Achieve the industry’s best power-to-performance ratio with TI's new Differential Amplifiers

Typical applications for the THS4531A and THS4532 differential amplifiers include low-power data acquisition systems and high-density applications where power consumption and dissipation is critical, such as test and measurement equipment, and digital and ultrasonic water flow meters.

The THS4531A and THS4532 offer best in class performance with gain bandwidth of 36 MHz, power consumption of only 250 uA and low quiescent current of 0.25 mA per channel. The two new devices also feature noise of 10 nV/root Hz, maximum offset voltage of 0.4 mV, and slew rate of 200 volts per micro-second. Therefore, the new differential amplifiers provide unmatched power, distortion and noise performance.

The new devices offer improved precision sensing capabilities with an open-loop voltage gain of 114 dB with maximum offset of 0.4 mV. Offset voltage drift is just 9 micro-volts per degrees-Celsius, enabling precision sensing and buffering in applications where high-speed amplifiers have been limited in the past. Therefore, the THS4531A and THS4532 are able to drive data converters to achieve high-precision offset and drift performance.

TI's new differential amplifiers provide accurate output common-mode control and input common-mode range below the negative rail and rail-to-rail output. The THS4531A and THS4532 provide an easy interface to drive SAR and delta-sigma ADCs, such as the eight-channel, 24-bit delta-sigma ADS1278 or the single-channel, 16-bit SAR ADS8317, using only a single 2.5-V to 5-V power supply.

Texas Instruments offer tools and support to speed development with the THS4531A and THS4532. Designed to quickly and easily demonstrate the functionality and versatility of the amplifiers, TI introduce the THS4531AEVM and THS4532EVM evaluation modules. Easily configured for differential input, differential output, and single supply operation, the EVMs are ready to connect to power, signal source, and test instruments through on-board connectors. A SPICE model is also available for designing, testing, and troubleshooting a broad variety of basic and advanced circuits, including complex architectures, without any node or number of device limitations. Support is available on the High Speed Amplifier Forum in the TI E2E Community, where engineers can ask questions and get answers from TI experts.

Available now in 8-pin SOIC, 8-pin VSOP, and 10-pin QFN package options, the suggested retail price for the THS4531A is US$1.21 in 1,000-unit quantities. Available in a 16-pin TSSOP package, the uggested retail price for the THS4532 is US$1.85 in 1,000 unit quantities.