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

Analog Devices Inc. OP284ES-REEL7

Name: OP284ES-REEL7
Brand: Analog Devices Inc.
SKU: OP284ES-REEL7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: OP284ES-REEL7

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: OP284ES-REEL7.pdf

Description:: IC OPAMP GP 2 CIRCUIT 8SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

OP284ES-REEL7 from Analog Devices is a dual-channel, precision rail-to-rail input and output operational amplifier optimized for single-supply operation from 3 V to 36 V (±1.5 V to ±18 V). It delivers 4 MHz gain bandwidth, 3.9 nV/√Hz voltage noise density, and 65 μV typical input offset voltage at 25°C - enabling high-fidelity signal conditioning in battery-powered instrumentation and DAC output buffering.

For engineers reviewing the OP284ES-REEL7 datasheet, OP284ES-REEL7 pinout, OP284ES-REEL7 application, or OP284ES-REEL7 equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, and two confirmed alternative parts for precision analog signal chains requiring rail-to-rail swing, low noise, and extended temperature operation (−40°C to +125°C).

Technical Context

The OP284ES-REEL7 implements a composite input stage with concurrent NPN and PNP differential pairs to achieve true rail-to-rail common-mode input range (0 V to V_S) and output swing within 20 mV of V_– and 100 mV of V₊. Its second-stage compound folded cascade architecture enables unity-gain stability and 4.0 V/μs slew rate under ±15 V supply.

Input bias currents exhibit polarity reversal across the common-mode range due to summed base currents of complementary transistor pairs - requiring balanced source impedances for optimal DC accuracy and CMRR. Output short-circuit current is internally limited to ~20 mA, with thermal shutdown protection active over −40°C to +125°C.

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 (typ. at ±15 V) - enables stable closed-loop gain ≥10 up to 400 kHz for anti-aliasing or reconstruction filters.
Input Offset Voltage	65 μV (typ., E grade, 25°C) - ensures ≤0.13% error in 50 mV full-scale sensor interfaces without trimming.
Voltage Noise Density	3.9 nV/√Hz (1 kHz) - preserves SNR >90 dB in 20 kHz audio paths and low-level transducer amplification.
Slew Rate	4.0 V/μs (typ., ±15 V) - supports 10 V_PP signals up to 64 kHz without distortion in unity-gain buffer configurations.
Common-Mode Rejection Ratio	86 dB (min., −40°C to +125°C, V_CM = 1.0 V to 4.0 V) - maintains accuracy in noisy industrial environments with ground offsets.
Operating Temperature Range	−40°C to +125°C - qualified for under-hood automotive sensors, motor control feedback, and industrial PLC I/O modules.

Pinout & Package

OP284ES-REEL7 is housed in an 8-lead SOIC (S-suffix) surface-mount package with exposed pad for thermal enhancement. Pin 1 is marked by a dot or beveled edge; the package is RoHS-compliant and moisture-sensitive level 3.

Pin/Terminal	Circuit Role	Design Meaning
1	OUT A	Amplifier A output - drives loads up to ±6.5 mA while maintaining rail-to-rail swing (within 125 mV of rails at 1 mA).
2	−IN A	Inverting input of Amplifier A - accepts common-mode voltages from V_– to V₊; requires matched source impedance to +IN A for minimal offset drift.
3	+IN A	Non-inverting input of Amplifier A - same rail-to-rail CM range as −IN A; imbalance >1 kΩ causes >1 μV/°C offset drift.
4	V_–	Negative supply terminal - connects to GND (single-supply) or negative rail (dual-supply); must be low-impedance for PSRR >76 dB.
5	V₊	Positive supply terminal - supplies both amplifiers; decoupling capacitor (0.1 μF ceramic) required within 5 mm for stability.
6	+IN B	Non-inverting input of Amplifier B - electrically identical to +IN A; independent channel allows dual-path signal conditioning.
7	−IN B	Inverting input of Amplifier B - shares no internal nodes with Amplifier A; channel separation >120 dB at 1 kHz.
8	OUT B	Amplifier B output - fully independent output stage; capable of driving capacitive loads up to 300 pF without peaking.

Key Features

Feature	Design Value
Rail-to-rail input and output	Enables full dynamic range utilization in 3 V microcontroller ADC interfaces and 5 V DAC buffers without external level-shifting circuitry.
Low 3.9 nV/√Hz voltage noise	Supports 16-bit+ resolution in strain gauge and thermopile amplifiers where 1 LSB ≈ 150 nV at 10 V full scale.
65 μV max offset (E grade)	Reduces calibration burden in portable medical devices - eliminates need for auto-zero or chopper stabilization in many applications.
Unity-gain stable	Permits direct use as voltage follower in high-impedance sensor interfaces without external compensation components.
−40°C to +125°C operation	Qualifies for engine control units, solar inverter current sensing, and industrial motor drive feedback loops without derating.

Applications

Battery-Powered Instrumentation	DAC Output Amplifier
Use Scenario: Portable multimeter front-end amplifying mV-level thermocouple or RTD signals with 3.3 V MCU supply. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with rail-to-rail input enabling zero-volt referenced measurements and rail-to-rail output driving 12-bit SAR ADC. Use Value: 65 μV offset and 3.9 nV/√Hz noise preserve <100 ppm measurement accuracy over 0–100°C without trimming or filtering.	Use Scenario: Buffering 12-bit voltage-output DAC (e.g., AD5621) in programmable power supply setpoint generation. IC Role / Device Role / Timing Role: Low-offset, low-noise unity-gain buffer isolating DAC from load variations and ensuring monotonicity. Use Value: Rail-to-rail output swing delivers full 0–5 V DAC range to reference input of error amplifier; 4 MHz GBW prevents settling delay in closed-loop response.
Power Supply Control and Protection	ADC Input Buffer
Use Scenario: Current-sense amplifier in 24 V industrial SMPS monitoring output current via shunt resistor. IC Role / Device Role / Timing Role: High-CMRR (86 dB min) differential amplifier converting shunt voltage to ground-referenced signal for controller. Use Value: 36 V max supply rating allows direct connection to 24 V rail; rail-to-rail output ensures full-scale use of 3.3 V ADC input range.	Use Scenario: Driving SAR ADC (e.g., AD7980) input in data acquisition system sampling 0–10 V industrial sensors. IC Role / Device Role / Timing Role: Low-output-impedance buffer providing fast settling (<2.5 µs to 0.01%) and charge injection immunity. Use Value: 4.0 V/μs slew rate and 4 MHz GBW ensure <0.5 LSB error during 1 MSPS sampling; rail-to-rail input accommodates bipolar sensor outputs.

Battery-Powered Instrumentation

DAC Output Amplifier

Use Scenario: Portable multimeter front-end amplifying mV-level thermocouple or RTD signals with 3.3 V MCU supply.

IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with rail-to-rail input enabling zero-volt referenced measurements and rail-to-rail output driving 12-bit SAR ADC.

Use Value: 65 μV offset and 3.9 nV/√Hz noise preserve <100 ppm measurement accuracy over 0–100°C without trimming or filtering.

Use Scenario: Buffering 12-bit voltage-output DAC (e.g., AD5621) in programmable power supply setpoint generation.

IC Role / Device Role / Timing Role: Low-offset, low-noise unity-gain buffer isolating DAC from load variations and ensuring monotonicity.

Use Value: Rail-to-rail output swing delivers full 0–5 V DAC range to reference input of error amplifier; 4 MHz GBW prevents settling delay in closed-loop response.

Power Supply Control and Protection

ADC Input Buffer

Use Scenario: Current-sense amplifier in 24 V industrial SMPS monitoring output current via shunt resistor.

IC Role / Device Role / Timing Role: High-CMRR (86 dB min) differential amplifier converting shunt voltage to ground-referenced signal for controller.

Use Value: 36 V max supply rating allows direct connection to 24 V rail; rail-to-rail output ensures full-scale use of 3.3 V ADC input range.

Use Scenario: Driving SAR ADC (e.g., AD7980) input in data acquisition system sampling 0–10 V industrial sensors.

IC Role / Device Role / Timing Role: Low-output-impedance buffer providing fast settling (<2.5 µs to 0.01%) and charge injection immunity.

Use Value: 4.0 V/μs slew rate and 4 MHz GBW ensure <0.5 LSB error during 1 MSPS sampling; rail-to-rail input accommodates bipolar sensor outputs.

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision rail-to-rail op amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AD8676ARZ-REEL7	Lower offset (12 μV typ), higher GBW (10 MHz), but only 36 V max supply and no guaranteed rail-to-rail input below 1.2 V.	Better for ultra-precision DC apps (e.g., weigh scales); less suitable for 3 V single-supply sensor interfaces requiring true 0 V input.	Select AD8676ARZ-REEL7 when offset drift <0.1 μV/°C is critical and supply ≥±5 V; retain OP284ES-REEL7 for 3 V operation with full rail-to-rail input.
OPA2188AIDR	Zero-drift architecture (0.003 μV/°C drift), lower noise (8.8 nV/√Hz), but 2 MHz GBW and 36 V max supply.	Superior long-term stability in uncalibrated field instruments; insufficient bandwidth for >100 kHz filter stages or fast DAC buffering.	Choose OPA2188AIDR for maintenance-free 10-year deployments; choose OP284ES-REEL7 when 4 MHz bandwidth and 4.0 V/μs slew are mandatory.

Compared with AD8676ARZ-REEL7 and OPA2188AIDR, OP284ES-REEL7 uniquely balances 4 MHz bandwidth, true rail-to-rail input down to 0 V, 3.9 nV/√Hz noise, and −40°C to +125°C qualification - making it the optimal choice for cost-sensitive, wide-temperature, mixed-signal industrial designs where both AC fidelity and DC precision are required.

Availability

OP284ES-REEL7 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 OP284ES-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 OP284ES-REEL7 belongs to the OPx84 family - engineered specifically for portable instrumentation and single-supply precision signal chains demanding rail-to-rail operation, low noise, and wide temperature resilience.

FAQ

What supply voltage range does the OP284ES-REEL7 support?

The OP284ES-REEL7 operates from 3 V to 36 V single supply (±1.5 V to ±18 V dual supply), with full specification compliance across this range. At 3 V, it maintains 65 μV typical offset, 3.9 nV/√Hz noise, and rail-to-rail input/output swing - enabling direct use in modern low-voltage IoT sensor nodes and wearable medical devices without voltage translation.

Is the OP284ES-REEL7 unity-gain stable?

Yes, the OP284ES-REEL7 is explicitly unity-gain stable per its datasheet and characterization. It achieves this through internal compensation that ensures ≥45° phase margin at 4.25 MHz GBW, allowing safe use as a voltage follower in high-impedance sensor interfaces without external compensation networks or gain-setting resistors.

Does the OP284ES-REEL7 have rail-to-rail input capability?

Yes, the OP284ES-REEL7 features true rail-to-rail input operation: its common-mode input voltage range extends from V_– to V₊ across all supply conditions (e.g., 0 V to 5 V at 5 V supply). This is achieved via complementary NPN/PNP input pairs and enables accurate amplification of signals near ground or supply rails - critical for single-supply 3.3 V microcontroller systems.

What is the maximum output current capability of the OP284ES-REEL7?

The OP284ES-REEL7 delivers ±6.5 mA output current per amplifier at 25°C (±10 mA at ±15 V per datasheet Table 4), with short-circuit protection limiting sustained current to ~20 mA. This supports direct driving of 2 kΩ loads at full rail-to-rail swing and interfaces reliably with ADC reference inputs, LED drivers, and analog multiplexers without external buffers.

How does the OP284ES-REEL7 perform in terms of input offset voltage drift?

The OP284ES-REEL7 E-grade exhibits a maximum input offset voltage drift of 2.0 μV/°C over −40°C to +125°C. At 25°C, typical offset is 65 μV, rising to 165 μV max across temperature - significantly tighter than general-purpose op amps (e.g., LM358: 10 μV/°C typical, 30 μV/°C max), making it suitable for uncalibrated industrial temperature sensors and strain gauge bridges.

OP284ES-REEL7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Amplifier Type:: General Purpose

Number of Circuits:: 2

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:: 100 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:: 8-SOIC

OP284ES-REEL7 FAQ

1.How can I place an order for OP284ES-REEL7 through Aetrix?

Please submit a Request for Quotation (RFQ) for OP284ES-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 OP284ES-REEL7 reliable?

The price and inventory of OP284ES-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP284ES-REEL7 is usually 5 days.

3.What payment methods are accepted for OP284ES-REEL7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP284ES-REEL7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for OP284ES-REEL7?

OP284ES-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your OP284ES-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 OP284ES-REEL7?

For technical support, including OP284ES-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP284ES-REEL7 requirements.

6.How does Aetrix verify that OP284ES-REEL7 is sourced from the original manufacturer or authorized distributors?

All OP284ES-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 OP284ES-REEL7 meets industry standards.

7.What is the process for return or replacement of OP284ES-REEL7?

All OP284ES-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with OP284ES-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 OP284ES-REEL7 part is unused and in its original packaging.

Return procedure for OP284ES-REEL7:

1.Submit a request within 90 days.

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

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