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Analog Devices Inc. OP293ESZ-REEL
- Part No.:
- OP293ESZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OP293ESZ-REEL.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,315
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Product details
Overview
OP293ESZ-REEL from Analog Devices is a dual, precision, micropower operational amplifier optimized for single-supply operation down to +1.7 V. It delivers 100 µV max offset voltage, 15 µA per amplifier supply current, ±8 mA output drive, rail-to-rail input (including ground), and output swing to within 600 mV of V+ and 5 mV of V− - enabling high-accuracy signal conditioning in battery-powered medical sensors and portable instrumentation.
For engineers reviewing the OP293ESZ-REEL datasheet, OP293ESZ-REEL pinout, OP293ESZ-REEL application, or OP293ESZ-REEL equivalent, this page provides verified specifications, SOIC_N package mapping, functional pin roles, real-world use cases in low-voltage transducer interfaces, and two validated alternative op-amps with documented performance trade-offs.
Technical Context
The OP293ESZ-REEL uses a PNP input stage enabling true ground-referenced inputs and eliminating phase reversal below V− - unlike the OP193, it integrates lateral PNP transistors (Q7/Q8) for automatic level-shifting under overvoltage conditions. Its totem-pole NPN output stage achieves 5 mV low-side swing without external pull-downs.
It operates across −40°C to +125°C with guaranteed 100 µV max offset (F grade), 0.2–1.25 µV/°C drift, and stable unity-gain performance into capacitive loads <200 pF. Large-signal gain remains ≥100 V/mV at 3 V supply with 100 kΩ load, supporting precision DC-coupled amplification in energy-constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.7 V to ±18 V - enables direct interface with lithium coin cells (3 V), alkaline stacks (2×1.5 V), and industrial dual-rail systems. |
| Input Offset Voltage (max) | 100 µV - ensures ≤0.01% gain error in 10 V full-scale strain gage bridges without trimming. |
| Supply Current per Amp | 14.5 µA at 3 V - allows >10-year battery life in continuous-monitoring devices using CR2032 cells. |
| Output Swing (low) | 5 mV above V− - eliminates need for external pull-down resistors in single-supply zero-crossing detection circuits. |
| Common-Mode Input Range | Includes ground (0 V) - supports direct connection to unbuffered thermistor or RTD sensors referenced to system ground. |
| Gain Bandwidth Product | 25 kHz at 2 V supply - sufficient for DC–100 Hz physiological signal amplification (ECG, pulse oximetry) with stability margin. |
| Operating Temperature | −40°C to +125°C - qualified for automotive cabin sensors and industrial process controllers without derating. |
Pinout & Package
OP293ESZ-REEL is housed in an 8-lead SOIC_N (S suffix) surface-mount package with standard JEDEC MS-012AC footprint (5.0 mm × 6.2 mm, 1.27 mm pitch). Thermal resistance θJA = 158°C/W on 2-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to ±8 mA; swings to within 600 mV of V+ and 5 mV of V−. |
| 2 | –IN A | Inverting input of Amp A - PNP-based, accepts common-mode voltages down to V− (ground). |
| 3 | +IN A | Non-inverting input of Amp A - same PNP structure; immune to phase reversal when driven below V−. |
| 4 | V− | Negative supply rail - serves as reference for both inputs and outputs; must be connected to ground in single-supply mode. |
| 5 | +IN B | Non-inverting input of Amp B - electrically identical to Pin 3; supports dual-channel sensor front-ends. |
| 6 | –IN B | Inverting input of Amp B - matches Pin 2; enables independent differential amplification per channel. |
| 7 | OUT B | Amplifier B output - fully independent of OUT A; shares same output drive capability and swing limits. |
| 8 | V+ | Positive supply rail - accepts up to +18 V; supplies both amplifiers; decoupling capacitor required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Guaranteed operation with inputs driven to −5 V below V− at 25°C - eliminates signal inversion in fault-tolerant sensor interfaces. |
| Rail-to-rail input | Input common-mode range includes V− (ground) and extends to V+ − 1.5 V - enables direct interfacing with 0–3.3 V ADC references. |
| Micropower operation | 14.5 µA per amplifier at 3 V - reduces quiescent power to 43.5 µW per channel, critical for multi-sensor IoT nodes. |
| High open-loop gain | ≥100 V/mV at 3 V/100 kΩ - maintains <0.1% closed-loop gain error in precision instrumentation amplifier configurations. |
| Unity-gain stable | Stable with capacitive loads <200 pF - simplifies PCB layout for ECG electrode buffers without external compensation. |
Applications
| Digital Scales | Strain Gage Interfaces |
|---|---|
|
Use Scenario: Amplifying mV-level output from load-cell Wheatstone bridges in handheld weighing devices powered by two AA batteries. IC Role / Device Role / Timing Role: Precision DC-coupled difference amplifier with offset cancellation and rail-to-rail input to maximize dynamic range from 0–3 V supply. Use Value: 100 µV max offset ensures ≤0.005% full-scale error; 15 µA quiescent current extends battery life beyond 2 years in intermittent-use devices. |
Use Scenario: Signal conditioning for bonded foil strain gages in structural health monitoring sensors deployed on bridges or wind turbine blades. IC Role / Device Role / Timing Role: Low-drift, low-power instrumentation amplifier front-end operating across −40°C to +85°C with minimal self-heating. Use Value: 0.2 µV/°C typical offset drift minimizes temperature-induced calibration drift; SOIC_N package supports automated optical inspection in high-reliability assembly. |
| Portable Medical Equipment | Battery-Powered Instrumentation |
|
Use Scenario: Front-end amplification of biopotential signals (ECG, EMG) in wearable diagnostic patches using CR2032 coin cells. IC Role / Device Role / Timing Role: Single-supply, micropower op-amp providing gain, filtering, and level-shifting before 12-bit SAR ADC sampling at 1 kHz. Use Value: 5 mV output low swing enables clean zero-biased signal acquisition; 25 kHz GBW supports anti-aliasing filter design without instability. |
Use Scenario: Sensor signal conditioning in handheld multimeters and environmental data loggers powered by alkaline or Li-SOCl₂ primary cells. IC Role / Device Role / Timing Role: Dual-channel general-purpose amplifier for simultaneous temperature (RTD) and humidity (capacitive) sensor readout. Use Value: Dual configuration reduces component count; 1.7 V minimum supply allows operation until cell voltage drops to end-of-life (≈1.8 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision micropower operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP290GSZ-REEL | Lower supply current (11 µA), higher offset (150 µV max), same SOIC-8 package but different pinout (V−/V+ swapped). | Better suited for ultra-low-power sleep modes; less accurate for DC-critical bridge sensing. | Select OP290GSZ-REEL only if sub-12 µA quiescent current outweighs 50 µV offset penalty and PCB layout accommodates pinout change. |
| AD8603ARZ-REEL7 | Higher speed (1 MHz GBW), lower noise (22 nV/√Hz), but 50 µA supply current and no phase-reversal immunity below V−. | Preferred for AC-coupled biosignal amplification; unsuitable for direct-ground-referenced DC sensors. | Choose AD8603ARZ-REEL7 when bandwidth >100 kHz is required and input protection against negative transients is managed externally. |
Compared with OP293ESZ-REEL, OP290GSZ-REEL trades accuracy for lower power and requires PCB redesign due to pinout mismatch, while AD8603ARZ-REEL7 offers superior AC performance at 3.5× higher supply current and lacks intrinsic phase-reversal protection - making OP293ESZ-REEL uniquely balanced for battery-powered DC precision sensing.
Availability
OP293ESZ-REEL is available at Aetrix Electronics and suitable for digital scales, strain gage interfaces, and portable medical equipment requiring stable component supply across extended temperature ranges and long-lifecycle deployments.
Supply support for OP293ESZ-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 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 OP293ESZ-REEL belongs to Analog Devices' precision micropower op-amp product line, engineered specifically for single-supply, low-voltage, high-accuracy sensor signal conditioning in battery-constrained environments.
FAQ
What is the minimum supply voltage for reliable operation of OP293ESZ-REEL?
The OP293ESZ-REEL operates reliably down to +1.7 V (single supply) or ±0.85 V (dual supply), as confirmed in Table 4 of the Rev. D datasheet. At 2.0 V, it maintains 13.2 µA supply current and 60 V/mV large-signal gain with 100 kΩ load - making it compatible with lithium thionyl chloride and alkaline primary cells throughout their discharge curve.
Does OP293ESZ-REEL require external offset nulling components?
No. Unlike the OP193, the OP293ESZ-REEL does not include offset null pins and is specified with 100 µV maximum input offset voltage (F grade) over temperature - eliminating the need for external potentiometers or trimming networks in most precision applications.
Can OP293ESZ-REEL drive capacitive loads without oscillation?
Yes. The OP293ESZ-REEL is unity-gain stable with capacitive loads under 200 pF, as stated in the Functional Description section. For loads >200 pF, a series resistor (e.g., 200 Ω) between amplifier output and capacitance restores phase margin without degrading DC accuracy.
What is the output voltage swing capability of OP293ESZ-REEL at 3.0 V supply?
At VS = 3.0 V, the OP293ESZ-REEL delivers VOH = 2.14 V (min) and VOL = 280 mV (max) with 1 mA load, per Table 3. This means it swings from 280 mV above V− (ground) to 860 mV below V+, preserving 1.86 V of usable output range for 3 V systems.
Is OP293ESZ-REEL pin-compatible with other dual op-amps in SOIC-8 packages?
No. OP293ESZ-REEL follows the industry-standard dual op-amp pinout (OUT A, –IN A, +IN A, V−, +IN B, –IN B, OUT B, V+), but it is not pin-compatible with legacy dual op-amps like LM358 or TL072 due to differing V−/V+ placement and lack of internal ESD diodes to rails - PCB layout must follow Analog Devices' recommended SOIC_N footprint.
OP293ESZ-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:
- -
- Slew Rate:
- 0.015V/µs
- Gain Bandwidth Product:
- 35 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 15 nA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- -
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 1.7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OP293ESZ-REEL FAQ
1.How can I place an order for OP293ESZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for OP293ESZ-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 OP293ESZ-REEL reliable?
The price and inventory of OP293ESZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP293ESZ-REEL is usually 5 days.
3.What payment methods are accepted for OP293ESZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP293ESZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP293ESZ-REEL?
OP293ESZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP293ESZ-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 OP293ESZ-REEL?
For technical support, including OP293ESZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP293ESZ-REEL requirements.
6.How does Aetrix verify that OP293ESZ-REEL is sourced from the original manufacturer or authorized distributors?
All OP293ESZ-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 OP293ESZ-REEL meets industry standards.
7.What is the process for return or replacement of OP293ESZ-REEL?
All OP293ESZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with OP293ESZ-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 OP293ESZ-REEL part is unused and in its original packaging.
Return procedure for OP293ESZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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