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Texas Instruments OPA2244UAG4
- Part No.:
- OPA2244UAG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2244UAG4.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,984
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Product details
Overview
OPA2244UAG4 from Texas Instruments (formerly Burr-Brown) is a dual, rail-to-rail input/output, micropower operational amplifier in SOIC-8 package. It delivers 430kHz gain-bandwidth, 50µA/channel quiescent current, and operates from single supply (2.2V to 36V) or dual supply (±1.1V to ±18V), making it ideal for battery-powered instrumentation and portable sensing circuits.
For engineers reviewing the OPA2244UAG4 datasheet, OPA2244UAG4 pinout, OPA2244UAG4 application, or OPA2244UAG4 equivalent, key selection criteria include its ultra-low IQ, wide supply range, ground-sensing input common-mode range, and guaranteed performance across –40°C to +85°C - critical for long-life, low-maintenance embedded analog front-ends.
Technical Context
The OPA2244UAG4 integrates two fully independent amplifiers with no crosstalk coupling, enabling simultaneous signal conditioning in space-constrained dual-channel systems. Its unity-gain stable architecture avoids phase inversion and maintains stability under overload, even when driven beyond rails.
Input stage design includes rail-to-rail common-mode range (0 V to V+ − 0.9 V), high CMRR (72 dB min), and low input bias current (–25 nA typ), supporting precision DC-coupled measurement in single-supply configurations such as current sensing and sensor interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Quiescent Current | 50 µA per amplifier - enables multi-year operation on coin-cell batteries in always-on monitoring nodes. |
| Gain-Bandwidth Product | 430 kHz - supports accurate amplification of low-frequency sensor signals (e.g., thermocouples, strain gauges) without instability. |
| Supply Voltage Range | +2.2 V to +36 V (single) or ±1.1 V to ±18 V (dual) - eliminates need for voltage regulators in industrial 24V or automotive 12V systems. |
| Input Offset Voltage | ±1.5 mV (typ) - ensures <1% error in 100mV full-scale analog inputs without trimming. |
| Common-Mode Input Range | 0 V to (V+) − 0.9 V - allows direct interface to ground-referenced sensors (e.g., shunt-based current sensing) without level-shifting. |
| Slew Rate | +0.16 V/µs - sufficient for settling 10V steps within 150 µs at 0.01% accuracy, suitable for slow-control loop feedback paths. |
| Operating Temperature | –40°C to +85°C (specified), –55°C to +125°C (operational) - qualified for industrial and automotive under-hood environments. |
Pinout & Package
OPA2244UAG4 is housed in an 8-pin SOIC (SO-8) surface-mount package per JEDEC MS-012AA, with 1.27 mm pitch and 1.75 mm max height. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input A | High-impedance differential input node for Channel A; accepts signals down to ground in single-supply mode. |
| 2 | Non-Inverting Input A | High-impedance differential input node for Channel A; supports rail-to-rail common-mode input range. |
| 3 | Output A | Class AB output stage capable of sourcing 12 mA / sinking 25 mA; swings within 0.75 V of rails into 20 kΩ load. |
| 4 | V− | Negative supply terminal; tied to ground in single-supply operation; must be bypassed with 0.01 µF ceramic capacitor. |
| 5 | V+ | Positive supply terminal; accepts up to +36 V; requires local 0.01 µF ceramic decoupling near pin. |
| 6 | Non-Inverting Input B | Independent high-impedance input for Channel B; electrically isolated from Channel A to prevent crosstalk (>140 dB). |
| 7 | Inverting Input B | Independent high-impedance input for Channel B; identical electrical characteristics to Pin 1 but fully isolated circuitry. |
| 8 | Output B | Second independent output stage; shares same supply pins (4 & 5) but has no internal coupling to Output A. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output swing | Enables full dynamic range utilization in low-voltage single-supply systems (e.g., 3.3V IoT nodes) without external level shifters. |
| Unity-gain stable with no phase inversion | Eliminates risk of latch-up or oscillation during overdrive or input transients - critical for robust sensor protection circuits. |
| 140 dB channel separation | Ensures <0.0001% signal coupling between channels, preserving integrity in dual-path signal chains like differential ADC drivers. |
| Specified performance from +2.6V to +36V | One set of electrical specs applies across entire operating range - simplifies design validation and reduces test coverage requirements. |
| ESD rating: 2000 V HBM | Provides built-in handling robustness for manual assembly and field-replaceable modules without additional protection components. |
Applications
| Battery-Powered Instrumentation | Low-Side Current Sensing |
|---|---|
Use Scenario: Portable multimeter front-end amplifying microvolt-level thermocouple outputs while running on AA batteries for >1 year. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with rail-to-rail input enabling zero-offset measurement referenced to system ground. Use Value: 50 µA/channel IQ extends battery life; ±1.5 mV offset ensures <0.5% measurement error without calibration. | Use Scenario: Real-time monitoring of battery pack discharge current using a 10 mΩ shunt resistor in consumer power banks. IC Role / Device Role / Timing Role: Dual-opamp configured as differential amplifier (Channel A) and reference buffer (Channel B) for offset cancellation. Use Value: Ground-sensing input range eliminates need for high-side sensing complexity; 430 kHz GBW supports fast transient detection during load switching. |
| PCMCIA Card Analog Interface | Industrial Sensor Signal Conditioning |
Use Scenario: Compact data acquisition card for legacy laptop expansion slots requiring low-profile analog front-end with minimal power draw. IC Role / Device Role / Timing Role: Dual-channel signal conditioner for piezoresistive pressure sensors and RTD bridges, sharing supply and layout space. Use Value: SOIC-8 footprint fits tight PCB real estate; independent amplifier cores prevent cross-talk between pressure and temperature channels. | Use Scenario: 4–20 mA transmitter module converting 0–100 mV bridge outputs from load cells in factory-floor weighing systems. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier core (with external resistors) providing high CMRR and low drift before DAC-driven current loop. Use Value: 72 dB min CMRR rejects 24V AC line noise; –40°C to +85°C spec ensures reliability in uncontrolled industrial enclosures. |
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 (0.02 µV/°C drift vs. ±4 µV/°C); higher IQ (17 µA vs. 50 µA); lower offset (±2 µV vs. ±1.5 mV) | Better for sub-µV precision DC apps (e.g., medical ECG front-end); less suitable for ultra-low-power battery lifetime optimization | Select OPA2244UAG4 when micropower priority outweighs ultra-low drift; choose OPA2333AIDR only if <1 µV total offset drift required over temperature. |
| LMV358IDR | Higher IQ (80 µA/channel); narrower supply range (2.7V–5.5V); lower GBW (1 MHz); no guaranteed rail-to-rail input | Optimized for 3.3V logic-compatible systems; unsuitable for 24V industrial or wide-range battery operation | OPA2244UAG4 is preferred for designs needing >5V supply headroom or ground-sensing capability; LMV358IDR fits cost-sensitive, fixed 3.3V consumer apps only. |
Compared with OPA2333AIDR and LMV358IDR, the OPA2244UAG4 uniquely balances ultra-low quiescent current (50 µA), wide 2.2V–36V supply support, and guaranteed rail-to-rail input operation - making it the only choice for long-life, wide-input-range, dual-channel analog signal conditioning where precision drift is secondary to power efficiency.
Availability
OPA2244UAG4 is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable equipment, and industrial sensor signal conditioning requiring stable component supply and long-term lifecycle continuity.
Supply support for OPA2244UAG4 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 maintains its precision analog portfolio with rigorous qualification standards and long-term product commitments.
The OPA2244UAG4 belongs to TI's MicroAmplifier™ series, designed specifically for space- and power-constrained applications where low IQ, wide supply range, and rail-to-rail operation are essential - including portable test gear, energy harvesting interfaces, and distributed industrial sensors.
FAQ
What is the maximum supply voltage rating for the OPA2244UAG4?
The OPA2244UAG4 supports a maximum supply voltage of +36 V in single-supply mode or ±18 V in dual-supply mode. Absolute maximum ratings specify V+ to V− ≤ 36 V, with input voltages limited to (V−) − 0.3 V to (V+) + 0.3 V. Exceeding these limits risks permanent damage. The OPA2244UAG4 is fully specified from +2.6 V to +36 V, ensuring consistent performance across this full range.
Does the OPA2244UAG4 support true rail-to-rail input operation?
Yes, the OPA2244UAG4 features rail-to-rail input common-mode range extending from 0 V to (V+) − 0.9 V - meaning it accepts input signals at ground potential in single-supply configurations. This is confirmed in the datasheet's "INPUT VOLTAGE RANGE" section and enables direct interfacing with ground-referenced sources like shunt resistors and bridge sensors without level-shifting circuitry.
What is the typical quiescent current per amplifier in the OPA2244UAG4?
The typical quiescent current per amplifier in the OPA2244UAG4 is 50 µA at +25°C and 50 µA to 63 µA across the full –40°C to +85°C temperature range. This value is measured with zero output load and is critical for battery-powered applications - enabling multi-year operation on standard alkaline or lithium primary cells in always-on monitoring systems.
Can the OPA2244UAG4 drive capacitive loads without oscillation?
The OPA2244UAG4 is unity-gain stable and can drive moderate capacitive loads, but performance degrades above ~100 pF without isolation resistance. Typical curves show overshoot increases significantly at 1 nF, and the datasheet recommends adding a small series resistor (e.g., 10–50 Ω) between the output and capacitive load to maintain stability. For >1 nF loads, consider using a dedicated buffer or selecting a higher-drive op amp.
Is the OPA2244UAG4 RoHS-compliant and lead-free?
Yes, the OPA2244UAG4 is RoHS-compliant and lead-free. Per TI's packaging documentation, it carries "Green (RoHS & no Sb/Br)" eco plan designation with NIPDAU (nickel-palladium-gold) lead finish and complies with JEDEC MSL Level-3 moisture sensitivity classification. The "G4" suffix explicitly denotes green, lead-free, and halogen-free packaging conforming to current EU RoHS directives.
OPA2244UAG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MicroAmplifier™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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-SOIC
OPA2244UAG4 FAQ
1.How can I place an order for OPA2244UAG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2244UAG4 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 OPA2244UAG4 reliable?
The price and inventory of OPA2244UAG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2244UAG4 is usually 5 days.
3.What payment methods are accepted for OPA2244UAG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2244UAG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2244UAG4?
OPA2244UAG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2244UAG4 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 OPA2244UAG4?
For technical support, including OPA2244UAG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2244UAG4 requirements.
6.How does Aetrix verify that OPA2244UAG4 is sourced from the original manufacturer or authorized distributors?
All OPA2244UAG4 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 OPA2244UAG4 meets industry standards.
7.What is the process for return or replacement of OPA2244UAG4?
All OPA2244UAG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2244UAG4, 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 OPA2244UAG4 part is unused and in its original packaging.
Return procedure for OPA2244UAG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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