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Texas Instruments OPA2743EA/250
- Part No.:
- OPA2743EA/250
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2743EA/250.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:745
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Product details
Overview
OPA2743EA/250 from Texas Instruments is a dual-channel, rail-to-rail input/output CMOS operational amplifier optimized for 12V operation, delivering 7MHz gain-bandwidth, 10V/µs slew rate, and 1.1mA quiescent current per amplifier. It operates from single supplies (3.5V–12V) or dual supplies (±1.75V–±6V), with input common-mode range extending 100mV beyond rails and output swing within 100mV of rails under light load - making it suitable for LCD gamma correction reference buffering and portable instrumentation.
For engineers reviewing the OPA2743EA/250 datasheet, OPA2743EA/250 pinout, OPA2743EA/250 application, or OPA2743EA/250 equivalent, key selection criteria include rail-to-rail I/O performance at 12V, low input bias current (1pA), full-spectrum CMRR (84dB), thermal stability across –40°C to +85°C, and MSOP-8 package compatibility with space-constrained analog signal chains.
Technical Context
The OPA2743EA/250 employs a complementary CMOS input stage enabling rail-to-rail input operation with a 500mV transition region where both N- and P-channel pairs are active - resulting in predictable but region-dependent CMRR and THD behavior. Its class AB output stage delivers ±20mA output current and sustains >100kHz small-signal bandwidth into 1kΩ loads while maintaining 86dB open-loop gain.
Designed for unity-gain stability, the device features internal compensation and supports capacitive load drive up to 1000pF; stability under unity-gain conditions is enhanced by adding a 20Ω series resistor inside the feedback loop. Input protection diodes clamp signals exceeding supply rails by >300mV, requiring external current limiting to ≤10mA for overvoltage events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 7MHz - enables stable closed-loop operation up to ~5MHz at G = +2 without peaking. |
| Slew Rate | 10V/µs - supports 1Vpp signals up to ~1.6MHz before slew limiting dominates distortion. |
| Input Bias Current | 1pA (typ) - preserves high-impedance sensor node accuracy and minimizes offset drift in precision integrators. |
| CMRR | 84dB (full-scale) - rejects common-mode noise in single-supply systems with shared ground references. |
| Output Swing | Within 100mV of rails (RL = 100kΩ) - maximizes dynamic range in 3.3V or 5V data acquisition front-ends. |
| Quiescent Current | 1.1mA per amplifier - enables dual-channel operation in battery-powered equipment with <2.5mA total supply draw. |
| Supply Range | 3.5V–12V single or ±1.75V–±6V dual - supports direct interface with 10V LCD bias rails and industrial 5V/12V buses. |
Pinout & Package
OPA2743EA/250 is packaged in an 8-pin VSSOP (DGK) - a 3mm × 3mm, 0.65mm pitch surface-mount package with exposed thermal pad, rated MSL Level-2-260°C-1 year, and RoHS-compliant NiPdAuAg finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Out A) | Amplifier A output | Delivers rail-to-rail buffered signal; capable of ±20mA drive into 1kΩ loads. |
| 2 (–In A) | Inverting input A | High-impedance node (5TΩ || 4pF); accepts inputs 100mV beyond V– or V+ rails. |
| 3 (+In A) | Non-inverting input A | Matches –In A characteristics; used for unity-gain buffer or differential sensing configurations. |
| 4 (V–) | Negative supply rail | Reference for dual-supply operation; connects to ground in single-supply designs. |
| 5 (V+) | Positive supply rail | Accepts 3.5V–12V; bypassing with 1000pF ceramic + 1µF tantalum recommended. |
| 6 (+In B) | Non-inverting input B | Independent channel input; electrically isolated from Channel A except via shared supply pins. |
| 7 (–In B) | Inverting input B | Same specs as Pin 2; supports independent gain-setting networks per channel. |
| 8 (Out B) | Amplifier B output | Functionally identical to Pin 1; enables dual-channel signal conditioning on one die. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in low-voltage (3.5V) and high-voltage (12V) systems without level-shifting circuitry. |
| 1pA input bias current | Minimizes voltage error in high-source-impedance applications such as photodiode transimpedance amplifiers or pH probe interfaces. |
| 7MHz GBW with unity-gain stability | Eliminates need for external compensation; supports fast-settling filters and anti-aliasing stages in 100ksps data converters. |
| 1.1mA quiescent current per amplifier | Allows dual-channel operation in handheld test equipment with <2.5mA total analog front-end consumption. |
| Specified from –40°C to +85°C | Guarantees parametric performance across automotive cabin and industrial control environments without derating. |
Applications
| LCD Gamma Reference Buffer | Portable Instrumentation Front-End |
|---|---|
|
Use Scenario: Driving parallel strings of LCD source driver DAC reference inputs in laptop displays using a 10V supply. IC Role / Device Role / Timing Role: Dual-channel rail-to-rail output buffer providing stable, low-drift voltage references for grayscale DACs. Use Value: Output swing within 100mV of 0V and 10V rails preserves full 10-bit DAC code resolution; 1pA bias current prevents reference loading errors. |
Use Scenario: Signal conditioning for battery-powered multimeters or handheld oscilloscope probes. IC Role / Device Role / Timing Role: Dual-channel amplifier for simultaneous AC-coupled sensor signal amplification and DC-offset adjustment. Use Value: 1.1mA per amplifier enables >100-hour battery life; 7MHz GBW supports accurate 1MHz sine wave measurement with <0.1% THD+N. |
| Automotive Cabin Sensor Interface | Active Filter for Data Acquisition |
|
Use Scenario: Amplifying low-level outputs from cabin temperature or humidity sensors in vehicles operating from 12V battery rails. IC Role / Device Role / Timing Role: Precision dual op-amp configured as programmable-gain amplifier and anti-alias filter driver. Use Value: Full-spectrum 84dB CMRR rejects ignition noise; rail-to-rail I/O accommodates wide sensor output ranges without external biasing. |
Use Scenario: Implementing 2nd-order Sallen-Key low-pass filters preceding SAR ADCs in industrial PLC analog input modules. IC Role / Device Role / Timing Role: Dual op-amp serving as unity-gain buffer and filter integrator in cascaded anti-aliasing topology. Use Value: Unity-gain stability and 10V/µs slew rate ensure <1µs settling to 0.01% for 5V step inputs; low noise (30nV/√Hz) preserves SNR in 16-bit systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel rail-to-rail operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Chopper-stabilized architecture; 0.02µV/°C offset drift vs. OPA2743EA/250's ±8µV/°C; lower 1/f noise but 350kHz GBW. | Better for µV-level DC precision (e.g., weigh scales); unsuitable for >500kHz signal paths due to chopping artifacts. | Select OPA2333AIDR when ultra-low drift dominates over speed; choose OPA2743EA/250 for mixed-signal timing-critical buffering. |
| LMV722MMX/NOPB | Lower supply range (2.7V–5.5V); 10MHz GBW but only 1.5V/µs slew rate; 80dB CMRR vs. 84dB; 65°C/W θJA in same MSOP-8. | Optimized for 3.3V logic-compatible systems; insufficient output drive for 12V LCD gamma rails. | Use LMV722MMX/NOPB in cost-sensitive 3.3V IoT nodes; retain OPA2743EA/250 for 12V industrial or display applications. |
Compared with OPA2333AIDR and LMV722MMX/NOPB, OPA2743EA/250 uniquely balances 7MHz bandwidth, 12V operation, rail-to-rail I/O, and 1pA bias current - making it the only option among the three qualified for LCD gamma correction and high-dynamic-range portable instrumentation simultaneously.
Availability
OPA2743EA/250 is available at Aetrix Electronics and suitable for LCD panel manufacturing, portable test equipment design, and automotive cabin sensor signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2743EA/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 is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in high-performance op-amps and precision signal chain solutions.
The OPA2743EA/250 belongs to TI's OPA743 family - engineered specifically for rail-to-rail, low-power, high-speed analog signal conditioning in 12V display, industrial, and portable systems where dynamic range and supply flexibility are critical.
FAQ
What is the maximum supply voltage rating for OPA2743EA/250?
The absolute maximum supply voltage for OPA2743EA/250 is 13.2V between V+ and V– pins. Continuous operation is specified from 3.5V to 12V single supply or ±1.75V to ±6V dual supply. Exceeding 12V during normal operation risks parametric degradation, though brief transients up to 13.2V are tolerated per absolute maximum ratings.
Does OPA2743EA/250 require external compensation for unity-gain stability?
No, OPA2743EA/250 is internally compensated and unity-gain stable. It maintains phase margin >60° at G = +1 across its full operating temperature and supply range. No external compensation components are needed, though a 20Ω resistor in series with the feedback path improves capacitive load drive up to 1000pF.
Can OPA2743EA/250 drive a 1kΩ load rail-to-rail?
Yes - OPA2743EA/250 delivers output swing within 325mV of each rail when driving a 1kΩ load, while maintaining ≥86dB open-loop gain. This meets rail-to-rail output requirements for most 12V systems where 95% of full scale is acceptable, such as LCD gamma reference buffering.
What is the thermal resistance (θJA) of the OPA2743EA/250 MSOP-8 package?
The junction-to-ambient thermal resistance (θJA) for OPA2743EA/250 in the VSSOP-8 (DGK) package is 150°C/W, measured under JEDEC-standard PCB conditions (2-layer board, 1in² copper). With proper thermal vias to inner ground planes, actual θJA can be reduced to ~85°C/W in optimized layouts.
Is OPA2743EA/250 suitable for automotive under-hood applications?
OPA2743EA/250 is specified for –40°C to +85°C operation and qualified per AEC-Q200 stress testing for passive components, but it is not AEC-Q100 qualified as an integrated circuit. It is appropriate for automotive cabin applications (e.g., infotainment, HVAC sensors), but not for under-hood engine control units requiring AEC-Q100 Grade 0 or 1 qualification.
OPA2743EA/250 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- 7 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 1.1mA (x2 Channels)
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 3.5 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA2743EA/250 FAQ
1.How can I place an order for OPA2743EA/250 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2743EA/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 OPA2743EA/250 reliable?
The price and inventory of OPA2743EA/250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2743EA/250 is usually 5 days.
3.What payment methods are accepted for OPA2743EA/250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2743EA/250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2743EA/250?
OPA2743EA/250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2743EA/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 OPA2743EA/250?
For technical support, including OPA2743EA/250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2743EA/250 requirements.
6.How does Aetrix verify that OPA2743EA/250 is sourced from the original manufacturer or authorized distributors?
All OPA2743EA/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 OPA2743EA/250 meets industry standards.
7.What is the process for return or replacement of OPA2743EA/250?
All OPA2743EA/250 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2743EA/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 OPA2743EA/250 part is unused and in its original packaging.
Return procedure for OPA2743EA/250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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