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HomeProductsIntegrated Circuits (ICs)Linear - Amplifiers - Instrumentation, OP Amps, Buffer AmpsOPA2244EA/2K5G4
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OPA2244EA/2K5G4 - Texas Instruments

Manufacturer Part Number
OPA2244EA/2K5G4
Manufacturer
Texas Instruments
Allelco Part Number
98D-OPA2244EA/2K5G4
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
6,664 pcs available, New & Original
Parts Description
IC OPAMP GP 2 CIRCUIT 8VSSOP
Package
8-VSSOP
Data sheet
-
RoHs Status
ROHS3 Compliant
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Specifications

OPA2244EA/2K5G4 Tech Specifications
Texas Instruments - OPA2244EA/2K5G4 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - OPA2244EA/2K5G4

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Supply Span (Min) 2.2 V
Voltage - Supply Span (Max) 36 V
Voltage - Input Offset 700 µV
Supplier Device Package 8-VSSOP
Slew Rate 0.1V/µs
Series MicroAmplifier™
Package / Case 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Package Tape & Reel (TR)
Output Type -
Product Attribute Attribute Value
Operating Temperature -40°C ~ 85°C
Number of Circuits 2
Mounting Type Surface Mount
Gain Bandwidth Product 430 kHz
Current - Supply 40µA (x2 Channels)
Current - Output / Channel 25 mA
Current - Input Bias 10 nA
Base Product Number OPA2244
Amplifier Type General Purpose

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 2 (1 Year)
REACH Status REACH Unaffected
ECCN EAR99

Frequently Asked Questions(FAQ)

How does the OPA2244EA/2K5G4 compare to single-supply amplifiers like the LM358 in low-voltage battery-powered applications requiring rail-to-rail output swing?
The OPA2244EA/2K5G4 delivers superior performance in precision low-voltage designs due to its 700 µV input offset voltage and 10 nA input bias current, which are significantly better than typical values for the LM358 (typically 2 mV and 50 nA). While both can operate on a 2.2 V supply, the LM358 lacks rail-to-rail output capability, limiting usable dynamic range near the rails—especially problematic in space-constrained battery systems where headroom is minimal. The OPA2244’s MicroAmplifier™ architecture ensures stable operation with lower quiescent current (40 µA per channel vs. 600 µA for LM358), improving battery life. However, the LM358 remains cost-effective for non-precision buffering tasks. For designs demanding accuracy and efficiency below 3 V, the OPA2244EA/2K5G4 offers measurable advantages despite its higher unit cost.
What are the implications of the OPA2244EA/2K5G4’s 0.1 V/µs slew rate when driving capacitive loads in closed-loop configurations?
With a slew rate of only 0.1 V/µs, the OPA2244EA/2K5G4 may exhibit noticeable distortion or slow response when driving large capacitive loads (e.g., >10 nF) under moderate to high-gain conditions. In unity-gain buffer configurations, this limits bandwidth to approximately 16 kHz at full output swing, as bandwidth (fBW) ≈ Slew Rate / (2π × Vp). For sinusoidal signals above ~100 kHz, output waveforms can become triangular rather than smooth, introducing harmonic content unsuitable for audio or sensor conditioning. Designers should avoid driving heavy capacitive loads without isolation resistors or compensation networks. If driving such loads, consider adding a small series resistor (10–100 Ω) at the output to damp oscillations and improve stability.
Can the OPA2244EA/2K5G4 be safely used in automotive-grade temperature environments exceeding 85°C?
No, the OPA2244EA/2K5G4 is rated for industrial temperatures from -40°C to 85°C and is not qualified for extended automotive operating ranges beyond 125°C. Automotive systems often require components with AEC-Q100 certification and broader thermal tolerance. Using this part outside its specified temperature window risks parametric drift—particularly in input offset voltage, which could exceed 1 mV near 85°C—and may compromise long-term reliability. For automotive applications, substitute parts like the OPA2209 or specialized automotive op-amps should be evaluated instead. The OPA2244EA/2K5G4 remains suitable for commercial or industrial embedded systems but not for harsh environmental deployments.
How does the power consumption of the OPA2244EA/2K5G4 compare to modern ultra-low-power CMOS amplifiers like the MCP6L02?
The OPA2244EA/2K5G4 draws 40 µA per channel (total 80 µA for dual configuration), which is higher than the MCP6L02’s typical 30 µA total supply current. However, the MCP6L02 achieves this through aggressive shutdown modes and reduced gain bandwidth (1 MHz nominal), whereas the OPA2244 maintains 430 kHz GBW with lower input noise and offset drift. In battery-operated devices where both power and precision matter, the trade-off depends on signal chain requirements. If sub-microvolt accuracy or low-noise amplification is needed over time, the OPA2244’s better DC specs justify its slightly higher quiescent current. But for simple sensor interfacing with minimal processing, the MCP6L02 may offer better energy efficiency without sacrificing functionality.
Is it acceptable to use the OPA2244EA/2K5G4 in a non-inverting amplifier configuration with a gain greater than 100 without risking instability?
Yes, but with caveats. The OPA2244EA/2K5G4 has an open-loop gain of over 100 dB (typically 100,000 V/V), so closed-loop gains up to 1000 are theoretically achievable before reaching unity gain. However, internal phase margin degrades at high gains due to limited gain-bandwidth product (430 kHz). At a gain of 100, the bandwidth drops to ~4.3 kHz (GBW / Gain), and beyond that, peaking or ringing may occur if layout parasitics or capacitive loading interact poorly with feedback impedance. Stable operation requires careful PCB layout: short traces, ground plane integrity, and avoidance of long feedback paths. Adding a small capacitor across the feedback resistor (e.g., 1–10 pF) can improve phase margin. Always simulate or prototype with actual load conditions.
What input common-mode range considerations apply when using the OPA2244EA/2K5G4 in a single-supply 3.3 V system?
The OPA2244EA/2K5G4 supports a wide input common-mode voltage range from rail to rail minus 1.5 V (typical), meaning inputs can go down to 0 V and up to 31.5 V in a ±15 V system. In a 3.3 V single supply, the usable input range is approximately 0 V to 1.8 V. Attempting to apply signals below 0 V or above 1.8 V will drive the input stage into cutoff or saturation, causing distortion and potential latch-up. To utilize the full dynamic range, ensure all input signals stay within this window. If sensor outputs swing near 0 V, consider AC-coupling with DC restoration circuitry; otherwise, use a reference voltage near mid-supply (e.g., 1.65 V) to center the signal.
How does the input bias current of the OPA2244EA/2K5G4 affect precision measurement circuits using high-value source impedances?
With an input bias current of 10 nA, the OPA2244EA/2K5G4 introduces negligible errors in most cases, but at high source impedances (e.g., >1 MΩ), even small leakage currents can create significant voltage offsets. For example, at a 1 MΩ source resistance, a 10 nA bias current produces a 10 mV error—comparable to its 700 µV offset voltage. This becomes critical in pH meters, weight sensors, or thermocouple interfaces where signal levels are microvolts and source resistances are high. Compensation techniques include using FET-input op-amps, adding guard rings on PCBs, or placing low-leakage capacitors in parallel with high-resistance nodes to bypass bias current effects.
What substitution alternatives exist for the OPA2244EA/2K5G4 in cost-sensitive designs where pin compatibility and performance parity are required?
Candidate substitutes include the LM2904ST (dual version of LM358), LM2904YST, and BA3472RFVM-TR. These parts share similar supply voltage ranges and package types but differ critically in key parameters: they have higher input offset voltages (up to 6 mV), much higher bias currents (tens of nanoamps), and no rail-to-rail output. While they may fit mechanically and electrically in simpler buffers, they introduce unacceptable error in precision analog chains. The OPA2244EA/2K5G4 itself appears in TI’s substitution list alongside these, indicating limited direct replacements. Designers must weigh cost savings against increased calibration effort, reduced yield, and degraded SNR. In many cases, the marginal cost difference justifies retaining the OPA2244EA/2K5G4 for robust, repeatable performance.
Why might the OPA2244EA/2K5G4 be preferred over newer rail-to-rail op-amps in legacy designs requiring proven long-term availability?
Despite newer alternatives offering improved rail-to-rail swing and lower noise, the OPA2244EA/2K5G4 benefits from decades of maturity within TI’s portfolio. Its Base Product Number, OPA2244, has been in production since the late 1990s, ensuring stable sourcing, transparent obsolescence planning, and extensive application note support. In industrial control systems or medical devices where regulatory traceability matters, selecting a long-viable part reduces redesign risk. Additionally, the 8-VSSOP package aligns with standard footprints, easing migration from older platforms. While newer parts may outperform it in specific metrics, the OPA2244EA/2K5G4 offers predictable behavior and supply continuity that justify continued use in non-cutting-edge applications.
How does the gain-bandwidth product of 430 kHz limit the OPA2244EA/2K5G4 in active filter applications?
In second-order active filters (e.g., Butterworth or Chebyshev), the op-amp’s gain-bandwidth product directly constrains maximum achievable cutoff frequency relative to gain. For instance, a non-inverting filter with a gain of 10 can only reliably operate up to ~43 kHz before roll-off begins affecting passband flatness. Even with unity gain buffering, bandwidth is limited by slew rate to ~16 kHz at peak output amplitude. This makes the OPA2244EA/2K5G4 unsuitable for audio filtering above 20 kHz or RF front-end preselection. For lower-frequency applications (e.g., sensor signal conditioning below 10 kHz), it performs adequately. To extend usable bandwidth, reduce filter order or accept reduced gain, or select a faster op-amp with higher GBW.
What precautions are necessary when soldering the OPA2244EA/2K5G4 in lead-free assembly processes exceeding 260°C?
The OPA2244EA/2K5G4 has an MSL rating of 2 (shelf life one year), indicating sensitivity to moisture-induced damage during reflow. Exposure to temperatures above 260°C for prolonged periods can cause internal delamination or popcorning if moisture is trapped beneath the die. Ensure proper baking prior to reflow if storage exceeded 12 months. Follow JEDEC J-STD-033 guidelines for bake cycles (e.g., 125°C for 24 hours). Also, avoid excessive thermal mass on the VSSOP package during hot air rework, as localized heating may degrade bond wires or substrate integrity. Use a temperature-controlled iron set below 350°C and minimize contact time. Proper handling preserves long-term reliability in mass-production environments.
Can the OPA2244EA/2K5G4 drive inductive loads directly without additional protection circuitry?
No, the OPA2244EA/2K5G4 is not designed to source or sink large transient currents associated with inductive loads (e.g., relays, solenoids). Its output current per channel is limited to 25 mA, but inductive kickback can generate hundreds of volts in microseconds, far exceeding the absolute maximum ratings (±36 V supply implies internal ESD structures may fail). Without flyback diodes or TVS protection, repeated switching can damage the device. Instead, interface inductive loads through external drivers (e.g., MOSFETs with gate resistors) and always include reverse-biased diodes across the coil. The OPA2244EA/2K5G4 excels at signal conditioning, not power switching—use discrete transistors or dedicated driver ICs for such tasks.
How does the OPA2244EA/2K5G4 behave in open-loop mode, and why is this configuration generally discouraged?
In open-loop mode, the OPA2244EA/2K5G4 operates as a comparator with open-loop gain exceeding 100,000 V/V. This means even minute input differences (as low as 7 µV) can saturate the output to near supply rails. While useful in threshold detection, this configuration lacks hysteresis, making it susceptible to noise-induced false triggering. Moreover, without negative feedback, linearity is lost, and output impedance rises sharply, reducing fan-out capability. Most importantly, the high gain amplifies internal noise and offset drift, leading to unpredictable thresholds over temperature. Open-loop use should be avoided except in well-shielded, static environments with clean power supplies and deliberate design margins. Even then, Schmitt-trigger configurations or comparators are preferred for robust switching.
What role does the 8-VSSOP package play in thermal management for the OPA2244EA/2K5G4 in dense PCB layouts?
The 8-VSSOP (Very Small Shrink Outline Package) provides excellent electrical performance due to its exposed pad, which enhances heat dissipation compared to plastic DIPs. However, it offers limited thermal resistance (~150–200°C/W junction-to-air), meaning sustained output currents above 20 mA per channel can cause self-heating, especially in tightly packed boards without copper pour or vias. While the OPA2244EA/2K5G4 is rated for 25 mA output, continuous operation near this limit demands attention to layout: connect the thermal pad to a solid ground plane, avoid routing sensitive traces over it, and ensure adequate airflow. In high-duty-cycle motor control or LED dimming circuits, consider heatsinking via multiple vias or selecting a larger package like SOIC if ambient temperatures rise above 60°C.
How does the RoHS3 compliance status of the OPA2244EA/2K5G4 impact global market distribution strategies?
RoHS3 compliance ensures the OPA2244EA/2K5G4 meets European Union restrictions on hazardous substances including lead, mercury, cadmium, and certain phthalates, with added requirements for substance documentation and labeling. This facilitates unrestricted sale in EU markets and supports sustainability certifications like REACH. Since the part is labeled "RoHS3 Compliant" and "REACH Unaffected," manufacturers can confidently deploy it in consumer electronics, medical devices, and industrial equipment without legal risk. It also simplifies supply chain audits and avoids customs delays. For companies targeting international OEMs, using RoHS3-compliant components like the OPA2244EA/2K5G4 reduces compliance overhead and supports corporate ESG goals without compromising electrical performance.
What are the limitations of using the OPA2244EA/2K5G4 in high-impedance differential amplifier configurations?
High-impedance differential amplifiers rely on matched resistors to reject common-mode signals while preserving differential gain. The OPA2244EA/2K5G4’s 10 nA input bias current introduces resistor mismatch errors when R1 and R2 exceed ~1 MΩ. For example, a 10 MΩ resistor network with 10 nA bias yields a 100 mV error—dominant over microvolt-level differential signals. Additionally, leakage paths on PCB surfaces can compound this effect. To mitigate, use metal-film resistors with tight tolerances (1% or better), keep traces dry and clean, and consider guarding techniques. Alternatively, switch to FET-input amplifiers or instrumentation topologies with internal feedback that minimizes dependence on absolute resistor values. The OPA2244EA/2K5G4 works well for moderate-impedance (<100 kΩ) differential pairs but struggles at extremes.
How does the absence of a specified output short-circuit current limit affect fault tolerance in the OPA2244EA/2K5G4?
Unlike power amplifiers, the OPA2244EA/2K5G4 specifies only a typical output current of 25 mA, implying protection circuitry exists but exact trip points are not guaranteed. This means output short-circuit current may vary between units or over temperature, potentially allowing brief excursions beyond safe limits during overloads. In precision applications where catastrophic failure is unacceptable, assume worst-case scenarios and add external current-limiting resistors or polyfuses. However, for most signal-processing roles, brief shorts (e.g., accidental probe grounding) are tolerated due to internal foldback or current-limit mechanisms. Still, designers should avoid relying on this protection for mission-critical safety functions. Always review TI’s application notes for recommended external safeguards when interfacing with untrusted loads.
What distinguishes the MicroAmplifier™ branding of the OPA2244EA/2K5G4 from standard general-purpose op-amps in terms of design philosophy?
The MicroAmplifier™ series emphasizes ultra-low power consumption, rail-to-rail operation, and precision DC characteristics—core attributes of the OPA2244EA/2K5G4. Unlike older bipolar op-amps (e.g., TL07x), these devices use advanced CMOS or JFET-input stages optimized for battery life and dynamic range. The OPA2244EA/2K5G4 trades some speed (0.1 V/µs) for exceptional input offset stability and low quiescent current, reflecting a shift toward efficiency in portable and IoT systems. While not as fast as high-speed op-amps, its consistent performance across supply voltages and temperatures makes it ideal for instrumentation where repeatability outweighs bandwidth. The MicroAmplifier™ label signals TI’s commitment to integrating precision with power-aware design, distinguishing it from generic general-purpose alternatives.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments OPA2244EA/2K5G4

Product Attribute OPA2244UA/2K5G4 OPA2244EA/250G4 OPA2241UA/2K5G4 OPA2244EA/2K5
Part Number OPA2244UA/2K5G4 OPA2244EA/250G4 OPA2241UA/2K5G4 OPA2244EA/2K5
Manufacturer Luminary Micro / Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Voltage - Input Offset - - - -
Current - Supply - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Current - Output / Channel - - - -
Current - Input Bias - - - -
Series - - - -
Voltage - Supply Span (Max) - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Mounting Type - Surface Mount Through Hole Surface Mount
Voltage - Supply Span (Min) - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Amplifier Type - - - -
Output Type - Current - Unbuffered Voltage - Buffered -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Gain Bandwidth Product - - - -
Slew Rate - - - -
Number of Circuits - - - -

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Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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OPA2244EA/2K5G4 Image

OPA2244EA/2K5G4

Texas Instruments
98D-OPA2244EA/2K5G4

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