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Texas Instruments OPA2743EA/250G4
- Part No.:
- OPA2743EA/250G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2743EA/250G4.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,446
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Product details
Overview
OPA2743EA/250G4 from Texas Instruments is a dual, rail-to-rail input/output CMOS operational amplifier optimized for 3.5V–12V single-supply or ±1.75V–±6V dual-supply operation. It delivers 7MHz gain-bandwidth, 10V/µs slew rate, 1.1mA quiescent current per amplifier, and 84dB full-scale CMRR - enabling high-fidelity signal conditioning in LCD gamma correction buffers and automotive sensor interfaces.
For engineers reviewing the OPA2743EA/250G4 datasheet, OPA2743EA/250G4 pinout, OPA2743EA/250G4 application, or OPA2743EA/250G4 equivalent, this page provides verified package mapping (MSOP-8), confirmed dual-amplifier topology, rail-to-rail I/O behavior at 12V, output swing to within 100mV of rails under light load, and validated alternatives for precision low-power analog signal chains.
Technical Context
The OPA2743EA/250G4 implements a complementary input stage-N-channel and P-channel differential pairs-to extend common-mode voltage range beyond supply rails by 100mV, with a defined 500mV transition region where both pairs operate. Its class AB output stage supports rail-to-rail swing into 1kΩ loads while maintaining >86dB open-loop gain.
Designed for unity-gain stability, it drives up to 1000pF capacitive loads and achieves 0.0008% THD+N at 6kHz. Input bias current remains ultra-low (1pA typ) across –40°C to +85°C, and PSRR exceeds 100µV/V over its full specified supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 7MHz - enables stable closed-loop operation up to 100kHz with G ≥ 10, suitable for active filters and data acquisition front-ends. |
| Slew Rate | 10V/µs - supports fast settling of 5V step inputs in ≤9µs (0.1%), critical for driving SAR ADC sample-and-hold inputs. |
| Input Bias Current | 1pA typical - preserves accuracy in high-impedance transducer amplifier circuits without requiring guard traces or bias compensation. |
| Output Voltage Swing | Within 100mV of rails (RL = 100kΩ) - maximizes dynamic range in 3.3V or 5V systems, especially for single-supply sensor signal conditioning. |
| Quiescent Current | 1.1mA per amplifier - allows dual-channel operation in battery-powered portable equipment with minimal impact on runtime. |
| CMRR | 84dB full-scale - rejects common-mode noise from shared power rails in automotive audio and security system signal paths. |
| Supply Range | 3.5V–12V single or ±1.75V–±6V dual - supports direct interface with 12V LCD panel supplies and legacy ±5V industrial control buses. |
Pinout & Package
OPA2743EA/250G4 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.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V− (Amplifier A) | Negative supply pin for Amplifier A; must be decoupled with 1000pF ceramic + 1µF tantalum to ground. |
| 2 | Inverting Input (A) | High-impedance node accepting signals from −0.1V to V+ + 0.1V; protected by ESD diodes clamping to rails. |
| 3 | Non-inverting Input (A) | Same voltage range and protection as Pin 2; used for unity-gain buffer or non-inverting amplifier configurations. |
| 4 | Output (A) | Capable of sourcing/sinking ±20mA; swings rail-to-rail into ≥100kΩ loads, with 325mV headroom into 1kΩ. |
| 5 | Output (B) | Independent output channel matching Pin 4 performance; enables dual-path signal processing without cross-talk. |
| 6 | Non-inverting Input (B) | Matches Pin 3 functionality for second amplifier; isolated from Channel A except via shared supply pins. |
| 7 | Inverting Input (B) | Matches Pin 2 functionality; differential pair architecture ensures matched offset and drift between channels. |
| 8 | V+ (Both Amplifiers) | Positive supply pin shared by both amplifiers; requires separate bypassing from Pin 1 to minimize inter-channel coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends 100mV beyond V− and V+, enabling direct sensing of signals near supply rails in single-supply systems. |
| Ultra-low input bias current | 1pA typical at 25°C - eliminates significant error in photodiode or piezoelectric transducer amplifiers with >1GΩ source impedances. |
| 12V operation capability | Specified up to 12V single supply - permits direct use in LCD gamma reference buffers without level-shifting or external regulators. |
| Low THD+N | 0.0008% at 6kHz - preserves signal integrity in audio preamplifier stages and high-resolution data acquisition channels. |
| Capacitive load drive | Stable with up to 1000pF - simplifies interfacing to long PCB traces or ADC input capacitance without external isolation resistors. |
Applications
| LCD Gamma Correction Reference Buffer | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Driving parallel strings of LCD source driver DACs requiring precise, stable reference voltages across 6–8 channels. IC Role / Device Role / Timing Role: Dual-channel rail-to-rail output buffer delivering low-noise, low-drift references to multiple DACs simultaneously. Use Value: 12V operation and 325mV rail-to-rail swing into 1kΩ loads ensure full grayscale dynamic range without headroom loss. |
Use Scenario: Amplifying low-level outputs from temperature, pressure, or position sensors in automotive cabin modules. IC Role / Device Role / Timing Role: Dual op-amp providing gain, filtering, and level-shifting before ADC sampling in 5V or 12V ECUs. Use Value: 1.1mA per amplifier enables always-on sensor monitoring in battery-sensitive applications without compromising accuracy. |
| Portable Equipment Analog Front-End | Active Filter for Test Equipment |
Use Scenario: Signal conditioning in handheld multimeters, portable oscilloscopes, or battery-powered data loggers. IC Role / Device Role / Timing Role: Dual-channel amplifier implementing programmable gain stages and anti-aliasing filtering. Use Value: 7MHz GBW and 10V/µs slew rate support accurate measurement of kHz-range signals with minimal phase distortion. |
Use Scenario: Implementing 2nd-order low-pass or band-pass filters in benchtop signal generators and spectrum analyzers. IC Role / Device Role / Timing Role: Unity-gain stable op-amp configured in Sallen-Key or multiple-feedback topologies. Use Value: Low input bias current prevents filter pole drift; rail-to-rail I/O maintains full signal amplitude across filter passband. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-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/250G4's ±8µV/°C; 350kHz GBW vs. 7MHz. | Better DC precision but lower bandwidth; unsuitable for >100kHz active filters or fast-settling data acquisition. | Select when ultra-low offset drift dominates over speed; avoid when 7MHz GBW or 10V/µs slew is required. |
| TLV2462IDR | Lower supply range (2.7–6V); 6.4MHz GBW; 1.6mA IQ per amp; no 12V rating. | Not rated for 12V operation or automotive temperature range (–40°C to +85°C fully specified). | Acceptable for 3.3V/5V portable designs where 12V compatibility and extended temp range are not needed. |
Compared with OPA2743EA/250G4, OPA2333AIDR trades bandwidth and slew rate for chopper-based DC stability, while TLV2462IDR offers cost-effective performance only within narrower voltage and temperature limits - neither is pin-compatible, and both require layout review for supply and thermal design changes.
Availability
OPA2743EA/250G4 is available at Aetrix Electronics and suitable for LCD gamma correction, automotive sensor interfaces, and portable instrumentation requiring stable component supply with guaranteed 12V operation and rail-to-rail I/O performance.
Supply support for OPA2743EA/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 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/250G4 belongs to TI's OPA743 family - designed specifically for high-speed, low-power, rail-to-rail operational amplification in 12V LCD panels, automotive electronics, and portable test equipment.
FAQ
What is the maximum supply voltage for OPA2743EA/250G4?
The absolute maximum supply voltage for OPA2743EA/250G4 is 13.2V (V+ to V−), but its specified operating range is 3.5V to 12V for single supply or ±1.75V to ±6V for dual supply. Operation at 12V is fully characterized across –40°C to +85°C, making OPA2743EA/250G4 suitable for direct integration into 12V LCD panel power domains without regulation.
Does OPA2743EA/250G4 support rail-to-rail input and output simultaneously?
Yes, OPA2743EA/250G4 supports rail-to-rail input common-mode range (extending 100mV beyond V− and V+) and rail-to-rail output swing (within 100mV of rails into 100kΩ). This simultaneous capability enables full dynamic range utilization in single-supply systems such as portable medical sensors and battery-powered data loggers using the OPA2743EA/250G4.
What is the thermal resistance (θJA) of the OPA2743EA/250G4 package?
The OPA2743EA/250G4 uses the VSSOP-8 (DGK) package with a thermal resistance θJA of 150°C/W, measured under standard JEDEC conditions (2-layer board, 1in² copper). This value is confirmed in the official SBOS201 datasheet and directly impacts maximum allowable power dissipation - for example, at 1.7mA per amplifier (2.4V × 1.7mA × 2 = 8.16mW), junction temperature rise remains under 1.2°C above ambient.
Can OPA2743EA/250G4 drive heavy capacitive loads without oscillation?
OPA2743EA/250G4 is stable driving up to 1000pF pure capacitive load in unity-gain configuration. For loads exceeding this, a 10Ω–20Ω series resistor inside the feedback loop (as shown in Figure 4 of SBOS201) improves phase margin without degrading DC accuracy. This behavior is verified in the Typical Characteristics section and applies directly to OPA2743EA/250G4's MSOP-8 implementation.
Is OPA2743EA/250G4 pin-compatible with other dual op-amps in SO-8 packages?
No - OPA2743EA/250G4 uses the VSSOP-8 (DGK) package with different pin spacing (0.65mm) and footprint than standard SO-8 (1.27mm pitch). While the pin functions match industry-standard dual op-amp assignments (e.g., Pin 1 = V−, Pin 2 = In−A, etc.), physical replacement requires PCB redesign. The SO-8 variant OPA2743UA shares identical pinout but differs mechanically - OPA2743EA/250G4 is not a drop-in substitute.
OPA2743EA/250G4 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:
- Discontinued at Digi-Key
- 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/250G4 FAQ
1.How can I place an order for OPA2743EA/250G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2743EA/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 OPA2743EA/250G4 reliable?
The price and inventory of OPA2743EA/250G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2743EA/250G4 is usually 5 days.
3.What payment methods are accepted for OPA2743EA/250G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2743EA/250G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2743EA/250G4?
OPA2743EA/250G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2743EA/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 OPA2743EA/250G4?
For technical support, including OPA2743EA/250G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2743EA/250G4 requirements.
6.How does Aetrix verify that OPA2743EA/250G4 is sourced from the original manufacturer or authorized distributors?
All OPA2743EA/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 OPA2743EA/250G4 meets industry standards.
7.What is the process for return or replacement of OPA2743EA/250G4?
All OPA2743EA/250G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2743EA/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 OPA2743EA/250G4 part is unused and in its original packaging.
Return procedure for OPA2743EA/250G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA2743EA/250G4 Tags
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