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Analog Devices Inc. ADA4177-4ARUZ
- Part No.:
- ADA4177-4ARUZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADA4177-4ARUZ.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:725
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Product details
Overview
ADA4177-4ARUZ from Analog Devices is a quad-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), low offset voltage (60 µV max at 25°C), and 500 µA typical supply current per amplifier. It operates from ±2.5 V to ±18 V over −40°C to +125°C and is used in high-reliability sensor signal conditioning for thermocouples, RTDs, and shunt current measurement.
For engineers reviewing the ADA4177-4ARUZ datasheet, ADA4177-4ARUZ pinout, ADA4177-4ARUZ application, or ADA4177-4ARUZ equivalent, key selection criteria include input overvoltage robustness, EMI rejection at RF frequencies, long-term offset drift (<2 µV/10k hrs), rail-to-rail output swing under load, and quad-channel channel separation (127 dB @ 1 kHz).
Technical Context
The ADA4177-4ARUZ implements active input overvoltage protection circuitry that limits input current to ≤12 mA when common-mode voltage exceeds ±32 V beyond supply rails, preventing latch-up and enabling direct connection to industrial field signals. Its integrated EMI filter suppresses RF rectification at the input stage without external components.
It features a precision bipolar input stage delivering 1 µV/°C max offset drift, 8 nV/√Hz voltage noise density at 1 kHz, and unity-gain stability with >1000 pF capacitive load drive capability - eliminating need for external compensation in most configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 60 µV maximum at 25°C - enables sub-0.01% accuracy in 16-bit DAQ front-ends without trimming. |
| Input Overvoltage Protection | ±32 V beyond supply rails - allows direct interfacing to ±24 V industrial control signals without external clamping. |
| EMI Rejection | 70 dB @ 1000 MHz, 90 dB @ 2400 MHz - prevents RF-induced DC offset errors in wireless base station monitoring circuits. |
| Supply Current per Amp | 500 µA typical - supports low-power, multi-channel instrumentation with <2 mA total quiescent draw. |
| Rail-to-Rail Output Swing | ±4.75 V @ ±5 V supplies, ±14.75 V @ ±15 V, 7 mA load - maximizes dynamic range in single-supply or dual-supply systems. |
| Gain Bandwidth Product | 3.5 MHz - supports stable closed-loop gain ≥100 up to ~35 kHz with minimal phase margin degradation. |
| Channel Separation | 127 dB @ 1 kHz - ensures minimal crosstalk in simultaneous multi-sensor acquisition (e.g., 4-wire RTD + thermocouple + strain gage + shunt). |
Pinout & Package
ADA4177-4ARUZ is packaged in a 14-lead TSSOP (ARUZ suffix), 5.0 mm × 4.4 mm body, 0.65 mm pitch, with exposed pad for thermal enhancement. Pin 11 is V−, pins 4 and 11 are power rails, and all four amplifiers share common supply connections.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 | OUT A / OUT B / OUT C / OUT D | Amplifier output terminals - each drives independently; rail-to-rail swing supports full-scale ADC input ranges. |
| 2, 6, 9, 13 | −IN A / −IN B / −IN C / −IN D | Inverting inputs - protected by internal OVP diodes and EMI filter; tolerate ±32 V CM excursions. |
| 3, 5, 10, 12 | +IN A / +IN B / +IN C / +IN D | Noninverting inputs - identical OVP/EMI protection; matched to −IN for optimal CMRR performance. |
| 4 | V+ | Positive supply rail - connects to all four amplifiers' positive supplies; decoupling required within 1 cm. |
| 11 | V− | Negative supply rail - shared return for all channels; low-impedance ground plane recommended beneath exposed pad. |
Key Features
| Feature | Design Value |
|---|---|
| Active Input Overvoltage Protection | Clamps input current to ≤12 mA during ±32 V CM transients - eliminates need for external series resistors or TVS diodes. |
| Integrated EMI Filter | Rejects 70–90 dB of RF interference at 1–2.4 GHz - prevents demodulation artifacts in noisy factory environments. |
| Low Long-Term Drift | 2 µV typical drift over 10,000 hours - ensures calibration stability in unattended industrial monitoring systems. |
| Rail-to-Rail Output with High Load Drive | Delivers ±4.75 V swing into 7 mA load at ±5 V supplies - supports driving 12-bit SAR ADCs directly without buffers. |
| High Channel Isolation | 127 dB crosstalk suppression at 1 kHz - enables simultaneous high-resolution measurement of 4 independent sensors on one IC. |
Applications
| Thermocouple Signal Conditioning | RTD Bridge Amplification |
|---|---|
|
Use Scenario: Cold-junction compensation and microvolt-level thermocouple voltage amplification in industrial furnace controllers. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with OVP protecting against thermocouple wire shorts to 24 V rails. Use Value: 60 µV max offset and 1 µV/°C drift enable ±0.5°C accuracy over −40°C to +125°C ambient without recalibration. |
Use Scenario: Excitation and differential amplification of 3-wire or 4-wire platinum RTD bridges in HVAC and process control. IC Role / Device Role / Timing Role: Low-bias-current, high-CMRR amplifier for bridge output sensing; rejects common-mode noise from shared excitation sources. Use Value: 1 nA max input bias current minimizes self-heating error in high-impedance RTD legs; 122 dB CMRR suppresses line-frequency pickup. |
| Strain Gage Wheatstone Bridge | Shunt-Based Current Monitoring |
|
Use Scenario: Full-bridge strain gage readout in structural health monitoring and load-cell interfaces. IC Role / Device Role / Timing Role: Low-noise, low-drift amplifier for mV-level differential outputs; OVP protects against ESD events during field wiring. Use Value: 8 nV/√Hz noise density and 175 nV p-p 0.1–10 Hz noise preserve resolution down to 0.001% full scale in 24-bit ΣΔ systems. |
Use Scenario: Bidirectional current sensing across low-value shunts (e.g., 10–100 mΩ) in motor drives and battery management. IC Role / Device Role / Timing Role: Precision difference amplifier with rail-to-rail output driving ADC reference range; OVP handles inductive kickback. Use Value: ±32 V OVP withstands >100 V transients during MOSFET switching; 500 µA quiescent current enables always-on monitoring. |
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 | Single-channel, 1 µV max offset, no OVP, 1.1 µV/°C drift, 1.2 mA supply current. | Lacks ±32 V input protection and EMI filtering - requires external protection in harsh environments. | Choose AD8628ARZ only for lab-grade, low-noise, single-channel designs where OVP is unnecessary and higher supply current is acceptable. |
| ADA4522-4ARUZ | Quad-channel, zero-drift architecture, 3 µV max offset, 0.005 µV/°C drift, 1.2 mA supply current, no OVP. | Superior drift performance but no overvoltage protection or EMI filter - unsuitable for direct field-sensor interfacing. | Choose ADA4522-4ARUZ when ultra-low drift dominates requirements and external protection can be added; avoid where field wiring exposure exists. |
Compared with AD8628ARZ and ADA4522-4ARUZ, ADA4177-4ARUZ uniquely combines quad-channel integration, ±32 V OVP, integrated EMI rejection, and low power - making it the only option for ruggedized, space-constrained, multi-sensor industrial front-ends requiring no external protection components.
Availability
ADA4177-4ARUZ is available at Aetrix Electronics and suitable for industrial process control, precision test equipment, and automotive battery monitoring systems requiring stable component supply across extended temperature and long product lifecycles.
Supply support for ADA4177-4ARUZ 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 Wilmington, MA.
The ADA4177 family was designed specifically for precision sensor signal conditioning in harsh industrial and instrumentation environments - prioritizing input robustness, EMI immunity, and long-term dc accuracy over raw speed or ultra-low noise.
FAQ
What is the maximum supply voltage range supported by the ADA4177-4ARUZ?
The ADA4177-4ARUZ operates over a dual-supply range of ±2.5 V to ±18 V, with absolute maximum supply rating of 36 V. It is fully specified at ±5 V and ±15 V, and maintains precision performance across this entire operating window. The ADA4177-4ARUZ's internal protection circuitry remains functional across the full supply range, ensuring consistent OVP behavior regardless of rail choice.
Does the ADA4177-4ARUZ require external compensation for capacitive loads?
No, the ADA4177-4ARUZ is unity-gain stable and drives capacitive loads exceeding 1000 pF without external compensation. This capability is verified across temperature and supply conditions and eliminates the need for isolation resistors or feedback capacitor adjustments in typical sensor interface configurations. The ADA4177-4ARUZ maintains phase margin >45° even with 2 nF loads, as confirmed in the datasheet's Typical Performance Characteristics section.
How does the EMI rejection of the ADA4177-4ARUZ improve system-level reliability?
The ADA4177-4ARUZ integrates an on-chip EMI filter providing 70 dB rejection at 1000 MHz and 90 dB at 2400 MHz, preventing RF signals from rectifying into erroneous DC offsets at the amplifier input. This eliminates measurement errors in wireless infrastructure monitoring, factory automation, and medical devices exposed to cellular/WiFi emissions. The ADA4177-4ARUZ achieves this without external LC filters or ferrite beads, reducing BOM count and layout sensitivity.
Can the ADA4177-4ARUZ be used as a comparator?
Yes, the ADA4177-4ARUZ can be used as a comparator in non-critical applications, though it lacks dedicated comparator features like internal hysteresis or rail-to-rail input. Its large signal voltage gain (>100 dB), low input offset, and fast settling time (3.5 µs to 0.01%) support basic threshold detection. However, for high-speed or precision comparison, a dedicated comparator such as the ADCMP341 is recommended. The ADA4177-4ARUZ datasheet explicitly addresses this use case in Section "Using the ADA4177-1/ADA4177-2/ADA4177-4 as a Comparator".
What is the thermal resistance (θJA) of the ADA4177-4ARUZ in its TSSOP package?
The ADA4177-4ARUZ in the 14-lead TSSOP package (ARUZ) has a junction-to-ambient thermal resistance (θJA) of 240°C/W, as specified in Table 5 of the datasheet. This value assumes standard JEDEC 2-layer board conditions. For high-power-density layouts, the exposed pad must be soldered to a thermal plane to realize the full benefit of the package's thermal design. The ADA4177-4ARUZ's low 500 µA per amplifier supply current inherently limits self-heating, keeping junction temperature rise well below critical thresholds in typical operation.
ADA4177-4ARUZ 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:
- 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 (x4 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:
- 14-TSSOP
ADA4177-4ARUZ FAQ
1.How can I place an order for ADA4177-4ARUZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4177-4ARUZ 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 ADA4177-4ARUZ reliable?
The price and inventory of ADA4177-4ARUZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4177-4ARUZ is usually 5 days.
3.What payment methods are accepted for ADA4177-4ARUZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4177-4ARUZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4177-4ARUZ?
ADA4177-4ARUZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4177-4ARUZ 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 ADA4177-4ARUZ?
For technical support, including ADA4177-4ARUZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4177-4ARUZ requirements.
6.How does Aetrix verify that ADA4177-4ARUZ is sourced from the original manufacturer or authorized distributors?
All ADA4177-4ARUZ 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 ADA4177-4ARUZ meets industry standards.
7.What is the process for return or replacement of ADA4177-4ARUZ?
All ADA4177-4ARUZ units undergo pre-shipment inspection (PSI). If there is an issue with ADA4177-4ARUZ, 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 ADA4177-4ARUZ part is unused and in its original packaging.
Return procedure for ADA4177-4ARUZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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