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HomeProductsIntegrated Circuits (ICs)Linear - Amplifiers - Instrumentation, OP Amps, Buffer AmpsOPA2244UAG4
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OPA2244UAG4 - Texas Instruments

Manufacturer Part Number
OPA2244UAG4
Manufacturer
Texas Instruments
Allelco Part Number
98D-OPA2244UAG4
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
37,893 pcs available, New & Original
Parts Description
IC OPAMP GP 2 CIRCUIT 8SOIC
Package
8-SOIC
Data sheet
OPA2244UAG4.pdf

PCN Obsolescence/ EOL

EOL 22/May/2023.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 37893
  • Unit Price: $2.109
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $2.109 $2.11
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

OPA2244UAG4 Tech Specifications
Texas Instruments - OPA2244UAG4 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - OPA2244UAG4

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-SOIC
Slew Rate 0.1V/µs
Series MicroAmplifier™
Package / Case 8-SOIC (0.154", 3.90mm Width)
Package Tube
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) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN EAR99

Frequently Asked Questions(FAQ)

What is the recommended supply voltage range for stable operation of the OPA2244UAG4 in low-power battery-powered applications, and how does this impact system design constraints?
The OPA2244UAG4 supports a supply voltage span from 2.2 V to 36 V, making it suitable for both low-voltage battery systems and higher-voltage industrial environments. For battery-operated designs, operating near the lower end—such as between 2.7 V and 5 V—ensures compatibility with common Li-ion or alkaline cells while maintaining adequate headroom for signal integrity. However, designers must account for input offset voltage (700 µV) and input bias current (10 nA), which can introduce errors in precision measurements at very low supply voltages. This trade-off between power efficiency and accuracy should be evaluated based on application requirements.
How does the OPA2244UAG4 compare to the LM2904DT in terms of slew rate, power consumption, and suitability for audio signal conditioning circuits?
The OPA2244UAG4 features a slew rate of 0.1 V/µs and draws 40 µA per channel, whereas the LM2904DT typically has a slower slew rate (~0.5 V/µs across two channels but shared) and higher quiescent current (~0.7 mA). Despite the LM2904’s higher slew capability, the OPA2244 offers superior current drive (25 mA per channel vs. ~10 mA typical) and lower power consumption, making it more efficient for portable audio applications. However, the LM2904 may provide better dynamic performance in high-frequency switching scenarios due to its internal compensation. For audio preamplification requiring low noise and minimal quiescent power, the OPA2244UAG4 presents a compelling alternative.
Can the OPA2244UAG4 be used in single-supply configurations below 5 V, and what are the implications for input common-mode range and output swing?
Yes, the OPA2244UAG4 supports single-supply operation down to 2.2 V, enabling use in sub-5 V systems such as 3.3 V logic interfaces or battery-backed sensor nodes. In these configurations, the input common-mode range extends down to ground (or slightly below in some cases), allowing direct sensing of signals referenced to the negative rail. Output swing approaches the rails closely, though not fully rail-to-rail; expect approximately 100 mV dropout at 25 mA load. Designers should verify that critical signal levels remain within the amplifier’s linear region under minimum supply conditions to avoid distortion or clipping.
What are the key differences between the OPA2244UAG4 and the LT1211CS8#PBF in terms of bandwidth, offset drift, and long-term stability for precision data acquisition systems?
The OPA2244UAG4 offers a gain bandwidth product of 430 kHz and an input offset voltage of 700 µV, while the LT1211CS8#PBF provides significantly higher precision with offset voltage around 50 µV and much tighter drift characteristics (typically <1 µV/°C). Though the LT1211 excels in DC accuracy and thermal stability, the OPA2244UAG4 compensates with lower power draw and higher output current, making it preferable where moderate precision and energy efficiency are prioritized over absolute accuracy. For applications like strain gauge amplification or thermocouple conditioning requiring microvolt-level resolution, the LT1211 would be favored; otherwise, the OPA2244 remains viable for less stringent measurement tasks.
Is the OPA2244UAG4 suitable for driving capacitive loads directly, and if so, what stability considerations apply when using it in feedback-intensive topologies like active filters?
The OPA2244UAG4 can drive moderate capacitive loads, but without external isolation resistors, it may exhibit ringing or instability due to internal phase lag. When driving loads exceeding ~100 pF, especially in unity-gain buffer configurations, a series resistor (e.g., 10–100 Ω) at the output is strongly advised to dampen oscillations. In multi-stage filter designs, this precaution preserves stability across temperature and process variations. Failure to address capacitive loading can lead to transient overshoot or sustained oscillations, particularly at gains above unity.
How does the input bias current of the OPA2244UAG4 affect circuit performance in high-impedance sensor interfaces, and what mitigation strategies exist?
With an input bias current of 10 nA, the OPA2244UAG4 introduces minimal error in most applications, but in high-impedance sensor circuits (e.g., piezoelectric transducers or resistive bridges exceeding 1 MΩ), this current can cause significant voltage drop across source impedances. For example, a 10 nA bias current across a 1 MΩ source creates a 10 mV offset—comparable to the amplifier’s own 700 µV input offset. To mitigate, use guard rings, matched impedances, or select lower-bias-current devices if precision is paramount. Alternatively, AC-coupling with blocking capacitors can bypass DC bias effects while preserving signal fidelity.
Can the OPA2244UAG4 replace the TSM103WAID in a dual-channel instrumentation amplifier layout, and what layout or compensation changes might be needed?
While both are dual-opamp packages, the TSM103WAID is optimized for rail-to-rail input/output and typically operates at higher speeds and lower power than the OPA2244UAG4. Substituting the OPA2244 in place of the TSM103 may require reevaluation of headroom margins and frequency response, especially in differential amplifier topologies. The OPA2244 lacks rail-to-rail inputs, so input signals near the rails could clip earlier. Additionally, its lower slew rate may limit dynamic range in fast-changing differential signals. Layout symmetry and careful grounding remain essential regardless, but designers should simulate or prototype the substitution to validate performance under real-world conditions.
What environmental and regulatory factors should be considered when sourcing the OPA2244UAG4 for mass production in compliance with international standards?
The OPA2244UAG4 is RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99, facilitating global distribution without export restrictions. Its MSL rating of 3 indicates standard moisture sensitivity with a floor life of 168 hours, requiring dry storage and controlled handling during reflow soldering. Operating temperature range (-40°C to 85°C) ensures reliability in automotive and industrial edge applications. These attributes support compliance with ISO 14001 and IEC 62474 standards, reducing risk in regulated markets such as medical or aerospace peripherals where component traceability and environmental certification are mandatory.
How does the package size and pinout of the OPA2244UAG4 compare to other 8-pin SOIC variants, and what thermal management considerations apply in compact PCB layouts?
The OPA2244UAG4 uses the standard 8-SOIC package (3.9 mm width), matching mechanical footprints with similar op-amps like the LM2904DT. While small, its exposed pad (on G4 variant) aids heat dissipation under high-load conditions. However, with maximum output current limited to 25 mA per channel, thermal stress is generally manageable without heatsinks. In dense PCBs, ensure adequate copper pour and spacing around the IC to prevent localized heating during prolonged high-output operation. Avoid routing sensitive analog traces beneath the package to minimize coupling of conducted noise.
What are the typical applications where the OPA2244UAG4 outperforms single-channel amplifiers, and how does dual-channel integration reduce system complexity?
The dual-channel architecture of the OPA2244UAG4 is ideal for balanced signal paths such as bridge sensor conditioning, differential ADC drivers, or dual-channel audio preamps. By sharing power and ground planes and leveraging matched electrical characteristics between channels, system calibration simplifies and crosstalk is minimized. Compared to cascading two single-channel amplifiers, the integrated solution reduces board area by up to 40%, lowers parasitic inductance, and improves channel-to-channel skew—critical in precision instrumentation and communication line drivers.
How does the gain bandwidth product of 430 kHz influence the maximum usable closed-loop gain in a transimpedance amplifier configuration for photodiode detection?
In a transimpedance setup, the gain bandwidth product (GBW) constrains the achievable bandwidth relative to feedback resistance. For the OPA2244UAG4, a GBW of 430 kHz implies that a closed-loop gain of 100 corresponds to a bandwidth of approximately 4.3 kHz. Thus, selecting a feedback resistor that yields high transimpedance gain may sacrifice bandwidth. Designers must balance sensitivity (higher Rf) against speed (lower Rf) based on photodiode capacitance and required response time. Compensation techniques such as adding a capacitor in parallel with Rf can stabilize the circuit but further reduce bandwidth.
Are there any known limitations in using the OPA2244UAG4 for driving inductive loads, and what protection circuitry is recommended to prevent damage?
Driving inductive loads directly is not recommended due to the risk of back-EMF damaging the output stage. If necessary, include a flyback diode across the load or use an RC snubber network to suppress voltage spikes. Additionally, consider limiting output current through series resistance or implementing current-foldback protection. Given the OPA2244UAG4’s 25 mA output capability, sustained short-circuit conditions may still exceed safe operating limits. External current-limiting components or optoisolators provide safer alternatives in motor control or relay driver applications.
How does the low quiescent current of the OPA2244UAG4 benefit battery life in IoT sensor nodes, and what design practices maximize this advantage?
Drawing only 40 µA total (20 µA per channel), the OPA2244UAG4 enables months of operation on coin-cell batteries in duty-cycled sensor nodes. To maximize battery life, operate in shutdown modes when inactive, use low-duty-cycle wake-up timers, and ensure minimal leakage paths in surrounding circuitry. Pairing with ultra-low-power microcontrollers and minimizing static current in passive components further extends runtime. This efficiency makes the OPA2244UAG4 well-suited for remote environmental monitoring or wearable health devices where energy harvesting or frequent battery replacement is impractical.
What role does the MicroAmplifier™ series branding imply about the OPA2244UAG4’s intended use cases compared to general-purpose op-amps from other manufacturers?
The MicroAmplifier™ designation signals TI’s focus on ultra-low-power, cost-effective solutions for space-constrained embedded systems. Unlike high-performance amplifiers optimized for precision or speed, the OPA2244UAG4 emphasizes power efficiency, simplicity, and integration density. It targets applications where moderate bandwidth and accuracy suffice—such as sensor interfaces, basic signal buffering, and control loop compensation—rather than RF amplification or high-fidelity audio. This positioning reflects a deliberate trade-off favoring deployment flexibility over peak performance.
Can the OPA2244UAG4 be safely operated in parallel for increased output current, and what synchronization or mismatch risks arise?
Parallel operation of the OPA2244UAG4 units is possible but not recommended without additional current-sharing circuitry. Without precise matching of output impedances and timing alignment, one device may carry disproportionate current, leading to uneven aging and potential failure. Furthermore, phase differences can create circulating currents and instability. Instead, use a dedicated current-boosting stage or choose a higher-current amplifier if increased drive is required. The internal architecture lacks built-in paralleling support, making manual balancing both technically challenging and unreliable in production environments.
How does the input offset voltage of 700 µV affect calibration requirements in gain stages, and under what conditions might auto-zero or chopper stabilization become necessary?
A 700 µV input offset necessitates either software trimming or hardware nulling in high-gain applications (e.g., >100x) where even small offsets amplify into significant output errors. For instance, a 100x gain stage introduces a 70 mV DC error, which may saturate downstream stages. While the OPA2244 lacks internal calibration features, external techniques like potentiometer-based offset adjustment or using a digital potentiometer in the feedback path can correct this. Only in extremely sensitive systems—such as medical instrumentation—would alternative architectures like chopper-stabilized amps be justified due to their negligible offset.
What precautions should be taken when substituting the OPA2244UAG4 in legacy designs originally using the LM258ADT, given differences in pin compatibility and performance?
Although both are 8-pin SOIC devices, the LM258ADT is a single-channel part, whereas the OPA2244UAG4 contains two independent channels. Substitution requires verifying that unused inputs are properly terminated (e.g., tied to mid-supply or grounded) to prevent latch-up or oscillation. Additionally, the LM258 typically runs at higher power (~0.7 mA) and may have different open-loop gain characteristics. Ensure that the replacement maintains sufficient phase margin in feedback loops, especially at unity gain. Simulation or breadboard testing is advised before full migration.
How does the operating temperature range of -40°C to 85°C influence selection for outdoor or automotive environments, and what derating practices are recommended?
The extended commercial temperature range supports deployment in industrial controls, consumer electronics, and mild automotive subsystems. However, continuous operation near 85°C accelerates junction aging and degrades long-term reliability. Derate output current by 20–30% at elevated temperatures, and avoid storing the device in environments exceeding 125°C (absolute max). For harsh environments, consider encapsulants or conformal coatings, but ensure they do not impede heat transfer. Thermal profiling during burn-in testing helps validate stability under worst-case thermal cycling conditions.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments OPA2244UAG4

Product Attribute OPA2244UA/2K5G4 OPA2244PAG4 OPA2244EA/2K5G4 OPA2244UA
Part Number OPA2244UA/2K5G4 OPA2244PAG4 OPA2244EA/2K5G4 OPA2244UA
Manufacturer Luminary Micro / Texas Instruments Luminary Micro / Texas Instruments Texas Instruments Burr Brown
Voltage - Supply Span (Min) - - - -
Voltage - Supply Span (Max) - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Series - - - -
Current - Input Bias - - - -
Slew Rate - - - -
Current - Supply - - - -
Number of Circuits - - - -
Amplifier Type - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Output Type - Current - Unbuffered Voltage - Buffered -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Gain Bandwidth Product - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Base Product Number - DAC34H84 MAX500 ADS62P42
Current - Output / Channel - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Voltage - Input Offset - - - -

OPA2244UAG4 Datasheet PDF

Download OPA2244UAG4 pdf datasheets and Texas Instruments documentation for OPA2244UAG4 - Texas Instruments.

PCN Obsolescence/ EOL
EOL 22/May/2023.pdf

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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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OPA2244UAG4 Image

OPA2244UAG4

Texas Instruments
98D-OPA2244UAG4

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