

Thermocouple Amplification	Shunt-Based Current Sensing
Use Scenario: Amplifying µV-level Seebeck voltages from K-type thermocouples in furnace temperature controllers operating from −40°C to +125°C. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier with OVP-protected inputs handling ±10 mV input range and rejecting EMI from nearby SCR drives. Use Value: 60 µV max VOS and 1 µV/°C drift ensure <±0.5°C absolute accuracy without software compensation over full temperature range.	Use Scenario: Measuring motor phase current via 1 mΩ shunt resistor in industrial inverters, where switching noise exceeds 1000 MHz. IC Role / Device Role / Timing Role: Low-noise, high-PSRR transimpedance amplifier converting shunt voltage to clean 0–5 V output for ADC sampling. Use Value: 70 dB EMI rejection at 1000 MHz prevents RF-induced offset shifts during PWM commutation, preserving current measurement fidelity.
RTD Signal Conditioning	Optical Network Bias Control
Use Scenario: Exciting and measuring 100 Ω Pt RTDs in process control loop transmitters requiring 0.1°C resolution over −200°C to +850°C range. IC Role / Device Role / Timing Role: Constant-current source driver and ratiometric amplifier with matched input bias currents minimizing self-heating errors. Use Value: 1 nA max IB reduces self-heating-induced resistance error in 4-wire RTD bridges to <0.001 Ω - below 0.01°C uncertainty threshold.	Use Scenario: Controlling laser diode bias current in fiber-optic transceivers where EMI from adjacent clock lines threatens analog stability. IC Role / Device Role / Timing Role: High-PSRR (145 dB typ.) voltage reference buffer and feedback amplifier in closed-loop bias control loop. Use Value: 145 dB PSRR and 8 nV/√Hz noise density maintain <10 µA bias current stability despite ±15 V supply ripple from shared power rails.

Thermocouple Amplification

Shunt-Based Current Sensing

Use Scenario: Amplifying µV-level Seebeck voltages from K-type thermocouples in furnace temperature controllers operating from −40°C to +125°C.

IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier with OVP-protected inputs handling ±10 mV input range and rejecting EMI from nearby SCR drives.

Use Value: 60 µV max VOS and 1 µV/°C drift ensure <±0.5°C absolute accuracy without software compensation over full temperature range.

Use Scenario: Measuring motor phase current via 1 mΩ shunt resistor in industrial inverters, where switching noise exceeds 1000 MHz.

IC Role / Device Role / Timing Role: Low-noise, high-PSRR transimpedance amplifier converting shunt voltage to clean 0–5 V output for ADC sampling.

Use Value: 70 dB EMI rejection at 1000 MHz prevents RF-induced offset shifts during PWM commutation, preserving current measurement fidelity.

RTD Signal Conditioning

Optical Network Bias Control

Use Scenario: Exciting and measuring 100 Ω Pt RTDs in process control loop transmitters requiring 0.1°C resolution over −200°C to +850°C range.

IC Role / Device Role / Timing Role: Constant-current source driver and ratiometric amplifier with matched input bias currents minimizing self-heating errors.

Use Value: 1 nA max IB reduces self-heating-induced resistance error in 4-wire RTD bridges to <0.001 Ω - below 0.01°C uncertainty threshold.

Use Scenario: Controlling laser diode bias current in fiber-optic transceivers where EMI from adjacent clock lines threatens analog stability.

IC Role / Device Role / Timing Role: High-PSRR (145 dB typ.) voltage reference buffer and feedback amplifier in closed-loop bias control loop.

Use Value: 145 dB PSRR and 8 nV/√Hz noise density maintain <10 µA bias current stability despite ±15 V supply ripple from shared power rails.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
AD8628ARZ	Single-channel, 1 µV max VOS, 0.002 µV/°C drift, but no OVP or EMI filter; 1.5 mA supply current.	Lacks ±32 V input protection and EMI rejection - requires external protection circuitry in harsh environments.	Choose AD8628ARZ only for ultra-low-drift lab-grade instruments where EMI and overvoltage risks are absent.
ADA4522-4ARZ	Quad-channel, zero-drift architecture, 0.3 µV max VOS, 0.005 µV/°C drift, but no OVP; 1.2 mA per amp.	Superior DC precision but vulnerable to input transients - unsuitable for field-connected sensors without added protection.	Select ADA4522-4ARZ when long-term zero-drift dominates over ruggedness, and PCB space allows discrete OVP components.

Compared with AD8628ARZ and ADA4522-4ARZ, the ADA4177-4ARZ-RL uniquely combines quad-channel integration, ±32 V OVP, and 70 dB EMI rejection at sub-500 µA supply - making it the only drop-in solution for industrial sensor nodes requiring both precision and field-hardened reliability.

Availability

ADA4177-4ARZ-RL is available at Aetrix Electronics and suitable for thermocouple amplification, shunt-based current sensing, RTD signal conditioning, and optical network bias control requiring stable component supply across extended temperature ranges and high-reliability production cycles.

Supply support for ADA4177-4ARZ-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, headquartered in Norwood, MA, serving industrial, communications, automotive, and healthcare markets since 1965.

The ADA4177 family was engineered specifically for precision sensor signal chains in harsh industrial environments - prioritizing input ruggedness (OVP + EMI filtering), low drift, and rail-to-rail output drive in compact packages.

FAQ

What is the maximum supply voltage range supported by the ADA4177-4ARZ-RL?

The ADA4177-4ARZ-RL operates over a dual-supply range of ±2.5 V to ±18 V, with absolute maximum ratings specifying 36 V total supply voltage. It is fully specified at ±5 V and ±15 V, delivering guaranteed performance including 100 dB minimum large-signal voltage gain and 122 dB CMRR across that range. Exceeding ±18 V is not recommended for continuous operation.

Does the ADA4177-4ARZ-RL require external compensation for capacitive loads?

No, the ADA4177-4ARZ-RL is unity-gain stable and designed to drive capacitive loads exceeding 1000 pF without external compensation. This capability is confirmed in the datasheet's General Description and applies across all four channels under ±5 V and ±15 V supply conditions, simplifying layout in ADC driver and filter applications.

How does the input overvoltage protection work on the ADA4177-4ARZ-RL?

The ADA4177-4ARZ-RL features active input overvoltage protection that limits current to 10–12 mA when inputs exceed V+ or fall below V− by up to 32 V. This internal circuitry eliminates the need for external series resistors or clamps, preserving signal integrity and enabling direct connection to field wiring in industrial I/O modules.

What is the thermal resistance (θJA) of the ADA4177-4ARZ-RL package?

The ADA4177-4ARZ-RL in its 14-lead SOIC package has a thermal resistance θJA of 115°C/W under standard JEDEC test conditions. This value assumes proper PCB copper pour and two-layer board construction; actual junction temperature must remain ≤150°C, calculated as TJ = PD × 115 + TA.

Can the ADA4177-4ARZ-RL be used as a comparator?

Yes, the ADA4177-4ARZ-RL can be used as a comparator in non-critical applications, as noted in the Applications Information section of the datasheet. However, it lacks dedicated comparator features like internal hysteresis or fast recovery from saturation - so for timing-critical or high-speed comparisons, a purpose-built comparator such as the ADCMP341 is recommended instead of the ADA4177-4ARZ-RL.

ADA4177-4ARZ-RL 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:: Rail-to-Rail

Slew Rate:: 1.5V/µs

Gain Bandwidth Product:: 3.5 MHz

-3db Bandwidth:: 6 MHz

Current - Input Bias:: 300 pA

Voltage - Input Offset:: 2 µV

Current - Supply:: 500µA (x4 Channels)

Current - Output / Channel:: 25 mA

Voltage - Supply Span (Min):: 5 V

Voltage - Supply Span (Max):: 36 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SOIC

ADA4177-4ARZ-RL FAQ

1.How can I place an order for ADA4177-4ARZ-RL through Aetrix?

Please submit a Request for Quotation (RFQ) for ADA4177-4ARZ-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 ADA4177-4ARZ-RL reliable?

The price and inventory of ADA4177-4ARZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4177-4ARZ-RL is usually 5 days.

3.What payment methods are accepted for ADA4177-4ARZ-RL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4177-4ARZ-RL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADA4177-4ARZ-RL?

ADA4177-4ARZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADA4177-4ARZ-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 ADA4177-4ARZ-RL?

For technical support, including ADA4177-4ARZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4177-4ARZ-RL requirements.

6.How does Aetrix verify that ADA4177-4ARZ-RL is sourced from the original manufacturer or authorized distributors?

All ADA4177-4ARZ-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 ADA4177-4ARZ-RL meets industry standards.

7.What is the process for return or replacement of ADA4177-4ARZ-RL?

All ADA4177-4ARZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADA4177-4ARZ-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 ADA4177-4ARZ-RL part is unused and in its original packaging.

Return procedure for ADA4177-4ARZ-RL:

1.Submit a request within 90 days.

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

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