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Texas Instruments OPA4244EA/250G4
- Part No.:
- OPA4244EA/250G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4244EA/250G4.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,484
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Product details
Overview
OPA4244EA/250G4 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 ±1.1V to ±18V dual-supply or +2.2V to +36V single-supply operation. It is designed for battery-powered instrumentation requiring low power, wide supply range, and ground-sensing input capability.
For engineers reviewing the OPA4244EA/250G4 datasheet, OPA4244EA/250G4 pinout, OPA4244EA/250G4 application, or OPA4244EA/250G4 equivalent, key selection criteria include its 50µA/channel IQ, 430kHz GBW, TSSOP-14 thermal resistance (100°C/W), CMRR of 82–104dB, and guaranteed operation from –40°C to +85°C - all critical for portable, low-voltage, space-constrained analog signal conditioning.
Technical Context
The OPA4244EA/250G4 implements a fully differential, unity-gain-stable CMOS input stage with independent amplifier cores per channel, enabling 140dB channel separation and eliminating crosstalk in multi-channel sensing. Its input common-mode range extends to V–, supporting true single-supply ground-referenced inputs.
It features no phase inversion under overdrive and maintains stable performance across its full supply range (+2.2V to +36V), with open-loop gain ≥86dB and output swing to within 0.75V of rails (RL = 20kΩ to ground). Input offset voltage is ±0.7mV (typ), with drift of ±4µV/°C.
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 - supports DC-coupled signal conditioning up to ~100kHz at moderate gains. |
| Supply Voltage Range | +2.2V to +36V single or ±1.1V to ±18V dual - operates directly from 3.3V, 5V, 12V, or 24V rails without regulation. |
| Input Common-Mode Range | 0V to (V+) – 0.9V - accepts signals down to ground on single supply, simplifying sensor interfacing. |
| Output Voltage Swing | (V+) – 0.75V / 0.1V - delivers usable dynamic range near both rails for low-headroom systems. |
| Channel Separation | 140 dB - prevents signal coupling between channels in quad configurations like multi-sensor front-ends. |
| CMRR | 82–104 dB - rejects supply noise and common-mode interference in noisy industrial environments. |
Pinout & Package
TSSOP-14 surface-mount package (Package Drawing PW), 5.05 mm × 4.4 mm × 1.2 mm, with exposed pad for thermal enhancement and moisture sensitivity level (MSL) 3 (260°C reflow, 168-hour floor life).
| 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 - connects to feedback network or signal source. |
| 3 | +Input D | Non-inverting input for Amp D - accepts reference or sensor signal; includes ground-referenced range. |
| 4 | V– | Negative supply rail - shared by all four amplifiers; must be bypassed with 0.01µF ceramic capacitor. |
| 5 | +Input C | Non-inverting input for Amp C - electrically isolated from other channels for low-crosstalk design. |
| 6 | –Input C | Inverting input for Amp C - used in precision difference or instrumentation configurations. |
| 7 | Output C | Amplifier C output - independently buffered; no interaction with A/B/D outputs. |
| 8 | Output A | Amplifier A output - primary channel for system-level signal conditioning. |
| 9 | –Input A | Inverting input for Amp A - standard feedback node; supports unity-gain buffer or inverting amplifier. |
| 10 | +Input A | Non-inverting input for Amp A - accepts high-impedance sources (e.g., thermistor, photodiode). |
| 11 | +V | Positive supply rail - shared by all four amplifiers; requires local 0.01µF ceramic decoupling. |
| 12 | +Input B | Non-inverting input for Amp B - supports independent biasing or reference routing. |
| 13 | –Input B | Inverting input for Amp B - used in matched-pair configurations (e.g., dual current sense). |
| 14 | Output B | Amplifier B output - fully independent; suitable for parallel processing or redundancy. |
Key Features
| Feature | Design Value |
|---|---|
| MicroPower Operation | 50 µA/channel IQ enables multi-year battery life in portable medical monitors and IoT edge nodes. |
| Unity-Gain Stability | No external compensation required - simplifies layout and reduces BOM count in sensor interfaces. |
| Ground-Sensing Inputs | Input common-mode range includes V– - eliminates level-shifting circuitry for 0–V referenced transducers. |
| High Channel Isolation | 140 dB channel separation ensures independent operation in quad-configured data acquisition systems. |
| Wide Supply Flexibility | Operates from +2.2V to +36V - supports direct connection to Li-ion, lead-acid, or industrial 24V buses. |
Applications
| Battery-Powered Instrumentation | Portable Medical Devices |
|---|---|
Use Scenario: Low-power handheld multimeter measuring DC voltage, current, and resistance using internal shunt and reference buffers. IC Role / Device Role / Timing Role: Quad op amp provides simultaneous signal conditioning for voltage divider, current sense, reference buffering, and display driver interface. Use Value: 50µA/channel IQ extends alkaline AA battery life beyond 18 months; rail-to-rail output maximizes ADC input range. | Use Scenario: Wearable ECG patch acquiring biopotential signals with ultra-low power consumption and minimal size. IC Role / Device Role / Timing Role: OPA4244EA/250G4 performs electrode biasing, high-pass filtering, gain staging, and right-leg drive amplification. Use Value: Ground-sensing inputs accept sub-mV bio-signals referenced to patient ground; TSSOP-14 footprint fits <8mm² PCB area. |
| PCMCIA Data Acquisition Cards | Battery Pack Monitoring Systems |
Use Scenario: Credit-card-sized PCMCIA card adding 8-channel analog input to laptops for field diagnostics and lab testing. IC Role / Device Role / Timing Role: Four independent amplifiers condition four differential sensor pairs (e.g., temperature, pressure, strain, humidity). Use Value: 140dB channel separation prevents cross-talk between adjacent channels; 430kHz GBW supports 10-bit sampling at 50ksps. | Use Scenario: Smart lithium-ion battery pack with integrated fuel gauging, cell balancing, and safety monitoring. IC Role / Device Role / Timing Role: Amplifiers perform cell voltage measurement, current sense amplification, thermal sensor buffering, and charge/discharge control loop conditioning. Use Value: Single +3.3V supply operation eliminates need for auxiliary LDOs; ±2mV max VOS ensures <0.5% SOC error over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464IDR | Higher IQ (550µA/channel), higher GBW (6.4MHz), but larger 14-pin SOIC package and no guaranteed V–-to-rail input. | Better for higher-speed, AC-coupled applications; unsuitable for ground-referenced DC sensing below 1.5V. | Select when bandwidth >1MHz is required and power budget allows >10× higher IQ. |
| LMV324IDR | Lower IQ (40µA/channel), lower GBW (1MHz), rail-to-rail input/output, but only 65dB CMRR and no specified channel separation. | Suitable for cost-sensitive consumer electronics where crosstalk <80dB is acceptable. | Select for price-driven designs where 140dB isolation and 82dB+ CMRR are not mandatory. |
Compared with TLV2464IDR and LMV324IDR, the OPA4244EA/250G4 uniquely balances ultra-low power (50µA), high channel isolation (140dB), and ground-sensing capability - making it optimal for precision, multi-channel, battery-operated measurement systems where signal integrity and energy efficiency are co-prioritized.
Availability
OPA4244EA/250G4 is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical devices, and PCMCIA data acquisition cards requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for OPA4244EA/250G4 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 (TI) is a global semiconductor leader specializing in analog and embedded processing technologies, with deep heritage in precision op amps dating to Burr-Brown's acquisition in 2000.
The OPA4244EA/250G4 belongs to TI's MicroAmplifier™ series, engineered specifically for ultra-low-power, space-constrained, single-supply analog signal conditioning in portable and battery-operated systems.
FAQ
What is the maximum operating temperature range for the OPA4244EA/250G4?
The OPA4244EA/250G4 is fully specified from –40°C to +85°C and operates across –55°C to +125°C. Its thermal resistance θJA is 100°C/W in the TSSOP-14 package, enabling reliable function in industrial enclosures without forced air cooling when power dissipation remains below 350mW.
Does the OPA4244EA/250G4 require external compensation for unity-gain stability?
No, the OPA4244EA/250G4 is internally compensated and unity-gain stable. It does not require external capacitors or resistors for stability in buffer, inverting, or non-inverting configurations - verified across all supply voltages from +2.2V to +36V and temperatures from –40°C to +85°C.
Can the OPA4244EA/250G4 drive capacitive loads, and what is its recommended maximum?
The OPA4244EA/250G4 can drive capacitive loads up to 100pF with minimal overshoot (<10%) in unity-gain configuration, as confirmed by typical performance curves. For loads >100pF, a small series resistor (10–50Ω) at the output is recommended to maintain stability without degrading bandwidth significantly.
What is the input offset voltage specification for the OPA4244EA/250G4 over temperature?
The OPA4244EA/250G4 has a maximum input offset voltage of ±2mV over the full –40°C to +85°C range, with a typical value of ±0.7mV at +25°C. Its offset drift is ±4µV/°C (max), ensuring predictable calibration behavior in temperature-varying environments like outdoor sensor nodes.
Is the OPA4244EA/250G4 pin-compatible with other members of the OPA244 family?
No - the OPA4244EA/250G4 (TSSOP-14) is not pin-compatible with the OPA244 (SOT-23-5) or OPA2244 (MSOP-8). Each variant uses a distinct pinout optimized for its channel count and package; PCB layout must be specific to the TSSOP-14 footprint and 14-pin assignment of the OPA4244EA/250G4.
OPA4244EA/250G4 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:
- Discontinued at Digi-Key
- 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/250G4 FAQ
1.How can I place an order for OPA4244EA/250G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4244EA/250G4 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/250G4 reliable?
The price and inventory of OPA4244EA/250G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4244EA/250G4 is usually 5 days.
3.What payment methods are accepted for OPA4244EA/250G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4244EA/250G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4244EA/250G4?
OPA4244EA/250G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4244EA/250G4 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/250G4?
For technical support, including OPA4244EA/250G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4244EA/250G4 requirements.
6.How does Aetrix verify that OPA4244EA/250G4 is sourced from the original manufacturer or authorized distributors?
All OPA4244EA/250G4 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/250G4 meets industry standards.
7.What is the process for return or replacement of OPA4244EA/250G4?
All OPA4244EA/250G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA4244EA/250G4, 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/250G4 part is unused and in its original packaging.
Return procedure for OPA4244EA/250G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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