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Texas Instruments OPA2244UA/2K5
- Part No.:
- OPA2244UA/2K5
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2244UA/2K5.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,850
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Product details
Overview
OPA2244UA/2K5 from Texas Instruments (formerly Burr-Brown) is a dual, rail-to-rail input/output, micro-power operational amplifier in an SOIC-8 package. It delivers 430kHz gain-bandwidth, 50µA per amplifier quiescent current, ±1.1V to ±18V dual-supply or +2.2V to +36V single-supply operation, and operates across –40°C to +85°C - ideal for battery-powered instrumentation and portable medical sensors.
For engineers reviewing the OPA2244UA/2K5 datasheet, OPA2244UA/2K5 pinout, OPA2244UA/2K5 application, or OPA2244UA/2K5 equivalent, key selection criteria include ultra-low IQ, wide supply range, unity-gain stability, ground-sensing input common-mode range, and guaranteed performance over temperature without derating.
Technical Context
The OPA2244UA/2K5 implements a bipolar input stage with JFET-like input impedance and rail-to-rail output swing, enabling accurate signal conditioning near supply rails. Its fully independent dual-amplifier architecture ensures 140dB channel separation and eliminates crosstalk in multi-channel sensing.
It features no phase inversion under overdrive and maintains stable unity-gain operation without external compensation. Input common-mode range extends to V–, supporting low-side current sensing; output swings within 0.75V of rails into 20kΩ loads, preserving dynamic range in low-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Quiescent Current | 50 µA per amplifier - enables >1-year battery life in coin-cell-powered IoT nodes |
| Gain-Bandwidth Product | 430 kHz - supports DC to audio-frequency signal amplification with <150 µs settling (0.01%) |
| Supply Range | +2.2V to +36V single or ±1.1V to ±18V dual - interoperable across industrial, automotive, and legacy 24V systems |
| Input Offset Voltage | ±1.5 mV (typ), ±2 mV (max) - sufficient for 12-bit precision in sensor front-ends without trimming |
| Common-Mode Rejection | 72 dB (min) - rejects noise in unshielded PCB traces near power rails |
| Output Swing | (V+) – 0.75V / 0.1V above V– - delivers full-scale output in 3.3V or 5V single-supply data acquisition |
| Input Voltage Noise | 22 nV/√Hz at 1 kHz - preserves SNR in high-gain thermistor or strain gauge interfaces |
Pinout & Package
OPA2244UA/2K5 is housed in an 8-pin SOIC (SO-8) surface-mount package per JEDEC MS-012AA, with 1.27 mm pitch, 4.9 mm × 3.9 mm body, and 1.75 mm max height. Thermal resistance θJA = 150°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input A | High-impedance differential input for Amplifier A; accepts signals down to V– |
| 2 | Non-Inverting Input A | High-impedance differential input for Amplifier A; common-mode range includes ground |
| 3 | Output A | Rail-to-rail output capable of sourcing/sinking ±12 mA; drives 20kΩ load to within 0.75V of V+ |
| 4 | V– | Negative supply pin; shared by both amplifiers; must be bypassed with 0.01 µF ceramic capacitor |
| 5 | Inverting Input B | Independent input for Amplifier B; no crosstalk with Channel A even under overload |
| 6 | Non-Inverting Input B | Independent input for Amplifier B; identical electrical specs to Pin 2 |
| 7 | Output B | Independent rail-to-rail output; matches Output A performance and drive capability |
| 8 | V+ | Positive supply pin; shared by both amplifiers; requires local 0.01 µF ceramic decoupling |
Key Features
| Feature | Design Value |
|---|---|
| MicroPower Operation | 50 µA per amplifier enables always-on monitoring in energy-harvesting and wearable devices |
| Rail-to-Rail Input/Output | Input common-mode includes V–; output swings to within 0.1V of V– and 0.75V of V+ - maximizes usable signal range |
| Unity-Gain Stable | No external compensation required - simplifies design for gain-of-1 buffers and active filters |
| High Channel Separation | 140 dB isolation between amplifiers prevents interference in dual-sensor or differential measurement systems |
| Wide Temperature Range | Specified from –40°C to +85°C - suitable for outdoor industrial enclosures and automotive cabin modules |
Applications
| Battery-Powered Instrumentation | Portable Medical Sensors |
|---|---|
Use Scenario: Precision analog front-end for handheld blood glucose meters and pulse oximeters powered by CR2032 cells. IC Role / Device Role / Timing Role: Dual-channel signal conditioning: one amplifier for transducer biasing and filtering, the other for ratiometric ADC driver. Use Value: 50 µA IQ extends battery life beyond 2 years; rail-to-rail I/O captures full sensor dynamic range at 3.0V supply. | Use Scenario: Low-noise amplification of ECG electrode signals in compact wearable patches. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with high CMRR and low input bias current to minimize electrode polarization error. Use Value: 72 dB CMRR suppresses 50/60 Hz mains interference; 22 nV/√Hz noise preserves diagnostic signal fidelity. |
| PCMCIA Data Acquisition Cards | Low-Side Current Monitoring |
Use Scenario: Analog signal conditioning on legacy PCMCIA cards used in field-deployed environmental monitors. IC Role / Device Role / Timing Role: Dual op-amp providing programmable gain and offset adjustment before 12-bit SAR ADC sampling. Use Value: SOIC-8 footprint fits tight card real estate; 430 kHz GBW supports 10 kSPS sampling with adequate settling margin. | Use Scenario: Bidirectional current sensing in battery management systems for 12V lead-acid and Li-ion packs. IC Role / Device Role / Timing Role: High-side and low-side current sense amplifier pair with matched gain and offset for shunt-based measurement. Use Value: Input common-mode down to V– enables direct low-side shunt connection; 140 dB channel separation avoids cross-talk between charge/discharge paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Zero-drift architecture; 0.02 µV/°C offset drift vs. ±4 µV/°C for OPA2244UA/2K5; higher IQ (17 µA vs. 50 µA) | Better DC accuracy for long-term sensor calibration; less suitable for ultra-low-power standby modes | Select when offset drift dominates error budget over quiescent power |
| LMV358IDR | Higher IQ (150 µA); lower GBW (1 MHz); rail-to-rail output only (not input); CMRR 65 dB (min) | Cost-optimized general-purpose use; insufficient for ground-referenced inputs or low-noise precision sensing | Select for non-critical consumer applications where cost outweighs precision and power constraints |
Compared with OPA2333AIDR and LMV358IDR, the OPA2244UA/2K5 uniquely balances ultra-low quiescent current, rail-to-rail input capability, and robust 430 kHz bandwidth - making it optimal for space-constrained, battery-operated precision analog systems requiring no zero-drift complexity or excessive power draw.
Availability
OPA2244UA/2K5 is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical sensors, and PCMCIA data acquisition cards requiring stable component supply and long-lifecycle support.
Supply support for OPA2244UA/2K5 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
Texas Instruments acquired Burr-Brown in 2000 and integrates its precision analog portfolio into TI's high-performance signal chain solutions.
The OPA2244 series belongs to TI's MicroAmplifier™ family, designed specifically for ultra-low-power, wide-supply-range precision amplification in portable and energy-sensitive applications.
FAQ
What is the maximum operating supply voltage for OPA2244UA/2K5?
The OPA2244UA/2K5 supports a maximum supply voltage of +36V in single-supply mode or ±18V in dual-supply mode. Absolute maximum ratings specify 36V between V+ and V–, with input voltages limited to (V–) – 0.3V to (V+) + 0.3V. Exceeding these limits risks permanent damage. The OPA2244UA/2K5 maintains full specified performance across its entire +2.6V to +36V operating range.
Does OPA2244UA/2K5 require external compensation for unity-gain stability?
No, the OPA2244UA/2K5 is internally compensated and unity-gain stable. It does not require external capacitors or resistors to maintain stability at gain = 1. This simplifies circuit design for buffer configurations and eliminates risk of oscillation due to layout parasitics. The OPA2244UA/2K5 achieves this while delivering 430kHz gain-bandwidth and <150 µs 0.01% settling time.
Can OPA2244UA/2K5 drive capacitive loads directly?
The OPA2244UA/2K5 can drive moderate capacitive loads (≤100 pF) without instability, as verified in typical performance curves showing overshoot <10% at CL = 100 pF. For larger loads, a small series resistor (e.g., 10–50 Ω) between output and capacitance is recommended to isolate the reactive load and preserve phase margin. The OPA2244UA/2K5's output stage is rated for continuous short-circuit to ground.
What is the input common-mode voltage range of OPA2244UA/2K5?
The input common-mode voltage range of the OPA2244UA/2K5 extends from V– to (V+) – 0.9V, explicitly including ground in single-supply operation. This allows direct interfacing with ground-referenced sensors and low-side current shunts. The OPA2244UA/2K5 maintains specified input bias current and offset voltage across this full range, unlike many op-amps that degrade near supply rails.
Is OPA2244UA/2K5 RoHS-compliant and lead-free?
Yes, the OPA2244UA/2K5 is RoHS-compliant and lead-free, with "Green (RoHS & no Sb/Br)" eco plan designation and NIPDAU lead finish. It meets JEDEC MSL Level-3 (260°C peak, 168-hour floor life) for SOIC packaging. The device marking "OPA2244UA" appears on the top surface, and reel packaging follows standard tape-and-reel specifications (2500 units/reel, 330 mm diameter).
OPA2244UA/2K5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MicroAmplifier™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 0.1V/µs
- Gain Bandwidth Product:
- 430 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 nA
- Voltage - Input Offset:
- 700 µV
- Current - Supply:
- 40µA (x2 Channels)
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 2.2 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA2244UA/2K5 FAQ
1.How can I place an order for OPA2244UA/2K5 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2244UA/2K5 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 OPA2244UA/2K5 reliable?
The price and inventory of OPA2244UA/2K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2244UA/2K5 is usually 5 days.
3.What payment methods are accepted for OPA2244UA/2K5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2244UA/2K5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2244UA/2K5?
OPA2244UA/2K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2244UA/2K5 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 OPA2244UA/2K5?
For technical support, including OPA2244UA/2K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2244UA/2K5 requirements.
6.How does Aetrix verify that OPA2244UA/2K5 is sourced from the original manufacturer or authorized distributors?
All OPA2244UA/2K5 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 OPA2244UA/2K5 meets industry standards.
7.What is the process for return or replacement of OPA2244UA/2K5?
All OPA2244UA/2K5 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2244UA/2K5, 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 OPA2244UA/2K5 part is unused and in its original packaging.
Return procedure for OPA2244UA/2K5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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