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Analog Devices Inc. ADA4177-1ARZ
- Part No.:
- ADA4177-1ARZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADA4177-1ARZ.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,477
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Product details
Overview
ADA4177-1ARZ from Analog Devices is a single-channel, precision rail-to-rail output operational amplifier with OVP and EMI protection. It delivers 60 µV max offset voltage (25°C), 1 µV/°C max drift, 1 nA max input bias current, 8 nV/√Hz voltage noise density at 1 kHz, and operates from ±2.5 V to ±18 V supplies. It is used in thermocouple signal conditioning and shunt current measurement circuits requiring high DC accuracy and robustness.
For engineers reviewing the ADA4177-1ARZ datasheet, ADA4177-1ARZ pinout, ADA4177-1ARZ application, or ADA4177-1ARZ equivalent, this page provides verified specifications, SOIC-8 package layout, real-world use cases in sensor front-ends, and validated alternative options for industrial instrumentation designs.
Technical Context
The ADA4177-1ARZ integrates active overvoltage protection that limits input current to ≤12 mA when stressed up to ±32 V beyond supply rails, and features an on-chip EMI filter delivering 70 dB rejection at 1000 MHz and 90 dB at 2400 MHz. Its input stage uses high-impedance FET architecture with 100 GΩ common-mode resistance and 4 MΩ differential resistance.
It achieves unity-gain stability with >1000 pF capacitive load drive capability without external compensation, supports dual-supply operation across −40°C to +125°C, and exhibits no phase reversal under overdrive conditions - critical for precision closed-loop systems in optical network control and process monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 60 µV max at 25°C (SOIC-8): ensures ≤0.006% gain error in 1 V full-scale 16-bit ADC interfaces. |
| Offset Drift | 1 µV/°C max: contributes <12 µV total drift over −40°C to +85°C ambient, enabling stable RTD bridge amplification. |
| Input Bias Current | 1 nA max at 25°C: allows use with high-impedance sources like piezoresistive sensors without significant voltage drop. |
| Voltage Noise Density | 8 nV/√Hz at 1 kHz: supports low-noise amplification of microvolt-level thermocouple outputs without dominating system noise floor. |
| Supply Range | ±2.5 V to ±18 V: enables direct interface with legacy ±15 V industrial I/O modules and modern low-voltage embedded systems. |
| EMI Rejection | 90 dB at 2400 MHz: suppresses Wi-Fi/Bluetooth interference in wireless base station control circuits without external filtering. |
| Output Drive | 25 mA short-circuit safe: drives 2 kΩ loads to rail with <100 mV dropout, supporting buffered analog outputs in PLC analog modules. |
Pinout & Package
ADA4177-1ARZ is supplied in an 8-lead SOIC package (ARZ suffix) with standard JEDEC MS-012AC footprint, 1.27 mm pitch, and 5.0 mm × 6.2 mm body size.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 8 | NIC | Not internally connected - left unconnected on PCB; no routing or thermal tie required. |
| 2 | −IN | Inverting input: accepts feedback network connection; high-impedance node sensitive to layout parasitics. |
| 3 | +IN | Noninverting input: connects to sensor or reference; protected against ±32 V overvoltage excursions. |
| 4 | V− | Negative supply rail: must be decoupled with ≥100 nF ceramic capacitor near pin. |
| 6 | OUT | Amplifier output: rail-to-rail swing supports full dynamic range into 2 kΩ loads. |
| 7 | V+ | Positive supply rail: requires local 100 nF ceramic bypass capacitor for EMI immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Active Input Overvoltage Protection | Limits input current to ≤12 mA during ±32 V transients, eliminating need for external series resistors or clamps in harsh industrial environments. |
| Integrated EMI Filter | Provides 90 dB rejection at 2400 MHz, preventing RF rectification errors in wireless infrastructure monitoring without added LC filters. |
| Rail-to-Rail Output | Swings within 50 mV of rails at 1 mA load, maximizing usable dynamic range for 16-bit DAC buffer applications. |
| Unity-Gain Stable | Drives >1000 pF capacitive loads directly, enabling direct connection to long cables or ADC input capacitance without isolation resistors. |
| Low Long-Term Drift | 2 µV typical drift over 10,000 hours: maintains calibration integrity in unattended field instruments without periodic recalibration. |
Applications
| Thermocouple Signal Conditioning | Shunt-Based Current Measurement |
|---|---|
Use Scenario: Amplifying µV-level thermocouple outputs (e.g., Type K) in industrial furnace controllers with cold-junction compensation. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with OVP protecting against thermocouple open-circuit faults. Use Value: 60 µV max offset and 1 µV/°C drift minimize temperature error; EMI rejection prevents RF-induced offset shifts in factory-floor RF-noise environments. | Use Scenario: Measuring motor phase current via 10 mΩ shunt resistor in servo drives, requiring high CMRR and low offset. IC Role / Device Role / Timing Role: Low-bias-current difference amplifier input stage rejecting common-mode bus voltage up to ±300 V. Use Value: 122 dB CMRR and 1 nA input bias current prevent gain error from shunt resistor self-heating and leakage paths. |
| Optical Network Laser Bias Control | RTD Bridge Amplification |
Use Scenario: Regulating laser diode bias current in fiber-optic transceivers using feedback from monitor photodiode current. IC Role / Device Role / Timing Role: Transimpedance amplifier with protected inputs handling photodiode dark current variations and ESD events. Use Value: 8 nV/√Hz noise density preserves SNR in low-light detection; ±32 V OVP withstands electrostatic discharge during hot-plug module insertion. | Use Scenario: Linearizing and amplifying Wheatstone bridge output from 100 Ω Pt100 RTDs in HVAC sensor nodes. IC Role / Device Role / Timing Role: Low-drift, low-noise buffer for 3-wire RTD configurations with lead-wire compensation. Use Value: 2 µV/10,000 hr long-term drift ensures 5-year calibration stability; rail-to-rail output fully utilizes 3.3 V ADC reference range. |
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 | Zero-drift chopper architecture; 1 µV max offset but higher 1/f noise and 6 µV p-p noise (0.1–10 Hz). | Better DC accuracy but unsuitable for low-frequency sensor signals where chopper ripple causes aliasing. | Select AD8628ARZ only if ultra-low offset dominates over broadband noise and EMI immunity requirements. |
| OP2177ARZ | No integrated OVP or EMI filter; 25 µV max offset, 0.6 µV/°C drift, 400 µA supply current. | Lacks ±32 V input protection and RF rejection - requires external protection circuitry in noisy environments. | Choose OP2177ARZ for cost-sensitive, low-noise applications where board space permits discrete protection components. |
Compared with AD8628ARZ and OP2177ARZ, ADA4177-1ARZ uniquely combines OVP, EMI filtering, and sub-µV/°C drift in one SOIC-8 package - eliminating external protection while maintaining DC precision for industrial sensor front-ends.
Availability
ADA4177-1ARZ is available at Aetrix Electronics and suitable for thermocouple signal conditioning, shunt-based current measurement, optical network laser bias control, and RTD bridge amplification requiring stable component supply across extended temperature ranges.
Supply support for ADA4177-1ARZ 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 ADA4177 family was designed specifically for precision sensor signal conditioning in harsh industrial and communications infrastructure environments where overvoltage transients and RF interference threaten measurement integrity.
FAQ
What is the maximum supply voltage for ADA4177-1ARZ?
The ADA4177-1ARZ has an absolute maximum supply voltage rating of 36 V (±18 V). It is fully specified from ±2.5 V to ±15 V and operates reliably across the full ±2.5 V to ±18 V range. Operation beyond ±18 V is not recommended for long-term reliability, as power dissipation and junction temperature rise significantly above that point.
Does ADA4177-1ARZ require external compensation for unity-gain stability?
No, ADA4177-1ARZ is unity-gain stable and does not require external compensation. The amplifier maintains stability with capacitive loads exceeding 1000 pF, enabling direct driving of ADC inputs, long cables, or RC anti-aliasing filters without isolation resistors or compensation networks.
What does the "ARZ" suffix indicate for ADA4177-1ARZ?
The "ARZ" suffix denotes the 8-lead SOIC package (JEDEC MS-012AC) with standard lead finish and tape-and-reel packaging. This is the industrial-grade version rated for −40°C to +125°C operation and qualified per Analog Devices' automotive and industrial reliability standards.
Can ADA4177-1ARZ be used as a comparator?
While ADA4177-1ARZ can function as a slow comparator in non-critical applications, it is not optimized for that role. Its slew rate (1.5 V/µs) and lack of internal hysteresis make it unsuitable for high-speed or noise-immune threshold detection. For comparator functions, Analog Devices recommends dedicated devices such as the ADCMP341 or AD8611.
How does the EMI rejection performance of ADA4177-1ARZ compare to standard op amps?
ADA4177-1ARZ provides 90 dB rejection at 2400 MHz - significantly exceeding typical op amps (<20 dB). This is achieved via an integrated on-die EMI filter on the +IN pin, which prevents RF rectification that causes DC offset shifts. Standard op amps require external ferrite beads or RC filters to achieve comparable immunity.
ADA4177-1ARZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.5V/µs
- Gain Bandwidth Product:
- 3.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 300 pA
- Voltage - Input Offset:
- 3 µV
- Current - Supply:
- 500µA
- 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:
- 8-SOIC
ADA4177-1ARZ FAQ
1.How can I place an order for ADA4177-1ARZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4177-1ARZ 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 ADA4177-1ARZ reliable?
The price and inventory of ADA4177-1ARZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4177-1ARZ is usually 5 days.
3.What payment methods are accepted for ADA4177-1ARZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4177-1ARZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4177-1ARZ?
ADA4177-1ARZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4177-1ARZ 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 ADA4177-1ARZ?
For technical support, including ADA4177-1ARZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4177-1ARZ requirements.
6.How does Aetrix verify that ADA4177-1ARZ is sourced from the original manufacturer or authorized distributors?
All ADA4177-1ARZ 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 ADA4177-1ARZ meets industry standards.
7.What is the process for return or replacement of ADA4177-1ARZ?
All ADA4177-1ARZ units undergo pre-shipment inspection (PSI). If there is an issue with ADA4177-1ARZ, 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 ADA4177-1ARZ part is unused and in its original packaging.
Return procedure for ADA4177-1ARZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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