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Analog Devices Inc. OP484FP
- Part No.:
- OP484FP
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
OP484FP.pdf
- Description:
- IC OPAMP GP R-R 4.25MHZ LN 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:608
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Product details
Overview
OP484FP from Analog Devices is a quad precision rail-to-rail input and output operational amplifier optimized for single-supply instrumentation systems. It operates from 3 V to 36 V (±1.5 V to ±18 V), delivers 4 MHz gain bandwidth, 3.9 nV/√Hz voltage noise, and 65 μV typical input offset voltage (E grade), enabling high-fidelity signal conditioning in battery-powered data acquisition and sensor interfaces.
For engineers reviewing the OP484FP datasheet, OP484FP pinout, OP484FP application, or OP484FP equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions for 14-lead SOIC, application-specific implementation guidance, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The OP484FP uses a dual-differential input stage (NPN + PNP pairs) to achieve true rail-to-rail common-mode input range (0 V to VS) across its full supply range. Its compound folded-cascade second stage combines differential outputs into a single-ended signal before driving a unique inverting-output stage that sources and sinks current to within 20 mV of V– and 100 mV of V+.
This architecture enables stable unity-gain operation, 4.0 V/μs slew rate (±15 V), and low distortion (<0.001% THD+N at 1 kHz) while maintaining 86 dB CMRR over –40°C to +125°C. Input bias currents exhibit polarity reversal across the common-mode range, requiring balanced source impedances for optimal dc accuracy and ac performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 36 V (or ±1.5 V to ±18 V): supports direct integration into 3.3 V, 5 V, and industrial 24 V systems without level-shifting. |
| Gain Bandwidth Product | 4.25 MHz (±15 V): enables stable closed-loop operation up to ~400 kHz at gain = 10, suitable for anti-aliasing and reconstruction filters. |
| Input Offset Voltage (E Grade) | 75 μV typ (–40°C to +125°C): ensures ≤0.75 mV total error in 10-bit ADC front-ends with 3.3 V full-scale range. |
| Voltage Noise Density | 3.9 nV/√Hz @ 1 kHz: contributes <1.2 μVRMS integrated noise in 100 kHz bandwidth, critical for low-level transducer amplification. |
| Slew Rate | 4.0 V/μs (±15 V): supports 10 VPP signals up to ~640 kHz without slewing distortion in unity-gain buffer configurations. |
| Output Swing | Rail-to-rail: delivers >99% of VS swing (e.g., 0.02 V to 4.98 V on 5 V supply), maximizing dynamic range in single-supply data converters. |
| Operating Temperature | –40°C to +125°C: qualified for under-hood automotive, industrial motor control, and outdoor telecom equipment. |
Pinout & Package
OP484FP is supplied in a 14-lead narrow-body SOIC package (S-suffix), footprint-compatible with industry-standard 14-SOIC layouts and reflow soldering profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output: drives external load; capable of sourcing/sinking ±6.5 mA (5 V) or ±10 mA (±15 V). |
| 2 | –IN A | Inverting input of Amp A: high-impedance node; requires matched source impedance to +IN A for bias current cancellation. |
| 3 | +IN A | Non-inverting input of Amp A: rail-to-rail common-mode range (0 V to VS); connects to sensor or reference. |
| 4 | V+ | Positive supply rail: accepts 3 V to 36 V or +1.5 V to +18 V; decoupling capacitor required near pin. |
| 5 | +IN B | Non-inverting input of Amp B: electrically identical to +IN A; shares same layout rules and bias considerations. |
| 6 | –IN B | Inverting input of Amp B: matches –IN A characteristics; must be impedance-balanced with +IN B. |
| 7 | OUT B | Amplifier B output: independent channel; no crosstalk with A/C/D channels above –140 dB at 1 kHz. |
| 8 | V– | Negative supply rail: connects to GND (single-supply) or –1.5 V to –18 V; return path for all four amplifiers. |
| 9 | OUT D | Amplifier D output: fourth independent output; usable as active filter stage or reference buffer. |
| 10 | –IN D | Inverting input of Amp D: full rail-to-rail operation; compatible with DAC output swing from 0 V to VS. |
| 11 | +IN D | Non-inverting input of Amp D: supports precision voltage follower configuration for ADC reference buffering. |
| 12 | V+ | Positive supply rail (redundant connection): ties to Pin 4; improves PSRR and reduces supply-induced crosstalk. |
| 13 | +IN C | Non-inverting input of Amp C: enables multistage signal chain (e.g., gain + filtering + buffering) on one IC. |
| 14 | –IN C | Inverting input of Amp C: used in difference amplifier or I/V conversion topologies with matched resistors. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 3 V–36 V supply rails in single-supply systems, eliminating need for virtual ground or level-shifting circuitry. |
| Low 3.9 nV/√Hz voltage noise | Preserves SNR in low-amplitude sensor interfaces (e.g., thermocouples, strain gauges) without requiring additional noise-filtering stages. |
| 4 MHz bandwidth with unity-gain stability | Supports wideband active filtering (e.g., 2nd-order Butterworth cutoff at 500 kHz) without external compensation components. |
| Specified over –40°C to +125°C | Guarantees parametric performance in harsh environments, including automotive engine control units and industrial PLC modules. |
| Quad-channel integration | Reduces PCB area and component count in multi-signal systems (e.g., 4-channel data loggers), lowering BOM cost and assembly complexity. |
Applications
| Battery-Powered Instrumentation | DAC Output Amplifier |
|---|---|
|
Use Scenario: Portable pH meter acquiring analog sensor output with 16-bit resolution using a 3.3 V supply. IC Role / Device Role / Timing Role: Precision buffer and level-shifter between pH electrode and SAR ADC, rejecting common-mode noise from switching power supply. Use Value: Rail-to-rail input accepts 0–3.3 V electrode signal; low 65 μV offset prevents zero-point calibration drift over temperature. |
Use Scenario: Driving 12-bit DAC output to actuator control voltage in a 5 V microcontroller-based motion controller. IC Role / Device Role / Timing Role: Unity-gain output amplifier isolating DAC from capacitive load, maintaining monotonicity and settling within 2.5 μs. Use Value: 4.0 V/μs slew rate and 4 MHz GBW ensure full-scale step settles to 0.01% in <3 μs, meeting real-time control loop timing. |
| Power Supply Control and Protection | ADC Input Buffer |
|
Use Scenario: Overvoltage protection circuit monitoring 24 V DC bus in industrial automation cabinet. IC Role / Device Role / Timing Role: Comparator input stage (with external reference) and fast-response error amplifier in feedback loop of linear regulator. Use Value: Wide 3–36 V supply range allows direct connection to monitored rail; 86 dB CMRR rejects ripple noise during transient events. |
Use Scenario: Anti-aliasing filter and driver for 1 MSPS 14-bit ADC sampling thermistor network in HVAC controller. IC Role / Device Role / Timing Role: 2nd-order Sallen-Key filter + unity-gain buffer, providing 500 kHz cutoff and low-impedance drive to ADC sample capacitor. Use Value: Low 1.45 mA/amplifier quiescent current extends battery life; 3.9 nV/√Hz noise avoids degrading effective resolution below 13.5 bits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP470GP | Lower bandwidth (1.9 MHz), higher offset (150 μV typ), wider SOIC-14 package (0.300" body width vs. OP484FP's 0.150"). | Less suitable for >200 kHz closed-loop designs; higher drift limits use in high-temperature sensor front-ends. | Select OP470GP only when legacy board space accommodates wider SOIC and bandwidth requirements are ≤150 kHz. |
| ADA4075-4 | Lower noise (2.8 nV/√Hz), lower supply current (1.2 mA/amplifier), but narrower supply range (±2.5 V to ±15 V, no 3 V single-supply support). | Cannot operate from 3 V or 24 V rails; requires dual supplies, limiting use in portable or industrial single-rail systems. | Choose ADA4075-4 only when dual ±5 V/±12 V supplies exist and sub-3 nV/√Hz noise is mandatory for ultra-low-level signals. |
Compared with OP470GP and ADA4075-4, OP484FP uniquely balances 4 MHz bandwidth, rail-to-rail operation down to 3 V, and 3.9 nV/√Hz noise-making it the only option supporting precision 12+ bit data acquisition across battery, USB, and industrial 24 V platforms without supply or layout redesign.
Availability
OP484FP is available at Aetrix Electronics and suitable for battery-powered instrumentation, power supply control and protection, and DAC output amplification requiring stable component supply across automotive, industrial, and medical device production cycles.
Supply support for OP484FP 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 OP484FP-is engineered for portable instrumentation and single-supply precision signal chains, emphasizing rail-to-rail operation, low noise, and extended temperature reliability without sacrificing bandwidth or dc accuracy.
FAQ
What supply voltage range does the OP484FP support?
The OP484FP supports a supply voltage range of 3 V to 36 V (single-supply) or ±1.5 V to ±18 V (dual-supply), as specified in the Absolute Maximum Ratings table and confirmed across all electrical characteristics test conditions in the datasheet Rev. J. This allows direct use in 3.3 V microcontroller systems, 5 V data loggers, and 24 V industrial controllers without external regulators or level shifters. The OP484FP maintains full rail-to-rail input/output functionality across this entire range.
Is the OP484FP pin-compatible with other quad op amps like the LM324?
No, the OP484FP is not pin-compatible with the LM324. The OP484FP uses a 14-lead narrow-body SOIC package with dedicated V+ (Pins 4 & 12) and V– (Pin 8) connections, plus independent inputs/outputs per amplifier. In contrast, the LM324 uses a 14-pin DIP/SOIC with shared V+ (Pin 4) and V– (Pin 11). Swapping them requires PCB layout changes, and the OP484FP's rail-to-rail input stage and higher bandwidth also demand updated stability analysis.
What is the typical input offset voltage for OP484FP at room temperature?
The typical input offset voltage for OP484FP (E grade) is 75 μV at 25°C with VS = 5 V, as stated in Table 2 of the datasheet Rev. J. Over the full operating temperature range (–40°C to +125°C), the maximum offset is 175 μV. This value is measured approximately 0.5 seconds after power application using automated test equipment, and applies specifically to the OP484FP variant-not the F grade (150 μV typ).
Does OP484FP require external compensation for unity-gain stability?
No, the OP484FP is unity-gain stable without external compensation. The datasheet explicitly lists "Unity-gain stable" under FEATURES and confirms stable operation in unity-gain buffer configurations across all supply voltages (3 V, 5 V, ±15 V) in Typical Performance Characteristics (Figures 16–18 open-loop gain/phase plots). Its phase margin exceeds 45° at unity gain, eliminating need for compensation capacitors in standard gain ≥1 configurations.
How does the OP484FP handle input overvoltage conditions?
The OP484FP has no internal series input resistors, so input overvoltage beyond ±0.6 V relative to either supply rail causes rapid current rise. Per Figure 46 and Applications Information, fault current exceeds 5 mA beyond this threshold and can damage the device. Designers must add external series resistors (e.g., 1 kΩ per input) to limit current to ≤5 mA-especially in non-inverting configurations where input pins connect directly to external signals outside the supply rails.
OP484FP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- 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:
- 250 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:
- Through Hole
- Supplier Device Package:
- 14-PDIP
OP484FP FAQ
1.How can I place an order for OP484FP through Aetrix?
Please submit a Request for Quotation (RFQ) for OP484FP 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 OP484FP reliable?
The price and inventory of OP484FP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP484FP is usually 5 days.
3.What payment methods are accepted for OP484FP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP484FP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP484FP?
OP484FP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP484FP 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 OP484FP?
For technical support, including OP484FP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP484FP requirements.
6.How does Aetrix verify that OP484FP is sourced from the original manufacturer or authorized distributors?
All OP484FP 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 OP484FP meets industry standards.
7.What is the process for return or replacement of OP484FP?
All OP484FP units undergo pre-shipment inspection (PSI). If there is an issue with OP484FP, 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 OP484FP part is unused and in its original packaging.
Return procedure for OP484FP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OP484FP Tags
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LM358DR
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LM2904DR
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LM358ADR
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LM2904DGKR
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LM324DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
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LM324PWR
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LM2902DR
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LM358P
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