Get to know TI's new high-voltage amplifier!

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Get to know TI's new high-voltage amplifier! [Copy link]

Three new amplifiers that combine high speed and precision enable designers to create more accurate circuits for error-sensitive applications. The new devices enable more precise measurements and faster processing of a wide range of input signals in test and measurement, medical and data acquisition systems. Designers can choose the amplifier architecture that meets their system requirements, with input voltage, bandwidth and key features as follows: OPA2810: 27V junction gate field effect transistor (JFET) input dual operational amplifier (op amp), 120MHz bandwidth, 500μV maximum offset voltage.

OPA189: 36V zero-drift op amp, 14MHz bandwidth, multiplexer (MUX) friendly.

THS3491: 32V current feedback amplifier, 900MHz small signal bandwidth, ±420mA output current.

Wider bandwidth, faster speed With up to twice the bandwidth and slew rate of competing devices, TI’s new high-voltage amplifiers offer the following system-level advantages: - The high bandwidth of the OPA2810 and OPA189 enables high-gain configurations and faster response times for more accurate measurements. - Designers can achieve low distortion and high output power levels with the small signal high bandwidth, high slew rate, and ±420 mA output current of the THS3491 current feedback amplifier. For test and measurement systems such as arbitrary waveform generators, laser diode drivers, and high capacitive load drive applications, the THS3491 is capable of achieving a 10V peak-to-peak output level at 200 MHz (100Ω load). Optimizing Precision for Error-Sensitive Applications The superior precision of these high voltage amplifiers improves system accuracy while reducing the need for external calibration and minimizing bill of materials (BOM) cost. Precision advantages include: - The OPA2810 op amp features industry-leading maximum deviation and lowest voltage noise (5.7 nV/√Hz) for 27V amplifiers over a bandwidth range of 100 to 200 MHz, enabling engineers to achieve more accurate measurements in data acquisition and signal processing applications. - The OPA189 is an ultra-low noise (5.2 nV/√Hz), highest bandwidth zero-drift op amp. With a low maximum drift of 0.02 μV/°C, the OPA189 also reduces temperature errors without calibration, improving system accuracy over an extended temperature range. Lower Power TI's new amplifiers consume 80 percent less power than competing devices, enabling low-power operation in high-speed designs: - The 120MHz OPA2810 op amp achieves an optimal current consumption of 3.6mA while delivering excellent signal-to-noise and distortion performance. - Designed for applications requiring high gain and low distortion in power-sensitive designs, the OPA189 is the lowest-power zero-drift op amp with 14MHz bandwidth. The device enables engineers to design noise-sensitive industrial systems with high resolution while consuming only 1.3mA of quiescent current, benefiting analog input modules, battery and LCD test equipment.