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Analog Devices Inc. OP184ESZ-REEL
- Part No.:
- OP184ESZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OP184ESZ-REEL.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,137
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Product details
Overview
OP184ESZ-REEL from Analog Devices is a precision single-supply rail-to-rail input and output operational amplifier in an 8-lead SOIC package. 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 OP184ESZ-REEL datasheet, OP184ESZ-REEL pinout, OP184ESZ-REEL application, or OP184ESZ-REEL equivalent, key selection criteria include its guaranteed −40°C to +125°C operation, 3 V to 36 V supply range, rail-to-rail swing capability, and low-noise performance critical for precision analog front-ends in portable telecom and power control systems.
Technical Context
The OP184ESZ-REEL employs a dual-differential input stage (NPN and PNP pairs) to achieve true rail-to-rail common-mode input range across ±1.5 V to ±18 V supplies. Its compound folded cascade second stage combines differential outputs into a single-ended signal while maintaining unity-gain stability and 45° phase margin.
Rail-to-rail output is realized via an inverting, voltage-driven output stage with separate sourcing and sinking paths-Q5 for sourcing and Q6 for sinking-limiting saturation to ~100 mV below V+ and ~20 mV above V− under 1 mA load, ensuring >97% of full supply swing at 5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 36 V (or ±1.5 V to ±18 V): supports single-supply industrial and battery-powered systems without split rails. |
| Gain Bandwidth Product | 4.25 MHz (±15 V): enables stable closed-loop operation up to 100 kHz with gain ≥40, suitable for active filters and sensor signal chains. |
| Input Offset Voltage | 65 μV typ (25°C, E grade): ensures <0.1% error in 12-bit ADC input buffers operating at 3.3 V full-scale. |
| Voltage Noise Density | 3.9 nV/√Hz @ 1 kHz: preserves SNR in low-level transducer amplification (e.g., piezoelectric sensors) without requiring external filtering. |
| Slew Rate | 4.0 V/μs (±15 V): supports 10 V p-p signals up to ~35 kHz full-power bandwidth, sufficient for 12-bit DAC reconstruction. |
| Common-Mode Rejection | 86 dB (−40°C to +125°C, VCM = 1.0–4.0 V): maintains accuracy in noisy environments where ground shifts occur, such as motor drive feedback loops. |
| Operating Temperature | −40°C to +125°C: qualified for extended industrial applications including automotive body electronics and industrial PLC I/O modules. |
Pinout & Package
OP184ESZ-REEL is housed in an 8-lead SOIC (S-suffix) surface-mount package with standard JEDEC MS-012AC dimensions (4.9 mm × 3.9 mm × 1.45 mm). Pin 1 is marked by a notch or dot; pins are numbered counterclockwise from top-left when viewed from top.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output node; capable of sourcing/sinking ±6.5 mA (3 V) to ±10 mA (±15 V); rail-to-rail swing limited to 100 mV below V+ and 20 mV above V−. |
| 2 | −IN | Inverting input; part of dual-differential pair (NPN/PNP); input bias current polarity reverses across common-mode range-requires balanced source impedances. |
| 3 | +IN | Non-inverting input; mirrors −IN behavior; common-mode range extends to both supply rails (0 V to V+ or −VS to +VS). |
| 4 | V− | Negative supply terminal; accepts GND (single-supply) or negative rail (dual-supply); must be decoupled with 0.1 μF ceramic capacitor near pin. |
| 5 | NC | No connect; internally unconnected; must remain floating-no routing or soldering permitted. |
| 6 | DNC | Do not connect; internal test node; electrically isolated during normal operation-must be left open. |
| 7 | V+ | Positive supply terminal; supports up to 36 V or +18 V; PSRR of 76 dB (−40°C to +125°C) reduces supply ripple impact on output. |
| 8 | NC | No connect; internally unconnected; must remain floating-no routing or soldering permitted. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables multistage filter designs in 3 V systems without level-shifting; preserves >97% dynamic range at 5 V supply. |
| Low 3.9 nV/√Hz voltage noise | Permits direct amplification of microvolt-level sensor outputs (e.g., thermocouples, strain gauges) without degrading system SNR. |
| 65 μV max offset (E grade) | Reduces calibration burden in precision measurement systems; eliminates need for external nulling circuitry in 16-bit data acquisition. |
| Unity-gain stable | Supports buffer configurations without external compensation; simplifies layout and reduces BOM count in DAC output stages. |
| −40°C to +125°C operation | Validates use in under-hood automotive sensors and industrial motor controllers without derating or thermal management overhead. |
Applications
| Battery-Powered Instrumentation | DAC Output Amplifier |
|---|---|
|
Use Scenario: Portable handheld multimeter measuring DC voltage with 16-bit resolution and auto-ranging. IC Role / Device Role / Timing Role: Precision buffer between SAR ADC and display driver; rejects supply ripple and maintains linearity over 3 V battery discharge curve. Use Value: Rail-to-rail input accepts zero-volt referenced signals; 65 μV offset contributes <0.002% error at 3.3 V full scale, meeting Class II accuracy requirements. |
Use Scenario: Industrial 12-bit DAC generating programmable 0–10 V analog setpoints for PID temperature controllers. IC Role / Device Role / Timing Role: Output amplifier driving 1 kΩ load with minimal gain error and monotonicity distortion. Use Value: 4.0 V/μs slew rate settles 10 V step within 4 µs (0.01%), preserving DAC update rate; rail-to-rail output delivers full 0–10 V swing from 12 V supply. |
| Power Supply Control and Protection | ADC Input Buffer |
|
Use Scenario: Overvoltage protection circuit monitoring 24 V DC bus in factory automation equipment. IC Role / Device Role / Timing Role: Comparator input buffer with precise threshold reference; interfaces to fast-response shutoff logic. Use Value: 86 dB CMRR rejects common-mode noise from switching regulators; 36 V absolute max rating allows direct connection to 24 V rail without attenuation. |
Use Scenario: Anti-aliasing and drive stage for 1 MSPS 14-bit successive approximation ADC sampling thermistor networks. IC Role / Device Role / Timing Role: Low-noise, low-output-impedance buffer isolating RC filter from ADC input capacitance. Use Value: 3.9 nV/√Hz noise adds <0.5 LSB RMS noise at 10 kHz bandwidth; 1.45 mA quiescent current minimizes battery drain in portable data loggers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8671ARZ | Lower 1.3 nV/√Hz noise but narrower 10 MHz GBP; no rail-to-rail input (CMVR = 1 V to V+ − 1.2 V); 125°C max temp. | Better for low-noise, high-gain (>100) DC-coupled stages; unsuitable for true 0-V referenced inputs or wide common-mode swing. | Select AD8671ARZ only when ultra-low noise dominates and rail-to-rail input is unnecessary; verify CMVR compatibility with sensor output range. |
| OPA333AIDBVR | Zero-drift architecture; 0.1 μV/°C offset drift vs. OP184ESZ-REEL's 2.0 μV/°C; lower 17 μA supply current but 350 kHz GBP. | Ideal for high-precision, low-power DC measurements (e.g., weigh scales); insufficient bandwidth for DAC reconstruction or active filtering. | Choose OPA333AIDBVR for sub-μV offset stability over temperature in static sensing; avoid for AC-coupled or >100 kHz signal paths. |
Compared with AD8671ARZ and OPA333AIDBVR, OP184ESZ-REEL uniquely balances rail-to-rail input/output, 4 MHz bandwidth, and 3.9 nV/√Hz noise-making it optimal for mixed-signal applications requiring both precision DC accuracy and robust AC performance in compact industrial and portable designs.
Availability
OP184ESZ-REEL 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 extended temperature ranges and long production lifecycles.
Supply support for OP184ESZ-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 OP184ESZ-REEL belongs to the OPx84 family of precision rail-to-rail op amps designed specifically for portable instrumentation and single-supply industrial signal conditioning where ac fidelity and dc accuracy must coexist.
FAQ
What supply voltage range does the OP184ESZ-REEL support?
The OP184ESZ-REEL operates from 3 V to 36 V single supply or ±1.5 V to ±18 V dual supply. This wide range enables direct integration into 3.3 V microcontroller systems, 24 V industrial controls, and legacy ±15 V test equipment without level-shifting circuitry. Absolute maximum ratings specify ±18 V on all pins, allowing safe operation even during transient overvoltage events.
Is the OP184ESZ-REEL unity-gain stable?
Yes, the OP184ESZ-REEL is explicitly unity-gain stable per its datasheet and functional description. It achieves this through internal compensation that guarantees ≥45° phase margin at unity gain across all supply voltages and temperatures. This allows direct use as a voltage follower in DAC output stages or sensor buffers without external compensation components.
Does the OP184ESZ-REEL have rail-to-rail input and output capability?
Yes, the OP184ESZ-REEL features true rail-to-rail input and output operation. Its input common-mode range extends from V− to V+, and its output swings to within 100 mV of V+ and 20 mV of V− under 1 mA load. This enables full utilization of supply headroom in low-voltage systems like 3 V battery-powered devices and eliminates the need for external biasing networks.
What is the typical input offset voltage for OP184ESZ-REEL?
The OP184ESZ-REEL (E grade) has a typical input offset voltage of 65 μV at 25°C, with a maximum of 165 μV over the full −40°C to +125°C temperature range. This low offset ensures minimal gain error in precision measurement circuits-for example, contributing less than 0.002% error in a 3.3 V full-scale 16-bit system-reducing or eliminating the need for system-level calibration.
Can OP184ESZ-REEL drive capacitive loads?
The OP184ESZ-REEL can drive moderate capacitive loads up to ~100 pF without instability, as confirmed by small-signal overshoot data in Figure 30. For larger loads (e.g., >200 pF), isolation resistance (≥100 Ω) or a dedicated output buffer is recommended. Its output stage lacks built-in capacitive load compensation, so layout parasitics and PCB trace capacitance must be minimized in high-frequency applications.
OP184ESZ-REEL 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:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- 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:
- 2.25mA
- 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
OP184ESZ-REEL FAQ
1.How can I place an order for OP184ESZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for OP184ESZ-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 OP184ESZ-REEL reliable?
The price and inventory of OP184ESZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP184ESZ-REEL is usually 5 days.
3.What payment methods are accepted for OP184ESZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP184ESZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP184ESZ-REEL?
OP184ESZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP184ESZ-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 OP184ESZ-REEL?
For technical support, including OP184ESZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP184ESZ-REEL requirements.
6.How does Aetrix verify that OP184ESZ-REEL is sourced from the original manufacturer or authorized distributors?
All OP184ESZ-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 OP184ESZ-REEL meets industry standards.
7.What is the process for return or replacement of OP184ESZ-REEL?
All OP184ESZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with OP184ESZ-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 OP184ESZ-REEL part is unused and in its original packaging.
Return procedure for OP184ESZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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