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Analog Devices Inc. ADA4177-2ARMZ
- Part No.:
- ADA4177-2ARMZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADA4177-2ARMZ.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:737
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Product details
Overview
ADA4177-2ARMZ from Analog Devices is a dual-channel, precision rail-to-rail output operational amplifier with OVP (±32 V beyond supplies), integrated EMI filtering (70 dB @ 1 GHz, 90 dB @ 2.4 GHz), 60 µV max offset voltage at 25°C, 1 µV/°C max drift, and 1 nA max input bias current. It operates from ±2.5 V to ±18 V and delivers 3.5 MHz gain bandwidth in sensor signal conditioning circuits requiring high DC accuracy and robustness.
For engineers reviewing the ADA4177-2ARMZ datasheet, ADA4177-2ARMZ pinout, ADA4177-2ARMZ application, or ADA4177-2ARMZ equivalent, key selection criteria include input overvoltage protection margin, EMI rejection at cellular/Wi-Fi frequencies, low 1/f noise for thermocouple/RTD front-ends, and dual-channel matching for differential sensing architectures.
Technical Context
The ADA4177-2ARMZ implements active input overvoltage protection that clamps fault currents to ≤12 mA when inputs exceed supply rails by up to ±32 V, preventing latch-up and enabling direct connection to industrial field sensors. Its integrated EMI filter attenuates RF interference before the input stage, delivering 70 dB rejection at 1000 MHz and 90 dB at 2400 MHz without external components.
Internally compensated and unity-gain stable, the device achieves 3.5 MHz GBP and 6 MHz −3 dB bandwidth (AV = 1) while maintaining 100 dB minimum large-signal voltage gain across −40°C to +125°C. Output drives ≥25 mA into loads with rail-to-rail swing (±4.95 V @ ±5 V, ±14.95 V @ ±15 V, 1 mA load) and no phase reversal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 60 µV max at 25°C - enables sub-0.01% error in 16-bit precision measurement systems without trimming. |
| Offset Drift | 1 µV/°C max - ensures <120 µV total drift over −40°C to +125°C, critical for uncooled industrial instrumentation. |
| Input Bias Current | 1 nA max at 25°C - supports high-impedance sources (e.g., pH electrodes, piezoresistive sensors) without significant voltage error. |
| EMI Rejection | 70 dB @ 1000 MHz, 90 dB @ 2400 MHz - suppresses cellular/Wi-Fi interference in wireless base station control loops. |
| OVP Range | Input protected to VS ± 32 V - allows direct interfacing with 24 V industrial fieldbus signals without external protection diodes. |
| Supply Range | ±2.5 V to ±18 V - supports both low-voltage portable instrumentation and high-voltage process control front-ends. |
| Noise Density | 8 nV/√Hz @ 1 kHz - provides clean amplification for low-level thermocouple and strain gage outputs. |
Pinout & Package
ADA4177-2ARMZ is packaged in an 8-lead SOIC (Small Outline Integrated Circuit) with standard pin spacing (1.27 mm), RoHS-compliant matte tin lead finish, and thermal resistance θJA = 158°C/W on 2-layer JEDEC PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - rail-to-rail capable, drives ≥25 mA, no phase reversal under overload. |
| 2 | −IN A | Inverting input of Channel A - protected to ±32 V beyond supplies, 1 pF differential capacitance. |
| 3 | +IN A | Noninverting input of Channel A - same OVP/EMI specs as −IN A, 8 pF common-mode capacitance. |
| 4 | V− | Negative supply rail - accepts −2.5 V to −18 V; internal ESD protection per HBM 4 kV. |
| 5 | +IN B | Noninverting input of Channel B - electrically isolated from Channel A (127 dB channel separation @ 1 kHz). |
| 6 | −IN B | Inverting input of Channel B - matched offset drift and bias current to Channel A for differential configurations. |
| 7 | OUT B | Amplifier B output - identical AC/DC performance to OUT A, supports independent closed-loop design. |
| 8 | V+ | Positive supply rail - accepts +2.5 V to +18 V; supplies both channels from single pair. |
Key Features
| Feature | Design Value |
|---|---|
| Active Overvoltage Protection | Limits input fault current to ≤12 mA at ±32 V excursion, eliminating need for external series resistors or clamps in harsh environments. |
| Integrated EMI Filter | On-chip RC network rejects 70 dB of 1 GHz RF energy and 90 dB at 2.4 GHz, preventing demodulation artifacts in sensitive analog front-ends. |
| Rail-to-Rail Output | Swings within 50 mV of rails at 1 mA load (±4.95 V @ ±5 V), maximizing dynamic range in low-supply systems. |
| Low Long-Term Drift | 2 µV typical drift over 10,000 hours - reduces calibration frequency in deployed test equipment and medical monitors. |
| High CMRR | 130 dB typical (−40°C to +125°C: 120 dB) - rejects common-mode noise in shunt current sensing and motor control feedback paths. |
Applications
| Thermocouple Signal Conditioning | Strain Gage Wheatstone Bridge Amplification |
|---|---|
Use Scenario: Amplifying microvolt-level thermocouple outputs (e.g., Type K, −200°C to +1350°C) in furnace controllers with cold-junction compensation. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with ultra-low offset drift and 1/f noise suppression. Use Value: Enables <±0.5°C system accuracy over full temperature range without periodic recalibration. | Use Scenario: Conditioning bridge outputs from metal foil strain gages in structural health monitoring of bridges or aircraft landing gear. IC Role / Device Role / Timing Role: Low-bias-current, high-CMRR differential amplifier driving 24-bit sigma-delta ADCs. Use Value: Maintains <0.005% linearity error despite gage resistance up to 10 kΩ and ambient temperature swings. |
| Optical Network Laser Diode Bias Control | Industrial Shunt Current Sensing |
Use Scenario: Regulating bias current for DFB lasers in 10G/25G optical transceivers where EMI from high-speed digital circuitry must not modulate laser output. IC Role / Device Role / Timing Role: High-PSRR (145 dB typical), EMI-hardened transimpedance amplifier in feedback loop. Use Value: Prevents 2.4 GHz Wi-Fi interference from inducing >10 µA current ripple in laser bias, avoiding optical SNR degradation. | Use Scenario: Measuring motor phase current via 1 mΩ shunt resistor in servo drives operating in electrically noisy factory environments. IC Role / Device Role / Timing Role: Dual-channel op amp configured as difference amplifier and buffer for isolated current sensing. Use Value: Withstands 32 V transients induced by IGBT switching while delivering 16-bit resolution at 100 kSPS. |
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 architecture (chopper-stabilized); 1 µV max VOS, but higher 1/f noise (0.12 µV p-p) and no OVP. | Superior DC accuracy in battery-powered portable instruments; unsuitable for field-connected industrial sensors. | Select AD8628ARZ only when ultra-low drift dominates over ruggedness and EMI immunity. |
| OP2177ARZ | Lower noise (2.9 nV/√Hz), no integrated EMI filter or OVP; 12 V max supply, −40°C to +85°C temp range. | Better for low-noise audio preamps or lab-grade bench equipment; lacks protection for industrial deployment. | Choose OP2177ARZ when noise is primary constraint and environment is ESD-controlled lab setting. |
Compared with AD8628ARZ and OP2177ARZ, ADA4177-2ARMZ uniquely combines ±32 V input protection, 90 dB EMI rejection at 2.4 GHz, and 125°C operation-making it the only option qualified for unshielded field sensor interfaces in optical transport and industrial automation.
Availability
ADA4177-2ARMZ is available at Aetrix Electronics and suitable for wireless base station control circuits, optical network monitoring systems, and precision industrial sensor interfaces requiring stable component supply across extended temperature and voltage ranges.
Supply support for ADA4177-2ARMZ 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 signal conditioning in harsh electromagnetic and thermal environments-targeting industrial process control, optical communications, and test/measurement equipment where reliability trumps raw speed.
FAQ
What is the maximum input overvoltage rating for ADA4177-2ARMZ?
The ADA4177-2ARMZ features active input overvoltage protection rated to VS ± 32 V - meaning inputs can safely withstand up to +32 V above the positive supply or −32 V below the negative supply for transient events. This eliminates external protection components in 24 V industrial systems and enables direct connection to field sensors without risk of damage.
Does ADA4177-2ARMZ require external compensation for unity-gain stability?
No, ADA4177-2ARMZ is internally compensated and unity-gain stable across its full operating temperature range (−40°C to +125°C). It achieves 3.5 MHz unity-gain crossover and 6 MHz −3 dB bandwidth with no external capacitors or feedback networks required - simplifying layout and reducing bill-of-materials cost.
What package type is used for ADA4177-2ARMZ?
ADA4177-2ARMZ is supplied in an 8-lead SOIC (Small Outline Integrated Circuit) package with standard 1.27 mm pitch, RoHS-compliant matte tin leads, and JEDEC MS-012AC footprint. This package supports automated assembly and provides θJA = 158°C/W thermal resistance on a 2-layer PCB.
How does the EMI rejection performance of ADA4177-2ARMZ compare to standard op amps?
ADA4177-2ARMZ integrates an on-chip EMI filter delivering 70 dB rejection at 1000 MHz and 90 dB at 2400 MHz - far exceeding typical op amps (<20 dB). This prevents RF demodulation in sensitive analog paths, making ADA4177-2ARMZ ideal for optical transceivers and wireless infrastructure where nearby GSM/Bluetooth/Wi-Fi signals would otherwise corrupt measurements.
Can ADA4177-2ARMZ drive capacitive loads without oscillation?
Yes, ADA4177-2ARMZ is specified to remain stable with capacitive loads exceeding 1000 pF without external compensation. Its robust phase margin and low-output impedance (0.08 Ω typical at 1 kHz) ensure reliable operation when driving ADC input filters, long cables, or piezoelectric sensor interfaces - a key advantage over many precision op amps requiring isolation resistors.
ADA4177-2ARMZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- 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 (x2 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:
- 8-MSOP
ADA4177-2ARMZ FAQ
1.How can I place an order for ADA4177-2ARMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4177-2ARMZ 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 ADA4177-2ARMZ reliable?
The price and inventory of ADA4177-2ARMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4177-2ARMZ is usually 5 days.
3.What payment methods are accepted for ADA4177-2ARMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4177-2ARMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4177-2ARMZ?
ADA4177-2ARMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4177-2ARMZ 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 ADA4177-2ARMZ?
For technical support, including ADA4177-2ARMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4177-2ARMZ requirements.
6.How does Aetrix verify that ADA4177-2ARMZ is sourced from the original manufacturer or authorized distributors?
All ADA4177-2ARMZ 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 ADA4177-2ARMZ meets industry standards.
7.What is the process for return or replacement of ADA4177-2ARMZ?
All ADA4177-2ARMZ units undergo pre-shipment inspection (PSI). If there is an issue with ADA4177-2ARMZ, 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 ADA4177-2ARMZ part is unused and in its original packaging.
Return procedure for ADA4177-2ARMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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