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Texas Instruments OPA2244EA/250G4
- Part No.:
- OPA2244EA/250G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2244EA/250G4.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,345
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Product details
Overview
OPA2244EA/250G4 from Texas Instruments (formerly Burr-Brown) is a dual, rail-to-rail input/output, micropower operational amplifier in an 8-pin MSOP 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. It is used in battery-powered instrumentation for precision signal conditioning.
For engineers reviewing the OPA2244EA/250G4 datasheet, OPA2244EA/250G4 pinout, OPA2244EA/250G4 application, or OPA2244EA/250G4 equivalent, key selection criteria include micropower consumption, wide supply range, unity-gain stability, channel separation (140dB), and guaranteed performance over temperature without derating.
Technical Context
The OPA2244EA/250G4 employs a bipolar input stage with JFET-enhanced biasing to achieve ultra-low input bias current (–10nA typ) while maintaining low input offset voltage (±0.7mV typ) and high CMRR (72dB min). Its fully independent dual-amplifier architecture ensures minimal crosstalk and robust overload recovery (8µs).
It features rail-to-rail input common-mode range (including ground) and rail-to-rail output swing (to within 0.75V of rails at 20kΩ load), enabling direct interfacing with low-voltage ADCs and microcontrollers in single-supply systems. The device is unity-gain stable and requires no external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 430kHz - supports stable closed-loop operation up to ~400kHz at G=1, suitable for sensor amplification and anti-alias filtering. |
| Quiescent Current per Channel | 50µA - enables multi-year battery life in coin-cell–powered devices like portable gas sensors and wearable health monitors. |
| Input Offset Voltage | ±0.7mV (typ) - ensures <1mV error in 12-bit systems with 3.3V full-scale, reducing calibration burden. |
| Supply Voltage Range | +2.2V to +36V (single) or ±1.1V to ±18V (dual) - interoperable across industrial 24V rails, automotive 12V, and ultra-low-power 3V IoT nodes. |
| Channel Separation | 140dB - prevents signal coupling between channels in dual-sensor front-ends (e.g., differential pressure + temperature sensing). |
| Common-Mode Rejection | 72dB (min) - maintains accuracy when amplifying small signals riding on noisy power rails or ground offsets. |
| Output Voltage Swing | (V+) – 0.75V / 0.1V (vs ground, RL = 20kΩ) - delivers >3.0Vpp output from 3.3V supply, maximizing dynamic range for SAR ADC drivers. |
Pinout & Package
OPA2244EA/250G4 is housed in an 8-pin VSSOP (DGK) package - 3.0mm × 3.0mm, 0.65mm pitch, 1.1mm max height - optimized for space-constrained PCB layouts in portable equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V– (Negative Supply) | Ground or negative rail connection; must be bypassed with 0.01µF ceramic capacitor near pin. |
| 2 | Inverting Input B | High-impedance node for feedback network; accepts common-mode voltages from V– to (V+) – 0.9V. |
| 3 | Non-Inverting Input B | High-impedance node for reference or sensor input; shares same input specs as Pin 2. |
| 4 | Output B | Push-pull output capable of sourcing +12mA / sinking –25mA; drives 20kΩ loads to within 0.75V of rails. |
| 5 | Output A | Independent output for second channel; electrically isolated from Output B with 140dB separation. |
| 6 | Non-Inverting Input A | First channel's positive input; identical electrical characteristics to Pin 3. |
| 7 | Inverting Input A | First channel's negative input; matches Pin 2 in bias current (–10nA typ) and noise performance. |
| 8 | V+ (Positive Supply) | Primary power rail; supports wide-range operation and must be decoupled locally. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 50µA per amplifier enables always-on monitoring in energy-harvesting and battery-backed systems without compromising bandwidth. |
| Rail-to-Rail Input/Output | Input includes ground; output swings to within 0.75V of V+ and 0.1V of V– - maximizes usable signal range in low-voltage designs. |
| Unity-Gain Stable | No external compensation required - simplifies layout and reduces BOM count in transimpedance and buffer applications. |
| High Channel Separation | 140dB isolation prevents cross-talk between dual channels in simultaneous-sampling sensor interfaces. |
| Wide Temperature Range | Specified from –40°C to +85°C - qualified for industrial control, automotive body electronics, and outdoor instrumentation. |
Applications
| Battery-Powered Instrumentation | Portable Medical Devices |
|---|---|
Use Scenario: Precision amplification of thermistor or RTD signals in handheld multimeters and data loggers powered by AA batteries. IC Role / Device Role / Timing Role: Dual-channel signal conditioner: one op amp buffers reference voltage, the other amplifies sensor output with gain and offset correction. Use Value: 50µA quiescent current extends battery life beyond 2 years; rail-to-rail I/O eliminates level-shifting components. | Use Scenario: Front-end amplification of ECG electrode signals in portable heart rate monitors and Holter recorders. IC Role / Device Role / Timing Role: Dual-op-amp instrumentation topology: first stage provides high-Z differential gain; second stage filters and drives ADC input. Use Value: 0.4µVp-p input noise (0.1–10kHz) preserves microvolt-level cardiac signals; 140dB channel separation avoids crosstalk between limb leads. |
| Low-Side Current Sensing | PCMCIA Card Signal Conditioning |
Use Scenario: Monitoring battery discharge current in smart battery packs using shunt resistor and single-supply microcontroller. IC Role / Device Role / Timing Role: Single-supply difference amplifier configured with matched resistors to reject common-mode voltage from shunt. Use Value: Input common-mode range includes V– allows direct connection to shunt grounded at battery negative terminal; ±0.7mV offset minimizes current measurement error. | Use Scenario: Analog signal routing and level adaptation in PCMCIA cards for industrial data acquisition modules. IC Role / Device Role / Timing Role: Dual-channel buffer and gain stage for analog inputs/outputs compliant with PCMCIA JEIDA v3.0 voltage limits. Use Value: Wide +2.2V to +36V supply range accommodates both 3.3V and 5V PCMCIA host buses; MSOP-8 footprint fits tight card-edge layouts. |
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 vs OPA2244EA/250G4's ±4µV/°C; higher IQ (17µA vs 50µA); lower GBW (350kHz). | Better DC accuracy for long-term sensor drift compensation; less suitable for AC-coupled or wideband applications. | Select OPA2333AIDR when µV-level offset stability over temperature is critical; choose OPA2244EA/250G4 for wider bandwidth and lower cost in general-purpose micropower use. |
| LMV358IDR | Higher IQ (80µA/channel); lower GBW (1MHz); rail-to-rail output only (not input); CMRR 65dB (min) vs 72dB. | Acceptable for non-precision, cost-sensitive consumer applications where input rail-to-rail is not required. | Choose LMV358IDR for high-volume, low-cost designs with relaxed DC specs; retain OPA2244EA/250G4 when ground-referenced inputs or tighter CMRR are needed. |
Compared with OPA2333AIDR and LMV358IDR, the OPA2244EA/250G4 uniquely balances 430kHz bandwidth, true rail-to-rail input/output, and 50µA quiescent current - making it optimal for battery-powered instrumentation requiring both precision and responsiveness without zero-drift complexity or excessive power draw.
Availability
OPA2244EA/250G4 is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical devices, low-side current sensing, and PCMCIA card signal conditioning requiring stable component supply and RoHS-compliant packaging.
Supply support for OPA2244EA/250G4 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, emphasizing high-performance, low-power, and industrial-grade reliability.
The OPA2244EA/250G4 belongs to TI's MicroAmplifier™ series, designed specifically for space- and power-constrained applications such as portable test equipment, sensor interfaces, and battery-operated industrial controls.
FAQ
What is the maximum operating temperature range for the OPA2244EA/250G4?
The OPA2244EA/250G4 is specified over –40°C to +85°C for full parameter compliance. It can operate continuously from –55°C to +125°C, though certain parameters like input offset voltage and CMRR are not guaranteed outside the –40°C to +85°C range. This extended operating range supports deployment in harsh environments such as under-hood automotive or industrial enclosures.
Does the OPA2244EA/250G4 require external compensation for unity-gain stability?
No, the OPA2244EA/250G4 is internally compensated and unity-gain stable. It does not require external capacitors or resistors for stability in G=1 configurations. This simplifies design in buffer, voltage-follower, and transimpedance amplifier circuits - confirmed by open-loop gain/phase plots showing >45° phase margin at unity gain across temperature and supply conditions.
What is the meaning of the "G4" suffix in OPA2244EA/250G4?
The "G4" suffix in OPA2244EA/250G4 indicates a green, lead-free, halogen-free packaging variant compliant with JEDEC MSL Level-2 moisture sensitivity and TI's RoHS + no Sb/Br requirements. It uses NiPdAu lead finish and is supplied in tape-and-reel format (250 units per reel), identical in electrical and thermal performance to the base OPA2244EA/250 part.
Can the OPA2244EA/250G4 drive capacitive loads directly?
The OPA2244EA/250G4 can drive moderate capacitive loads (≤100pF) without instability, as shown in typical overshoot curves. For larger loads (>100pF), a series resistor (e.g., 10–50Ω) should be placed between the output and capacitance to maintain phase margin. Driving heavy capacitive loads directly may cause ringing or oscillation due to its 430kHz GBW and uncompensated output stage.
How does the channel separation of 140dB benefit dual-channel designs using the OPA2244EA/250G4?
The 140dB channel separation in the OPA2244EA/250G4 ensures that signals applied to one amplifier do not couple into the other via substrate or power rails. In practice, this enables simultaneous high-gain amplification of two independent sensors (e.g., pressure and humidity) on the same die without measurable crosstalk - critical for accurate differential measurements and multi-parameter portable analyzers.
OPA2244EA/250G4 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/250G4 FAQ
1.How can I place an order for OPA2244EA/250G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2244EA/250G4 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/250G4 reliable?
The price and inventory of OPA2244EA/250G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2244EA/250G4 is usually 5 days.
3.What payment methods are accepted for OPA2244EA/250G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2244EA/250G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2244EA/250G4?
OPA2244EA/250G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2244EA/250G4 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/250G4?
For technical support, including OPA2244EA/250G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2244EA/250G4 requirements.
6.How does Aetrix verify that OPA2244EA/250G4 is sourced from the original manufacturer or authorized distributors?
All OPA2244EA/250G4 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/250G4 meets industry standards.
7.What is the process for return or replacement of OPA2244EA/250G4?
All OPA2244EA/250G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2244EA/250G4, 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/250G4 part is unused and in its original packaging.
Return procedure for OPA2244EA/250G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA2244EA/250G4 Tags
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