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HomeProductsIntegrated Circuits (ICs)Linear - Amplifiers - Instrumentation, OP Amps, Buffer AmpsOPA2244UA
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OPA2244UA - Burr Brown

Manufacturer Part Number
OPA2244UA
Manufacturer
Burr Brown
Allelco Part Number
32D-OPA2244UA
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
9,190 pcs available, New & Original
Parts Description
OPA2244 MICROPOWER SINGLE-SUPPLY
Package
8-SOIC
Data sheet
-
RoHs Status
 
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In stock: 9190

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Specifications

OPA2244UA Tech Specifications
Burr Brown - OPA2244UA technical specifications, attributes, parameters and parts with similar specifications to Burr Brown - OPA2244UA

Product Attribute Attribute Value
Manufacturer Burr Brown
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 Bulk
Product Attribute Attribute Value
Output Type -
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
Amplifier Type General Purpose

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
ECCN EAR99

Parts Introduction

Manufacturer Part Number

OPA2244UA

Manufacturer

Burr Brown

Introduction

Dual-channel operational amplifier (op-amp)

Designed for general-purpose amplification applications

Product Features and Performance

Wide supply voltage range of 2.2V to 36V

High gain bandwidth product of 430 kHz

Low input offset voltage of 700 μV

Low input bias current of 10 nA

Slew rate of 0.1 V/μs

Output current capability of 25 mA per channel

Wide operating temperature range of -40°C to 85°C

Product Advantages

Versatile performance for various amplifier applications

Suitable for battery-powered and low-power designs

Stable operation across a wide range of supply voltages

Low noise and distortion for high-precision signal processing

Key Technical Parameters

Manufacturer Part Number: OPA2244UA

Package: 8-SOIC (0.154", 3.90mm Width)

Mounting Type: Surface Mount

Number of Circuits: 2

Gain Bandwidth Product: 430 kHz

Voltage Supply Span (Min/Max): 2.2V to 36V

Current Supply: 40 μA per channel

Slew Rate: 0.1 V/μs

Voltage Input Offset: 700 μV

Amplifier Type: General Purpose

Current Output / Channel: 25 mA

Current Input Bias: 10 nA

Quality and Safety Features

Reliable performance across wide temperature range

Designed and manufactured to high quality standards

Compatibility

Widely compatible with various electronic circuits and systems

Application Areas

Suitable for a wide range of general-purpose amplification applications

Useful in battery-powered and low-power electronic devices

Product Lifecycle

Currently in active production

Replacement or upgrade options available if needed

Key Reasons to Choose This Product

Versatile performance for diverse amplifier applications

Stable operation across a wide range of supply voltages

Low noise and distortion for high-precision signal processing

Wide operating temperature range for reliable performance

Designed and manufactured to high quality standards

Frequently Asked Questions(FAQ)

How does the OPA2244UA compare to the LM258ADT in terms of power consumption and input offset voltage for low-voltage battery-powered applications?
The OPA2244UA consumes a total supply current of 40 µA across its two channels, making it significantly more efficient than the LM258ADT, which typically draws around 6 mA per channel under similar conditions. This difference results in a five-order-of-magnitude improvement in quiescent current, which is critical for extending battery life in portable devices. Additionally, the OPA2244UA has an input offset voltage of 700 µV, while the LM258ADT typically exhibits an offset of approximately 2 mV. Although both are within general-purpose amplifier ranges, the lower offset and bias current of the OPA2244UA make it better suited for precision sensing applications where drift and error must be minimized over time.
What design considerations should be taken into account when using the OPA2244UA with a 2.2 V supply rail in a signal conditioning circuit?
When operating the OPA2244UA near its minimum supply of 2.2 V, designers must ensure that input common-mode voltage remains within the specified range, typically from a few tens of millivolts below the negative rail up to near the positive rail, depending on output swing requirements. The device’s rail-to-rail input capability allows operation very close to both rails, but headroom degrades as supply voltage decreases. Output swing may also be limited; at 2.2 V, peak-to-peak output might only reach approximately 1.8 V due to internal dropouts. Careful layout and decoupling are essential to maintain stability given the modest slew rate of 0.1 V/µs, which can limit performance in high-dynamic-range applications.
Why might an engineer choose the OPA2244UA over other dual amplifiers like the LT1211CS8#PBF despite its obsolete status?
While the OPA2244UA is now obsolete, it was designed as part of TI’s MicroAmplifier series with ultra-low power and wide supply voltage operation—features still relevant in modern low-power designs. Compared to the LT1211CS8#PBF, which offers higher bandwidth (up to several MHz) but consumes significantly more current (hundreds of microamps), the OPA2244UA provides superior efficiency at the cost of speed. For sensor interfacing or data acquisition systems where bandwidth is secondary to power budget, the OPA2244UA remains a viable legacy option if availability permits substitution analysis.
How does the gain-bandwidth product of the OPA2244UA affect closed-loop performance in non-inverting configurations?
With a gain-bandwidth product of 430 kHz, the OPA2244UA can support closed-loop gains up to approximately 430 when unity-gain bandwidth is considered. In a non-inverting configuration with a gain of 10, the usable bandwidth would be roughly 43 kHz. This finite bandwidth introduces phase lag and roll-off, which can impact transient response in feedback loops. Designers must ensure loop compensation accounts for this limitation, especially in control systems or active filters where stability margins depend on frequency response characteristics.
Can the OPA2244UA drive capacitive loads effectively without additional buffering?
The OPA2244UA has moderate output drive capability (25 mA per channel), but driving large capacitive loads directly can lead to instability due to insufficient phase margin. Without external compensation, capacitive loads above tens of nanofarads may cause ringing or oscillation, particularly at higher closed-loop gains. It is generally recommended to isolate the amplifier from the load with a small series resistor (e.g., 10–50 Ω) or use a buffer stage to improve stability. This precaution becomes more important as gain increases or supply voltage drops toward the minimum threshold.
What are the implications of the OPA2244UA’s moisture sensitivity level (MSL 3) during PCB assembly?
As an MSL 3 component, the OPA2244UA requires handling according to standard reflow soldering guidelines with a maximum floor life of 168 hours before baking if exposed to ambient humidity. Prolonged exposure beyond this window risks popcorning during thermal processing due to moisture absorption. Manufacturers must track storage conditions and follow JEDEC J-STD-033 protocols, including baking prior to reflow if shelf life exceeds 168 hours unconditioned. Failure to adhere increases risk of package cracking and latent reliability issues.
Is the OPA2244UA suitable for use in automotive-grade temperature environments?
No, the OPA2244UA is rated for industrial temperatures from -40°C to +85°C, which excludes full automotive AEC-Q100 qualification requiring extended temperature ranges up to 125°C. While it may function adequately in some vehicle subassemblies, mission-critical automotive applications such as engine control units or safety systems demand components tested to stricter environmental standards. Substitution with automotive-grade alternatives like the OPA2333 or ADA4096 would be necessary for compliance.
How does the input bias current of the OPA2244UA influence front-end resistor selection in high-impedance sensor interfaces?
The input bias current of 10 nA introduces voltage offsets across source impedances. For example, in a transimpedance amplifier configuration with a 1 MΩ feedback resistor, a 10 nA bias current produces a 10 mV error—significant in low-level signal chains. To mitigate this, feedback resistors should not exceed practical limits unless compensated by techniques like T-networks or chopper-stabilized topologies. Alternatively, choosing amplifiers with picoampere-level bias currents would yield better accuracy, though at higher cost or complexity.
What role does the slew rate of 0.1 V/µs play in PWM reconstruction or audio signal amplification with the OPA2244UA?
The slew rate limits how quickly the output can respond to rapid changes in input voltage. In PWM reconstruction, where filtered outputs must track fast edge transitions, the 0.1 V/µs rate caps maximum output slope, potentially distorting high-frequency content. For instance, a 10 V step would require 100 µs to settle fully—too slow for many digital-to-analog conversion post-processing stages. Similarly, in audio applications, this slew rate supports only frequencies below about 16 kHz (assuming 20 Vpp swing), making the OPA2244UA unsuitable for high-fidelity analog audio amplification without careful signal shaping.
Are there known stability issues when cascading multiple stages using the OPA2244UA in multi-stage filter designs?
Cascading multiple OPA2244UA stages without proper isolation can degrade overall phase margin due to cumulative pole interactions, especially in high-gain topologies. Each stage contributes gain and phase shift, and with a gain-bandwidth product of only 430 kHz, the second and third poles appear relatively close to the unity-gain frequency. Compensation networks, such as adding a capacitor across feedback resistors or using lower gains per stage, are often required to maintain stability. Simulation tools like SPICE are strongly advised before implementation.
How does the package type (8-SOIC) impact thermal performance compared to SOIC-WR or DIP variants?
The 8-SOIC package (3.9 mm width) offers compact size but limited surface area for heat dissipation compared to larger packages like SOIC-WR or DIP-8. With a typical junction-to-air thermal resistance (θJA) around 150°C/W, power dissipation above 5 mW can cause measurable self-heating. In continuous high-output-current scenarios (e.g., driving inductive loads), supplemental cooling or derating may be necessary. However, for most signal-conditioning roles consuming <10 mA, thermal concerns are minimal and the small footprint favors dense PCB layouts.
Can the OPA2244UA be used in single-supply applications above 2.2 V without modification?
Yes, the OPA2244UA supports single-supply operation from 2.2 V up to 36 V, making it ideal for single-battery systems (e.g., 3 V or 5 V rails). Inputs can accept voltages down to ground, and outputs swing close to both rails, provided sufficient headroom exists. Bias the inputs through a resistive divider if referencing signals near zero volts. Ensure decoupling capacitors (e.g., 100 nF ceramic) are placed near V+ and GND pins to maintain PSRR and prevent oscillation during transients.
What precautions apply when substituting the OPA2244UA with TSM103WAID in legacy designs?
The TSM103WAID is a CMOS-input operational amplifier with similar pinout and supply range but different noise, offset, and bias current characteristics. Its input offset voltage is typically ±1 mV (peak-to-peak), worse than the OPA2244UA’s 700 µV. Also, input bias current may be higher (~50 pA nominal but with greater variability). Verify that noise spectral density, DC accuracy, and dynamic range meet original specifications. Layout parasitics and feedback network values must be reevaluated, as impedance matching affects performance differently across devices.
Does the OPA2244UA require external compensation when used in unity-gain buffer mode?
Generally, no—the OPA2244UA is internally compensated for unity-gain stability across its entire operating range. However, performance can degrade with long cables or heavy capacitive loads (>100 nF) even in unity-gain configuration due to inadequate phase margin. If instability occurs, a small series resistor (10–33 Ω) at the output followed by the load helps damp oscillations. Always validate behavior with actual test fixtures, as board layout inductance and capacitance can unmask hidden instabilities.
How does the RoHS3 compliance of the OPA2244UA affect global regulatory adherence?
RoHS3 compliance ensures the absence of restricted substances including lead, mercury, cadmium, hexavalent chromium, PBB, PBDE, and four phthalates (DEHP, BBP, DBP, DIBP). This aligns the OPA2244UA with international environmental directives such as EU RoHS 2011/65/EU and China’s Management Methods for Solid Waste. Export-sensitive markets, including those under U.S. ECCC regulations, recognize RoHS3 status, facilitating smoother supply chain integration despite the part’s obsolete classification.
What impact does the 430 kHz gain-bandwidth product have on active filter cutoff frequencies?
In a second-order active low-pass filter using the OPA2244UA, the achievable cutoff frequency is constrained by the gain-bandwidth product. For a gain of 1, the theoretical cutoff could approach 430 kHz, but real-world parasitics and op-amp limitations reduce usable bandwidth. Practical designs rarely exceed 300–350 kHz cutoff for reliable performance. Higher-order filters or sharper roll-offs require lower gains or alternative amplifiers with higher GBW, trading off speed for selectivity in applications like anti-aliasing or EMI filtering.
Should the OPA2244UA be avoided in high-impedance differential amplifier configurations due to leakage concerns?
Not inherently, but high-impedance nodes near inputs increase susceptibility to leakage and electromagnetic interference. The 10 nA bias current couples capacitively with stray board capacitance, creating time-varying errors in slow-response systems. Guard rings connected to the input signal via low-impedance paths can reduce leakage currents. Alternatively, using FET-input op-amps reduces bias current by orders of magnitude, improving long-term stability in pH meters, strain gauges, or medical instrumentation.
How does the obsolete status of the OPA2244UA influence lifecycle planning and obsolescence management strategies?
Obsolete parts like the OPA2244UA require proactive lifecycle management, including stockpiling, authorized distributor partnerships, and early substitution analysis. Engineers should assess substitutes (e.g., OPA2333, OPA2188, ADA4096) for compatibility in form, fit, and function, focusing on supply current, offset, bandwidth, and package. Document rationale for continued use versus redesign, especially in non-replaceable end products. Maintaining traceability and avoiding single-sourcing risks is critical to prevent production halts due to inventory depletion.

Parts with Similar Specifications

The three parts on the right have similar specifications to Burr Brown OPA2244UA

Product Attribute OPA2244UA OPA2244UA/2K5G4 OPA2244UAG4 OPA2244UA/2K5
Part Number OPA2244UA OPA2244UA/2K5G4 OPA2244UAG4 OPA2244UA/2K5
Manufacturer Texas Instruments Luminary Micro / Texas Instruments Texas Instruments Texas Instruments
Current - Input Bias - - - -
Gain Bandwidth Product - - - -
Number of Circuits - - - -
Voltage - Supply Span (Min) - - - -
Current - Supply - - - -
Slew Rate - - - -
Output Type - Current - Unbuffered Voltage - Buffered -
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)
Series - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Current - Output / Channel - - - -
Amplifier Type - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Voltage - Input Offset - - - -
Voltage - Supply Span (Max) - - - -
Mounting Type - Surface Mount Through Hole Surface Mount

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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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OPA2244UA

Burr Brown
32D-OPA2244UA

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