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Texas Instruments OPA2244EA/2K5
- Part No.:
- OPA2244EA/2K5
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2244EA/2K5.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,343
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Product details
Overview
OPA2244EA/2K5 from Texas Instruments (formerly Burr-Brown) is a dual, rail-to-rail input/output, micropower operational amplifier in MSOP-8 package, delivering 430kHz gain-bandwidth, 50µA/channel quiescent current, and ±1.1V to ±18V dual-supply operation. It enables precision signal conditioning in space-constrained, battery-powered instrumentation such as portable medical sensors and low-power data acquisition systems.
For engineers reviewing the OPA2244EA/2K5 datasheet, OPA2244EA/2K5 pinout, OPA2244EA/2K5 application, or OPA2244EA/2K5 equivalent, key selection criteria include its guaranteed 50µA/channel IQ over –40°C to +85°C, unity-gain stability without external compensation, and ground-sensing input common-mode range - critical for single-supply sensor front-ends and current sensing.
Technical Context
The OPA2244EA/2K5 employs a proprietary bipolar input stage optimized for ultra-low bias current (–25nA max) and low voltage noise (22nV/√Hz), enabling high-impedance source interfacing without significant DC error or noise degradation. Its fully independent dual-amplifier architecture ensures 140dB channel separation, eliminating crosstalk in multi-channel monitoring applications.
Designed for robust single- or dual-supply operation, it features rail-to-rail input (including ground) and output swing (to within 0.75V of rails at RL = 20kΩ), with no phase inversion under overload - simplifying design in unregulated battery systems where supply voltage varies from +2.2V to +36V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 430kHz - supports stable closed-loop amplification up to ~400kHz at G = 1, suitable for low-frequency sensor signal conditioning and filtering. |
| Quiescent Current per Channel | 50µA (typ) - enables >1-year battery life in coin-cell-powered devices operating at 3.3V with 10µA system sleep current. |
| Input Offset Voltage | ±1.5mV (typ) - contributes ≤1.5mV error in unity-gain buffer configurations, acceptable for 12-bit ADC interfaces with 2.048V reference. |
| Common-Mode Input Range | 0V to (V+) – 0.9V - allows direct connection to ground-referenced transducers (e.g., thermistors, strain gauges) without level-shifting circuitry. |
| Output Voltage Swing | (V+) – 0.75V / 0.1V (RL = 20kΩ to ground) - delivers >3.0Vpp output from 3.3V supply, sufficient for driving SAR ADC inputs or low-power comparators. |
| Channel Separation | 140dB - prevents signal leakage between channels in dual-sensor systems (e.g., differential pressure + temperature on same PCB). |
| Supply Voltage Range | ±1.1V to ±18V dual or +2.2V to +36V single - accommodates wide-input industrial power rails and legacy ±15V analog backplanes. |
Pinout & Package
OPA2244EA/2K5 is packaged in an 8-pin VSSOP (MSOP-8) with 0.65mm pitch, measuring 3.0mm × 3.0mm × 1.0mm - optimized for high-density portable PCB layouts. Thermal resistance θJA is 200°C/W (surface-mount).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V– (Negative Supply) | Connects to ground or negative rail; required for dual-supply operation or referenced single-supply biasing. |
| 2 | +In A (Non-Inverting Input, Amplifier A) | High-impedance input (10⁹Ω || 2pF); accepts signals from 0V to (V+) – 0.9V without clipping. |
| 3 | –In A (Inverting Input, Amplifier A) | High-impedance input; used with feedback network to set gain or configure transimpedance amplifiers. |
| 4 | Out A (Output, Amplifier A) | Capable of sourcing/sinking ±12mA; drives 20kΩ loads to within 0.75V of V+ and 0.1V of V–. |
| 5 | Out B (Output, Amplifier B) | Electrically isolated from Out A; supports independent signal paths without crosstalk-induced measurement drift. |
| 6 | –In B (Inverting Input, Amplifier B) | Independent input node; enables dual-channel functions like differential-to-single-ended conversion with matched gain. |
| 7 | +In B (Non-Inverting Input, Amplifier B) | Ground-capable input; used in low-side current sensing where one input connects directly to shunt resistor ground node. |
| 8 | V+ (Positive Supply) | Accepts +2.2V to +36V; bypass with 0.01µF ceramic capacitor near pin to suppress high-frequency supply noise. |
Key Features
| Feature | Design Value |
|---|---|
| MicroPower Operation | 50µA/channel IQ enables <10µA total system standby current when paired with low-power microcontrollers and shutdown logic. |
| Unity-Gain Stable | No external compensation required - reduces BOM count and layout area versus decompensated op amps needing stability capacitors. |
| Rail-to-Rail Input & Output | Supports full-scale signal acquisition from ground-referenced sources and maximizes dynamic range into 3.3V ADCs. |
| No Phase Inversion | Prevents output latch-up during input overdrive - eliminates need for clamping diodes or protection circuitry in sensor interface stages. |
| Wide Temperature Range | Specified from –40°C to +85°C; operates continuously from –55°C to +125°C - suitable for automotive cabin and industrial edge nodes. |
Applications
| Battery-Powered Portable Instrumentation | Low-Side Current Sensing |
|---|---|
Use Scenario: Handheld multimeter front-end amplifying mV-level thermocouple or shunt voltage outputs. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with low offset and drift, buffering sensor output before 16-bit sigma-delta ADC. Use Value: 50µA/channel IQ extends AA battery life to >2 years; rail-to-rail input captures full 0–100mV thermocouple span without level shifters. |
Use Scenario: Monitoring battery pack discharge current via 10mΩ shunt resistor in wearable health monitors. IC Role / Device Role / Timing Role: Dual-op-amp configured as differential amplifier (A) and reference buffer (B) for offset-compensated current measurement. Use Value: Ground-sensing input allows direct shunt connection; 140dB channel separation prevents load-switching noise from corrupting reference voltage. |
| PCMCIA Card Analog Interface | Consumer Audio Line Driver |
Use Scenario: Signal conditioning for audio codec line-in on legacy PCMCIA data acquisition cards. IC Role / Device Role / Timing Role: Single-supply (+3.3V) non-inverting amplifier with gain = 2, driving 10kΩ codec input impedance. Use Value: 430kHz GBW ensures flat frequency response to 20kHz; 22nV/√Hz input noise preserves SNR in 16-bit audio paths. |
Use Scenario: Headphone driver stage in Bluetooth speaker ICs requiring low-noise, low-quiescent-current amplification. IC Role / Device Role / Timing Role: Unity-gain buffer isolating DAC output from variable headphone impedance (16–600Ω). Use Value: Rail-to-rail output delivers >2.5Vpp into 32Ω loads from 3.3V supply; 0.4µVp-p 0.1–10kHz noise avoids audible hiss. |
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), 17µA/channel IQ, 350kHz GBW, SO-8 package. | Better DC accuracy for long-term sensor calibration; lower bandwidth limits AC-coupled audio use. | Select OPA2333AIDR when offset drift <0.1µV/°C is mandatory; choose OPA2244EA/2K5 for higher bandwidth at ultra-low IQ. |
| MCP6022-E/SN | CMOS input (1pA IB), 180µA/channel IQ, 1MHz GBW, SO-8 package, wider VDD range (1.8–5.5V). | Superior input impedance for pH electrode interfaces; higher IQ limits battery runtime in always-on devices. | Select MCP6022-E/SN for high-Z sensor nodes with 3.3V-only supplies; retain OPA2244EA/2K5 for extended voltage range and lowest IQ. |
Compared with OPA2333AIDR and MCP6022-E/SN, the OPA2244EA/2K5 uniquely balances sub-50µA IQ, 430kHz bandwidth, and ±18V dual-supply capability - making it optimal for industrial portable instruments requiring both precision and wide dynamic range.
Availability
OPA2244EA/2K5 is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical devices, and low-power industrial data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2244EA/2K5 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 signal-conditioning solutions for industrial, automotive, and medical markets.
The OPA2244EA/2K5 belongs to TI's MicroAmplifier™ series, engineered specifically for space- and energy-constrained applications where micropower operation, rail-to-rail performance, and guaranteed specifications over temperature must coexist without design trade-offs.
FAQ
What is the maximum operating supply voltage for the OPA2244EA/2K5?
The OPA2244EA/2K5 supports a maximum supply voltage of +36V in single-supply mode or ±18V in dual-supply mode. Absolute maximum ratings specify V+ to V– ≤ 36V, with input voltage range limited to (V–) – 0.3V to (V+) + 0.3V. Exceeding these limits risks permanent damage. The OPA2244EA/2K5 is fully specified from +2.6V to +36V, ensuring consistent performance across this entire range.
Does the OPA2244EA/2K5 require external compensation for unity-gain stability?
No, the OPA2244EA/2K5 is internally compensated and unity-gain stable without external components. This is confirmed in the Applications Information section of the datasheet, which states "The OPA244 is unity-gain stable" - a specification shared across the OPA244 family including the OPA2244EA/2K5. Adding compensation capacitors is unnecessary and may degrade bandwidth or settling time.
What is the thermal resistance (θJA) of the OPA2244EA/2K5 in its MSOP-8 package?
The OPA2244EA/2K5 in the VSSOP (MSOP-8) package has a junction-to-ambient thermal resistance (θJA) of 200°C/W under standard JEDEC test conditions. This value assumes a 2-layer board with 1 in² copper pour on top and bottom layers. For high-reliability designs, derate power dissipation using this θJA and ensure ambient temperature remains below +85°C to maintain junction temperature ≤150°C.
Can the OPA2244EA/2K5 drive capacitive loads without oscillation?
The OPA2244EA/2K5 can drive moderate capacitive loads but requires careful layout. Typical performance curves show overshoot increases with capacitance: at G = +1 and RL = ∞, 100pF causes ~25% overshoot. For loads >100pF, add a small series resistor (10–50Ω) between output and capacitor to isolate the reactive load. The OPA2244EA/2K5 does not include internal capacitive-load compensation, so external isolation is necessary for stable operation into cables or ADC input filters.
Is the OPA2244EA/2K5 RoHS-compliant and lead-free?
Yes, the OPA2244EA/2K5 is RoHS-compliant and lead-free. Per TI's packaging documentation, it carries a "Green (RoHS & no Sb/Br)" eco plan with "NIPDAU" (nickel-palladium-gold) lead finish and complies with JEDEC MSL Level-2-260°C-1 year moisture sensitivity rating. The device marking "A44" and tape-and-reel packaging (2500 units/reel) confirm full compliance with EU RoHS Directive 2011/65/EU.
OPA2244EA/2K5 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:
- 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:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA2244EA/2K5 FAQ
1.How can I place an order for OPA2244EA/2K5 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2244EA/2K5 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/2K5 reliable?
The price and inventory of OPA2244EA/2K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2244EA/2K5 is usually 5 days.
3.What payment methods are accepted for OPA2244EA/2K5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2244EA/2K5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2244EA/2K5?
OPA2244EA/2K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2244EA/2K5 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/2K5?
For technical support, including OPA2244EA/2K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2244EA/2K5 requirements.
6.How does Aetrix verify that OPA2244EA/2K5 is sourced from the original manufacturer or authorized distributors?
All OPA2244EA/2K5 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/2K5 meets industry standards.
7.What is the process for return or replacement of OPA2244EA/2K5?
All OPA2244EA/2K5 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2244EA/2K5, 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/2K5 part is unused and in its original packaging.
Return procedure for OPA2244EA/2K5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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