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Texas Instruments OPA2743EA/2K5
- Part No.:
- OPA2743EA/2K5
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2743EA/2K5.pdf
- Description:
- IC CMOS 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,373
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Product details
Overview
OPA2743EA/2K5 from Texas Instruments is a dual-channel, rail-to-rail input/output CMOS operational amplifier optimized for 3.5V to 12V single-supply or ±1.75V to ±6V dual-supply operation. It delivers 7MHz gain-bandwidth, 10V/µs slew rate, 1.1mA quiescent current per amplifier, and 1pA input bias current-enabling high-precision signal conditioning in LCD gamma correction buffers and automotive sensor interfaces.
For engineers reviewing the OPA2743EA/2K5 datasheet, OPA2743EA/2K5 pinout, OPA2743EA/2K5 application, or OPA2743EA/2K5 equivalent, key selection criteria include rail-to-rail I/O swing within 100mV of rails at light loads, low THD+N (0.0008% @ 6kHz), and guaranteed operation from –40°C to +85°C in the MSOP-8 package.
Technical Context
The OPA2743EA/2K5 employs a complementary differential input stage enabling rail-to-rail common-mode range extension beyond supply rails by 100mV, with a defined transition region between (V+)–2.1V and (V+)–1.4V where both N- and P-channel pairs conduct. Its class AB output stage supports rail-to-rail swing down to 100mV at 100kΩ and 325mV at 1kΩ while maintaining >86dB open-loop gain.
Designed for unity-gain stability, it drives up to 1000pF capacitive loads and supports robust operation with input overvoltage protection via internal ESD diodes rated for ≤10mA current when inputs exceed rails by ≤300mV. The device is fully specified across its full supply and temperature range without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 7MHz - enables stable closed-loop operation up to ~5MHz in G=+2 configuration with adequate phase margin |
| Slew Rate | 10V/µs - supports clean 1Vpp signals up to ~1.6MHz without slew-induced distortion |
| Input Bias Current | 1pA (typ) - minimizes voltage error in high-impedance sensor and DAC reference circuits |
| Output Swing (100kΩ) | Within 100mV of rails - preserves full dynamic range in low-voltage, single-supply systems |
| Quiescent Current | 1.1mA per amplifier - allows battery-powered portable equipment operation for extended duration |
| CMRR | 84dB (typ) - rejects common-mode noise in automotive and industrial transducer amplifiers |
| THD+N | 0.0008% @ 6kHz - meets audio-grade fidelity requirements in active filters and test equipment |
Pinout & Package
VSSOP-8 (DGK) package: ultra-thin, 3mm × 3mm body, 0.65mm pitch, thermal resistance θJA = 150°C/W, moisture sensitivity level (MSL) 2–260°C/1 year.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input B | High-impedance node for feedback network connection in channel B |
| 2 | Non-inverting Input B | Reference or signal input node for channel B; accepts rail-to-rail common-mode voltages |
| 3 | Output B | Class AB output capable of sourcing/sinking ±20mA into resistive loads |
| 4 | V– | Negative supply rail; must be bypassed with 1000pF ceramic + 1µF tantalum |
| 5 | V+ | Positive supply rail; shared by both amplifiers; same bypassing requirement as V– |
| 6 | Non-inverting Input A | Signal input for channel A; identical electrical characteristics to pin 2 |
| 7 | Inverting Input A | Feedback node for channel A; matches pin 1 in impedance and voltage range |
| 8 | Output A | Independent output stage for channel A; no crosstalk with channel B above –60dB at 10kHz |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends 100mV beyond V+ and V− - eliminates external level-shifting in 3.3V/5V microcontroller interfaces |
| Low input bias current | 1pA typical - ensures <1µV error in 1MΩ source impedance applications like piezoelectric transducers |
| 12V operation capability | Rated up to 12V single supply - supports direct integration into LCD panel gamma reference chains powered from 10V supplies |
| Capacitive load drive | Stable with up to 1000pF - enables direct buffering of ADC input capacitance without external isolation resistors |
| No phase inversion on overvoltage | Maintains correct polarity even when inputs exceed rails (with current limiting) - prevents latch-up in fault-tolerant sensor front-ends |
Applications
| LCD Gamma Correction Reference Buffer | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Driving parallel strings of LCD source driver DAC reference inputs in laptop/desktop panels requiring 6–8 buffered voltage levels (GMA1–GMA10). IC Role / Device Role / Timing Role: Dual-channel rail-to-rail buffer providing stable, low-noise DC references while absorbing DAC switching glitches via local 100nF charge reservoirs. Use Value: 325mV output swing headroom at 1kΩ load ensures full 10V dynamic range utilization; 1pA bias current prevents reference drift across temperature. | Use Scenario: Amplifying low-level analog outputs from pressure, temperature, or position sensors in engine control units and ADAS subsystems. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with rail-to-rail input enabling direct connection to 0–5V sensor outputs without level-shifting circuitry. Use Value: 84dB CMRR rejects engine compartment noise; 1.1mA quiescent current supports always-on diagnostic monitoring modes. |
| Portable Medical Instrumentation | Industrial Data Acquisition Front-End |
Use Scenario: Signal conditioning for handheld ECG, pulse oximeter, or glucose meter analog front-ends powered from single-cell Li-ion batteries (3.0–4.2V). IC Role / Device Role / Timing Role: Low-power, high-accuracy amplifier stage acquiring biopotential signals with minimal offset drift and noise. Use Value: 0.0008% THD+N preserves waveform fidelity; rail-to-rail output maximizes ADC utilization in 3.3V systems. | Use Scenario: Buffering and scaling outputs from RTDs, thermocouples, or strain gauges in PLC analog input modules operating from 24V industrial rails. IC Role / Device Role / Timing Role: Isolation and gain-setting amplifier interfacing high-impedance sensors to SAR ADCs with 16-bit+ resolution. Use Value: 7MHz GBW supports anti-alias filtering up to 1MHz; 10V/µs slew rate handles fast transient events without distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Zero-drift architecture; 0.02µV/°C offset drift vs. OPA2743EA/2K5's ±8µV/°C; lower 1/f noise but 350kHz GBW | Better for DC-critical applications (e.g., weigh scales); unsuitable for >500kHz signal paths | Select OPA2333AIDR only when sub-µV offset stability over temperature is mandatory and bandwidth <400kHz suffices |
| AD8602ARZ | Higher 10MHz GBW and 5V/µs slew rate; 2pA bias current; wider 2.7–6V supply range; no 12V rating | Preferred for higher-speed active filters; incompatible with 10–12V LCD gamma supplies | Choose AD8602ARZ for 5V systems needing faster settling; avoid where 12V operation or ultra-low bias current is required |
Compared with OPA2333AIDR and AD8602ARZ, the OPA2743EA/2K5 uniquely balances 12V operation, 1pA bias current, and 7MHz bandwidth-making it optimal for LCD reference buffering and automotive sensor interfaces where supply voltage headroom and input impedance are critical.
Availability
OPA2743EA/2K5 is available at Aetrix Electronics and suitable for LCD gamma correction, automotive sensor signal conditioning, and portable medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2743EA/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 is a global semiconductor leader delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The OPA2743EA/2K5 belongs to TI's precision op-amp portfolio designed specifically for high-fidelity, low-power signal conditioning in space-constrained, wide-supply applications such as display reference buffers and automotive sensor interfaces.
FAQ
What is the maximum supply voltage rating for the OPA2743EA/2K5?
The OPA2743EA/2K5 has an absolute maximum supply voltage of 13.2V across V+ and V– terminals. Its specified operating range is 3.5V to 12V single supply or ±1.75V to ±6V dual supply. Operation at 12V is fully characterized and supported across –40°C to +85°C, making it suitable for 10V LCD panel supplies with margin.
Does the OPA2743EA/2K5 support rail-to-rail output swing under heavy load conditions?
Yes, the OPA2743EA/2K5 delivers rail-to-rail output swing within 100mV of V+ and V– when driving ≥100kΩ loads. Under heavier 1kΩ loads, output swing degrades to within 325mV of each rail while maintaining >86dB open-loop gain-verified across temperature and supply voltage per the SBOS201 datasheet.
Can the OPA2743EA/2K5 drive capacitive loads without external compensation?
The OPA2743EA/2K5 is stable driving up to 1000pF pure capacitive loads. For unity-gain configurations with >100pF loads, TI recommends adding a 10Ω–20Ω series resistor inside the feedback loop (as shown in Figure 4 of SBOS201) to suppress ringing while preserving DC accuracy and settling performance.
What is the input common-mode voltage range specification for the OPA2743EA/2K5?
The OPA2743EA/2K5 features rail-to-rail input with a common-mode range extending (V–) – 0.1V to (V+) + 0.1V at room temperature. This is achieved via complementary N- and P-channel input stages, with a defined 500mV transition region near (V+) – 1.9V to (V+) – 1.4V where both stages conduct-critical for maintaining CMRR and THD in precision applications.
Is the OPA2743EA/2K5 pin-compatible with other dual op-amps in MSOP-8 packages?
No documented pin-compatible alternatives exist for the OPA2743EA/2K5 in the MSOP-8 (DGK) package. Its pinout-(1)–InB, (2)+InB, (3)OutB, (4)V–, (5)V+, (6)+InA, (7)–InA, (8)OutA-is specific to the OPA2743 family. Substitution requires schematic and layout review; OPA2333AIDR and AD8602ARZ use different pin assignments and are not drop-in replacements.
OPA2743EA/2K5 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/2K5 FAQ
1.How can I place an order for OPA2743EA/2K5 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2743EA/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 OPA2743EA/2K5 reliable?
The price and inventory of OPA2743EA/2K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2743EA/2K5 is usually 5 days.
3.What payment methods are accepted for OPA2743EA/2K5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2743EA/2K5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2743EA/2K5?
OPA2743EA/2K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2743EA/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 OPA2743EA/2K5?
For technical support, including OPA2743EA/2K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2743EA/2K5 requirements.
6.How does Aetrix verify that OPA2743EA/2K5 is sourced from the original manufacturer or authorized distributors?
All OPA2743EA/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 OPA2743EA/2K5 meets industry standards.
7.What is the process for return or replacement of OPA2743EA/2K5?
All OPA2743EA/2K5 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2743EA/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 OPA2743EA/2K5 part is unused and in its original packaging.
Return procedure for OPA2743EA/2K5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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