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Texas Instruments OPA4743EA/250
- Part No.:
- OPA4743EA/250
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4743EA/250.pdf
- Description:
- IC CMOS 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:586
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Product details
Overview
OPA4743EA/250 from Texas Instruments is a quad rail-to-rail input/output CMOS operational amplifier optimized for 12V single-supply operation in LCD gamma correction buffers and precision sensor signal conditioning. It delivers 7MHz gain-bandwidth, 10V/µs slew rate, 1.1mA quiescent current per amplifier, and output swing within 100mV of rails under light load - enabling high-fidelity analog buffering in space-constrained automotive display systems.
For engineers reviewing the OPA4743EA/250 datasheet, OPA4743EA/250 pinout, OPA4743EA/250 application, or OPA4743EA/250 equivalent, key selection criteria include its TSSOP-14 package compatibility with high-density PCB layouts, guaranteed –40°C to +85°C operation, 1pA input bias current for high-impedance transducer interfaces, and full characterization across ±1.75V to ±6V dual supplies.
Technical Context
The OPA4743EA/250 implements a complementary CMOS input stage enabling rail-to-rail common-mode input range extending 100mV beyond supply rails, with a defined 500mV transition region where both N- and P-channel pairs are active. Its class AB output stage supports ±20mA drive capability into 1kΩ loads while maintaining >86dB open-loop gain.
Designed for unity-gain stability, it features 0.0008% THD+N at 6kHz and drives up to 1000pF capacitive loads - validated via small-signal overshoot curves and settling time (9µs to 0.1%) measurements at ±6V supply with 5V step input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 7MHz - enables stable closed-loop operation up to 100kHz with gain ≥70 in filter or buffer stages |
| Slew Rate | 10V/µs - supports clean 1Vpp signals up to ~1.6MHz without slew-induced distortion |
| Input Bias Current | 1pA typical - preserves signal integrity in high-Z pH sensors or photodiode amplifiers |
| Output Swing (100kΩ) | Within 100mV of rails - maximizes dynamic range in 3.3V–12V single-supply systems |
| Quiescent Current | 1.1mA per amplifier - allows four-channel operation at <4.5mA total, suitable for battery-powered instrumentation |
| CMRR | 84dB typical - rejects power supply noise in automotive audio preamps and sensor front-ends |
| Supply Range | 3.5V to 12V single or ±1.75V to ±6V dual - interoperable with legacy 5V logic and modern 12V display power rails |
Pinout & Package
TSSOP-14 surface-mount package (Package Drawing PW), 5.0mm × 4.4mm footprint, 0.65mm pitch, moisture sensitivity level 2 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Out D | Amplifier D output - drives gamma reference string or sensor channel D |
| 2 | –In D | Inverting input for amplifier D - accepts feedback or differential signal |
| 3 | +In D | Non-inverting input for amplifier D - connects to reference voltage or sensor |
| 4 | V– | Negative supply rail - shared ground or negative rail for all four amplifiers |
| 5 | +In C | Non-inverting input for amplifier C - isolated from other inputs for multi-channel sensing |
| 6 | –In C | Inverting input for amplifier C - supports differential configuration with matched layout |
| 7 | Out C | Amplifier C output - independent output routing for parallel gamma correction paths |
| 8 | Out A | Amplifier A output - primary buffer output, often used for main reference rail |
| 9 | –In A | Inverting input for amplifier A - configured as unity-gain follower or inverting gain stage |
| 10 | +In A | Non-inverting input for amplifier A - connects directly to DAC reference or sensor node |
| 11 | V+ | Positive supply rail - 12V tolerant, powers all four amplifiers simultaneously |
| 12 | +In B | Non-inverting input for amplifier B - electrically isolated for noise-sensitive analog channels |
| 13 | –In B | Inverting input for amplifier B - supports active filtering with external RC network |
| 14 | Out B | Amplifier B output - dedicated output for secondary reference or feedback path |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends 100mV beyond V+ and V– - eliminates level-shifting circuitry in 3.3V/5V/12V mixed-supply systems |
| Low input bias current (1pA) | Minimizes voltage error across high-value source impedances (>100MΩ) in piezoelectric or electrochemical sensors |
| 12V operation capability | Enables direct interface with LCD panel source drivers requiring 10V reference rails without external regulators |
| Quad-channel integration in TSSOP-14 | Reduces board area by >60% versus discrete SO-8 op-amps for multi-reference gamma correction circuits |
| Specified –40°C to +85°C | Validated performance for under-hood automotive modules and industrial HMI displays |
Applications
| LCD Gamma Correction Buffer | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Driving 6–8 parallel LCD source driver ICs requiring precise, low-drift voltage references for 6-bit grayscale generation. IC Role / Device Role / Timing Role: Quad op-amp configured as rail-to-rail unity-gain buffers for GMA1–GMA8 reference nodes. Use Value: Output swing within 100mV of 12V rail preserves full 11.9V dynamic range; 1.1mA per channel enables thermally efficient 4-channel operation. | Use Scenario: Amplifying low-level signals from oxygen, pressure, or temperature sensors in engine control units. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with 1pA input bias for high-impedance sensor elements. Use Value: 84dB CMRR rejects ignition noise on 12V vehicle power bus; –40°C to +85°C rating ensures reliability across ambient conditions. |
| Portable Data Acquisition Front-End | Active Filter for Test Equipment |
Use Scenario: Battery-powered handheld multimeter or oscilloscope probe amplifier stage. IC Role / Device Role / Timing Role: Low-power quad buffer isolating ADC inputs from multiplexed sensor channels. Use Value: 1.1mA per amplifier enables >100-hour operation on 1000mAh Li-ion; rail-to-rail I/O maintains accuracy across 3.5V–12V battery discharge curve. | Use Scenario: 2nd-order Sallen-Key low-pass filter in benchtop signal generator output stage. IC Role / Device Role / Timing Role: Unity-gain stable amplifier implementing filter transfer function with minimal phase shift. Use Value: 7MHz GBW supports filter cutoffs up to 1MHz; 10V/µs slew rate prevents distortion on 10Vpp test waveforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4743UA | SO-14 package (6.5mm × 9.0mm), higher thermal resistance (100°C/W vs 100°C/W), same electrical specs | Preferred for through-hole prototyping or high-reliability industrial boards with larger pad spacing | Select OPA4743UA when manual soldering or long-term thermal cycling stability outweighs board-area constraints |
| TLV9064IDR | Lower 500µA quiescent current, 10MHz GBW, but only 5V max supply - not 12V rated | Suitable for ultra-low-power 3.3V IoT sensor nodes, not 12V LCD or automotive 12V systems | Choose TLV9064IDR only for new 3.3V designs prioritizing battery life over voltage headroom |
Compared with OPA4743UA and TLV9064IDR, the OPA4743EA/250 uniquely balances 12V operation, TSSOP-14 miniaturization, and full automotive temperature range - making it the sole option for space-constrained, high-voltage gamma correction and dual-supply sensor interfaces.
Availability
OPA4743EA/250 is available at Aetrix Electronics and suitable for LCD display manufacturing, automotive electronics production, and portable instrumentation requiring stable component supply with traceable TI sourcing and full RoHS compliance.
Supply support for OPA4743EA/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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The OPA4743EA/250 belongs to TI's precision op-amp product line engineered specifically for high-voltage, low-noise, rail-to-rail signal conditioning in display timing, sensor front-ends, and data acquisition systems.
FAQ
What is the maximum supply voltage rating for the OPA4743EA/250?
The OPA4743EA/250 has an absolute maximum supply voltage of 13.2V between V+ and V– pins. Its specified operating range is 3.5V to 12V for single supply or ±1.75V to ±6V for dual supply. Exceeding 12V during normal operation risks violating parametric guarantees, though the device can withstand brief transients up to 13.2V without damage per absolute maximum ratings in SBOS201.
Does the OPA4743EA/250 support true rail-to-rail input beyond the supply rails?
Yes, the OPA4743EA/250 features a complementary input stage that extends the common-mode input voltage range to (V–) – 0.1V and (V+) + 0.1V at room temperature. This 100mV beyond-rail capability is explicitly characterized in the Electrical Characteristics table and enables direct interfacing with signals slightly exceeding supply limits - provided input current is limited to ≤10mA using series resistors as shown in Figure 2 of SBOS201.
Can the OPA4743EA/250 drive heavy capacitive loads without oscillation?
The OPA4743EA/250 is characterized to drive up to 1000pF pure capacitive loads while maintaining stability. For unity-gain configurations with >100pF loads, TI recommends inserting a 10Ω–20Ω isolation resistor inside the feedback loop (as shown in Figure 4 of SBOS201) to suppress ringing and improve settling time without affecting DC accuracy.
What is the thermal resistance (θJA) of the OPA4743EA/250 in its TSSOP-14 package?
The OPA4743EA/250 in TSSOP-14 (PW) package has a junction-to-ambient thermal resistance (θJA) of 100°C/W, as specified in the Electrical Characteristics table on page 3 of SBOS201. This value assumes standard JEDEC 2-layer board conditions and enables thermal design for continuous operation at up to 12V supply with 1.1mA per amplifier - resulting in <50°C junction rise above ambient at 25°C ambient.
Is the OPA4743EA/250 pin-compatible with other members of the OPA743 family?
No - the OPA4743EA/250 uses a dedicated 14-pin TSSOP layout optimized for quad functionality, while OPA743 (single) and OPA2743 (dual) use 5-, 8-, or 14-pin packages with different pinouts. Pin mapping differs fundamentally: for example, V+ is pin 11 on OPA4743EA/250 but pin 8 on OPA2743EA/250. Direct substitution requires PCB redesign; only functional equivalence - not pin compatibility - applies across the family.
OPA4743EA/250 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- 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 (x4 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:
- 14-TSSOP
OPA4743EA/250 FAQ
1.How can I place an order for OPA4743EA/250 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4743EA/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 OPA4743EA/250 reliable?
The price and inventory of OPA4743EA/250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4743EA/250 is usually 5 days.
3.What payment methods are accepted for OPA4743EA/250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4743EA/250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4743EA/250?
OPA4743EA/250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4743EA/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 OPA4743EA/250?
For technical support, including OPA4743EA/250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4743EA/250 requirements.
6.How does Aetrix verify that OPA4743EA/250 is sourced from the original manufacturer or authorized distributors?
All OPA4743EA/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 OPA4743EA/250 meets industry standards.
7.What is the process for return or replacement of OPA4743EA/250?
All OPA4743EA/250 units undergo pre-shipment inspection (PSI). If there is an issue with OPA4743EA/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 OPA4743EA/250 part is unused and in its original packaging.
Return procedure for OPA4743EA/250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4743EA/250 Tags
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