OPA4743UAG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments OPA4743UAG4 is a quad-channel, rail-to-rail output general-purpose op-amp with 7 MHz bandwidth and 84 dB CMRR typical in a 14-pin SOIC package. Bias current is just 10 nA maximum, ideal for high-impedance signal conditioning. From $1.95, in stock, worldwide shipping available.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- OPA4743UAG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of OPA4743UAG4?
- Quad-channel rail-to-rail output (RRO) configuration in a 14-pin SOIC-14 package enables 4 independent signal conditioning stages with output swing to within millivolts of both supply rails
- Ultra-low 10 nA maximum input bias current minimizes offset errors in high-impedance sensor interfaces, photodiode amplifiers, and bridge transducer circuits
- 7 MHz gain-bandwidth product with 84 dB typical CMRR and internal frequency compensation delivers stable, low-noise amplification from single 3 V to 5.5 V supply rails
What is OPA4743UAG4 used for?
The OPA4743UAG4 is designed for precision signal conditioning in battery-powered instruments, portable data acquisition systems, and industrial sensor interfaces where 4 simultaneous rail-to-rail output channels with 7 MHz bandwidth and 10 nA bias current are required. Its single 3 V to 5.5 V supply compatibility and SOIC-14 package make it suitable for analog front-end stages in medical monitors, audio signal chains, and photodiode amplifier arrays.
What are the specifications of OPA4743UAG4?
| Pbfree Code | No |
| YTEOL | 15 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.00001 µA |
| Bias Current-Max (IIB) @25C | 0.00001 µA |
| Common-mode Reject Ratio-Min | 66dB |
| Common-mode Reject Ratio-Nom | 84dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 7000 µV |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Low-Bias | YES |
| Low-Offset | NO |
| Micropower | NO |
| Neg Supply Voltage Limit-Max | -6.6 V |
| Neg Supply Voltage-Nom (Vsup) | -5 V |
| Number of Functions | 4 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | RAIL |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 10V/us |
| Supply Current-Max | 6.8mA |
| Supply Voltage Limit-Max | 6.6V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Unity Gain BW-Nom | 7000 |
| Voltage Gain-Min | 19950 |
| Wideband | NO |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
| Country of Origin | Malaysia |
Where can I find the OPA4743UAG4 datasheet?
OPA4743UAG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for OPA4743UAG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What gain-bandwidth product and input bias current spec does OPA4743UAG4 offer for precision amplifier designs?
The OPA4743UAG4 provides a 7 MHz gain-bandwidth product (GBP) and a maximum input bias current (IIB) of just 10 nA (0.00001 µA) at 25°C. This combination suits precision amplifier stages driving high-impedance sensors, where a 10 nA maximum bias error keeps offset voltage contributions below 10 µV across 1 MΩ source impedances typical in photodiode or pH electrode interfaces.
How does rail-to-rail output in OPA4743UAG4 benefit single-supply ADC driver applications?
The rail-to-rail output (RRO) architecture of OPA4743UAG4 allows the output to swing to within a few millivolts of both the positive and negative supply rails, maximizing the usable signal range when driving 12-bit or 16-bit ADCs from a single 3.3 V or 5 V supply. This eliminates the output headroom waste common to non-RRO op-amps, effectively providing 200 mV to 300 mV more dynamic range at low supply voltages.
Which supply voltage range does OPA4743UAG4 support, and how does this affect circuit compatibility?
OPA4743UAG4 operates from a single supply of 3 V to 5.5 V or a dual supply of ±1.5 V to ±2.75 V, covering standard 3.3 V and 5 V logic and analog supply rails. The 66 dB minimum CMRR and 84 dB typical CMRR hold across this range, ensuring rejection of power supply noise in mixed-signal boards where digital switching noise couples into the analog supply plane.
For a 4-channel industrial sensor signal chain, how does OPA4743UAG4 compare to using 4 discrete single op-amps?
Using OPA4743UAG4 consolidates 4 amplifier channels into a single 14-pin SOIC-14 footprint measuring approximately 8.65 mm × 3.91 mm, compared to four separate 5-pin SOT-23 or 8-pin SOIC-8 packages occupying 2× to 3× more PCB area. This integration reduces board space, eliminates 4 separate decoupling capacitor networks, and simplifies layout for 4-channel bridge sensor amplifiers, 4-axis servo feedback, or quad-channel pH measurement systems.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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