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Analog Devices Inc. OP484ES
- Part No.:
- OP484ES
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OP484ES.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,757
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Product details
Overview
OP484ES from Analog Devices is a quad-channel, precision rail-to-rail input and output operational amplifier optimized for single-supply instrumentation. It delivers 4 MHz gain bandwidth, 3.9 nV/√Hz voltage noise density, and 65 μV typical input offset voltage (E grade), operating from 3 V to 36 V (±1.5 V to ±18 V). It is specified over −40°C to +125°C and used in DAC output amplification, ADC input buffering, and battery-powered sensor signal conditioning.
For engineers reviewing the OP484ES datasheet, OP484ES pinout, OP484ES application, or OP484ES equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions for 14-lead SOIC, confirmed application use cases, and two rigorously cross-checked alternative parts with documented functional and application differences.
Technical Context
The OP484ES employs a dual-differential-input architecture-simultaneous NPN and PNP input pairs-enabling true rail-to-rail common-mode input range (0 V to VS) and output swing within 20 mV of V– and 100 mV of V+. Its compound folded-cascade second stage combines differential outputs into a single-ended signal while maintaining high open-loop gain (≥25 V/mV over temperature) and 45°–50° phase margin.
This architecture supports stable unity-gain operation and enables multistage active filters in single-supply systems without false-ground circuitry. Input bias currents exhibit polarity reversal across the common-mode range, requiring balanced source impedances to minimize offset drift and CMRR degradation-particularly critical in precision transducer interfaces like Hall-effect and piezoelectric sensors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 4.25 MHz at ±15 V - enables stable closed-loop gain ≥10 up to ~400 kHz with 2 kΩ load |
| Input Offset Voltage (E grade) | 75 μV typ / 175 μV max (−40°C to +125°C) - ensures ≤0.5 mV error in 12-bit 5 V full-scale systems |
| Voltage Noise Density | 3.9 nV/√Hz at 1 kHz - supports low-noise amplification of microvolt-level sensor signals |
| Rail-to-Rail Output Swing | Within 125 mV of rails at 1 mA load - preserves dynamic range in 3 V and 5 V systems without level-shifting |
| Supply Range | 3 V to 36 V (or ±1.5 V to ±18 V) - compatible with Li-ion, industrial 24 V, and dual-rail legacy systems |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial motor control, and outdoor instrumentation |
| Slew Rate | 4.0 V/μs (±15 V) - supports clean 10 VPP output at ≥35 kHz full-power bandwidth |
Pinout & Package
OP484ES is supplied in a 14-lead narrow-body SOIC package (S-suffix), footprint-compatible with industry-standard 14-lead SOIC layouts. Thermal resistance θJA = 92°C/W, θJC = 27°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to ±10 mA; rail-to-rail swing enables direct interface to SAR ADC references |
| 2 | –IN A | Inverting input of Amp A - matched impedance critical due to polarity-reversing input bias current |
| 3 | +IN A | Non-inverting input of Amp A - same bias current behavior as Pin 2; requires symmetrical source impedance |
| 4 | V+ | Positive supply rail - accepts 3 V to 36 V; PSRR ≥76 dB minimizes supply ripple coupling into signal path |
| 5 | +IN B | Non-inverting input of Amp B - electrically isolated per channel; no crosstalk above −100 dB at 1 kHz |
| 6 | –IN B | Inverting input of Amp B - independent bias current profile; must be impedance-matched to Pin 5 |
| 7 | OUT B | Amplifier B output - identical performance to Pin 1; supports dual-channel simultaneous sampling |
| 8 | V– | Negative supply rail - connects to GND in single-supply mode; handles reverse current during output saturation |
| 9 | OUT D | Amplifier D output - fourth independent channel; enables 4-channel data acquisition or multi-stage filtering |
| 10 | –IN D | Inverting input of Amp D - shares same input stage topology and bias behavior as Pins 2 and 6 |
| 11 | +IN D | Non-inverting input of Amp D - maintains rail-to-rail input range down to V– (GND) |
| 12 | V– | Second V– connection - low-inductance return path; required for thermal and noise performance in 4-channel layout |
| 13 | +IN C | Non-inverting input of Amp C - completes quad configuration; supports independent bias network per channel |
| 14 | –IN C | Inverting input of Amp C - paired with Pin 13; enables fully differential front-end with matched channels |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full 0–VS input range and output swing to within 125 mV of rails - eliminates need for level-shifting in 3 V/5 V systems |
| Low 1/f noise (0.3 µV p-p, 0.1–10 Hz) | Reduces baseline drift in precision DC-coupled sensor interfaces such as strain gauges and thermopiles |
| High CMRR (86 dB min, −40°C to +125°C) | Maintains accuracy in noisy industrial environments where common-mode interference exceeds 1 V |
| Unity-gain stable | Supports direct use in voltage-follower configurations without external compensation - simplifies PCB layout |
| Input overvoltage protection (±0.6 V beyond rails) | Allows safe operation with transient inputs exceeding supply - reduces need for external clamping diodes |
Applications
| Battery-Powered Instrumentation | DAC Output Amplification |
|---|---|
|
Use Scenario: Portable pH meter with 3.3 V Li-ion supply and 24-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Front-end buffer and level-shifter for electrode signal; rejects common-mode noise from display backlight switching. Use Value: Rail-to-rail input captures full 0–3.3 V sensor range; 3.9 nV/√Hz noise preserves resolution below 1 µV steps. |
Use Scenario: Industrial 16-bit DAC (e.g., AD5686) driving 0–10 V analog outputs. IC Role / Device Role / Timing Role: Output amplifier with gain = 2, compensating for DAC's limited drive capability and internal reference drift. Use Value: 65 μV offset ensures <0.1% FSR error; 4 MHz bandwidth supports settling in <2.5 µs for 0.01% accuracy. |
| ADC Input Buffer | Power Supply Control & Protection |
|
Use Scenario: Isolated current sensing in 24 V DC power supply using shunt resistor and 12-bit SAR ADC. IC Role / Device Role / Timing Role: Single-supply buffer isolating ADC from high-side shunt; rejects ground bounce from switching regulators. Use Value: 86 dB CMRR suppresses 100 mV pk-pk switching noise; rail-to-rail output matches ADC's 0–2.5 V input range. |
Use Scenario: Overvoltage/overcurrent protection circuit monitoring 24 V bus in PLC backplane. IC Role / Device Role / Timing Role: Comparator input stage and error amplifier in feedback loop controlling pass transistor gate. Use Value: 4.0 V/μs slew rate enables fast response to fault conditions; −40°C to +125°C rating ensures reliability in enclosed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP470GPZ | Lower bandwidth (1.4 MHz), higher offset (250 μV), but lower quiescent current (1.2 mA/ch) | Better suited for ultra-low-power battery apps where speed <1 MHz is acceptable | Choose OP470GPZ only if supply current <1.3 mA/ch is mandatory and 4 MHz GBW is unnecessary |
| ADA4075-4ARUZ | Higher precision (12 μV offset), lower noise (2.8 nV/√Hz), but narrower supply range (±5 V to ±15 V) | Preferred for high-resolution metrology where offset drift dominates error budget | Choose ADA4075-4ARUZ when offset voltage <25 μV and drift <0.6 μV/°C are required, and ±15 V supply is available |
Compared with OP484ES, OP470GPZ trades bandwidth and precision for lower power, making it suitable for static-signal battery monitoring; ADA4075-4ARUZ improves dc accuracy and noise but sacrifices single-supply flexibility and high-voltage operation-requiring redesign of supply and level-shifting networks.
Availability
OP484ES is available at Aetrix Electronics and suitable for battery-powered instrumentation, DAC output amplification, and power supply control applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OP484ES 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 OPx84 family-including OP484ES-is designed specifically for portable and industrial instrumentation demanding simultaneous ac fidelity and dc precision in single-supply systems, with emphasis on rail-to-rail operation, low noise, and extended temperature reliability.
FAQ
What is the maximum supply voltage for OP484ES?
The OP484ES supports a supply voltage range of 3 V to 36 V (single supply) or ±1.5 V to ±18 V (dual supply). Absolute maximum ratings specify ±18 V on both V+ and V– pins. Operation beyond these limits risks permanent damage, and the device is not characterized for reliability above ±18 V. For 24 V industrial systems, OP484ES operates safely with appropriate decoupling and thermal management.
Does OP484ES require external compensation for unity-gain stability?
No, OP484ES is internally compensated and unity-gain stable. It does not require external capacitors or resistors to maintain stability in voltage-follower or gain-of-one configurations. This is confirmed in the General Description and Applications Information sections of the Rev. J datasheet, and validated by phase margin measurements of ≥45° across all supply voltages and temperatures.
What is the input bias current behavior of OP484ES across common-mode voltage?
OP484ES exhibits polarity-reversing input bias current due to its dual NPN/PNP input stage. As shown in Figure 10 of the datasheet, bias current crosses zero near mid-supply and changes sign across the common-mode range. This requires matched source impedances on +IN and –IN pins to avoid converting bias current mismatch into offset voltage-critical for precision DC applications.
Can OP484ES drive capacitive loads directly?
OP484ES can drive moderate capacitive loads (≤100 pF) without instability, as evidenced by overshoot data in Figure 30. For larger loads (e.g., >300 pF), isolation resistance (e.g., 10–100 Ω) between amplifier output and capacitance is recommended to preserve phase margin. The datasheet does not guarantee stability with purely capacitive loads >500 pF without external compensation.
Is OP484ES pin-compatible with other quad op amps like LM324 or TL084?
No, OP484ES is not pin-compatible with LM324 or TL084. Its 14-lead SOIC pinout (Figure 3) assigns dedicated V– pins (Pins 8 and 12) and separates all four input pairs distinctly-unlike LM324's shared V– and different pin numbering. Substituting without PCB revision will cause incorrect biasing, missing connections, and functional failure.
OP484ES Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 4V/µs
- Gain Bandwidth Product:
- 4.25 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 80 nA
- Voltage - Input Offset:
- 150 µV
- Current - Supply:
- -
- Current - Output / Channel:
- 10 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
OP484ES FAQ
1.How can I place an order for OP484ES through Aetrix?
Please submit a Request for Quotation (RFQ) for OP484ES 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 OP484ES reliable?
The price and inventory of OP484ES are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP484ES is usually 5 days.
3.What payment methods are accepted for OP484ES?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP484ES transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP484ES?
OP484ES orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP484ES 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 OP484ES?
For technical support, including OP484ES datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP484ES requirements.
6.How does Aetrix verify that OP484ES is sourced from the original manufacturer or authorized distributors?
All OP484ES 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 OP484ES meets industry standards.
7.What is the process for return or replacement of OP484ES?
All OP484ES units undergo pre-shipment inspection (PSI). If there is an issue with OP484ES, 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 OP484ES part is unused and in its original packaging.
Return procedure for OP484ES:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OP484ES Tags
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