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Texas Instruments OPA4743UA — Logic ICs

OPA4743UA Quad CMOS Op-Amp, 7 MHz GBW, Rail-to-Rail Output

MPNOPA4743UA
End of Life

Texas Instruments OPA4743UA, quad CMOS rail-to-rail output amplifier, 7 MHz gain bandwidth, 10 V/µs slew rate, 1.1 mA supply (four channels), 14-SOIC package.

$11.2Ref. price · indicative, final on quote
Texas Instruments OPA4743UA datasheet (PDF)
Packaging14-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

OPA4743UA specifications
ParameterValue
Output typeRail-to-Rail
MountingSurface Mount
Amplifier typeCMOS
Voltage - input offset1.5 mV
Voltage - supply span3.5 V
Current - supply1.1mA (x4 Channels)
Current - input bias1 pA
Current - output (Channel)20 mA
Operating temperature-40°C ~ 85°C
Gain bandwidth product7 MHz
PackageTube
Slew rate10V/µs
Case14-SOIC (0.154\", 3.90mm Width)
Number of circuits4

Product details

Quad CMOS op-amp with rail-to-rail output and 7 MHz GBW

Supply range spans 3.5 V to 12 V, making it suitable for single 5 V or dual ±5 V rails.

The 7 MHz gain bandwidth product sets the small-signal bandwidth for a given closed-loop gain. At a gain of +1, the -3 dB bandwidth is approximately 7 MHz; at a gain of +10, it drops to about 700 kHz. The 10 V/µs slew rate determines the large-signal response — a 5 V output step slews in roughly 500 ns. For ADC driver or active filter stages, these numbers define the maximum throughput before distortion rises. Stack the error budget: the 1 pA input bias keeps DC errors negligible in high-impedance sensor interfaces, while the 1.5 mV input offset contributes the dominant DC error term unless nulled.

Frequently asked questions

Can OPA4743UA operate with a single 5V supply?

Yes, the supply range of 3.5 V to 12 V covers single 5 V operation. The rail-to-rail output stage swings within millivolts of both rails, maximizing dynamic range on a single 5 V rail.

What is the OPA4743UA equivalent?

The closest functional peer is the OPA4374AIPWT, also a quad CMOS rail-to-rail op-amp. The OPA4374 offers a 6.5 MHz GBW and 5 V/µs slew rate versus the OPA4743's 7 MHz and 10 V/µs, and it draws 600 µA per channel versus 275 µA per channel. Verify pin compatibility and parametric headroom before substituting.