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Analog Devices Inc. OP484FSZ-REEL7
- Part No.:
- OP484FSZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OP484FSZ-REEL7.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,955
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Product details
Overview
OP484FSZ-REEL7 from Analog Devices is a quad precision rail-to-rail input and output operational amplifier optimized for single-supply instrumentation, DAC output buffering, and ADC input conditioning. 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 at 25°C - enabling high-fidelity signal conditioning in battery-powered and industrial sensor interfaces.
For engineers reviewing the OP484FSZ-REEL7 datasheet, OP484FSZ-REEL7 pinout, OP484FSZ-REEL7 application, or OP484FSZ-REEL7 equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation guidance, and two confirmed alternative parts with documented functional and application differences.
Technical Context
The OP484FSZ-REEL7 implements a dual-differential-input stage (NPN + PNP pairs) enabling true rail-to-rail common-mode input range (0 V to VS) and rail-to-rail output swing (within 20 mV of V–, 100 mV of V+). Its compound folded-cascade second stage delivers high open-loop gain (>240 V/mV) and stable unity-gain operation without external compensation.
Designed for hot extended industrial environments (−40°C to +125°C), it features low bias current drift (150 pA/°C), 76–90 dB PSRR across supply ranges, and robust capacitive load drive capability (stable with ≥300 pF). Input overvoltage protection relies on internal diode clamping - requiring external series resistors if inputs exceed rails by >0.6 V (negative) or >1.8 V (positive).
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 interface with Li-ion, 5 V, 12 V, and 24 V systems without level-shifting. |
| Gain Bandwidth Product | 4.25 MHz (typ @ ±15 V): enables stable closed-loop operation up to ~400 kHz at G = 10, suitable for anti-aliasing and reconstruction filters. |
| Input Offset Voltage | 75 μV (max @ −40°C to +125°C, E grade): ensures ≤0.75 mV error in 10 V full-scale 12-bit systems without trimming. |
| Slew Rate | 4.0 V/μs (typ @ ±15 V): supports 10 VPP signals up to ~64 kHz without slew-induced distortion. |
| Voltage Noise Density | 3.9 nV/√Hz @ 1 kHz: contributes <1.2 μVRMS integrated noise in 10 kHz bandwidth, critical for low-level sensor amplification. |
| Output Drive | ±10 mA (min @ ±15 V): drives 1 kΩ loads while maintaining rail-to-rail swing and <0.1% THD+N at 1 kHz. |
| Operating Temperature | −40°C to +125°C: qualified for under-hood automotive, industrial motor control, and downhole sensing applications. |
Pinout & Package
OP484FSZ-REEL7 is supplied in a 14-lead narrow-body SOIC (S-Suffix) package, RoHS-compliant and tape-and-reel packaged as REEL7. Pin 1 is marked with a dot; pins 5 and 10 are no-connect (NC) terminals per datasheet Figure 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output: capable of sourcing/sinking ±10 mA while swinging within 20 mV of V– and 100 mV of V+. |
| 2 | –IN A | Inverting input of Amp A: high-impedance node (60–600 nA bias current); requires matched source impedance to +IN A for CMRR optimization. |
| 3 | +IN A | Non-inverting input of Amp A: same bias current behavior as –IN A; rail-to-rail common-mode range (0 V to VS). |
| 4 | V+ | Positive supply rail: accepts 3–36 V (single) or +1.5 to +18 V (dual supply); decoupling capacitor required near pin. |
| 5 | NC | No connect: internally unconnected; must remain floating - no routing or grounding permitted. |
| 6 | +IN B | Non-inverting input of Amp B: electrically identical to +IN A; shares same input stage architecture and bias characteristics. |
| 7 | –IN B | Inverting input of Amp B: matches –IN A performance; channel separation >120 dB @ 1 kHz ensures minimal crosstalk in multi-channel designs. |
| 8 | OUT B | Amplifier B output: independent output stage; fully specified for simultaneous operation with other channels. |
| 9 | OUT D | Amplifier D output: identical drive capability and noise performance as OUT A/B/C; supports four independent signal paths. |
| 10 | NC | No connect: internally unconnected; must remain floating - no routing or grounding permitted. |
| 11 | –IN D | Inverting input of Amp D: maintains rail-to-rail input operation and low offset across temperature. |
| 12 | +IN D | Non-inverting input of Amp D: balanced bias current profile enables precision differential configurations. |
| 13 | V– | Negative supply rail: accepts 0 V (single-supply ground) or −1.5 to −18 V (dual supply); return path for all quiescent and output currents. |
| 14 | OUT C | Amplifier C output: fully characterized for 125°C operation; supports simultaneous use with all other outputs without thermal derating. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of single-supply voltage range (e.g., 0–5 V) without headroom loss - critical for 3 V microcontroller ADC interfaces. |
| Low 3.9 nV/√Hz voltage noise | Preserves SNR in front-end amplification of thermocouples, strain gauges, and piezoelectric sensors with sub-mV outputs. |
| 4 MHz bandwidth with unity-gain stability | Eliminates need for external compensation components in gain-of-1 buffer, I/V converter, or active filter designs. |
| Specified for −40°C to +125°C | Validated performance across automotive under-hood, industrial PLC, and energy metering environments without derating. |
| Quad configuration in 14-lead SOIC | Reduces board space vs. discrete singles/duals; enables matched-channel applications like 4-wire RTD measurement or multi-axis sensor conditioning. |
Applications
| Battery-Powered Instrumentation | DAC Output Amplifier |
|---|---|
|
Use Scenario: Portable pH meter using 3.3 V MCU, 16-bit DAC, and glass electrode with high-impedance output. IC Role / Device Role / Timing Role: Buffer and level-shift DAC output to drive electrode while rejecting common-mode noise from switching power supply. Use Value: Rail-to-rail input accepts 0–3.3 V DAC code; rail-to-rail output delivers full 0–3.3 V to electrode; 65 μV offset avoids calibration drift in field use. |
Use Scenario: Precision 12-bit DAC in industrial actuator controller requiring 0–10 V analog output with <0.1% FSR accuracy. IC Role / Device Role / Timing Role: Unity-gain output buffer isolating DAC from cable capacitance and load variations. Use Value: 4.0 V/μs slew rate settles 10 V step in <4 µs; ±10 mA drive handles 1 kΩ load; 75 μV max offset ensures <0.075% FSR error at 10 V. |
| ADC Input Buffer | Power Supply Control & Protection |
|
Use Scenario: 16-bit SAR ADC sampling thermistor network in HVAC control panel operating from 5 V rail. IC Role / Device Role / Timing Role: Low-noise, low-offset follower driving ADC sample capacitor with minimal settling error. Use Value: 3.9 nV/√Hz noise adds <0.4 LSB RMS noise in 100 kHz BW; 1.45 mA supply current minimizes self-heating in sealed enclosure. |
Use Scenario: Overvoltage/overcurrent protection circuit monitoring 24 V DC bus in factory automation system. IC Role / Device Role / Timing Role: Comparator input stage and error amplifier in feedback loop of linear regulator or shunt controller. Use Value: Wide 3–36 V supply range allows direct bus connection; 86 dB CMRR rejects ripple on noisy 24 V rail; 125°C rating survives enclosure heat buildup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8604ARUZ | Lower bandwidth (8 MHz), higher noise (12 nV/√Hz), lower supply current (1.2 mA), same 14-lead TSSOP package. | Better suited for low-power, moderate-speed applications (e.g., sensor signal chain front-end); not recommended for >100 kHz filtering. | Select AD8604ARUZ when ultra-low quiescent current is prioritized over noise and bandwidth - e.g., coin-cell IoT nodes. |
| OP497GPZ | Higher precision (25 μV max offset), lower bandwidth (500 kHz), higher supply current (1.6 mA), same 14-lead SOIC package. | Optimized for dc-critical applications (e.g., precision reference buffers, weigh scale front-ends); insufficient bandwidth for audio or fast DAC buffering. | Select OP497GPZ only when sub-50 μV offset is mandatory and bandwidth <500 kHz suffices - avoid for dynamic signal paths. |
Compared with OP484FSZ-REEL7, AD8604ARUZ trades noise and speed for lower power, while OP497GPZ sacrifices bandwidth and increases current draw to achieve superior dc accuracy - making OP484FSZ-REEL7 the balanced choice for mixed-signal applications demanding simultaneous precision, speed, and rail-to-rail operation.
Availability
OP484FSZ-REEL7 is available at Aetrix Electronics and suitable for battery-powered instrumentation, DAC output amplification, and ADC input buffering requiring stable component supply across automotive, industrial, and medical device production cycles.
Supply support for OP484FSZ-REEL7 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 OP484FSZ-REEL7 belongs to the OPx84 family - engineered specifically for portable instrumentation and single-supply precision signal conditioning where rail-to-rail operation, low noise, and wide bandwidth must coexist without compromise.
FAQ
What is the maximum operating temperature for OP484FSZ-REEL7?
The OP484FSZ-REEL7 is fully specified and guaranteed over the extended industrial temperature range of −40°C to +125°C. This rating applies to all electrical parameters in Tables 2–4 of the Rev. J datasheet, including offset voltage, CMRR, and output drive capability - making OP484FSZ-REEL7 suitable for under-hood automotive and industrial control applications where ambient temperatures exceed 105°C.
Does OP484FSZ-REEL7 require external compensation for unity-gain stability?
No, OP484FSZ-REEL7 is internally compensated and unity-gain stable across its full supply range (3 V to 36 V). The datasheet explicitly states "Unity-gain stable" in the FEATURES section and confirms stable phase margin (≥45°) in Table 2 and Figure 16–18. No external capacitors or resistors are needed for G = 1 configurations - simplifying PCB layout and reducing BOM count.
What is the purpose of the NC pins (5 and 10) on OP484FSZ-REEL7?
Pins 5 and 10 on OP484FSZ-REEL7 are designated as "NC" (No Connect) per Analog Devices' official pinout diagram (Figure 3, Rev. J). These pins are not bonded internally and must remain electrically floating - they should not be tied to V+, V–, ground, or any other net. Routing traces to or placing vias on these pads may cause assembly defects or unintended coupling; best practice is to omit copper entirely at those locations.
Can OP484FSZ-REEL7 drive capacitive loads without oscillation?
Yes, OP484FSZ-REEL7 can safely drive ≥300 pF capacitive loads in unity-gain configuration, as verified by small-signal transient response plots (Figures 39–40) and overshoot characterization (Figure 30). For loads >500 pF, consider adding a small series resistor (10–50 Ω) between the output and capacitor to isolate the reactive load from the amplifier's output stage - preserving stability without degrading bandwidth significantly.
How does the input bias current behavior affect PCB layout for OP484FSZ-REEL7?
OP484FSZ-REEL7 exhibits asymmetric input bias currents that change polarity across the common-mode range (per Figure 10 and Functional Description). To maintain optimal CMRR and minimize offset error, the Thévenin-equivalent source impedances seen by +IN and –IN pins of each amplifier must be matched within 1% - achieved by using equal-value resistors in inverting/non-inverting gain networks and avoiding long, unmatched trace lengths to either input.
OP484FSZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
OP484FSZ-REEL7 FAQ
1.How can I place an order for OP484FSZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for OP484FSZ-REEL7 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 OP484FSZ-REEL7 reliable?
The price and inventory of OP484FSZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP484FSZ-REEL7 is usually 5 days.
3.What payment methods are accepted for OP484FSZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP484FSZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP484FSZ-REEL7?
OP484FSZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP484FSZ-REEL7 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 OP484FSZ-REEL7?
For technical support, including OP484FSZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP484FSZ-REEL7 requirements.
6.How does Aetrix verify that OP484FSZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All OP484FSZ-REEL7 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 OP484FSZ-REEL7 meets industry standards.
7.What is the process for return or replacement of OP484FSZ-REEL7?
All OP484FSZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with OP484FSZ-REEL7, 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 OP484FSZ-REEL7 part is unused and in its original packaging.
Return procedure for OP484FSZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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