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Texas Instruments OPA2244EA/250
- Part No.:
- OPA2244EA/250
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2244EA/250.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,318
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Product details
Overview
OPA2244EA/250 from Texas Instruments (formerly Burr-Brown) is a dual, rail-to-rail input/output, micropower operational amplifier in an MSOP-8 package. It delivers 430kHz gain-bandwidth, 50µA per amplifier quiescent current, and operates from single supplies as low as +2.2V up to +36V - ideal for battery-powered portable instrumentation and space-constrained sensor signal conditioning.
For engineers reviewing the OPA2244EA/250 datasheet, OPA2244EA/250 pinout, OPA2244EA/250 application, or OPA2244EA/250 equivalent, key selection criteria include its guaranteed 72dB CMRR over temperature, channel separation of 140dB, unity-gain stability, and operation across –40°C to +85°C without phase inversion or overload recovery issues.
Technical Context
The OPA2244EA/250 uses a proprietary bipolar input stage enabling rail-to-rail input common-mode range (0V to V+–0.9V) and output swing to within 0.2V of rails under 20kΩ load. Its 22nV/√Hz voltage noise and 40fA/√Hz current noise support precision DC-coupled sensing at ultra-low power.
Designed for single-supply operation in portable systems, it features independent dual-amplifier circuitry with no crosstalk degradation even under overload, and maintains stable performance across its full ±1.1V to ±18V dual-supply or +2.2V to +36V single-supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 430kHz - supports stable closed-loop gain ≥1 with bandwidth sufficient for slow-sensing loops (e.g., thermistor, strain gauge). |
| Quiescent Current per Channel | 50µA - enables multi-year battery life in coin-cell–powered devices like portable medical sensors or IoT node front-ends. |
| Input Offset Voltage | ±1.5mV (typ) - ensures ≤15mV error in 10V full-scale measurement without trimming. |
| Common-Mode Rejection Ratio | 72dB (min, –40°C to +85°C) - rejects supply ripple and shared-noise coupling in single-supply systems. |
| Output Voltage Swing | 0.2V above V– and (V+)–0.75V - delivers >95% of rail-to-rail dynamic range into 20kΩ loads. |
| Channel Separation | 140dB - prevents signal bleed between dual channels in differential sensor pairs or dual-path signal chains. |
| Slew Rate | +0.16V/µs - limits large-signal settling to <150µs for 10V step, suitable for moderate-speed data acquisition. |
Pinout & Package
OPA2244EA/250 is housed in an 8-pin MSOP (VSSOP, DGK) package - 3.0mm × 3.0mm footprint, 0.65mm pitch, 1.1mm max height - optimized for high-density PCB layouts in portable equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V– | Negative supply rail connection; referenced for all internal biasing and output swing. |
| 2 | +In A | Non-inverting input of Amplifier A; accepts signals from 0V to (V+)–0.9V. |
| 3 | –In A | Inverting input of Amplifier A; used for feedback or differential input configuration. |
| 4 | Out A | Amplifier A output; drives loads down to 20kΩ while maintaining rail-to-rail swing. |
| 5 | Out B | Amplifier B output; electrically isolated from Out A with 140dB channel separation. |
| 6 | –In B | Inverting input of Amplifier B; fully independent, no interaction with Amplifier A. |
| 7 | +In B | Non-inverting input of Amplifier B; identical input range and impedance to +In A. |
| 8 | V+ | Positive supply rail; supports operation from +2.2V to +36V with no derating. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables direct interfacing with low-voltage ADCs and microcontrollers without level-shifting circuitry. |
| Unity-gain stable | Eliminates need for external compensation in buffer, follower, or gain-of-1 configurations. |
| No phase inversion on overdrive | Prevents catastrophic latch-up or signal corruption when inputs exceed common-mode range. |
| Specified over –40°C to +85°C | Guarantees performance in industrial and automotive cabin environments without design margin penalties. |
| MicroSIZE MSOP-8 package | Reduces board area by >50% vs SO-8, critical for PCMCIA cards and wearable sensor modules. |
Applications
| Battery-Powered Sensor Front-End | Portable Medical Instrumentation |
|---|---|
|
Use Scenario: Signal conditioning for thermistor, RTD, or bridge-based pressure sensors in handheld diagnostic tools. IC Role / Device Role / Timing Role: Dual-channel amplifier providing gain, offset correction, and rail-to-rail buffering before 12-bit SAR ADC sampling. Use Value: 50µA/channel quiescent current extends AA-battery life beyond 2 years; 140dB channel separation isolates reference and signal paths. |
Use Scenario: Low-power ECG electrode amplification and lead-off detection in portable patient monitors. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier (configured as difference pair) with high CMRR and low input bias current. Use Value: 72dB min CMRR suppresses 50/60Hz mains interference; rail-to-rail input accommodates electrode DC offsets up to ±300mV. |
| PCMCIA Card Analog Interface | Battery Pack Fuel Gauging |
|
Use Scenario: Signal routing and level translation for analog I/O on legacy PCMCIA expansion cards. IC Role / Device Role / Timing Role: Dual op-amp serving as voltage follower and programmable gain stage for sensor inputs and DAC outputs. Use Value: MSOP-8 footprint fits tight card-edge spacing; 430kHz GBW supports 10ksps sampling with <0.01% settling. |
Use Scenario: High-side and low-side current sensing in smart Li-ion battery packs for coulomb counting. IC Role / Device Role / Timing Role: Dual amplifier implementing bidirectional current sense with matched gain paths for charge/discharge monitoring. Use Value: Independent dual channels enable simultaneous high-side (V+ referenced) and low-side (ground-referenced) sensing without cross-talk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Zero-drift architecture (0.02µV/°C drift), higher IQ (17µA), lower noise (0.7µVpp), but narrower supply range (1.8V–5.5V). | Preferred for ultra-precision DC measurements below 100Hz where offset drift dominates error budget. | Select OPA2333AIDR only if sub-µV drift and 1.8V operation are required; OPA2244EA/250 better suits wide-supply, cost-sensitive portable designs. |
| MCP6022-I/SN | Higher IQ (100µA), wider GBW (1MHz), lower VOS (250µV max), but reduced CMRR (70dB typ) and no guaranteed rail-to-rail input. | Suitable for higher-speed signal chains where power efficiency is secondary to bandwidth. | Choose MCP6022-I/SN when >500kHz bandwidth is needed; OPA2244EA/250 remains optimal for micropower + rail-to-rail + robust CMRR trade-off. |
Compared with OPA2333AIDR and MCP6022-I/SN, the OPA2244EA/250 uniquely balances ultra-low quiescent current (50µA), rail-to-rail I/O, 430kHz bandwidth, and guaranteed 72dB CMRR across –40°C to +85°C - making it the most versatile dual op-amp for general-purpose battery-powered analog signal conditioning.
Availability
OPA2244EA/250 is available at Aetrix Electronics and suitable for battery-powered systems, portable instrumentation, and PCMCIA card interfaces requiring stable component supply with RoHS-compliant, green packaging and traceable lot control.
Supply support for OPA2244EA/250 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 continues its legacy of precision analog ICs, delivering high-performance, reliable components for industrial, automotive, and medical applications.
The OPA2244EA/250 belongs to TI's MicroAmplifier™ series - designed specifically for space- and power-constrained applications where micropower operation, rail-to-rail performance, and robustness across temperature and supply variation are essential.
FAQ
What is the maximum operating supply voltage for the OPA2244EA/250?
The OPA2244EA/250 supports a maximum supply voltage of +36V on single-supply operation or ±18V on dual-supply operation. Absolute maximum ratings specify 36V between V+ and V– pins, with input voltages limited to (V–) – 0.3V to (V+) + 0.3V. Exceeding these limits risks permanent damage. The OPA2244EA/250 maintains full specified performance across its entire +2.6V to +36V range.
Does the OPA2244EA/250 require external compensation for unity-gain stability?
No, the OPA2244EA/250 is internally compensated and unity-gain stable. It does not require external capacitors or resistors to maintain stability in voltage-follower, non-inverting, or inverting configurations with gain ≥1. This simplifies layout and reduces BOM count - a key advantage confirmed in the device's typical performance curves and applications information section.
What is the thermal resistance (θJA) of the OPA2244EA/250 in its MSOP-8 package?
The OPA2244EA/250 in the MSOP-8 (DGK) package has a junction-to-ambient thermal resistance (θJA) of 200°C/W, as specified in the official datasheet. This value assumes standard JEDEC high-K test board conditions. Actual board-level θJA will vary based on copper pour, airflow, and layer stackup - designers should verify thermal performance under real operating conditions using the 50µA/channel dissipation.
Can the OPA2244EA/250 drive capacitive loads without oscillation?
The OPA2244EA/250 can drive moderate capacitive loads, but stability depends on load magnitude and closed-loop gain. Typical performance curves show overshoot increases with capacitance - e.g., ~20% overshoot at 100pF with G = +1 and RL = ∞. For loads >100pF, isolation resistors (e.g., 10–50Ω in series with the output) are recommended. The OPA2244EA/250 is not characterized for direct heavy capacitive loading like LCD drivers.
Is the OPA2244EA/250 pin-compatible with other dual op-amps in MSOP-8 packages?
The OPA2244EA/250 follows the industry-standard MSOP-8 pinout (V–, +In A, –In A, Out A, Out B, –In B, +In B, V+), matching TI's own OPA2333, MCP6022, and many generic dual op-amps. However, functional compatibility - including supply range, input range, and output drive - must be verified separately. Pinout alignment alone does not guarantee drop-in replacement.
OPA2244EA/250 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MicroAmplifier™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-VSSOP
OPA2244EA/250 FAQ
1.How can I place an order for OPA2244EA/250 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2244EA/250 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 OPA2244EA/250 reliable?
The price and inventory of OPA2244EA/250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2244EA/250 is usually 5 days.
3.What payment methods are accepted for OPA2244EA/250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2244EA/250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2244EA/250?
OPA2244EA/250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2244EA/250 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 OPA2244EA/250?
For technical support, including OPA2244EA/250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2244EA/250 requirements.
6.How does Aetrix verify that OPA2244EA/250 is sourced from the original manufacturer or authorized distributors?
All OPA2244EA/250 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 OPA2244EA/250 meets industry standards.
7.What is the process for return or replacement of OPA2244EA/250?
All OPA2244EA/250 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2244EA/250, 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 OPA2244EA/250 part is unused and in its original packaging.
Return procedure for OPA2244EA/250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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