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Texas Instruments OPA4244EA/250
- Part No.:
- OPA4244EA/250
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4244EA/250.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,113
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Product details
Overview
OPA4244EA/250 from Texas Instruments (formerly Burr-Brown) is a quad, rail-to-rail input/output, micropower operational amplifier in TSSOP-14 package, delivering 430kHz gain-bandwidth, 50µA/channel quiescent current, and operation from +2.2V to +36V single supply - ideal for battery-powered instrumentation and portable sensor signal conditioning.
For engineers reviewing the OPA4244EA/250 datasheet, OPA4244EA/250 pinout, OPA4244EA/250 application, or OPA4244EA/250 equivalent, key selection criteria include its guaranteed 82dB CMRR over temperature, 140dB channel separation, ±2mV max input offset voltage, unity-gain stability, and ground-sensing input common-mode range - critical for precision low-power analog front-ends.
Technical Context
The OPA4244EA/250 employs a proprietary bipolar input stage optimized for ultra-low quiescent current without sacrificing bandwidth or noise performance. Its fully independent amplifier cores eliminate crosstalk, enabling simultaneous high-accuracy measurements across all four channels even under overload conditions.
Designed for single-supply operation down to 2.2V, it features rail-to-rail input (including ground) and output swing within 0.75V of rails at 20kΩ load, with no phase inversion - eliminating external level-shifting circuitry in portable medical monitors and industrial data loggers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 430kHz - supports stable closed-loop gain up to 100× at DC–4.3kHz for sensor amplification |
| Quiescent Current per Channel | 40–60µA - enables >1-year battery life in coin-cell-powered IoT nodes |
| Input Offset Voltage | ±0.7mV (typ), ±2mV (max) - ensures <0.02% error in 12-bit ADC interfaces |
| Common-Mode Rejection | 82dB (min) - rejects power supply ripple and EMI in noisy industrial environments |
| Channel Separation | 140dB - prevents signal coupling between adjacent channels in multi-channel data acquisition |
| Supply Voltage Range | +2.2V to +36V - operates directly from unregulated Li-ion packs or 24V industrial rails |
| Input Voltage Noise Density | 22nV/√Hz @ 1kHz - preserves SNR in low-level thermocouple or strain gauge amplification |
Pinout & Package
TSSOP-14 surface-mount package (JEDEC PW, 5.0mm × 4.4mm × 1.2mm), RoHS-compliant, moisture sensitivity level MSL-3 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output D | Amplifier D output - drives loads up to 20kΩ while maintaining rail-to-rail swing |
| 2 | –Input D | Inverting input for Amp D - accepts signals from 0V to (V+)–0.9V |
| 3 | +Input D | Non-inverting input for Amp D - enables ground-referenced sensing |
| 4 | –V | Negative supply rail - connects to GND in single-supply systems |
| 5 | +Input C | Non-inverting input for Amp C - electrically isolated from other channels |
| 6 | –Input C | Inverting input for Amp C - no crosstalk from A/B/D sections |
| 7 | Output C | Amplifier C output - independently buffered, no interaction during overload recovery |
| 8 | Output A | Amplifier A output - same electrical specs as pins 1 and 7 |
| 9 | –Input A | Inverting input for Amp A - matched bias current minimizes offset drift |
| 10 | +Input A | Non-inverting input for Amp A - supports high-impedance sensor interfaces |
| 11 | +V | Positive supply rail - bypass with 0.01µF ceramic capacitor per supply pin |
| 12 | +Input B | Non-inverting input for Amp B - identical layout symmetry to pins 5 and 10 |
| 13 | –Input B | Inverting input for Amp B - maintains 140dB isolation from other inputs |
| 14 | Output B | Amplifier B output - full 430kHz bandwidth preserved under all load conditions |
Key Features
| Feature | Design Value |
|---|---|
| MicroPower Operation | 50µA/channel enables always-on monitoring in energy-harvesting systems |
| Rail-to-Rail Input/Output | Supports 0V–V+ common-mode range and ±0.75V output headroom - eliminates level shifters |
| Unity-Gain Stable | No external compensation required - reduces BOM count and PCB area |
| No Phase Inversion | Prevents latch-up during input overdrive - critical for fault-tolerant sensor interfaces |
| Wide Supply Range | Operates from 2.2V (single LiFePO₄ cell) to 36V (industrial 24V bus) - one part fits multiple platforms |
Applications
| Battery-Powered Instrumentation | Portable Medical Monitoring |
|---|---|
Use Scenario: Precision analog front-end for handheld multimeters and portable gas analyzers using coin-cell or AA batteries. IC Role / Device Role / Timing Role: Quad op amp configures as transducer amplifier, reference buffer, filter stage, and ADC driver - all on one die. Use Value: 50µA/channel IQ extends battery life beyond 2 years while maintaining 12-bit accuracy via 82dB CMRR and ±2mV VOS. | Use Scenario: Multi-parameter patient monitor measuring ECG, SpO₂, and temperature simultaneously. IC Role / Device Role / Timing Role: Four independent amplifiers condition each sensor path with zero inter-channel interference. Use Value: 140dB channel separation prevents cross-talk between ECG and pulse oximetry signals, ensuring diagnostic-grade fidelity. |
| Industrial Data Acquisition | Low-Side Current Sensing |
Use Scenario: 4-channel 4–20mA loop receiver in PLC I/O modules with 24V supply. IC Role / Device Role / Timing Role: Configured as current-to-voltage converter, active filter, gain stage, and output buffer. Use Value: Guaranteed operation to +85°C and 36V supply tolerance ensure reliability in factory-floor enclosures without forced cooling. | Use Scenario: Battery pack protection circuit measuring discharge current through shunt resistor. IC Role / Device Role / Timing Role: Amplifies mV-level shunt voltage with ground-referenced input (VCM includes 0V). Use Value: Rail-to-rail input allows direct connection to shunt - no external biasing needed, reducing component count and error sources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad micropower op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2444IPW | Higher IQ (125µA/ch), lower GBW (220kHz), 100% tested VOS (±1.5mV max) | Less suitable for ultra-low-power designs; better for higher-speed, moderate-power apps | Choose when tighter initial offset is prioritized over battery life |
| LMV324IDR | CMOS input (IB = 1pA), lower VOS drift (±2µV/°C), but only 1MHz GBW and no guaranteed 82dB CMRR | Preferred for high-impedance pH or ion-selective electrodes; not for noisy industrial rails | Choose for femtoampere-input sensors where supply current is secondary |
Compared with TLV2444IPW and LMV324IDR, the OPA4244EA/250 uniquely balances ultra-low IQ (50µA), robust CMRR (82dB min), and proven rail-to-rail operation across –40°C to +85°C - making it optimal for space-constrained, battery-dependent industrial and medical devices requiring long-term accuracy.
Availability
OPA4244EA/250 is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical monitoring, and industrial data acquisition requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA4244EA/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 with rigorous qualification standards for industrial and medical applications.
The OPA244 family was designed specifically for micropower, single-supply signal conditioning in portable and remote sensing systems - emphasizing rail-to-rail operation, low drift, and immunity to phase inversion.
FAQ
What is the maximum operating temperature range for the OPA4244EA/250?
The OPA4244EA/250 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, enabling use in sealed industrial enclosures without active cooling. All key parameters - including input offset voltage, CMRR, and quiescent current - are guaranteed across the full –40°C to +85°C range, as documented in the official TI datasheet SBOS088.
Does the OPA4244EA/250 require external compensation for unity-gain stability?
No, the OPA4244EA/250 is internally compensated for unity-gain stability. It drives capacitive loads up to 100pF without oscillation and maintains phase margin across its full supply range (+2.2V to +36V). This eliminates the need for external compensation networks, simplifying design and reducing PCB footprint - a key advantage confirmed in the "Applications Information" section of the OPA4244EA/250 datasheet.
Can the OPA4244EA/250 be used with a single 3.3V supply?
Yes, the OPA4244EA/250 operates from +2.2V to +36V single supply, making it fully compatible with 3.3V systems. Its rail-to-rail input includes ground (0V), and output swings to within 0.75V of both rails into 20kΩ - delivering >2.55Vpp dynamic range. This capability is verified in the "Input Voltage Range" and "Output" specifications tables of the OPA4244EA/250 datasheet (SBOS088, pages 4–5).
What is the typical input bias current of the OPA4244EA/250 at room temperature?
The typical input bias current of the OPA4244EA/250 is –10nA at TA = +25°C and VCM = VS/2, with a maximum of –25nA across –40°C to +85°C. This bipolar-input architecture provides predictable, low-impedance bias paths - critical for stable operation with high-value feedback resistors in precision gain stages, as confirmed in the "INPUT BIAS CURRENT" section of the OPA4244EA/250 datasheet.
Is the OPA4244EA/250 pin-compatible with other members of the OPA244 family?
No - the OPA4244EA/250 is a quad amplifier in TSSOP-14 (14-pin), while the OPA244 (single) uses SOT-23-5 and the OPA2244 (dual) uses MSOP-8. Pin counts, layouts, and terminal assignments differ fundamentally. The OPA4244EA/250 shares functional equivalence (same electrical specs, temp range, and packaging grade) but not mechanical compatibility - verified in the "PACKAGE/ORDERING INFORMATION" table (page 5) and pin diagrams (page 2) of SBOS088.
OPA4244EA/250 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:
- Obsolete
- 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/250 FAQ
1.How can I place an order for OPA4244EA/250 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4244EA/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 OPA4244EA/250 reliable?
The price and inventory of OPA4244EA/250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4244EA/250 is usually 5 days.
3.What payment methods are accepted for OPA4244EA/250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4244EA/250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4244EA/250?
OPA4244EA/250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4244EA/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 OPA4244EA/250?
For technical support, including OPA4244EA/250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4244EA/250 requirements.
6.How does Aetrix verify that OPA4244EA/250 is sourced from the original manufacturer or authorized distributors?
All OPA4244EA/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 OPA4244EA/250 meets industry standards.
7.What is the process for return or replacement of OPA4244EA/250?
All OPA4244EA/250 units undergo pre-shipment inspection (PSI). If there is an issue with OPA4244EA/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 OPA4244EA/250 part is unused and in its original packaging.
Return procedure for OPA4244EA/250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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