My Inquiry
My Account
Analog Devices Inc. OP284EPZ
- Part No.:
- OP284EPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
OP284EPZ.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,538
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OP284EPZ from Analog Devices is a dual-channel, precision rail-to-rail input and output operational amplifier optimized for single-supply instrumentation. It delivers 4 MHz gain bandwidth, 3.9 nV/√Hz voltage noise density, and 65 μV typical input offset voltage (E grade), operating from 3 V to 36 V (±1.5 V to ±18 V). It is widely deployed in DAC output amplification, ADC input buffering, and battery-powered sensor signal conditioning.
For engineers reviewing the OP284EPZ datasheet, OP284EPZ pinout, OP284EPZ application, or OP284EPZ equivalent, this page provides verified electrical specifications, thermal performance data, rail-to-rail interface behavior, and real-world design guidance for low-noise, wide-temperature industrial systems.
Technical Context
The OP284EPZ employs a composite input stage with concurrent NPN and PNP differential pairs enabling true rail-to-rail common-mode input range (0 V to VS) and output swing within 125 mV of either rail at 1 mA load. Its folded-cascade second-stage architecture supports unity-gain stability while delivering 4.0 V/μs slew rate and 240 V/mV large-signal voltage gain (typical).
Designed for hot extended industrial operation (−40°C to +125°C), the device features internal input overvoltage protection clamping (±0.6 V differential limit) and exhibits CMRR ≥86 dB over 1.0 V–4.0 V common-mode range. Output short-circuit current is internally limited to ±20 mA, with thermal shutdown protection enabled via junction temperature monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 36 V (or ±1.5 V to ±18 V); enables direct integration into 3.3 V, 5 V, 12 V, and 24 V industrial power domains without level-shifting. |
| Gain Bandwidth Product | 4.25 MHz (typ. at ±15 V); supports stable closed-loop gain configurations up to 10× at 400 kHz with <0.1% distortion. |
| Input Offset Voltage (E Grade) | 65 μV (typ. at 25°C, 5 V supply); ensures ≤1 LSB error in 16-bit ADC front-ends with full-scale ranges down to 4 V. |
| Voltage Noise Density | 3.9 nV/√Hz (at 1 kHz); maintains SNR >90 dB in 20 kHz audio-band sensor interfaces with 10 kΩ source impedance. |
| Output Swing (1 mA load) | Within 125 mV of V− and 200 mV of V+ (at 5 V supply); allows full 0–5 V dynamic range utilization in single-supply microcontroller analog I/O stages. |
| Common-Mode Rejection Ratio | 86 dB (min. over −40°C to +125°C, 1.0–4.0 V VCM); rejects power rail ripple and ground bounce in noisy embedded control environments. |
| Slew Rate | 4.0 V/μs (typ. at ±15 V); supports clean 10 VPP sinusoidal output at 100 kHz without slewing-induced distortion. |
Pinout & Package
OP284EPZ is housed in an 8-lead PDIP package (P-suffix), with lead pitch 0.100″ and body dimensions 0.355″ × 0.375″. The package is through-hole mountable and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT A | Amplifier A output | Capable of sourcing/sinking ±6.5 mA; rail-to-rail swing with 125 mV headroom to V− and 200 mV to V+ at 5 V supply. |
| 2 - −IN A | Inverting input A | Part of NPN/PNP composite input pair; bias current polarity reverses across common-mode range-requires matched source impedances. |
| 3 - +IN A | Non-inverting input A | Same input structure as Pin 2; differential input voltage must be limited to ±0.6 V to avoid junction avalanche. |
| 4 - V+ | Positive supply rail | Accepts 3–36 V (single) or +1.5–+18 V (dual); PSRR = 76 dB (min.) over full temperature range. |
| 5 - V− | Negative supply rail / GND reference | May be connected to ground (single-supply) or negative rail (dual-supply); input common-mode extends to V−. |
| 6 - +IN B | Non-inverting input B | Independent channel B input; identical electrical characteristics to Pin 3; no crosstalk above −140 dB at 1 kHz. |
| 7 - −IN B | Inverting input B | Independent channel B input; same bias current behavior as Pin 2; requires separate impedance matching. |
| 8 - OUT B | Amplifier B output | Electrically isolated from OUT A; shares same output stage architecture and drive capability. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 3 V–36 V supply rails in single-ended configurations-critical for low-voltage battery-powered instrumentation. |
| Low 3.9 nV/√Hz voltage noise | Preserves signal integrity in high-gain transducer interfaces (e.g., strain gauges, thermopiles) without requiring external filtering. |
| 65 μV max input offset (E grade) | Reduces calibration overhead in precision measurement systems-supports untrimmed 16-bit data acquisition with <±0.1% FSR error. |
| −40°C to +125°C operating range | Qualified for under-hood automotive, industrial motor drives, and outdoor telecom equipment without derating. |
| Unity-gain stable | Eliminates need for external compensation in buffer, follower, and active filter designs-reduces BOM count and layout area. |
Applications
| Battery-Powered Instrumentation | DAC Output Amplification |
|---|---|
|
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 to capture full sensor range and rail-to-rail output to maximize ADC dynamic range. Use Value: 65 μV offset and 3.9 nV/√Hz noise enable sub-100 μV resolution without chopper stabilization or auto-zero circuitry. |
Use Scenario: Boosting 12-bit DAC output (0–2.5 V) to 0–5 V full-scale for actuator control in PLC analog outputs. IC Role / Device Role / Timing Role: Unity-gain buffer with fast settling (<2.5 μs to 0.01%) and low THD+N (<0.001% at 1 kHz) to preserve DAC monotonicity. Use Value: 4.0 V/μs slew rate and 4.25 MHz GBW ensure glitch-free step response for 100 Hz update-rate industrial DACs. |
| ADC Input Buffer | Power Supply Control & Protection |
|
Use Scenario: Driving SAR ADC inputs (e.g., AD768x family) with high-Z, low-charge-injection requirements in energy metering. IC Role / Device Role / Timing Role: Low-output-impedance voltage follower isolating ADC sample capacitor from high-impedance sensor sources. Use Value: Output impedance <1 Ω at 10 kHz (per Figure 23) prevents settling errors and maintains ENOB >15 bits at 100 kSPS. |
Use Scenario: Monitoring 24 V DC bus voltage and current in industrial SMPS with overvoltage/overcurrent trip logic. IC Role / Device Role / Timing Role: High-common-mode rejection comparator input stage and error amplifier in feedback loop. Use Value: CMRR ≥86 dB over −40°C to +125°C ensures accurate sensing despite 100 mV ripple on 24 V rail. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP2177ARZ | Lower offset (25 μV typ.), lower noise (2.9 nV/√Hz), but only 1.3 MHz GBW and not rail-to-rail output. | Preferred for ultra-precision DC measurements where bandwidth <1 MHz suffices; unsuitable for rail-to-rail output swing needs. | Select OP2177ARZ when offset drift and long-term stability dominate; choose OP284EPZ when AC performance and full-rail swing are required. |
| AD8676ARZ | Higher precision (12 μV offset), wider GBW (10 MHz), but higher supply current (2.3 mA/amplifier) and no rail-to-rail input. | Better for high-speed, high-accuracy closed-loop filters; cannot accept input signals near V− or V+ without clipping. | Choose AD8676ARZ for 10 MHz signal chain stages with tight DC specs; retain OP284EPZ for single-supply sensor interfaces demanding true rail-to-rail operation. |
Compared with OP2177ARZ and AD8676ARZ, OP284EPZ uniquely balances rail-to-rail I/O, 4 MHz bandwidth, and 65 μV offset in a single 8-pin PDIP package-making it optimal for cost-sensitive, space-constrained industrial analog front-ends where supply headroom is limited.
Availability
OP284EPZ is available at Aetrix Electronics and suitable for battery-powered instrumentation, power supply control and protection, and DAC/ADC interface circuits requiring stable component supply across extended temperature and voltage ranges.
Supply support for OP284EPZ 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The OP284EPZ belongs to the OPx84 precision op amp family, engineered specifically for single-supply portable instrumentation-emphasizing rail-to-rail operation, low noise, and wide temperature resilience without sacrificing bandwidth or dc accuracy.
FAQ
What is the maximum operating temperature range for OP284EPZ?
The OP284EPZ is specified for continuous operation from −40°C to +125°C, meeting the hot extended industrial temperature grade. This rating applies to both E-grade and F-grade variants and is validated per Analog Devices' qualification standards for PDIP packaging. The device maintains all key parameters-including offset voltage, CMRR, and slew rate-within datasheet limits across this full range, making OP284EPZ suitable for under-hood automotive sensors and industrial motor control enclosures.
Does OP284EPZ support true rail-to-rail input with a 3 V supply?
Yes, OP284EPZ supports true rail-to-rail input common-mode range from V− to V+ across its entire supply range, including 3 V operation. At VS = 3 V, the input voltage range is 0 V to 3 V (Table 3), and the device maintains CMRR ≥56 dB over that span. This enables direct interfacing with resistive sensors, Hall effect devices, and other transducers whose outputs swing fully between ground and supply-without external level-shifting circuitry.
Can OP284EPZ drive capacitive loads without instability?
OP284EPZ is unity-gain stable and can safely drive up to 300 pF capacitive loads with minimal overshoot (<10%) when configured as a unity-gain buffer (Figure 30). For loads exceeding 300 pF, a small series resistor (10–50 Ω) between the output and capacitance restores phase margin. This behavior is confirmed in the datasheet's transient response plots (Figures 39–42) and makes OP284EPZ suitable for driving ADC input capacitors and long PCB traces in data acquisition systems.
What is the typical supply current per amplifier in OP284EPZ at 5 V?
The typical supply current per amplifier in OP284EPZ is 1.45 mA at VS = 5 V and TA = 25°C (Table 2). Over the full −40°C to +125°C range, supply current remains stable between 1.35 mA and 1.55 mA. This low quiescent current enables use in always-on battery-powered nodes-e.g., wireless sensor transmitters-where average system current must stay below 10 mA for multi-year operation on coin cells.
How does input bias current behavior affect PCB layout for OP284EPZ?
OP284EPZ exhibits polarity-reversing input bias currents across the common-mode range (Figure 10), meaning the effective bias current at +IN and −IN changes sign and magnitude depending on VCM. To minimize offset error and CMRR degradation, PCB layout must balance source impedances seen by both inputs-ideally within 0.1% tolerance. Unbalanced impedances cause voltage drops that convert bias current mismatch into additional input offset, especially critical in high-gain, low-drift applications like precision weigh scales.
OP284EPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
OP284EPZ FAQ
1.How can I place an order for OP284EPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for OP284EPZ 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 OP284EPZ reliable?
The price and inventory of OP284EPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP284EPZ is usually 5 days.
3.What payment methods are accepted for OP284EPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP284EPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP284EPZ?
OP284EPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP284EPZ 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 OP284EPZ?
For technical support, including OP284EPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP284EPZ requirements.
6.How does Aetrix verify that OP284EPZ is sourced from the original manufacturer or authorized distributors?
All OP284EPZ 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 OP284EPZ meets industry standards.
7.What is the process for return or replacement of OP284EPZ?
All OP284EPZ units undergo pre-shipment inspection (PSI). If there is an issue with OP284EPZ, 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 OP284EPZ part is unused and in its original packaging.
Return procedure for OP284EPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OP284EPZ Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
