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Texas Instruments OPA4244EA/2K5
- Part No.:
- OPA4244EA/2K5
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4244EA/2K5.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,550
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Product details
Overview
OPA4244EA/2K5 from Texas Instruments (formerly Burr-Brown) is a quad, rail-to-rail output, micro-power operational amplifier in TSSOP-14 package, delivering 430kHz gain-bandwidth, 50µA/channel quiescent current, and single-supply operation from +2.2V to +36V. It features ±1.5mV input offset voltage, 82dB CMRR, and operates across –40°C to +85°C - ideal for battery-powered instrumentation and portable sensor signal conditioning.
For engineers reviewing the OPA4244EA/2K5 datasheet, OPA4244EA/2K5 pinout, OPA4244EA/2K5 application, or OPA4244EA/2K5 equivalent, key selection criteria include ultra-low IQ for multi-channel sensing nodes, wide supply range enabling direct connection to Li-ion or industrial rails, guaranteed rail-to-rail output swing, and channel separation >140dB to prevent crosstalk in dense analog front-ends.
Technical Context
The OPA4244EA/2K5 employs a precision bipolar input stage with fully independent amplifier cores per channel, eliminating interaction even under overload or overdrive conditions. Its unity-gain stable architecture supports direct use in buffer, gain, and active filter configurations without external compensation.
Input common-mode range includes ground (0V), enabling true single-supply operation in low-side current sensing and sensor interfacing. Output swings to within 0.75V of V+ and 0.2V of V– at 20kΩ load, maintaining linearity across its full specified temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Quiescent Current | 50 µA per amplifier - enables 4-channel analog front-end with <200 µA total IQ, critical for coin-cell or energy-harvesting systems. |
| Gain-Bandwidth Product | 430 kHz - supports stable closed-loop gain up to ~100× at DC–100 Hz for precision sensor amplification. |
| Input Offset Voltage | ±1.5 mV (typ) - ensures ≤15 mV error at 10× gain, suitable for 12-bit ADC interfaces without trimming. |
| Supply Range | +2.2V to +36V single supply - eliminates need for dual supplies in industrial 24V or battery-backed applications. |
| Output Swing | (V+) – 0.75V / 0.2V - delivers >95% of full-scale dynamic range into 20kΩ load, maximizing SNR in ADC-driven systems. |
| Channel Separation | 140 dB - prevents signal coupling between adjacent channels in multi-sensor data acquisition. |
| Common-Mode Rejection | 82 dB (min) - maintains accuracy when referenced to noisy or floating grounds in motor control feedback paths. |
Pinout & Package
TSSOP-14 surface-mount package (JEDEC PW drawing), 5.0 mm × 4.4 mm × 1.2 mm, RoHS-compliant, moisture sensitivity level MSL-3 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output D | Amplifier D output - drives external load or next-stage input; rail-to-rail capable. |
| 2 | –Input D | Inverting input for Amp D - high-impedance node; requires matched trace routing for noise immunity. |
| 3 | +Input D | Non-inverting input for Amp D - connects to reference, sensor, or feedback network. |
| 4 | V– | Negative supply rail - must be bypassed with 0.01 µF ceramic capacitor near pin. |
| 5 | +Input C | Non-inverting input for Amp C - electrically isolated from other inputs; no shared substrate path. |
| 6 | –Input C | Inverting input for Amp C - independent bias current path; avoids crosstalk with Amp D. |
| 7 | Output C | Amplifier C output - fully decoupled from Amp D output; supports simultaneous multi-channel buffering. |
| 8 | Output A | Amplifier A output - first channel output; pin 8 is standard for quad op amp output sequencing. |
| 9 | –Input A | Inverting input for Amp A - referenced to same ground as V–; supports inverting gain configurations. |
| 10 | +Input A | Non-inverting input for Amp A - accepts signals down to V– (ground), enabling true single-supply operation. |
| 11 | +V | Positive supply rail - shared by all four amplifiers; requires local 0.01 µF ceramic bypass. |
| 12 | +Input B | Non-inverting input for Amp B - identical electrical characteristics to +Input A/C/D. |
| 13 | –Input B | Inverting input for Amp B - independent input stage; no performance degradation when other channels are overloaded. |
| 14 | Output B | Amplifier B output - last channel output; layout symmetry aids thermal balance in PCB design. |
Key Features
| Feature | Design Value |
|---|---|
| MicroPower Operation | 50 µA/channel IQ enables 4-channel analog signal conditioning with <200 µA total supply current - extends battery life in portable medical monitors. |
| Rail-to-Rail Output | Swings to within 0.75V of V+ and 0.2V of V– at 20kΩ load - maximizes usable dynamic range for 12-bit+ ADCs without level-shifting circuitry. |
| Fully Independent Channels | No shared bias networks or substrate paths - guarantees <140dB channel separation and zero interaction during overload recovery. |
| Ground-Sensing Input | Input common-mode range includes V– (0V) - allows direct interface to low-side shunt resistors and grounded sensors without level translation. |
| Unity-Gain Stable | No external compensation required - simplifies design of buffers, active filters, and transimpedance amplifiers across all gains ≥1. |
Applications
| Battery-Powered Sensor Node | Industrial 4–20mA Transmitter |
|---|---|
Use Scenario: Four-channel thermistor, RTD, or strain gauge signal conditioning in wireless IoT sensor node powered by CR2032 or Li-SOCl₂ battery. IC Role / Device Role / Timing Role: Quad OPA4244EA/2K5 provides simultaneous low-noise, low-drift amplification and filtering for four analog inputs prior to multiplexed ADC sampling. Use Value: 50 µA/channel IQ reduces total analog front-end current to <200 µA, extending 10-year battery life while maintaining 12-bit effective resolution. | Use Scenario: Analog signal conditioning and loop-driver interface in field-mounted pressure or flow transmitter operating from 24V industrial rail. IC Role / Device Role / Timing Role: One amplifier buffers sensor output, second configures as current-summing node, third sets reference, fourth drives 4–20mA output transistor base. Use Value: Wide +2.2V to +36V supply range allows direct use of unregulated 24V rail; rail-to-rail output ensures full 20mA compliance across temperature. |
| Portable ECG Front-End | Multi-Channel Data Acquisition Module |
Use Scenario: Low-noise, low-power analog front-end for handheld ECG device with three-lead differential sensing and right-leg drive. IC Role / Device Role / Timing Role: Three amplifiers implement lead-I, lead-II, and right-leg drive circuits; fourth provides reference buffer or filtered common-mode rejection. Use Value: 0.4 µVpp input noise (0.1–10 kHz) and ±1.5 mV VOS support sub-µV bio-potential measurement; TSSOP-14 footprint saves board space vs discrete solutions. | Use Scenario: 16-channel industrial DAQ module with simultaneous sampling, requiring four independent 4-channel analog signal chains. IC Role / Device Role / Timing Role: Each OPA4244EA/2K5 handles four channels of anti-alias filtering, gain setting, and driver buffering before multiplexing to ADC. Use Value: 140 dB channel separation prevents inter-channel crosstalk during simultaneous sampling; guaranteed –40°C to +85°C operation ensures reliability in factory environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2444IPW | Higher IQ (125 µA/channel), lower GBW (600 kHz), same TSSOP-14 package. | Less suitable for ultra-low-power battery systems but better for higher-speed filtering. | Select TLV2444IPW only if bandwidth >430 kHz is required and power budget allows +2.5× IQ increase. |
| LMV324IDR | CMOS input (pA bias), lower VOS drift (±2 µV/°C), but only 1 MHz GBW and 120 µA IQ. | Better for high-impedance pH or ion-selective electrode sensors; not optimized for low-noise precision DC gain. | Choose LMV324IDR when interfacing megaohm-level sources where input bias current dominates error, not OPA4244EA/2K5's bipolar-optimized low-noise DC performance. |
Compared with TLV2444IPW and LMV324IDR, the OPA4244EA/2K5 uniquely balances ultra-low quiescent current (50 µA), low input voltage noise (22 nV/√Hz), and robust bipolar input stage - making it optimal for precision, battery-constrained, multi-channel DC-coupled signal chains where noise, drift, and power are co-constrained.
Availability
OPA4244EA/2K5 is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial 4–20mA transmitters, and portable medical devices requiring stable component supply with full lifecycle support.
Supply support for OPA4244EA/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-accuracy, low-power, and robust industrial-grade signal conditioning ICs.
The OPA4244EA/2K5 belongs to TI's MicroAmplifier™ series, designed specifically for space- and power-constrained applications demanding precision DC performance, rail-to-rail output, and guaranteed operation across extended industrial temperatures.
FAQ
What is the maximum operating temperature range for the OPA4244EA/2K5?
The OPA4244EA/2K5 is fully specified from –40°C to +85°C and operates reliably from –55°C to +125°C. Its thermal resistance θJA is 100°C/W in the TSSOP-14 package, allowing safe operation at full rated load within this extended range when properly heatsinked on PCB copper.
Does the OPA4244EA/2K5 require external compensation for unity-gain stability?
No, the OPA4244EA/2K5 is internally compensated and unity-gain stable. It can be used directly in buffer, inverting, non-inverting, and active filter configurations without external capacitors or resistors for phase compensation - verified across its full supply and temperature range.
Can the OPA4244EA/2K5 drive capacitive loads, and what is the recommended layout practice?
The OPA4244EA/2K5 can drive up to 100 pF capacitive load with minimal overshoot (<10%) in unity-gain configuration. For heavier loads, add a small series resistor (10–50 Ω) between output and capacitor. Always place 0.01 µF ceramic bypass capacitors directly between V+ and V– pins, as close as possible to the OPA4244EA/2K5 package.
What is the input common-mode voltage range of the OPA4244EA/2K5, and why does it matter for single-supply designs?
The input common-mode voltage range of the OPA4244EA/2K5 extends from V– (ground) to (V+) – 0.9 V. This ground-sensing capability enables direct interface to low-side current shunts, grounded thermistors, and single-ended sensors - eliminating level-shifters and reducing component count in +3.3V or +5V battery-powered systems.
How does the OPA4244EA/2K5 achieve 140 dB channel separation, and where is this critical?
The OPA4244EA/2K5 achieves 140 dB channel separation through completely independent circuitry per amplifier - no shared bias current sources, substrates, or power routing. This is critical in multi-channel data acquisition modules where crosstalk between simultaneously sampled channels would corrupt correlated measurements like vibration analysis or multi-phase motor current monitoring.
OPA4244EA/2K5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MicroAmplifier™
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- 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 (x4 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:
- 14-TSSOP
OPA4244EA/2K5 FAQ
1.How can I place an order for OPA4244EA/2K5 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4244EA/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 OPA4244EA/2K5 reliable?
The price and inventory of OPA4244EA/2K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4244EA/2K5 is usually 5 days.
3.What payment methods are accepted for OPA4244EA/2K5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4244EA/2K5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4244EA/2K5?
OPA4244EA/2K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4244EA/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 OPA4244EA/2K5?
For technical support, including OPA4244EA/2K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4244EA/2K5 requirements.
6.How does Aetrix verify that OPA4244EA/2K5 is sourced from the original manufacturer or authorized distributors?
All OPA4244EA/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 OPA4244EA/2K5 meets industry standards.
7.What is the process for return or replacement of OPA4244EA/2K5?
All OPA4244EA/2K5 units undergo pre-shipment inspection (PSI). If there is an issue with OPA4244EA/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 OPA4244EA/2K5 part is unused and in its original packaging.
Return procedure for OPA4244EA/2K5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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