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Analog Devices Inc. OP4177ARUZ
- Part No.:
- OP4177ARUZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OP4177ARUZ.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,448
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Product details
Overview
OP4177ARUZ from Analog Devices is a quad-channel, precision low-noise operational amplifier optimized for high-accuracy sensor signal conditioning and industrial measurement systems. It delivers 60 μV max offset voltage, 0.9 μV/°C max drift, 2 nA max input bias current, 8.5 nV/√Hz voltage noise density at 1 kHz, and operates from ±2.5 V to ±15 V supplies - enabling stable DC-coupled amplification in RTD, thermocouple, and shunt current sensing circuits.
For engineers reviewing the OP4177ARUZ datasheet, OP4177ARUZ pinout, OP4177ARUZ application, or OP4177ARUZ equivalent, key selection considerations include its guaranteed −40°C to +125°C operation, 14-lead TSSOP (RU) package with no-connect pins, channel separation >120 dB at 100 kHz, and immunity to input overvoltage-induced phase reversal - critical for ruggedized instrumentation and optical network control.
Technical Context
The OP4177ARUZ implements a precision bipolar-input architecture with internal 500 Ω series input protection resistors, enabling safe operation with input signals up to 2.5 V beyond either supply rail without external components. Its unity-gain-stable design supports direct use in gain-of-1 buffers and active filters without compensation.
Each of the four amplifiers features matched CMRR, PSRR, and AVO > 120 dB across temperature, with output drive capability of ±10 mA into 2 kΩ loads and rail-to-rail output swing within 1.2 V of each supply - ensuring consistent performance in multi-channel differential front-ends and precision analog I/O modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 75 μV max at 25°C; ensures ≤0.075 mV error in 1 V full-scale measurements before trimming |
| Offset Drift | 0.9 μV/°C max over −40°C to +125°C; contributes <1.2 μV total drift across 135°C range |
| Input Bias Current | ±2 nA max over full temperature range; enables use with >100 kΩ source impedances without significant offset shift |
| Voltage Noise Density | 8.5 nV/√Hz at 1 kHz; dominates total noise in low-source-resistance (<4 kΩ) sensor interfaces |
| Supply Current per Amp | 500 μA max at 25°C; allows four-channel operation at <2 mA total, suitable for low-power portable instruments |
| CMRR / PSRR | ≥114 dB min over temperature; rejects >500,000:1 common-mode or supply ripple interference in precision DC circuits |
| Gain Bandwidth | 1.3 MHz; supports stable closed-loop gains up to ~130 at 10 kHz for anti-aliasing filter stages |
Pinout & Package
The OP4177ARUZ is packaged in a 14-lead TSSOP (RU suffix), with exposed pad for thermal enhancement. Pin 1 is marked by a dot; pins 5, 6, 9, and 10 are no-connect (NC) terminals and must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output; capable of ±10 mA drive into 2 kΩ load with <1.2 V headroom to rails |
| 2 | –IN A | Inverting input of Amp A; protected by internal 500 Ω resistor; accepts signals up to VS±2.5 V |
| 3 | +IN A | Noninverting input of Amp A; same protection and voltage range as –IN A |
| 4 | V+ | Positive supply rail; supports ±2.5 V to ±15 V dual-supply operation |
| 5 | NC | No-connect; must be left floating - not internally bonded |
| 6 | NC | No-connect; must be left floating - not internally bonded |
| 7 | +IN B | Noninverting input of Amp B; electrically identical to +IN A |
| 8 | –IN B | Inverting input of Amp B; electrically identical to –IN A |
| 9 | NC | No-connect; must be left floating - not internally bonded |
| 10 | NC | No-connect; must be left floating - not internally bonded |
| 11 | V– | Negative supply rail; referenced to all four amplifiers' internal circuitry |
| 12 | OUT C | Amplifier C output; fully independent; shares same specs and drive as OUT A |
| 13 | +IN C | Noninverting input of Amp C; matches performance of other +IN pins |
| 14 | –IN C | Inverting input of Amp C; matches performance of other –IN pins |
| Exposed Pad | Thermal / GND | Internally connected to V–; must be soldered to PCB ground plane for thermal stability |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Guaranteed immunity to polarity inversion even when inputs exceed supply rails - eliminates system lockup risk in overvoltage transients |
| Input overvoltage protection | Internal 500 Ω series resistors allow ±2.5 V beyond supplies at inputs without external components or performance degradation |
| Wide temperature operation | Full specification from −40°C to +125°C - widest range among surface-mount precision op amps for automotive under-hood or industrial edge nodes |
| High channel separation | −120 dB at 100 kHz between any two amplifiers - preserves signal integrity in multi-channel simultaneous-sampling data acquisition |
| Low warm-up drift | ΔVOS < 0.3 μV during first 120 seconds after power-on - critical for metrology-grade calibration stability |
Applications
| Thermocouple Signal Conditioning | RTD Bridge Amplification |
|---|---|
Use Scenario: Amplifying microvolt-level Seebeck voltages from Type K thermocouples in furnace controllers with cold-junction compensation. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end, rejecting common-mode noise from heater EMI. Use Value: 0.9 μV/°C max drift ensures <1.2 °C error contribution over full industrial temperature range without recalibration. | Use Scenario: Exciting and measuring 100 Ω Pt100 RTDs in HVAC airflow sensors using constant-current excitation and ratiometric ADC conversion. IC Role / Device Role / Timing Role: Low-bias-current, low-noise difference amplifier converting bridge imbalance to single-ended voltage for ADC input. Use Value: 2 nA max input bias current prevents >0.2 Ω effective resistance error in 100 Ω RTD legs, preserving 0.1 °C resolution. |
| Shunt-Based Current Monitoring | Precision Active Filtering |
Use Scenario: Measuring bidirectional motor phase currents via 1 mΩ shunts in servo drives, requiring high CMRR and rail-to-rail output swing. IC Role / Device Role / Timing Role: High-common-mode rejection current-sense amplifier with gain of 100, operating on ±15 V supplies. Use Value: 120 dB min CMRR suppresses >100 V common-mode bus noise to <10 μV referred-to-input, enabling 10-bit accuracy at 100 A full scale. | Use Scenario: Implementing 4th-order low-pass anti-aliasing filters in 16-bit data acquisition modules with minimal passband distortion. IC Role / Device Role / Timing Role: Unity-gain-stable, low-distortion op amp in Sallen-Key topology with 1.3 MHz GBW limiting aliasing above 100 kHz. Use Value: 8.5 nV/√Hz noise density ensures <1.5 μVRMS integrated noise in 10 kHz bandwidth - below 1 LSB of 16-bit 5 V FS ADC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP4177ARZ | Same electrical specs; supplied in 14-lead SOIC_N (R-14) instead of TSSOP (RU-14); θJA = 120°C/W vs. 240°C/W | Better thermal performance in high-power-density layouts; larger footprint limits board space efficiency | Select OP4177ARZ if PCB layout allows SOIC and thermal management prioritizes lower junction rise over size |
| AD8628ARUZ | Chopper-stabilized; 1 μV max VOS, but higher 1/f noise and 1.5 MHz GBW; 500 μA supply current; same RU-14 package | Superior DC precision for ultra-low-drift applications; less suitable for wideband filtering or fast settling | Select AD8628ARUZ only when sub-microvolt offset is mandatory and bandwidth <100 kHz suffices |
Compared with OP4177ARZ, the OP4177ARUZ trades thermal resistance for compactness - critical in space-constrained modules - while AD8628ARUZ offers lower offset at the cost of increased noise peaking and reduced bandwidth, making it unsuitable for dynamic sensor signal chains.
Availability
OP4177ARUZ is available at Aetrix Electronics and suitable for precision instrumentation, industrial process control, and optical network monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OP4177ARUZ 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 OPx177 family was designed specifically for high-accuracy, low-drift DC signal conditioning in harsh environments - extending the legacy of the OP07 with modern packaging, wider temperature range, and enhanced robustness against input overvoltage and phase reversal.
FAQ
What is the maximum supply voltage range supported by the OP4177ARUZ?
The OP4177ARUZ supports dual-supply operation from ±2.5 V to ±15 V, with absolute maximum supply rating of 36 V total (i.e., V+ − V− ≤ 36 V). Operation at ±15 V enables full output swing of ±14.1 V at 1 mA load, while ±2.5 V operation maintains functionality with reduced headroom - verified across −40°C to +125°C.
Does the OP4177ARUZ require external input protection resistors?
No. The OP4177ARUZ integrates 500 Ω series resistors on both inputs, allowing input signals up to 2.5 V beyond either supply rail without external components. This eliminates need for discrete protection in most industrial sensor interfaces - confirmed in the Functional Description and Input Overvoltage Protection sections of the Rev. I datasheet.
How many of the 14 pins on the OP4177ARUZ are functional versus no-connect?
The OP4177ARUZ has 10 functional pins (OUT A, –IN A, +IN A, V+, +IN B, –IN B, V–, OUT C, +IN C, –IN C) and 4 no-connect pins (pins 5, 6, 9, 10), as shown in Figure 6 of the datasheet. All NC pins are unconnected internally and must remain unattached in PCB layout to avoid parasitic coupling or thermal stress.
Can the OP4177ARUZ drive capacitive loads without oscillation?
Yes. The OP4177ARUZ is unity-gain stable and specified to drive capacitive loads exceeding 1000 pF without external compensation - validated in Typical Performance Characteristics (Figure 17 shows overshoot <5% up to 10 nF). This enables direct connection to ADC input capacitors or long PCB traces in data acquisition systems.
What is the guaranteed channel-to-channel isolation for the OP4177ARUZ at high frequency?
The OP4177ARUZ guarantees ≥120 dB channel separation at 100 kHz, as specified in Table 1 (Multichannel Channel Separation). This level of isolation prevents crosstalk-induced errors in simultaneous multi-channel sampling - critical for 4-channel sensor arrays or differential pair + reference configurations.
OP4177ARUZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 0.7V/µs
- Gain Bandwidth Product:
- 1.3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 500 pA
- Voltage - Input Offset:
- 15 µV
- Current - Supply:
- 400µA (x4 Channels)
- Current - Output / Channel:
- 10 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:
- 14-TSSOP
OP4177ARUZ FAQ
1.How can I place an order for OP4177ARUZ through Aetrix?
Please submit a Request for Quotation (RFQ) for OP4177ARUZ 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 OP4177ARUZ reliable?
The price and inventory of OP4177ARUZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP4177ARUZ is usually 5 days.
3.What payment methods are accepted for OP4177ARUZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP4177ARUZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP4177ARUZ?
OP4177ARUZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP4177ARUZ 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 OP4177ARUZ?
For technical support, including OP4177ARUZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP4177ARUZ requirements.
6.How does Aetrix verify that OP4177ARUZ is sourced from the original manufacturer or authorized distributors?
All OP4177ARUZ 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 OP4177ARUZ meets industry standards.
7.What is the process for return or replacement of OP4177ARUZ?
All OP4177ARUZ units undergo pre-shipment inspection (PSI). If there is an issue with OP4177ARUZ, 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 OP4177ARUZ part is unused and in its original packaging.
Return procedure for OP4177ARUZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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