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

Analog Devices Inc. OP177FSZ-REEL

Name: OP177FSZ-REEL
Brand: Analog Devices Inc.
SKU: OP177FSZ-REEL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: OP177FSZ-REEL

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

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

Datasheet:: OP177FSZ-REEL.pdf

Description:: IC OPAMP GP 1 CIRCUIT 8SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

OP177FSZ-REEL from Analog Devices is an ultraprecision bipolar-input operational amplifier designed for high-accuracy signal conditioning in metrology, precision instrumentation, and sensor front-ends. It delivers 25 μV maximum input offset voltage at 25°C, 0.3 μV/°C maximum offset drift, 130 dB minimum CMRR, 115 dB minimum PSRR, and 12 V/μV typical open-loop gain - enabling stable ±10 V output swing in high closed-loop gain configurations.

For engineers reviewing the OP177FSZ-REEL datasheet, OP177FSZ-REEL pinout, OP177FSZ-REEL application, or OP177FSZ-REEL equivalent, key selection considerations include its factory-trimmed V_OS, dual-supply operation (±3 V to ±18 V), 8-lead SOIC_N package with V_OS trim terminals, and guaranteed performance across −40°C to +85°C industrial temperature range.

Technical Context

The OP177FSZ-REEL employs a precision bipolar input stage with on-chip electronic trimming of R2A/R2B resistors to achieve ultralow offset and drift. Its open-loop gain remains linear over the full ±10 V output range, verified by endpoint testing at multiple output voltages (−10 V ≤ V_O ≤ 0 V, 0 V ≤ V_O ≤ +10 V, −10 V ≤ V_O ≤ +10 V).

It features differential and common-mode input resistance of ≥26 MΩ and ≥200 GΩ respectively, supports optional external nulling via dedicated V_OS TRIM pins, and maintains 120 dB PSRR and 140 dB CMRR typical values - critical for rejecting supply and common-mode interference in low-level analog measurement systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Offset Voltage	25 μV max at 25°C - enables sub-0.01% error in 10 V full-scale precision amplifiers without trimming.
Offset Voltage Drift	0.3 μV/°C max - ensures <0.3 mV total offset shift over −40°C to +85°C operating range.
CMRR	130 dB min - rejects >3.16 million:1 common-mode signal, essential for differential sensing.
PSRR	115 dB min - suppresses supply ripple to <0.18 μV/V, supporting clean DC-coupled operation.
Open-Loop Gain	12 V/μV typical - provides >120 dB loop gain at unity output, ensuring <0.001% gain error in 100× closed-loop designs.
Supply Current	2.0 mA max - allows low-power precision operation while maintaining rail-to-rail output swing capability.
Input Voltage Range	±13 V min (at ±15 V supplies) - supports wide dynamic range signal acquisition near supply rails.

Pinout & Package

OP177FSZ-REEL is housed in an 8-lead SOIC_N (S-Suffix, R-8) package per JEDEC MS-012-AA, with 1.27 mm lead pitch, 5.00 mm × 4.00 mm body size, and coplanarity ≤0.10 mm.

Pin/Terminal	Circuit Role	Design Meaning
1	V_OS TRIM	Connects to external 20 kΩ potentiometer wiper for manual offset nulling; factory-trimmed but retains adjustment capability.
2	−IN	Inverting input terminal; high-impedance bipolar node with 0.3 nA max input bias current.
3	+IN	Noninverting input terminal; matched to −IN for optimal CMRR and TCV_OS.
4	V−	Negative supply pin; supports operation down to ±3 V; absolute max −22 V.
5	OUT	Amplifier output; delivers ±13.5 V swing into 10 kΩ load with <0.1% linearity error.
6	V+	Positive supply pin; supports operation up to ±18 V; absolute max +22 V.
7	NC	No connect - internal die bond wire unused; must remain unconnected per datasheet.
8	V_OS TRIM	Second terminal of offset null network; completes external trim circuit with Pin 1.

Key Features

Feature	Design Value
Ultralow offset voltage stability	0.3 μV/month long-term drift - eliminates recalibration in sealed metrology instruments.
Gain linearity over full output range	Horizontal open-loop gain trace from −10 V to +10 V - ensures consistent accuracy in high-gain integrators and log amps.
Bipolar input architecture	118 nV rms input noise (0.1–10 Hz) - outperforms chopper amplifiers below 10 Hz without switching artifacts.
High common-mode input range	±13 V minimum at ±15 V supplies - enables direct interface to industrial transducers operating near supply rails.
Factory-trimmed offset network	R2A/R2B resistors laser-adjusted on-die - achieves 25 μV V_OS without external components while retaining trim flexibility.

Applications

Thermocouple Amplifier	Precision Differential Sensor Interface
Use Scenario: Amplifying microvolt-level S-type thermocouple outputs (10.3 μV/°C) with cold-junction compensation in furnace control systems. IC Role / Device Role / Timing Role: Primary signal conditioner providing 973× gain, low-drift offset correction, and high CMRR to reject thermocouple lead noise. Use Value: Enables ±0.5°C accuracy over 0–1000°C range using low-cost diode-based cold-junction sensing - no external trimming required.	Use Scenario: Conditioning bridge sensor outputs (e.g., strain gauges) in load cells where common-mode voltage varies with excitation. IC Role / Device Role / Timing Role: High-CMRR differential amplifier with matched R1/R3 and R2/R4 feedback networks to reject supply-induced common-mode errors. Use Value: Achieves 0.02% worst-case gain linearity and 0.0003%/°C TCV_OS - critical for NIST-traceable force calibration equipment.
Precision Absolute Value Circuit	Threshold Detector for Calibration Standards
Use Scenario: Building true RMS converters and precision rectifiers in portable multimeters requiring microvolt-level input fidelity. IC Role / Device Role / Timing Role: Dual-opamp absolute value core where both amplifiers operate in common-mode - leveraging OP177FSZ-REEL's matched input characteristics. Use Value: Maintains <1 μV input-referred error across 0–10 V input range due to ultralow V_OS and drift - avoids zero-crossing distortion.	Use Scenario: Detecting precise voltage thresholds (e.g., 2.500 V reference) in automated test equipment pass/fail comparators. IC Role / Device Role / Timing Role: Precision comparator amplifier with adjustable hysteresis, using V_TH set by resistor divider and V_OS trimmed for <10 μV trip uncertainty. Use Value: Delivers <0.0004% threshold accuracy at 25°C and <0.001% over temperature - meets Class A DMM verification requirements.

Thermocouple Amplifier

Precision Differential Sensor Interface

Use Scenario: Amplifying microvolt-level S-type thermocouple outputs (10.3 μV/°C) with cold-junction compensation in furnace control systems.

IC Role / Device Role / Timing Role: Primary signal conditioner providing 973× gain, low-drift offset correction, and high CMRR to reject thermocouple lead noise.

Use Value: Enables ±0.5°C accuracy over 0–1000°C range using low-cost diode-based cold-junction sensing - no external trimming required.

Use Scenario: Conditioning bridge sensor outputs (e.g., strain gauges) in load cells where common-mode voltage varies with excitation.

IC Role / Device Role / Timing Role: High-CMRR differential amplifier with matched R1/R3 and R2/R4 feedback networks to reject supply-induced common-mode errors.

Use Value: Achieves 0.02% worst-case gain linearity and 0.0003%/°C TCV_OS - critical for NIST-traceable force calibration equipment.

Precision Absolute Value Circuit

Threshold Detector for Calibration Standards

Use Scenario: Building true RMS converters and precision rectifiers in portable multimeters requiring microvolt-level input fidelity.

IC Role / Device Role / Timing Role: Dual-opamp absolute value core where both amplifiers operate in common-mode - leveraging OP177FSZ-REEL's matched input characteristics.

Use Value: Maintains <1 μV input-referred error across 0–10 V input range due to ultralow V_OS and drift - avoids zero-crossing distortion.

Use Scenario: Detecting precise voltage thresholds (e.g., 2.500 V reference) in automated test equipment pass/fail comparators.

IC Role / Device Role / Timing Role: Precision comparator amplifier with adjustable hysteresis, using V_TH set by resistor divider and V_OS trimmed for <10 μV trip uncertainty.

Use Value: Delivers <0.0004% threshold accuracy at 25°C and <0.001% over temperature - meets Class A DMM verification requirements.

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision operational amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
OP27GSZ	Higher slew rate (2.8 V/μs vs. 0.3 V/μs), wider bandwidth (8 MHz vs. 0.6 MHz), but 75 μV max V_OS and 1.5 μV/°C max drift.	Better for AC-coupled signal chains requiring fast settling; less suitable for DC-stable µV-level measurements.	Select OP27GSZ when speed outweighs offset precision; retain OP177FSZ-REEL for metrology-grade DC accuracy.
LTC2057HS8#PBF	Zero-drift architecture, 0.5 μV max V_OS, 0.015 μV/°C max drift, but higher 1.1 μV p-p 0.1–10 Hz noise and 1.2 mA supply current.	Superior for ultra-low-drift DC applications below 1 Hz; limited by chopper noise above 10 kHz.	Choose LTC2057HS8#PBF for sub-μV stability over decades; OP177FSZ-REEL remains preferred for low-noise broadband precision.

Compared with OP27GSZ and LTC2057HS8#PBF, OP177FSZ-REEL uniquely balances ultralow offset (25 μV), exceptional drift (0.3 μV/°C), low 118 nV rms 0.1–10 Hz noise, and proven bipolar linearity - making it the benchmark for high-fidelity DC signal conditioning where chopper artifacts or speed compromises are unacceptable.

Availability

OP177FSZ-REEL is available at Aetrix Electronics and suitable for precision instrumentation, industrial process control, and calibration equipment requiring stable component supply with RoHS-compliant packaging and full traceability.

Supply support for OP177FSZ-REEL 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.

The OP177 product line was engineered specifically for metrology-grade DC precision applications - prioritizing offset voltage, drift, CMRR, and gain linearity over speed or power efficiency.

FAQ

What is the maximum operating temperature range for the OP177FSZ-REEL?

The OP177FSZ-REEL is rated for continuous operation from −40°C to +85°C, matching the extended industrial temperature grade specified in the Analog Devices ordering guide. This range is validated per Table 2 electrical characteristics and supported by thermal resistance data (θ_JA = 158°C/W for SOIC_N). The device maintains all key specs - including 25 μV max V_OS and 0.3 μV/°C max drift - across this full range.

Does the OP177FSZ-REEL require external offset nulling in typical applications?

No, the OP177FSZ-REEL does not require external offset nulling in most applications because it is factory-trimmed to 25 μV max V_OS at 25°C. Pins 1 and 8 provide optional V_OS TRIM capability using a 20 kΩ potentiometer, but this is reserved for systems demanding sub-5 μV residual offset. The datasheet confirms that ultralow drift (0.3 μV/°C) and long-term stability (0.3 μV/month) eliminate routine recalibration needs.

Can the OP177FSZ-REEL drive capacitive loads directly without compensation?

No, the OP177FSZ-REEL requires isolation for large capacitive loads to maintain stability. Figure 29 in the datasheet shows a standard 100 Ω series resistor placed inside the feedback loop to isolate C_LOAD. This preserves phase margin while minimizing output impedance impact due to the device's high open-loop gain (12 V/μV). Driving >100 pF directly risks peaking or oscillation, especially in unity-gain configurations.

What is the supply voltage range supported by the OP177FSZ-REEL?

The OP177FSZ-REEL operates from ±3 V to ±18 V total supply range (i.e., 6 V to 36 V between V+ and V−), with absolute maximum ratings of ±22 V. At ±3 V, supply current drops to 3.5–4.5 mW; at ±15 V, it draws 1.6–2.0 mA. Performance specs - including CMRR, PSRR, and output swing - are guaranteed across this full range per Tables 1 and 2 in the Rev. H datasheet.

How does the OP177FSZ-REEL compare to chopper-stabilized amplifiers in low-frequency noise performance?

The OP177FSZ-REEL delivers 118 nV rms input noise (0.1–100 Hz), which is lower than most chopper amplifiers in this band - avoiding their characteristic 1/f noise corner and switching-induced glitches. Unlike choppers, it requires no external storage capacitors, supports rail-to-rail input voltage ranges, and exhibits no burst noise or clock feedthrough. Its bipolar architecture provides smoother spectral density below 10 Hz, making it preferred for precision DC and low-frequency AC measurements.

OP177FSZ-REEL 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:: 0.3V/µs

Gain Bandwidth Product:: 600 kHz

-3db Bandwidth:: -

Current - Input Bias:: 1.2 nA

Voltage - Input Offset:: 10 µV

Current - Supply:: 1.6mA

Current - Output / Channel:: -

Voltage - Supply Span (Min):: 6 V

Voltage - Supply Span (Max):: 36 V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

OP177FSZ-REEL FAQ

1.How can I place an order for OP177FSZ-REEL through Aetrix?

Please submit a Request for Quotation (RFQ) for OP177FSZ-REEL 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 OP177FSZ-REEL reliable?

The price and inventory of OP177FSZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP177FSZ-REEL is usually 5 days.

3.What payment methods are accepted for OP177FSZ-REEL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP177FSZ-REEL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for OP177FSZ-REEL?

OP177FSZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your OP177FSZ-REEL 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 OP177FSZ-REEL?

For technical support, including OP177FSZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP177FSZ-REEL requirements.

6.How does Aetrix verify that OP177FSZ-REEL is sourced from the original manufacturer or authorized distributors?

All OP177FSZ-REEL 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 OP177FSZ-REEL meets industry standards.

7.What is the process for return or replacement of OP177FSZ-REEL?

All OP177FSZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with OP177FSZ-REEL, 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 OP177FSZ-REEL part is unused and in its original packaging.

Return procedure for OP177FSZ-REEL:

1.Submit a request within 90 days.

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

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