OPA2343EA/2K5

Voltage - Input Offset:	2mV
Base Part Number:	OPA2343
Supplier Device Package:	8-VSSOP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply, Single/Dual (±):	2.5 V ~ 5.5 V
Current - Output / Channel:	50mA
Current - Supply:	850µA
Series:	MicroAmplifier™
Current - Input Bias:	0.2pA
Gain Bandwidth Product:	5.5MHz
Slew Rate:	6 V/µs
Output Type:	Rail-to-Rail
Number of Circuits:	2
Amplifier Type:	General Purpose
Part Status:	Active
Packaging:	Tape & Reel (TR)

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OPA2343EA/2K5 Application Field and Working Principle

Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

The OPA2343EA/2K5 is an ultra-low power, low-noise, low-drift, internally compensated complementary amplifier designed for applications such as low-power, low-noise analog signal processing and instrumentation applications. This amplifier has been optimized for use in systems where battery life has to be extended or power is limited.The single OPA2343EA/2K5 device offers the two main parts of an instrumentation amplifier; an input stage with low noise, low distortion and high common-mode rejection, and a high performance output stage that buffers and provides low output noise, low distortion and high slew rate. The amplifier is also capable of driving long cables and capacitive loads.The OPA2343EA/2K5 has an input voltage range of up to ±18 V operation, with a typical maximum power consumption of 150 μA at a supply voltage of about 15 V. The common-mode input voltage range is equal to the supply voltage range, making it suitable for both single-ended and dual-supply systems. It has high CMRR, low noise, and excellent linearity over a wide range of input voltages.

Working Principle

The OPA2343EA/2K5 is a current-feedback operational amplifier with a typical noise of 11 nV/ √Hz, making it suitable for low-noise, high-performance amplifier circuits. It features a very fast settling time of 5 μs and a wide gain-bandwidth product of 500 kHz. The output stage includes an emitter-follower transistor to buffer the output of the operational amplifier and provide large output voltage swings and fast slew rates.The micro-power current-feedback operational amplifier architecture of the OPA2343EA/2K5 ensures wide bandwidth and low noise and provides fast recovery from large input signals, while consuming ultra-low power. This is perfect for applications such as active filters, linearization, precise DC measurements, accurate instrumentation and audio playback.The OPA2343EA/2K5 is available in a variety of standard packages, including a 6-lead SOT-23 package, and an 8-lead DFN package. The amplifier is designed to meet the high requirements of a variety of precision applications, from medical instruments to wireless communication and audio systems.

Conclusion

The OPA2343EA/2K5 from Texas Instruments is an ultra-low power, low-noise, low-drift, internally compensated complementary amplifier designed for precision applications. This amplifier has an exceptionally wide bandwidth and low noise, with a exceptional power consumption of ~150 μA, making it suitable for battery-operated precision applications. The amplifier is capable of driving long cables and capacitive loads, and is available in a variety of standard packages.

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