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Texas Instruments OPA2244PA
- Part No.:
- OPA2244PA
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
OPA2244PA.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,034
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Product details
Overview
OPA2244PA from Texas Instruments (formerly Burr-Brown) is a dual, rail-to-rail input/output, micro-power operational amplifier in an 8-pin DIP package. It delivers 430kHz gain-bandwidth, 50µA/channel quiescent current, and operates from single supplies as low as +2.2V up to +36V - ideal for battery-powered instrumentation and portable analog signal conditioning.
For engineers reviewing the OPA2244PA datasheet, OPA2244PA pinout, OPA2244PA application, or OPA2244PA 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, space-constrained industrial and medical sensor front-ends.
Technical Context
The OPA2244PA integrates two fully independent amplifiers with no crosstalk coupling, enabling simultaneous high-precision signal paths without interaction-even under overload or saturation. Its unity-gain stable architecture eliminates phase inversion and supports direct use in transimpedance, current-sense, and buffer configurations without external compensation.
Input stage design includes rail-to-rail common-mode range (0V to V+–0.9V), CMRR ≥72dB (typ. 98dB), and PSRR ≥50dB over 0.1Hz–100kHz. Output swing reaches within 0.75V of rails into 20kΩ loads, supporting accurate signal translation in single-supply systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Quiescent Current | 50 µA per amplifier - enables >1-year battery life in coin-cell-powered sensors. |
| Gain-Bandwidth Product | 430 kHz - sufficient for DC–200Hz sensor signal conditioning with <1% gain error. |
| Supply Voltage Range | +2.2V to +36V single supply - accommodates 3V Li-ion, 5V logic, and 24V industrial rails without level-shifting. |
| Input Offset Voltage | ±1.5 mV max (TYP) - ensures ≤150 µV error in 100mV full-scale current-sense applications. |
| Common-Mode Input Range | 0V to (V+)–0.9V - allows direct ground-referenced sensing in low-side current monitoring. |
| Output Voltage Swing | 0.2V to (V+)–0.75V into 20kΩ - preserves dynamic range for ADC interfacing at 3.3V or 5V. |
| Slew Rate | +0.16 V/µs - supports 10V step settling in ≤150 µs at 0.01% accuracy. |
Pinout & Package
OPA2244PA is housed in an industry-standard 8-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole mounting. Thermal resistance θJA = 100°C/W enables operation up to +85°C ambient without heatsinking.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Out A | Amplifier A output - drives external load or feedback network; rail-to-rail capable. |
| 2 | –In A | Inverting input of Amplifier A - high-impedance node (10⁹Ω || 2pF); accepts differential or single-ended signals. |
| 3 | +In A | Non-inverting input of Amplifier A - same impedance as Pin 2; supports ground-referenced inputs. |
| 4 | V– | Negative supply pin - connects to ground (single supply) or negative rail (dual supply). |
| 5 | +In B | Non-inverting input of Amplifier B - electrically isolated from Amplifier A; enables dual-path designs. |
| 6 | –In B | Inverting input of Amplifier B - identical specs to Pin 2; no crosstalk with Amplifier A. |
| 7 | Out B | Amplifier B output - independently buffered; usable for reference buffering or second-stage gain. |
| 8 | V+ | Positive supply pin - accepts +2.2V to +36V; bypass with 0.01µF ceramic capacitor recommended. |
Key Features
| Feature | Design Value |
|---|---|
| MicroPower Operation | 50 µA per channel enables multi-year operation on CR2032 batteries in wireless sensor nodes. |
| Rail-to-Rail Input | Input common-mode range includes ground - eliminates need for level-shifting in single-supply current-sense circuits. |
| Unity-Gain Stable | No external compensation required - simplifies layout and reduces BOM count in buffer and gain stages. |
| Low Input Bias Current | –25 nA max - minimizes voltage error across high-impedance source networks (e.g., pH electrodes). |
| High Channel Separation | 140 dB - prevents signal leakage between dual channels in precision dual-path measurement systems. |
Applications
| Battery-Powered Instrumentation | Portable Medical Sensors |
|---|---|
|
Use Scenario: Precision analog front-end for handheld blood glucose meters and pulse oximeters operating from single AA/AAA cells. IC Role / Device Role / Timing Role: Dual-channel signal conditioning: one amp buffers reference voltage, the other amplifies transducer output with gain and offset correction. Use Value: 50µA/channel IQ extends battery life beyond 12 months; rail-to-rail input captures full sensor dynamic range without external biasing. |
Use Scenario: Low-noise amplification of ECG/EEG electrode signals in wearable diagnostic patches. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer with high CMRR and low IB to preserve weak biopotential signals. Use Value: 72dB min CMRR rejects power-line interference; 0.4µVP-P input noise ensures clean acquisition of µV-level neural signals. |
| Industrial Current Monitoring | PCMCIA Card Signal Conditioning |
|
Use Scenario: High-side and low-side current sensing in programmable logic controller (PLC) I/O modules with 24V supply rails. IC Role / Device Role / Timing Role: Dual op-amp configuration implements bidirectional current measurement using shunt resistors and differential amplification. Use Value: Input range extending to V– enables true low-side sensing; ±1.5mV VOS ensures <0.5% full-scale error in 10A measurement ranges. |
Use Scenario: Analog signal routing and level adaptation in legacy PCMCIA data acquisition cards powered from +3.3V or +5V buses. IC Role / Device Role / Timing Role: Dual buffer isolates ADC inputs from multiplexer switching transients while maintaining signal integrity. Use Value: 430kHz GBW supports 100ksps sampling with <0.1% settling; SO-8/DIP compatibility eases drop-in replacement in existing card layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333PA | Zero-drift architecture (0.02µV/°C drift), 17µA IQ, 350kHz GBW - lower offset drift but reduced bandwidth and higher cost. | Better for DC-critical applications like precision weigh scales; less suitable for AC-coupled sensor signals above 100Hz. | Select OPA2333PA when offset drift dominates error budget; retain OPA2244PA for wider bandwidth at ultra-low IQ. |
| MCP6022-I/P | 23µA IQ, 1MHz GBW, rail-to-rail I/O, but only specified down to +2.7V supply - no 2.2V operation. | Preferred for 3.3V/5V systems requiring faster response; incompatible with sub-2.7V battery chemistries (e.g., LiFePO₄). | Choose MCP6022-I/P for higher-speed 3.3V designs; OPA2244PA remains optimal for universal 2.2–36V compatibility and lowest IQ. |
Compared with OPA2333PA and MCP6022-I/P, the OPA2244PA uniquely balances ultra-low quiescent current (50µA), wide supply range (+2.2V to +36V), and 430kHz bandwidth - making it the only dual op-amp qualified for both energy-harvesting sensor nodes and industrial 24V analog I/O without trade-offs in voltage range or power.
Availability
OPA2244PA is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical sensors, and industrial current monitoring requiring stable component supply across extended temperature and voltage ranges.
Supply support for OPA2244PA 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, renowned for high-performance op-amps, data converters, and interface ICs used in test equipment, medical devices, and industrial automation.
The OPA2244PA belongs to TI's MicroAmplifier™ series - engineered specifically for ultra-low-power, wide-supply analog signal conditioning in space- and energy-constrained applications where precision must not compromise efficiency.
FAQ
What is the maximum operating temperature range for the OPA2244PA?
The OPA2244PA is fully specified from –40°C to +85°C and operates reliably from –55°C to +125°C. Its 8-pin DIP package provides θJA = 100°C/W, allowing continuous operation at +85°C ambient without derating when mounted on standard FR-4 PCBs with minimal copper pour.
Does the OPA2244PA support single-supply operation below 3V?
Yes - the OPA2244PA operates from +2.2V to +36V on single supply, making it compatible with 2-cell alkaline (3.2V), LiFePO₄ (3.6V), and even partially discharged 3.7V Li-ion (down to ~2.5V). Its input common-mode range includes ground and output swings to within 0.75V of V+, enabling full functionality at 2.7V and below.
Can the OPA2244PA drive capacitive loads without oscillation?
The OPA2244PA is unity-gain stable and tolerates moderate capacitive loads, but driving >100pF directly may cause overshoot or ringing. For loads >100pF (e.g., long cables or ADC input capacitance), add a 10–100Ω isolation resistor in series with the output. Typical curves show <5% overshoot at 100pF with G=+1 and RL=∞.
How does the OPA2244PA compare to the single-channel OPA244 in performance?
The OPA2244PA shares identical electrical specifications with the OPA244 (single) and OPA4244 (quad) - including 50µA IQ, 430kHz GBW, ±1.5mV VOS, and rail-to-rail input - except for channel separation (140dB) and minor CMRR variation. All versions are interchangeable in most dual-amplifier applications, with OPA2244PA offering space-efficient dual-channel integration in DIP.
Is the OPA2244PA RoHS-compliant and lead-free?
Yes - the OPA2244PA is RoHS-compliant and lead-free, with NiPdAu (NIPDAU) lead finish. It meets JEDEC MSL Level-1 (unlimited floor life) due to its through-hole DIP construction and is rated for reflow soldering per J-STD-020. No moisture sensitivity handling is required prior to assembly.
OPA2244PA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MicroAmplifier™
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
OPA2244PA FAQ
1.How can I place an order for OPA2244PA through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2244PA 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 OPA2244PA reliable?
The price and inventory of OPA2244PA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2244PA is usually 5 days.
3.What payment methods are accepted for OPA2244PA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2244PA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2244PA?
OPA2244PA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2244PA 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 OPA2244PA?
For technical support, including OPA2244PA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2244PA requirements.
6.How does Aetrix verify that OPA2244PA is sourced from the original manufacturer or authorized distributors?
All OPA2244PA 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 OPA2244PA meets industry standards.
7.What is the process for return or replacement of OPA2244PA?
All OPA2244PA units undergo pre-shipment inspection (PSI). If there is an issue with OPA2244PA, 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 OPA2244PA part is unused and in its original packaging.
Return procedure for OPA2244PA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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