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Texas Instruments OPA244NA/250
- Part No.:
- OPA244NA/250
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA244NA/250.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,677
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Product details
Overview
OPA244NA/250 from Texas Instruments (formerly Burr-Brown) is a single-channel, micropower, rail-to-rail input operational amplifier in SOT-23-5 package. It delivers 430kHz gain-bandwidth, 50µA/channel quiescent current, and operates from +2.2V to +36V single supply - ideal for battery-powered instrumentation and portable sensing circuits requiring low power and wide voltage range.
For engineers reviewing the OPA244NA/250 datasheet, OPA244NA/250 pinout, OPA244NA/250 application, or OPA244NA/250 equivalent, key selection criteria include its guaranteed 50µA IQ over –40°C to +85°C, input common-mode range extending to V–, unity-gain stability, and SOT-23-5 footprint compatibility with space-constrained PCB layouts.
Technical Context
The OPA244NA/250 employs a CMOS input stage enabling rail-to-rail input operation down to V– and high input impedance (10⁹ Ω || 2 pF), while maintaining low input bias current (–25 nA max). Its internal compensation ensures unity-gain stability across the full supply range without external components.
It features robust overload recovery (8 µs), low input offset voltage (±1.5 mV typ), and excellent PSRR (50 µV/V) - making it suitable for precision DC-coupled signal conditioning in noisy industrial or portable environments where supply rejection and thermal drift matter.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Quiescent Current | 50 µA per channel - enables multi-year battery life in always-on sensor nodes. |
| Gain-Bandwidth Product | 430 kHz - supports medium-speed signal amplification (e.g., 100 Hz–10 kHz sensor outputs) with stable unity-gain configuration. |
| Supply Voltage Range | +2.2V to +36V single supply - eliminates need for dual supplies in industrial sensors or automotive auxiliary rails. |
| Input Common-Mode Range | 0 V to (V+) – 0.9 V - includes ground, enabling direct interfacing with single-supply microcontrollers and ADCs. |
| Input Offset Voltage | ±1.5 mV typical - ensures < ±15 mV error at 10× gain, suitable for 12-bit precision systems. |
| Slew Rate | +0.16 V/µs - limits large-signal response time to ~62.5 µs for 10 V step, appropriate for slow-varying process signals. |
| Operating Temperature | –40°C to +85°C specified - qualified for industrial ambient conditions without derating. |
Pinout & Package
SOT-23-5 surface-mount package (JEDEC MO-178, TI DBV0005A), 1.45 mm max height, 2.9 mm × 1.6 mm footprint, thermal resistance θJA = 200°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No connect | Unused terminal; must be left floating or grounded per layout best practice - no internal connection. |
| 2 (V–) | Negative supply | Ground or negative rail reference; supports single-supply operation when tied to system GND. |
| 3 (Out) | Output | Amplified output node; capable of sourcing +12 mA / sinking –25 mA into 20 kΩ load. |
| 4 (–In) | Inverting input | Differential input node; high-impedance CMOS input with ±25 nA bias current. |
| 5 (+In) | Non-inverting input | Differential input node; common-mode range extends to V–, enabling true single-supply sensor interface. |
Key Features
| Feature | Design Value |
|---|---|
| MicroPower Operation | 50 µA IQ enables >10-year battery life in coin-cell–powered IoT endpoints. |
| Rail-to-Rail Input | Input common-mode range includes V–, eliminating level-shifting for ground-referenced sensors. |
| Unity-Gain Stable | No external compensation required - simplifies design and reduces BOM count in gain-of-1 buffers. |
| Wide Supply Range | +2.2V to +36V operation supports legacy 24V industrial rails and modern low-voltage wearables. |
| Low Input Offset Drift | ±4 µV/°C max ensures minimal calibration drift over temperature in precision measurement systems. |
Applications
| Battery-Powered Instrumentation | Portable Medical Sensors |
|---|---|
Use Scenario: Handheld multimeter front-end amplifying mV-level thermocouple or shunt voltage signals. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with rail-to-rail input, buffering sensor output before 12-bit SAR ADC. Use Value: 50 µA IQ extends AA battery life to >2 years; ±1.5 mV VOS ensures <0.1% reading error at 10× gain. | Use Scenario: Pulse oximeter analog front-end measuring weak photodiode currents via transimpedance configuration. IC Role / Device Role / Timing Role: Low-noise, low-IQ transimpedance amplifier with 22 nV/√Hz voltage noise density. Use Value: 430 kHz GBW supports fast pulse response; 0.4 µVP-P 0.1–10 kHz noise preserves SpO₂ signal fidelity. |
| Industrial Current Sensing | PCMCIA Card Signal Conditioning |
Use Scenario: High-side or low-side battery pack current monitoring using shunt resistor feedback. IC Role / Device Role / Timing Role: Differential amplifier configured for 10× gain in Figure 1 of datasheet, rejecting common-mode bus voltage. Use Value: CMRR ≥84 dB at ±18V supply rejects >99.9% of 24V common-mode swing; 8 µs overload recovery prevents latch-up during fault events. | Use Scenario: Signal level-shifting and filtering for legacy PCMCIA card I/O lines operating at 3.3V or 5V. IC Role / Device Role / Timing Role: Single-supply op amp providing gain, offset correction, and drive capability for 10–100 kHz analog data channels. Use Value: SO-8 and SOT-23-5 packaging options allow drop-in replacement in compact card-edge designs; 200°C/W θJA enables thermal margin in confined slots. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2442IDR | Higher IQ (125 µA), lower GBW (220 kHz), same SOT-23-5 package. | Less suitable for ultra-low-power battery lifetime targets; better for higher-precision offset (±1.2 mV) at cost of current. | Select TLV2442IDR only if lower VOS outweighs 2.5× higher IQ in short-duration duty-cycle applications. |
| OPA344UA/2K5 | Lower IQ (45 µA), narrower supply (2.7–5.5V), SO-8 only - no SOT-23-5 option. | Restricted to 3.3V/5V systems; unsuitable for 24V industrial rails or wide-input-range sensors. | Choose OPA344UA/2K5 only for 3.3V embedded systems where board space allows SO-8 and supply is fixed. |
Compared with TLV2442IDR and OPA344UA/2K5, the OPA244NA/250 uniquely balances ultra-low IQ (50 µA), wide supply (2.2–36V), and SOT-23-5 packaging - making it the sole choice for long-life, multi-rail, space-constrained industrial sensing.
Availability
OPA244NA/250 is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical sensors, and industrial current sensing requiring stable component supply across extended temperature and voltage ranges.
Supply support for OPA244NA/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 maintains its precision analog portfolio, emphasizing high-performance, low-power, and robust industrial-grade signal chain solutions.
The OPA244NA/250 belongs to TI's MicroAmplifier™ series, designed specifically for space- and power-constrained applications such as portable test equipment, battery management, and sensor signal conditioning where micropower operation and rail-to-rail input are critical.
FAQ
What is the maximum operating supply voltage for the OPA244NA/250?
The OPA244NA/250 supports a maximum supply voltage of +36V on the V+ pin relative to V–, with absolute maximum ratings specifying V+ to V– ≤ 36V. It operates reliably across the full +2.2V to +36V single-supply range, and its specifications - including gain-bandwidth and quiescent current - are guaranteed throughout this span per the datasheet.
Does the OPA244NA/250 require external compensation for unity-gain stability?
No, the OPA244NA/250 is internally compensated and unity-gain stable. The datasheet explicitly states "unity-gain stable" and shows stable phase margin in the open-loop gain vs frequency plot. No external capacitors or resistors are needed for stable operation at gain = 1, simplifying circuit design and reducing component count in buffer applications.
Can the OPA244NA/250 drive capacitive loads, and what is its recommended maximum?
The OPA244NA/250 can drive moderate capacitive loads, but stability degrades above ~100 pF without isolation resistance. Typical performance curves show overshoot increasing with capacitance; for reliable operation with >100 pF loads (e.g., long traces or ADC inputs), a 10–100 Ω series resistor at the output is recommended. The device does not specify a hard CLOAD limit but references "see typical curve" for guidance.
What is the input common-mode voltage range of the OPA244NA/250, and why does it matter?
The OPA244NA/250 has an input common-mode voltage range of 0 V to (V+) – 0.9 V, which includes the negative rail (V–, typically ground in single-supply use). This rail-to-rail input capability allows direct interfacing with ground-referenced sensors (e.g., thermistors, bridge outputs) without level-shifting circuitry - reducing design complexity and error sources in low-voltage, single-supply systems.
Is the OPA244NA/250 RoHS-compliant and lead-free?
Yes, the OPA244NA/250 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 JEDEC MSL Level-2-260°C-1 year moisture sensitivity rating - confirming full compliance with EU RoHS Directive 2011/65/EU and suitability for lead-free reflow processes.
OPA244NA/250 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MicroAmplifier™
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.16V/µs
- Gain Bandwidth Product:
- 430 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 nA
- Voltage - Input Offset:
- 700 µV
- Current - Supply:
- 50µA
- 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:
- SOT-23-5
OPA244NA/250 FAQ
1.How can I place an order for OPA244NA/250 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA244NA/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 OPA244NA/250 reliable?
The price and inventory of OPA244NA/250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA244NA/250 is usually 5 days.
3.What payment methods are accepted for OPA244NA/250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA244NA/250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA244NA/250?
OPA244NA/250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA244NA/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 OPA244NA/250?
For technical support, including OPA244NA/250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA244NA/250 requirements.
6.How does Aetrix verify that OPA244NA/250 is sourced from the original manufacturer or authorized distributors?
All OPA244NA/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 OPA244NA/250 meets industry standards.
7.What is the process for return or replacement of OPA244NA/250?
All OPA244NA/250 units undergo pre-shipment inspection (PSI). If there is an issue with OPA244NA/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 OPA244NA/250 part is unused and in its original packaging.
Return procedure for OPA244NA/250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA244NA/250 Tags
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