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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

Analog Devices Inc. OP484ESZ-REEL

Name: OP484ESZ-REEL
Brand: Analog Devices Inc.
SKU: OP484ESZ-REEL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: OP484ESZ-REEL

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: OP484ESZ-REEL.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

OP484ESZ-REEL 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 max offset voltage (E grade, 25°C), enabling high-fidelity signal conditioning in battery-powered and industrial sensor interfaces.

For engineers reviewing the OP484ESZ-REEL datasheet, OP484ESZ-REEL pinout, OP484ESZ-REEL application, or OP484ESZ-REEL equivalent, key selection criteria include rail-to-rail I/O swing at low supply voltages, guaranteed −40°C to +125°C operation, low 1.45 mA/amplifier quiescent current, and compatibility with multistage active filters requiring high CMRR and PSRR.

Technical Context

The OP484ESZ-REEL employs a dual-differential input stage (NPN + PNP pairs) enabling true rail-to-rail common-mode input range (0 V to V_S) across all supply conditions. 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).

Rail-to-rail output is achieved via an inverting, voltage-driven output stage with separate sourcing/sinking paths-Q5 sources current for negative inputs, Q6 sinks for positive inputs-delivering ±6.5 mA output drive and saturation margins of ≤125 mV from rails at 1 mA load.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	3 V to 36 V (or ±1.5 V to ±18 V): supports wide-input industrial and portable systems without level-shifting.
Gain Bandwidth Product	4.25 MHz (±15 V): enables stable unity-gain operation and 35 kHz full-power bandwidth for 29 V_p-p signals.
Input Offset Voltage	75 μV max (E grade, −40°C to +125°C): ensures <0.002% error in 3.3 V reference buffers and precision current-sense amplifiers.
Voltage Noise Density	3.9 nV/√Hz at 1 kHz: preserves SNR in low-level sensor front-ends (e.g., piezoelectric, Hall effect transducers).
Common-Mode Rejection	86 dB (−40°C to +125°C, V_CM = 1.0–4.0 V): maintains accuracy in noisy power-supply control loops and single-supply filter stages.
Slew Rate	4.0 V/μs (±15 V): supports fast settling (<4 μs to 0.01%) for 10 V step inputs in data-acquisition timing-critical paths.
Quiescent Current	1.45 mA per amplifier (−40°C to +125°C, 5 V): enables four-channel precision gain/level-shift with <6 mA total system bias.

Pinout & Package

OP484ESZ-REEL is supplied in a 14-lead narrow-body SOIC (S-Suffix) package with exposed pad for thermal enhancement. Pin 1 is marked by a beveled corner; pins are numbered counterclockwise.

Pin/Terminal	Circuit Role	Design Meaning
1	OUT A	Inverting-stage output node for Amplifier A; drives loads up to ±6.5 mA with rail-to-rail swing.
2	–IN A	Inverting input of Amplifier A; accepts common-mode voltages from V– to V+.
3	+IN A	Non-inverting input of Amplifier A; matched impedance path critical for bias-current cancellation.
4	V+	Positive supply rail connection; decoupling capacitor required within 1 cm for stability.
5	+IN B	Non-inverting input of Amplifier B; electrically isolated from other channels to maintain >120 dB channel separation at 1 kHz.
6	–IN B	Inverting input of Amplifier B; polarity and magnitude of input bias current vary with common-mode voltage (see Fig. 10).
7	OUT B	Output of Amplifier B; shares no internal nodes with OUT A, enabling independent feedback networks.
8	V–	Negative supply rail (GND in single-supply); serves as reference for all four amplifiers' output stages.
9	OUT D	Output of Amplifier D; layout symmetry with OUT A minimizes crosstalk in multi-channel filter banks.
10	–IN D	Inverting input of Amplifier D; pin-compatible routing with –IN A simplifies PCB design reuse.
11	+IN D	Non-inverting input of Amplifier D; balanced trace length to +IN A reduces EMI-induced common-mode errors.
12	V+	Redundant positive supply connection; must be tied to same net as Pin 4 for thermal and noise performance.
13	+IN C	Non-inverting input of Amplifier C; referenced to V–, enabling true single-supply operation down to 3 V.
14	–IN C	Inverting input of Amplifier C; input bias current reversal near rails requires matched source impedances for minimal offset drift.

Key Features

Feature	Design Value
Rail-to-rail input and output	Enables full dynamic range utilization in 3 V systems (e.g., 0–3 V DAC output amplification without clipping).
Guaranteed operation from −40°C to +125°C	Validates use in automotive engine-control modules and industrial motor-drive current-sense circuits without derating.
Low 3.9 nV/√Hz voltage noise	Preserves resolution in 24-bit delta-sigma ADC front-ends where noise floor dominates effective number of bits (ENOB).
Unity-gain stable	Eliminates need for external compensation in buffer, integrator, or active-filter configurations-reducing BOM count.
High PSRR (90 dB, ±2–18 V)	Rejects switching regulator ripple in mixed-signal PCBs, preventing 100 kHz–1 MHz noise coupling into analog signal chains.
Input overvoltage protection (±0.6 V beyond rails)	Allows safe interfacing with sensors exceeding supply rails by small margins (e.g., thermocouples, unregulated transducers).

Applications

Battery-Powered Instrumentation	DAC Output Amplifier
Use Scenario: Portable pH meter with 3.3 V Li-ion supply and 24-bit ADC sampling analog sensor output. IC Role / Device Role / Timing Role: Precision DC-coupled buffer and gain stage between ion-selective electrode and sigma-delta modulator. Use Value: Rail-to-rail input accepts 0–3.3 V electrode voltage; low 65 μV offset prevents calibration drift; 1.45 mA/quiescent current extends battery life.	Use Scenario: Industrial PLC analog output module generating 0–10 V control signals from 16-bit DAC. IC Role / Device Role / Timing Role: Output amplifier driving 600 Ω load with monotonicity and low glitch energy. Use Value: 4.0 V/μs slew rate settles 10 V steps in <4 μs; rail-to-rail output ensures full 0–10 V compliance; 86 dB CMRR rejects ground-loop noise.
ADC Input Buffer	Power Supply Control and Protection
Use Scenario: Isolated medical sensor node digitizing biopotential signals (ECG, EEG) with anti-alias filtering. IC Role / Device Role / Timing Role: Drives SAR ADC sample capacitor with low THD+N and high input impedance. Use Value: 3.9 nV/√Hz noise contributes <0.5 LSB error in 16-bit conversion; rail-to-rail input accommodates ±2.5 V signal swing.	Use Scenario: Telecom rectifier board monitoring +48 V bus voltage and triggering overvoltage shutdown. IC Role / Device Role / Timing Role: High-side current sense amplifier and comparator input buffer. Use Value: 36 V max supply allows direct connection to 48 V rail; 90 dB PSRR rejects switching noise; 125 mV output low enables clean logic-level interfacing.

Battery-Powered Instrumentation

DAC Output Amplifier

Use Scenario: Portable pH meter with 3.3 V Li-ion supply and 24-bit ADC sampling analog sensor output.

IC Role / Device Role / Timing Role: Precision DC-coupled buffer and gain stage between ion-selective electrode and sigma-delta modulator.

Use Value: Rail-to-rail input accepts 0–3.3 V electrode voltage; low 65 μV offset prevents calibration drift; 1.45 mA/quiescent current extends battery life.

Use Scenario: Industrial PLC analog output module generating 0–10 V control signals from 16-bit DAC.

IC Role / Device Role / Timing Role: Output amplifier driving 600 Ω load with monotonicity and low glitch energy.

Use Value: 4.0 V/μs slew rate settles 10 V steps in <4 μs; rail-to-rail output ensures full 0–10 V compliance; 86 dB CMRR rejects ground-loop noise.

ADC Input Buffer

Power Supply Control and Protection

Use Scenario: Isolated medical sensor node digitizing biopotential signals (ECG, EEG) with anti-alias filtering.

IC Role / Device Role / Timing Role: Drives SAR ADC sample capacitor with low THD+N and high input impedance.

Use Value: 3.9 nV/√Hz noise contributes <0.5 LSB error in 16-bit conversion; rail-to-rail input accommodates ±2.5 V signal swing.

Use Scenario: Telecom rectifier board monitoring +48 V bus voltage and triggering overvoltage shutdown.

IC Role / Device Role / Timing Role: High-side current sense amplifier and comparator input buffer.

Use Value: 36 V max supply allows direct connection to 48 V rail; 90 dB PSRR rejects switching noise; 125 mV output low enables clean logic-level interfacing.

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 supply current (425 μA/amplifier), lower GBW (8 MHz), higher offset (300 μV max), SOIC-14 package.	Better suited for ultra-low-power sensor nodes; less suitable for high-speed DAC buffering due to lower slew rate (5 V/μs) and reduced output drive.	Select AD8604ARUZ when battery life dominates performance requirements and signal bandwidth stays below 100 kHz.
OP497GSZ	Higher precision (25 μV max offset), lower noise (1.8 nV/√Hz), slower slew rate (0.15 V/μs), wider supply (±20 V), SOIC-14.	Optimized for dc-critical applications (e.g., strain-gauge bridges); unsuitable for AC-coupled or fast-settling tasks due to limited bandwidth (500 kHz).	Select OP497GSZ only when sub-50 μV offset and ultra-low 1/f noise outweigh speed and power requirements.

Compared with AD8604ARUZ and OP497GSZ, OP484ESZ-REEL uniquely balances 4 MHz bandwidth, rail-to-rail I/O, 65 μV offset, and 1.45 mA quiescent current-making it the optimal choice for cost-sensitive, multi-channel instrumentation where both precision and speed matter.

Availability

OP484ESZ-REEL 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 product lifecycles.

Supply support for OP484ESZ-REEL 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 OP484ESZ-REEL-is designed for portable and single-supply instrumentation, delivering precision dc performance alongside ac capabilities like 4 MHz bandwidth and low noise for sensor signal chains and data-converter interfaces.

FAQ

What supply voltage range does the OP484ESZ-REEL support?

The OP484ESZ-REEL operates from 3 V to 36 V (single-supply) or ±1.5 V to ±18 V (dual-supply), validated across the full −40°C to +125°C temperature range. This allows direct integration into 3.3 V microcontroller systems, 24 V industrial controls, and legacy ±15 V test equipment without external level-shifting circuitry. The device maintains rail-to-rail input/output swing across this entire range.

Is the OP484ESZ-REEL unity-gain stable?

Yes, the OP484ESZ-REEL is explicitly specified as unity-gain stable in its datasheet (Rev. J, Page 1). It achieves stable operation with closed-loop gains ≥1 without requiring external compensation components-enabling straightforward use as a voltage follower, active filter stage, or DAC output buffer without risk of oscillation.

What is the maximum output current capability of the OP484ESZ-REEL?

The OP484ESZ-REEL delivers ±6.5 mA output current per amplifier under standard conditions (V_S = 5 V, T_A = 25°C), with output voltage swing maintained within 125 mV of each rail at 1 mA load. At ±15 V supplies, short-circuit current is typically ±20 mA, and output drive remains linear up to ±10 mA with <0.1% THD+N at 1 kHz.

How does the OP484ESZ-REEL handle input overvoltage conditions?

The OP484ESZ-REEL features diode-based input overvoltage protection that conducts when inputs exceed V+ by +1.8 V or fall below V– by −0.6 V. To prevent damage, external series resistors must limit fault current to ≤5 mA. For example, a 1 kΩ resistor protects against ±5 V transients on a 3 V supply-details are provided in Figure 47 of the OP484 datasheet Rev. J.

Does the OP484ESZ-REEL exhibit input bias current reversal, and how should it be managed?

Yes-the OP484ESZ-REEL's dual-differential input stage causes input bias current polarity to reverse near supply rails (see Figure 10). This results in asymmetric bias currents at +IN and –IN terminals. To minimize offset voltage drift and common-mode error, source impedances at both inputs must be closely matched-ideally within 1%-especially in precision DC applications like bridge amplifiers.

OP484ESZ-REEL 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:: 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

OP484ESZ-REEL FAQ

1.How can I place an order for OP484ESZ-REEL through Aetrix?

Please submit a Request for Quotation (RFQ) for OP484ESZ-REEL 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 OP484ESZ-REEL reliable?

The price and inventory of OP484ESZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP484ESZ-REEL is usually 5 days.

3.What payment methods are accepted for OP484ESZ-REEL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP484ESZ-REEL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for OP484ESZ-REEL?

OP484ESZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your OP484ESZ-REEL 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 OP484ESZ-REEL?

For technical support, including OP484ESZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP484ESZ-REEL requirements.

6.How does Aetrix verify that OP484ESZ-REEL is sourced from the original manufacturer or authorized distributors?

All OP484ESZ-REEL 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 OP484ESZ-REEL meets industry standards.

7.What is the process for return or replacement of OP484ESZ-REEL?

All OP484ESZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with OP484ESZ-REEL, 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 OP484ESZ-REEL part is unused and in its original packaging.

Return procedure for OP484ESZ-REEL:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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