Amplifiers with Enhanced Accuracy for Industrial Application


The amplifiers support measurement and processing of a wide variety of input signals in test and measurement, medical, and data-acquisition systems

Texas Instruments (TI) introduced three new amplifiers that allow designers to create circuits for error-sensitive applications. Speed and power consumption can enable designers to optimise system performance.

Now designers have a choice to select an amplifier that fit well with their system demand on basis of system voltage, bandwidth and other key features.

  • OPA2810: 27V junction gate field effect transistor (JFET) input dual operational amplifier (op-amp) with 120 MHz bandwidth and offers 500µV max offset voltage.
  • OPA189: 36V zero-drift op amp with 14 MHz bandwidth and is a multiplexer (MUX) friendly.
  • THS3491: 32V current feedback amplifier with 900 MHz small signal bandwidth and offers ±420mA output current.

Amplifiers to minimise temperature errors


With a low maximum drift of 0.02 μV/°C, the OPA189 also minimises temperature error without calibration, increasing system accuracy over an extended temperature range.

These high voltage amplifiers increase system accuracy while reducing the need for external calibration and minimising bill-of-materials (BOM) cost.

The OPA2810 op-amp allows engineers to achieve measurements in data acquisition and signal processing applications with the increasing offset and low voltage noise of 5.7 nV/√Hz for 27V amplifiers in the 100 MHz to 200 MHz bandwidth range.

Lower power consumption

The amplifiers are designed for applications that require high gain and low distortion in power sensitive designs. With suitable signal-to-noise ratio and distortion, these amplifiers allow low power operation in high-speed designs.

Further, engineers can design high resolution, noise sensitive industrial systems with the consumption of 1.3 mA of quiescent current. This is beneficial for analogue input modules, battery and LCD test equipment.

Wider bandwidth and faster speed

The high bandwidths of the amplifiers enable high gain configurations and faster response times for more accurate measurements. To achieve low distortion and high output power levels, designers can use the THS3491 current feedback amplifiers’ wide small signal bandwidth, high slew rate and output current of ±420 mA.

It is capable of 10Vpeak-to-peak output levels at 200 MHz into 100Ω loads for test and measurement systems, such as arbitrary waveform generators, laser diode drivers and high capacitive load drive applications.




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