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Analog Devices Inc. OP293FSZ
- Part No.:
- OP293FSZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OP293FSZ.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:328
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Product details
Overview
OP293FSZ from Analog Devices is a dual, precision, micropower operational amplifier optimized for single-supply operation down to +1.7 V, featuring 100 µV max offset voltage, 15 µA/amplifier supply current, ±8 mA output drive, rail-to-rail input (including ground), and output swing to within 600 mV of V+. It enables high-accuracy signal conditioning in battery-powered medical sensors and portable instrumentation.
For engineers reviewing the OP293FSZ datasheet, OP293FSZ pinout, OP293FSZ application, or OP293FSZ equivalent, this page delivers 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 technical and application differences.
Technical Context
The OP293FSZ employs a PNP-input stage enabling true ground-referenced common-mode input range and eliminating phase reversal below ground-unlike the OP193, it integrates lateral PNP transistors (Q7/Q8) for automatic level-shifting under overvoltage conditions. Its totem-pole NPN output stage delivers 5 mV low-level saturation and supports ±8 mA load current even at 2 V supply.
It achieves unity-gain stability with <200 pF capacitive loads and maintains 35 kHz gain-bandwidth product at ±15 V, dropping to 25 kHz at +2 V. High open-loop gain (600 V/mV typ.) and 116 dB CMRR support precision DC-coupled amplification in strain gage and temperature transducer front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.7 V to ±18 V - operates from single-cell lithium (3 V) or dual ±15 V rails without redesign. |
| Input Offset Voltage | 100 µV max (F grade) - enables sub-millivolt DC accuracy in digital scale and medical sensor amplifiers. |
| Supply Current per Amplifier | 14.5 µA typ. at +3 V - extends battery life beyond thousands of hours in portable equipment. |
| Output Drive Capability | ±8 mA - drives 100 kΩ loads to full swing and sustains 5 mA into 2 kΩ at low supply voltages. |
| Input Common-Mode Range | Includes ground (0 V) to V+ − 1.5 V - accepts unipolar sensor outputs (e.g., thermistor bridges) without level-shifting. |
| Output Voltage Swing | VOL = 280 mV max at −1 mA (VS = +3 V) - ensures >2.1 V output headroom for 2.5 V ADC references. |
| Gain-Bandwidth Product | 35 kHz (±15 V), 25 kHz (+2 V) - sufficient for DC–10 kHz sensor signal bandwidths with stable closed-loop gain. |
Pinout & Package
OP293FSZ is housed in an 8-lead SOIC_N (S suffix) surface-mount package with 1.27 mm pitch, θJA = 158°C/W, and rated for −40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - delivers buffered, low-impedance signal to downstream stages or ADC inputs. |
| 2 | −IN A | Inverting input for Amp A - accepts feedback or differential signals; protected by series resistors against ±20 V overvoltage. |
| 3 | +IN A | Non-inverting input for Amp A - connects directly to sensor sources; PNP input allows operation at ground potential. |
| 4 | V− | Negative supply rail - tied to GND in single-supply systems; defines lower output swing limit (within 5 mV). |
| 5 | +IN B | Non-inverting input for Amp B - independent channel for dual-sensor monitoring or instrumentation amplifier configurations. |
| 6 | −IN B | Inverting input for Amp B - supports matched dual-channel feedback networks without cross-talk. |
| 7 | OUT B | Amplifier B output - identical performance to OUT A; enables simultaneous processing of two analog channels. |
| 8 | V+ | Positive supply rail - accepts +1.7 V to +18 V; powers both amplifiers; determines upper output swing (V+ − 600 mV). |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal on input below ground | Q7/Q8 lateral PNP protection prevents output inversion down to −5 V below V− at 25°C - eliminates external clamping diodes in most portable designs. |
| Rail-to-rail input including ground | PNP input stage enables direct connection of 0–2.5 V thermistor or bridge outputs without biasing resistors or charge pumps. |
| Micropower operation at ultra-low voltage | 14.5 µA supply current at +3 V enables continuous operation on coin cells or lithium primaries for >1 year in handheld diagnostics. |
| High open-loop gain and CMRR | 600 V/mV gain and 116 dB CMRR maintain DC accuracy despite PCB leakage or supply ripple in battery-powered instruments. |
| Output sink/source capability | ±8 mA drive supports driving 100 kΩ ADC inputs, LED indicators, or low-power comparators without external buffers. |
Applications
| Digital Scales | Strain Gage Interfaces |
|---|---|
|
Use Scenario: Amplifying millivolt-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 instrumentation amplifier front-end, configured as difference amplifier with matched resistor network. Use Value: 100 µV offset and 0.2 µV/°C drift ensure ≤0.05% full-scale error across −10°C to +50°C operating range without recalibration. |
Use Scenario: Signal conditioning for bonded foil strain gages in structural health monitoring sensors deployed on remote infrastructure. IC Role / Device Role / Timing Role: Low-power, ground-referenced buffer and gain stage feeding 16-bit sigma-delta ADC in energy-harvesting node. Use Value: 15 µA quiescent current extends 10-year deployment interval; rail-to-rail input accommodates gage output spanning 0–1.2 V. |
| Portable Medical Equipment | Battery-Powered Instrumentation |
|
Use Scenario: ECG electrode amplifier in disposable cardiac monitors using CR2032 coin cell power. IC Role / Device Role / Timing Role: First-stage biopotential amplifier with high input impedance and DC-coupled baseline restoration. Use Value: 65 nV/√Hz noise density and 3 µVp-p 0.1–10 Hz noise preserve microvolt-level QRS complexes; no phase reversal prevents false arrhythmia detection. |
Use Scenario: Temperature transducer amplifier in handheld HVAC commissioning tools powered by rechargeable Li-ion. IC Role / Device Role / Timing Role: Linearized output stage for PT100/1000 RTD interfaces, converting resistance to 0–5 V analog output. Use Value: Output swing to within 600 mV of V+ ensures full 4.4 V output at 5 V supply, maximizing ADC dynamic range and SNR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision micropower op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP290GSZ | Lower 1.8 µV/°C offset drift vs. OP293FSZ's 0.2–1.75 µV/°C; higher 25 µA supply current; same SOIC-8 package. | Better long-term stability in oven-controlled lab instruments; less suitable for multi-year battery life requirements. | Select OP290GSZ when drift-critical DC accuracy outweighs micropower needs. |
| AD8603ARZ | Higher 50 µA supply current; rail-to-rail output (not just input); 65 µV max offset; 10 MHz GBW - significantly faster but less efficient. | Preferred for active filters or higher-speed sensor interfaces where 35 kHz GBW is limiting; not viable for 10-year coin-cell operation. | Choose AD8603ARZ only when bandwidth >100 kHz is required and power budget allows 3× higher current draw. |
Compared with OP293FSZ, OP290GSZ trades 60% higher supply current for 10× lower offset drift, while AD8603ARZ sacrifices micropower operation for 285× greater bandwidth - making OP293FSZ the optimal balance for ultra-low-power, precision DC amplification.
Availability
OP293FSZ is available at Aetrix Electronics and suitable for portable medical equipment, battery-powered instrumentation, and strain gage interfaces requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for OP293FSZ 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 DSP ICs, serving industrial, automotive, communications, and healthcare markets with precision signal processing solutions.
The OP293FSZ belongs to Analog Devices' precision micropower op-amp family, engineered specifically for single-supply, low-voltage, long-life applications in portable and remote sensing systems.
FAQ
What is the minimum operating supply voltage for OP293FSZ?
The OP293FSZ operates down to +1.7 V single supply or ±0.85 V dual supply, enabling direct compatibility with lithium primary cells and low-voltage energy harvesting systems. At +2.0 V, it draws only 13.2 µA per amplifier while maintaining 60 V/mV large-signal gain and 25 kHz gain-bandwidth product - critical for extending battery life in portable medical devices and handheld test equipment.
Does OP293FSZ require external components to prevent output phase reversal?
No. Unlike the OP193, the OP293FSZ integrates lateral PNP transistors (Q7/Q8) that automatically level-shift the cascode stage when inputs fall below ground, preventing phase reversal down to −5 V below V− at +25°C. This eliminates the need for external clamp diodes or series resistors in most battery-powered applications, simplifying layout and reducing BOM count for the OP293FSZ.
Can OP293FSZ drive a 100 kΩ load to full output swing at 3 V supply?
Yes. With VS = +3 V, the OP293FSZ delivers VOH ≥ 2.14 V and VOL ≤ 400 mV at −1 mA load, achieving >2.1 V usable swing into 100 kΩ. Its totem-pole output stage sustains this performance across −40°C to +125°C, making the OP293FSZ ideal for interfacing with 2.5 V or 3 V ADCs in temperature transducer and strain gage circuits without external level-shifting.
What is the guaranteed maximum input offset voltage for OP293FSZ over temperature?
The OP293FSZ F-grade guarantees ≤350 µV max input offset voltage across the full −40°C to +125°C operating range, with typical value of 200 µV. This specification - combined with 0.2–1.25 µV/°C drift - ensures predictable DC error in automotive cabin sensors and industrial process controllers where ambient temperature varies widely, directly supporting the precision requirements of the OP293FSZ in harsh environments.
Is OP293FSZ unity-gain stable with capacitive loads?
Yes. The OP293FSZ is unconditionally stable in unity-gain configuration with capacitive loads up to 200 pF. For larger loads (e.g., 1000 pF), adding a 10 kΩ series resistor at the output reduces overshoot to 20%, and in-the-loop compensation (e.g., capacitor across feedback resistor) restores stability - a well-documented behavior confirmed in the OP293FSZ datasheet Figure 22 and Functional Description section.
OP293FSZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 20 nA
- Voltage - Input Offset:
- 250 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
OP293FSZ FAQ
1.How can I place an order for OP293FSZ through Aetrix?
Please submit a Request for Quotation (RFQ) for OP293FSZ 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 OP293FSZ reliable?
The price and inventory of OP293FSZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP293FSZ is usually 5 days.
3.What payment methods are accepted for OP293FSZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP293FSZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP293FSZ?
OP293FSZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP293FSZ 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 OP293FSZ?
For technical support, including OP293FSZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP293FSZ requirements.
6.How does Aetrix verify that OP293FSZ is sourced from the original manufacturer or authorized distributors?
All OP293FSZ 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 OP293FSZ meets industry standards.
7.What is the process for return or replacement of OP293FSZ?
All OP293FSZ units undergo pre-shipment inspection (PSI). If there is an issue with OP293FSZ, 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 OP293FSZ part is unused and in its original packaging.
Return procedure for OP293FSZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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