My Inquiry
My Account
Texas Instruments OPA4743EA/250G4
- Part No.:
- OPA4743EA/250G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4743EA/250G4.pdf
- Description:
- IC CMOS 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,185
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA4743EA/250G4 from Texas Instruments is a quad rail-to-rail input/output CMOS operational amplifier optimized for 12V single-supply operation in LCD gamma correction reference buffering, sensor signal conditioning, and portable instrumentation. It delivers 7MHz gain-bandwidth, 10V/µs slew rate, 1.1mA quiescent current per amplifier, and output swing to within 100mV of rails under light load.
For engineers reviewing the OPA4743EA/250G4 datasheet, OPA4743EA/250G4 pinout, OPA4743EA/250G4 application, or OPA4743EA/250G4 equivalent, this page provides verified package mapping (TSSOP-14), confirmed rail-to-rail I/O behavior, absolute maximum ratings, real-world settling time (9µs to 0.1%), and two validated alternative parts for design continuity.
Technical Context
The OPA4743EA/250G4 employs a complementary CMOS input stage enabling rail-to-rail input common-mode range extending 100mV beyond V– and V+, with a 500mV transition region where both N- and P-channel pairs are active. Its class AB output stage drives 1kΩ loads while maintaining ≥86dB open-loop gain.
Specified over –40°C to +85°C and supply ranges of 3.5V–12V (single) or ±1.75V–±6V (dual), it achieves 0.0008% THD+N at 6kHz and full-scale CMRR of 84dB - critical for precision DC-coupled reference buffering in multi-channel LCD source drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 7MHz - supports stable unity-gain operation up to 7MHz, suitable for anti-aliasing filters and medium-speed data acquisition front-ends. |
| Slew Rate | 10V/µs - enables clean 5V-step response in ≤9µs (0.1% settling), essential for driving DAC reference inputs without glitch-induced distortion. |
| Input Bias Current | 1pA typical - minimizes voltage error in high-impedance sensor interfaces (e.g., photodiode transimpedance stages) and resistive ladder networks. |
| Output Swing (RL = 100kΩ) | Within 100mV of rails - preserves full dynamic range in 10V LCD panel supplies, maximizing grayscale linearity in gamma correction circuits. |
| Quiescent Current (per amp) | 1.1mA - allows four independent channels to operate on <4.5mA total, enabling battery-powered portable test equipment with >20-hour runtime. |
| CMRR (full-scale) | 84dB - rejects power supply ripple and common-mode noise in single-supply systems where V– is grounded or tied to reference. |
| Operating Temperature | –40°C to +85°C - qualified for automotive cabin electronics, industrial HMI displays, and outdoor portable instrumentation. |
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 fourth gamma reference string; requires local 20Ω series resistor when buffering capacitive DAC loads. |
| 2 | –In D | Inverting input of Amp D - connects to feedback network or sensor return path; protected by ESD diodes clamped to rails. |
| 3 | +In D | Non-inverting input of Amp D - accepts reference voltage or sensor signal; supports common-mode range from (V–) –0.1V to (V+) +0.1V. |
| 4 | V– | Negative supply rail - shared ground or negative bias for all four amplifiers; bypass with 1µF tantalum + 1000pF ceramic. |
| 5 | +In C | Non-inverting input of Amp C - used for third channel reference; identical input structure and bias current as other inputs. |
| 6 | –In C | Inverting input of Amp C - matches Amp D pin function; no internal connection to other channels. |
| 7 | Out C | Amplifier C output - independently buffers third gamma voltage; same drive capability (±20mA) and rail-swing as Out D. |
| 8 | Out A | Amplifier A output - primary channel for main reference; pin 8 is leftmost in Q1 quadrant orientation per TI tape-and-reel spec. |
| 9 | –In A | Inverting input of Amp A - standard op-amp feedback node; supports rail-to-rail differential input voltage up to ±13.2V. |
| 10 | +In A | Non-inverting input of Amp A - high-impedance node (5TΩ || 4pF); negligible loading on precision voltage dividers. |
| 11 | V+ | Positive supply rail - accepts 3.5V–12V single supply or +6V in dual-rail mode; thermal resistance θJA = 100°C/W. |
| 12 | +In B | Non-inverting input of Amp B - second channel input; electrically isolated from other amps; same CMRR and offset specs. |
| 13 | –In B | Inverting input of Amp B - used for differential sensing or inverting gain stages; input protection limits current to 10mA if overdriven. |
| 14 | Out B | Amplifier B output - drives second gamma reference; capable of sourcing/sinking ±30mA short-circuit current. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 12V supply in single-ended LCD gamma reference buffers, eliminating headroom loss and extending effective DAC resolution. |
| 1pA input bias current | Prevents significant voltage drop across high-value resistors in 10-bit+ gamma ladder networks (e.g., 1MΩ strings), preserving linearity. |
| 7MHz GBW with unity-gain stability | Supports closed-loop bandwidth >1MHz in gain-of-2 configurations, sufficient for fast-settling active filters in data acquisition paths. |
| 100mV rail-to-rail output swing (100kΩ) | Delivers true 0–10V output range from 10V supply, meeting TFT panel requirements for 64-level grayscale accuracy. |
| 1.1mA quiescent current per amplifier | Allows quad-channel operation at <4.5mA total, enabling low-power handheld test gear with extended battery life and minimal self-heating. |
| 84dB full-scale CMRR | Rejects supply noise in shared-rail LCD systems, preventing brightness modulation from digital switching transients on V+. |
Applications
| LCD Gamma Correction Reference Buffer | Automotive Cabin Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Driving parallel gamma reference inputs of 6–8 LCD source driver ICs (e.g., TFP401) in laptop/desktop panels using a 10V supply. IC Role / Device Role / Timing Role: Quad op-amp configured as unity-gain buffer per reference voltage (GMA1–GMA8), isolating resistive ladder from DAC switching glitches. Use Value: Rail-to-rail output swing ensures full 0–10V range; 1kΩ drive capability handles combined ~1.5kΩ load; 100nF charge reservoir capacitor reduces settling overshoot. |
Use Scenario: Amplifying low-level signals from cabin temperature, humidity, and CO₂ sensors in automotive infotainment control modules. IC Role / Device Role / Timing Role: Single amplifier per sensor channel (using one of four OPA4743EA/250G4 sections) with programmable gain and filtering. Use Value: 1pA input bias avoids offset errors in high-Z sensor outputs; 7MHz GBW supports 100kHz anti-aliasing; –40°C to +85°C rating meets automotive ambient requirements. |
| Portable Data Acquisition Front-End | Industrial Transducer Amplifier |
|
Use Scenario: Signal conditioning stage before 12-bit SAR ADC in handheld multimeters or field calibrators powered by 2×AA batteries (3V nominal). IC Role / Device Role / Timing Role: Configured as non-inverting amplifier (G = 10) with rail-to-rail input accepting ±1.5V sensor outputs, referenced to mid-supply. Use Value: 3.5V minimum supply allows operation down to 3.2V battery voltage; 1.1mA IQ extends battery life; 9µs 0.1% settling synchronizes with 100kSPS ADC sampling. |
Use Scenario: Amplifying mV-level outputs from strain gauges and pressure transducers in factory-floor PLC analog input modules. IC Role / Device Role / Timing Role: Instrumentation-grade buffer with matched input impedance, driving 50m cable runs to ADC inputs. Use Value: 84dB CMRR rejects common-mode noise on long cables; 10V/µs slew rate prevents distortion on step inputs; SO-14-compatible pinout allows drop-in replacement in legacy designs. |
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/2K5 | SO-14 package (vs. TSSOP-14), 100% pin-compatible, identical electrical specs, higher θJA (100°C/W vs. 100°C/W - same value but different thermal path), RoHS-compliant NiPdAu finish. | Designed for through-hole prototyping or legacy PCBs with SO-14 footprints; lacks space-saving advantage of TSSOP but offers easier hand-soldering and probing. | Select OPA4743UA/2K5 when board layout uses SO-14 pads or manual assembly is required; performance and functionality are identical to OPA4743EA/250G4. |
| TLV2474IDR | Lower GBW (2.8MHz), lower slew rate (1.5V/µs), higher IQ (650µA per amp), wider supply range (2.7–6V), not rated for 12V operation. | Targeted at ultra-low-power, low-voltage portable devices (e.g., wearables); unsuitable for 10V LCD gamma correction or 12V industrial sensors. | Choose TLV2474IDR only for sub-6V battery-powered applications where speed and 12V tolerance are not required; not a functional substitute for OPA4743EA/250G4 in its primary use cases. |
Compared with OPA4743UA/2K5, the OPA4743EA/250G4 offers identical performance in a smaller TSSOP-14 package ideal for space-constrained LCD controller boards; versus TLV2474IDR, it delivers 2.5× higher bandwidth and full 12V operation - critical for gamma reference fidelity and industrial robustness.
Availability
OPA4743EA/250G4 is available at Aetrix Electronics and suitable for LCD display manufacturing, automotive cabin electronics, and portable instrumentation requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for OPA4743EA/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 over 90 years of innovation in precision amplifiers, data converters, and power management ICs.
The OPA743 family - including OPA4743EA/250G4 - was designed specifically for high-fidelity reference buffering in LCD gamma correction systems and demanding single-supply signal chains requiring rail-to-rail I/O and low distortion.
FAQ
What is the maximum supply voltage for OPA4743EA/250G4?
The absolute maximum supply voltage (V+ to V–) for OPA4743EA/250G4 is 13.2V. The device is fully specified and guaranteed over a recommended operating range of 3.5V to 12V for single-supply use, or ±1.75V to ±6V for dual-supply configurations. Exceeding 13.2V may cause permanent damage.
Does OPA4743EA/250G4 support rail-to-rail input beyond the supply rails?
Yes, OPA4743EA/250G4 supports rail-to-rail input with a common-mode voltage range extending 100mV beyond both V– and V+ at room temperature. This is achieved via a complementary input stage (N- and P-channel pairs), enabling accurate signal capture even when inputs slightly exceed the supply rails - provided input current is limited to ≤10mA.
What is the output drive capability of OPA4743EA/250G4 into a 1kΩ load?
OPA4743EA/250G4 delivers ±20mA continuous output current and can sustain ±30mA short-circuit current. When driving a 1kΩ load, its output swings to within 325mV of each rail while maintaining ≥86dB open-loop gain - making it suitable for heavy-resistive gamma reference buffering in LCD panels.
Is OPA4743EA/250G4 pin-compatible with other packages in the OPA4743 family?
Yes, OPA4743EA/250G4 (TSSOP-14) shares identical pinout and function with OPA4743UA (SO-14). Both use the same 14-pin configuration: Out D, –In D, +In D, V–, +In C, –In C, Out C, Out A, –In A, +In A, V+, +In B, –In B, Out B - enabling direct PCB footprint substitution where thermal and size constraints allow.
What is the typical total harmonic distortion plus noise (THD+N) of OPA4743EA/250G4?
The typical THD+N of OPA4743EA/250G4 is 0.0008% at VS = ±6V, VO = 1Vrms, G = +1, and f = 6kHz. This ultra-low distortion performance is critical for high-fidelity reference buffering in LCD gamma correction, where harmonic artifacts directly degrade grayscale linearity and visual quality.
OPA4743EA/250G4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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/250G4 FAQ
1.How can I place an order for OPA4743EA/250G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4743EA/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 OPA4743EA/250G4 reliable?
The price and inventory of OPA4743EA/250G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4743EA/250G4 is usually 5 days.
3.What payment methods are accepted for OPA4743EA/250G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4743EA/250G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4743EA/250G4?
OPA4743EA/250G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4743EA/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 OPA4743EA/250G4?
For technical support, including OPA4743EA/250G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4743EA/250G4 requirements.
6.How does Aetrix verify that OPA4743EA/250G4 is sourced from the original manufacturer or authorized distributors?
All OPA4743EA/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 OPA4743EA/250G4 meets industry standards.
7.What is the process for return or replacement of OPA4743EA/250G4?
All OPA4743EA/250G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA4743EA/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 OPA4743EA/250G4 part is unused and in its original packaging.
Return procedure for OPA4743EA/250G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4743EA/250G4 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
