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Analog Devices Inc. OP177FPZ
- Part No.:
- OP177FPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
OP177FPZ.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:561
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Product details
Overview
OP177FPZ from Analog Devices is an ultraprecision bipolar-input operational amplifier designed for high-accuracy signal conditioning in demanding analog circuits. It delivers 25 μV maximum input offset voltage, 0.3 μV/°C maximum offset drift, 130 dB minimum CMRR, and 12 V/μV typical open-loop gain - enabling stable, high-closed-loop-gain operation in thermocouple amplifiers, precision differential stages, and absolute value circuits.
For engineers reviewing the OP177FPZ datasheet, OP177FPZ pinout, OP177FPZ application, or OP177FPZ equivalent, key selection criteria include ultralow TCVOS for temperature-stable DC gain, high open-loop gain linearity across ±10 V output swing, and compatibility with industry-standard 8-lead PDIP sockets for prototyping and calibration-grade instrumentation.
Technical Context
The OP177FPZ employs a precision bipolar input stage with on-chip laser-trimmed resistor networks (R2A/R2B) to achieve factory-set offset nulling and exceptional gain linearity. Its architecture maintains ≥5000 V/mV large-signal voltage gain over the full ±10 V output range while delivering 115 dB minimum PSRR and 130 dB minimum CMRR at 25°C.
Designed for DC-critical applications, it operates across −40°C to +85°C with guaranteed 2.0 mA maximum supply current and supports external offset trim via dedicated VOS TRIM pins. The device avoids chopper-related artifacts - no low-frequency spikes, no external storage capacitors - while matching chopper-stabilized performance in offset and drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 25 μV max at 25°C - enables sub-0.01% error in 100× gain stages without trimming |
| Offset Voltage Drift | 0.3 μV/°C max - ensures <0.3 mV total drift over full −40°C to +85°C range |
| Open-Loop Gain | 12 V/μV typical - sustains >5000 V/mV gain across entire ±10 V output swing for linear high-gain design |
| CMRR | 130 dB min - rejects common-mode interference in bridge sensor interfaces and differential amplifiers |
| PSRR | 115 dB min - maintains accuracy under noisy or unregulated dual-supply conditions |
| Supply Current | 2.0 mA max - balances ultraprecision performance with moderate power in battery-backed or thermal-limited systems |
| Input Resistance | 26 MΩ differential, 200 GΩ common-mode - minimizes loading on high-impedance sources like thermocouples and piezoelectric sensors |
Pinout & Package
OP177FPZ is packaged in an 8-lead plastic dual in-line package (PDIP), compliant with JEDEC MS-001 and RoHS-compliant (Z-suffix). The package features through-hole mounting, standard 0.300" wide body, and 0.100" lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOS TRIM | Connects to external 20 kΩ potentiometer wiper for manual offset nulling |
| 2 | −IN | Inverting input terminal - high-impedance node for feedback network attachment |
| 3 | +IN | Noninverting input terminal - accepts reference, sensor, or signal source with minimal bias current error |
| 4 | V− | Negative supply rail connection - must be decoupled locally for PSRR integrity |
| 5 | NC | No connect - internally unconnected; leave floating or grounded per layout best practice |
| 6 | OUT | Amplified output node - capable of ±13.5 V swing into 10 kΩ load |
| 7 | V+ | Positive supply rail connection - requires local 0.1 µF ceramic + 10 µF tantalum decoupling |
| 8 | VOS TRIM | Second VOS TRIM terminal - completes external nulling circuit with Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow offset voltage drift | 0.3 μV/°C max ensures system-level calibration remains valid across industrial temperature range |
| Gain linearity over full output range | Horizontal open-loop gain trace (Figure 25) eliminates nonlinearity-induced errors in 1000×+ closed-loop configurations |
| Bipolar input architecture | Delivers chopper-class DC precision without switching noise, capacitor requirements, or limited input voltage range |
| High CMRR & PSRR | 130 dB CMRR and 115 dB PSRR enable accurate measurement in electrically noisy environments (e.g., motor drives, PLC I/O) |
| Socket-compatible PDIP packaging | Facilitates rapid prototyping, in-circuit calibration, and field-replaceable precision upgrades without PCB redesign |
Applications
| Thermocouple Amplifier | Precision Differential Amplifier |
|---|---|
|
Use Scenario: Amplifying microvolt-level S-type thermocouple outputs (10.3 μV/°C) with cold-junction compensation to deliver 10.024 V at 1000°C. IC Role / Device Role / Timing Role: Primary gain-stage op-amp providing stable 973× closed-loop gain, low-drift offset correction, and high CMRR to reject junction noise. Use Value: Enables ±0.5°C system accuracy over −40°C to +85°C ambient without recalibration, leveraging 0.3 μV/°C TCVOS and 130 dB CMRR. |
Use Scenario: Measuring small differential signals (e.g., 10 mV) across high common-mode voltages in strain gauge bridges or current shunts. IC Role / Device Role / Timing Role: Single-stage high-gain differential amplifier with matched R1/R3 and R2/R4 feedback network. Use Value: Achieves <0.02% gain linearity error and 0.0003%/°C TCVOS contribution, eliminating need for multi-stage architectures or post-processing correction. |
| Precision Absolute Value Circuit | Threshold Detector/Amplifier |
|
Use Scenario: Converting bidirectional microvolt-to-volt sensor outputs (e.g., LVDT, AC-coupled transducers) into unidirectional DC signals. IC Role / Device Role / Timing Role: Dual-op-amp core implementing precision full-wave rectification with minimal offset-induced zero-crossing error. Use Value: Maintains accuracy down to sub-millivolt inputs due to 25 μV VOS and high open-loop gain, avoiding dead-zone distortion in low-level signal paths. |
Use Scenario: Detecting precise voltage thresholds (e.g., 2.5 V reference) in safety-critical monitoring circuits with hysteresis-free response. IC Role / Device Role / Timing Role: High-gain comparator-amplifier hybrid with programmable threshold and rail-to-rail output swing capability. Use Value: Delivers <100 μV threshold uncertainty using internal 25 μV VOS and 12 V/μV AVO, enabling reliable detection of 0.004% deviations from setpoint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultraprecision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP27GPZ | Higher slew rate (2.8 V/μs vs. 0.3 V/μs), 25 μV VOS but 2.0 μV/°C TCVOS - less stable over temperature | Better for medium-speed precision applications (e.g., active filters); unsuitable where long-term DC stability dominates | Select OP27GPZ only when bandwidth >0.6 MHz is required and thermal drift can be managed externally |
| LTC1050CN8#PBF | Chopper-stabilized architecture: 0.5 μV VOS, 0.01 μV/°C TCVOS, but introduces 100 kHz switching noise and requires external caps | Superior drift performance for metrology-grade systems; incompatible with noise-sensitive RF or audio front-ends | Choose LTC1050CN8#PBF only when sub-μV drift is mandatory and switching artifacts can be filtered or tolerated |
Compared with OP27GPZ and LTC1050CN8#PBF, the OP177FPZ uniquely balances ultralow drift, absence of switching artifacts, and socket-based serviceability - making it optimal for calibration equipment, industrial sensor signal chains, and legacy precision instrumentation requiring field-adjustable offset.
Availability
OP177FPZ is available at Aetrix Electronics and suitable for thermocouple amplifiers, precision differential measurement systems, and absolute value signal conditioners requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for OP177FPZ 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 OP177FPZ belongs to Analog Devices' ultraprecision op-amp product line, engineered specifically for DC-critical applications including scientific instrumentation, industrial process control, and calibration-grade test equipment where offset stability and gain linearity outweigh speed requirements.
FAQ
What is the operating temperature range of the OP177FPZ?
The OP177FPZ is rated for operation from −40°C to +85°C, matching the extended industrial temperature range specified in its ordering guide. This range is validated across all key parameters including input offset voltage, drift, CMRR, and open-loop gain - ensuring consistent performance in harsh environments such as factory automation and outdoor instrumentation where thermal cycling occurs.
Does the OP177FPZ require external components for offset nulling?
Yes, the OP177FPZ provides two dedicated VOS TRIM pins (Pins 1 and 8) that accept an external 20 kΩ potentiometer wired as a three-terminal voltage divider. When adjusted, this configuration allows manual trimming of input offset voltage to ≤1 μV in final system calibration - a capability confirmed in Figure 4 and Table 1 of the official Rev. H datasheet.
Can the OP177FPZ drive capacitive loads directly?
The OP177FPZ is not unity-gain stable with heavy capacitive loads; however, Figure 29 in the datasheet shows a proven isolation method using a 100 Ω series resistor inside the feedback loop. This technique preserves stability with arbitrarily large capacitive loads (e.g., cable-driven outputs or ADC input capacitance) while maintaining accuracy thanks to the device's 12 V/μV open-loop gain suppressing impedance effects.
How does the OP177FPZ compare to chopper-stabilized amplifiers in noise performance?
Unlike chopper-stabilized amplifiers, the OP177FPZ exhibits no 100 kHz switching noise or low-frequency ripple. Its 118 nV/√Hz input noise (1 Hz–100 Hz) is broadband and Gaussian, making it preferable in audio, seismic, or low-noise sensor front-ends where spectral purity matters. Choppers offer lower drift but introduce deterministic artifacts the OP177FPZ avoids entirely.
Is the OP177FPZ pin-compatible with other precision op-amps in PDIP packages?
The OP177FPZ uses the standard 8-lead PDIP pinout defined in Figure 1 of the datasheet: Pin 1 (VOS TRIM), Pin 2 (−IN), Pin 3 (+IN), Pin 4 (V−), Pin 5 (NC), Pin 6 (OUT), Pin 7 (V+), Pin 8 (VOS TRIM). While functionally similar op-amps like OP07CP share this arrangement, direct pin compatibility is not guaranteed due to differences in internal nulling architecture and NC pin usage - always verify schematic integration per device-specific datasheets.
OP177FPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
OP177FPZ FAQ
1.How can I place an order for OP177FPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for OP177FPZ 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 OP177FPZ reliable?
The price and inventory of OP177FPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP177FPZ is usually 5 days.
3.What payment methods are accepted for OP177FPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP177FPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP177FPZ?
OP177FPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP177FPZ 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 OP177FPZ?
For technical support, including OP177FPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP177FPZ requirements.
6.How does Aetrix verify that OP177FPZ is sourced from the original manufacturer or authorized distributors?
All OP177FPZ 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 OP177FPZ meets industry standards.
7.What is the process for return or replacement of OP177FPZ?
All OP177FPZ units undergo pre-shipment inspection (PSI). If there is an issue with OP177FPZ, 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 OP177FPZ part is unused and in its original packaging.
Return procedure for OP177FPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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